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Former Bayer Crop Science Agrochemical Works, Hauxton

Hauxton Post-Remediation Human Health Risk Assessment

Hauxton Post-Remediation Human Health Risk Assessment

Notice

This document and its contents have been prepared and are intended solely for Harrow Estate Plc’s information and use in relation to the validation of remediation works undertaken by Vertase FLI at the former Bayer Crop Science Agrochemical Works site, Hauxton, Cambridgeshire.

Atkins Limited assumes no responsibility to any other party in respect of or arising out of or in connection with this document and/or its contents.

Document history

Job number: 5095855 Document ref: Hauxton Post-Remediation Human Health Risk Assessment Revision Purpose description Originated Checked Reviewed Authorised Date Rev 1.0 Draft for comment HB, SW, AA HW, HB NE CL Sept 2012 Rev 2.0 Revised draft for HB, SW, AA, HW NE MS Sept 2012 comment TM Rev 3.0 Final HB, SW, AA, HW MS MS Dec 2012 TM Rev 4.0 Revised Final HB, SW, AA, HW MS MS Mar 2013 TM Rev 5.0 Revised Final following HB, SW, AA, HW MS MS Oct 2013 stakeholder comment TM, ZR

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Hauxton Post-Remediation Human Health Risk Assessment

Table of Contents

Chapter Pages 1. Introduction 1 1.1. Background 1 1.2. Aims and Objectives 1 1.3. Report Structure 2 1.4. Limitations and Assumptions 2 2. Selection of Soil Generic Assessment Criteria – Task 1 3 2.1. Conceptual Site Model (CSM) 3 2.2. Development of GAC 4 2.3. Updated CSM 5 2.4. Selection of GAC 6 3. Soil and Groundwater Data Assessment 8 3.1. Selection of Relevant Soil Analytical Data – Task 2 8 3.2. Generic Quantitative Risk Assessment – Task 3 9 4. Detailed Quantitative Risk Assessment – Task 4 13 4.1. Introduction 13 4.2. Updated Conceptual Site Model 13 4.3. Site Specific Assessment Criteria 15 4.4. Data Assessment 20 4.5. Combined Vapour Risk from Soil and Groundwater 23 5. Flux Box Monitoring 26 5.1. Introduction 26 5.2. Flux Box Methodology 26 5.3. Approach to Assessment 28 5.4. Soil to indoor air attenuation factor 30 5.5. Limitations 32 6. Evaluation - Task 5 33 6.1. Dichloromethylbenzene 33 6.2. Trichloromethylbenzene 34 6.3. 1,2-dichloroethane 36 7. Summary and Conclusions - Task 6 40 8. References 41 Appendix A. Relevant Vertase Drawings 43 Appendix B. Human Health Screening Values 44 B.1. Human Health Generic Assessment Criteria 45 Appendix C. Generic Human Health Risk Assessment 46 C.1. Side, Base and Trial pit Validation GQRA 47 C.2. Bentonite Wall Validation GQRA 48 C.3. Stockpile Validation Human Health GQRA 49 C.4. Treatment Bed Analysis Validation GQRA 50 C.5. Groundwater Human Health GQRA 51 Appendix D. DQRA Input Parameters 52 Appendix E. DQRA Modelling 53 Appendix F. Detailed Human Health Risk Assessment 54 F.1. Side, Base and Trial pit Validation Human Health DQRA 55 F.2. Bentonite Wall Validation Human Health DQRA 56 F.3. Treatment Bed Analysis Validation DQRA 57

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F.4. Groundwater DQRA Side, Base and Trial pit Validation Human Health DQRA 58 F.5. Statistics Calculator Output 59 Appendix G. Lines of Evidence 60 G.1. CLEA modelling – Further DQRA 61 G.2. Statistical Calculator Output – Further DQRA 62 G.3. Vertase February 2013 Vapour Report and Laboratory Results 63 G.4. Comparison of Vapour Results to UKRfC and Attenuation Factor 64 G.5. Groundwater Data in m bgl from Vertase 65 G.6. HPA Boundary Monitoring 66 G.7. Correspondence with the vapour laboratory 67

Figures Figure 1 1,2-dichloroethane SSAC Exceedances Plot Figure 2 Dichloromethylbenzene Exceedances Plot Figure 3 Trichloromethylbenzene Exceedances Plot Figure 4 1,2-dichloroethane Revised SSAC Exceedances Plot Figure 5 Flux Box Monitoring Locations

Tables Table 1. Comparison of previous and current SSVs for inhalation pathways only 7 Table 2. Exceedances of the GACs for the basal, side wall and trial pit validation samples 10 Table 3. Exceedances of the GACs for the bentonite wall validation samples 10 Table 4. Exceedances of the GACs for the treatment bed validation samples 11 Table 5. Exceedances of the WSV within groundwater data 12 Table 6. Summary of selected toxicological and physical chemical properties for similar compounds to dichloromethylbenzene and trichloromethylbenzene 16 Table 7. Kaw values for potential 1-(2-chloroethoxy)-2-(o-tolyloxy)-ethane surrogates 18 Table 8. Site Specific Assessment Criteria for soil 18 Table 9. Site Specific Assessment Criteria for water 19 Table 10. Exceedances of the SSACs for the basal, side wall and trial pit validation samples 20 Table 11. Exceedances of the SSACs for the bentonite wall validation samples 20 Table 12. Exceedances of the SSACs 21 Table 13. Statistical assessment for the main manufacturing area and southern production area 22 Table 14. Statistical assessment (BW) 23 Table 15. Maximum contaminant concentrations in groundwater in H7 and I18 23 Table 16. Maximum contaminant concentrations in soil in H7 and I18 24 Table 17. Hazard Quotients for Soil and Groundwater and Combined Hazard Quotients for H7 24 Table 18. Hazard Quotients for Soil and Groundwater and Combined Hazard Quotients for I18 24 Table 19. Summary of Flux Box Data Assessment 28 Table 20. Summary of Flux Box Data Assessment for Deep Soil 29 Table 21. Summary of Flux Box Data Assessment for Shallow Soils, 2011 data 30 Table 22. Summary of Flux Box Data Assessment for Shallow Soils, 2013 data 30 Table 23. Summary of Flux Box Data Assessment for Shallow Soils, revised UKRfC 31 Table 24. Comparison of Dichloromethylbenzene Soil Concentrations and Flux Box Results 33 Table 25. Comparison of Trichloromethylbenzene Soil Concentrations and Flux Box Results 35 Table 26. Updated statistical assessment 37 Table 27. Comparison of 1,2-dichloroethane SSAC, soil and deep flux box results 37 Table 28. Comparison of 1,2-dichloroethane in soil and shallow flux box results 38

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1. Introduction

1.1. Background Harrow Estates plc (Harrow Estates) is the developer undertaking the remediation of the former Bayer Crop Science Agrochemical Works in Hauxton, Cambridgeshire. It is intended that the site be redeveloped for residential housing, and the remediation works are being carried out under planning consent ref. S/2269/10 dated May 2011.

Vertase F.L.I. Limited (Vertase) is the remediation contractor that has been appointed by Harrow Estates to design and implement the remedial works, and for delivering remediation of the site to the standards they have agreed with the regulators under the planning consent.

Atkins Ltd (Atkins) has been appointed by Harrow Estates as its geo-environmental consultant. Atkins undertook elements of the preliminary ground investigation and risk assessment work prior to remediation of the site. Atkins was present on site during the remedial works to monitor the progression of the works and is now tasked with providing an independent validation of the remedial works, i.e. to confirm that the remediation has been carried out in accordance with the agreed methods and to the agreed standards.

Vertase has completed the remedial works and has produced a Contract Completion Report, May 2012 (Ref. 1) and recent groundwater monitoring results (Ref. 2) which provides the factual information relating to the remediation works and validation sampling undertaken to evidence the standard of remediation achieved at the Hauxton main site.

This report relates to remediation works carried out by Vertase on the main Hauxton site. The site boundary is shown on Figures 1 to 4 and lies to the south and west of the Riddy Brook and to the east of the A10. The site description is covered in the Atkins Verification Report.

1.2. Aims and Objectives The objective of the remedial works, from a human health perspective, is to ensure that estimated exposure to contaminants by the human health receptor will not exceed the relevant health criteria value (HCV) when redeveloped for residential housing.

This report is to present information to validate that this remedial objective has been achieved through a process of assessing the risks to human health associated with the redevelopment of the site post-remediation. If validation is not achieved, this report will provide recommendations for further risk assessment or risk management actions that may be required.

This report therefore presents the findings of a human health quantitative risk assessment carried out using the relevant soil analytical data representative of post-remediation ground conditions presented in the Vertase Contract Completion Report (Ref. 1) dated May 2012, recent groundwater monitoring data (Ref. 2) and vapour monitoring data (Appendix G.3).

The following tasks have been undertaken in preparing this report:

 Task 1: Development of Conceptual Site Model (CSM) and selection of Generic Assessment Criteria (GAC);  Task 2: Selection of relevant analytical data;  Task 3: Generic Quantitative Risk Assessment (GQRA);  Task 4: Detailed Quantitative Risk Assessment (DQRA);  Task 5: Evaluation; and  Task 6: Conclusions.

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1.3. Report Structure An outline of the report content is provided below:

1. Section 2 – sets out the CSM and selection of the human health GAC to be used in the risk assessment (Task 1); 2. Section 3 – discusses selection of validation analytical data and presents the results of the risk assessment (Tasks 2 and 3); 3. Sections 4 and 5 – present the findings of the detailed quantitative risk assessment undertaken (Task 4); 4. Section 6 – evaluates the findings of the risk assessment (Task 5); and 5. Section 7 – presents the conclusions of the risk assessments undertaken (Task 6).

1.4. Limitations and Assumptions The following limitations exist or following assumptions have been made, in the production of this report.

 The information used in this assessment is from Appendix F and G from the Vertase Contract Completion report (Ref. 1) and from further site observations made by Atkins during the works. This data represents the final validation data for the project presented by Vertase.  A Flux Box Monitoring Factual Report by Vertase, dated February 2013, has been provided for further clarity and is included in Appendix G.3 of this report together with the laboratory certificates and data from the March 2013 monitoring.  It has been assumed that suitable imported soil will be placed at surface at the site in a layer at least 1.0 m thick in line with the Remediation Method Statement (RMS) (Ref. 3).  Any soil imported to the site in the future will need to be assessed to ensure it is suitable for its intended use, meets requirements in this report and presents no unacceptable risk to human health.  The GACs from the Atkins 2006 and 2007 reports (Refs. 4, 5) which have been used in the GQRA within this report (discussed in Section 2) were derived using technical guidance that has since been superseded. The GAC have been used in this report for consistency as the published guidance was updated as the remediation works were on-going and regulator approval had been given for use of these GAC. However, the DQRA is based on current guidance. Further discussion on this is presented later in this report.

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2. Selection of Soil Generic Assessment Criteria – Task 1

2.1. Conceptual Site Model (CSM) A CSM was developed and reported by Atkins in 2006 and 2007 (Refs. 4, 5). A summary is provided in the sections below.

2.1.1. Source The potential sources considered in this assessment relate to the site’s former use and operations undertaken at the site. Specific contaminants considered to be present in soil at the site included within the Atkins CSM (Ref: 4) include:

 Pesticides and herbicides, e.g. 2-methyl-4-chlorophenoxyacetic acid (MCPA), 2,3,6- trichlorobenzoic acid (2,3,6-TBA), ethofumesate, dichlorodiphenyltrichloroethane (DDT), dicamba, trietazine;  Chlorinated hydrocarbons, e.g. trichloroethene, 1,1,1-trichloroethane etc, and associated degradation products and  Non-chlorinated hydrocarbons, e.g. total petroleum hydrocarbons (TPH), benzene, toluene, ethylbenzene, xylene (BTEX) compounds, polycyclic aromatic hydrocarbons (PAHs) and phenols etc.

The geology at the site is reported to have been disturbed considerably through the historical use of the site and the remediation processes. The ground typically comprises granular Made Ground, cohesive Made Ground, sands and gravels, marly chalk formation and Gault Clay (Ref. 4). The soil organic matter pre-remediation was in the range 0.3 to 10% (Ref. 4). Groundwater was present at a depth between 1-3 m below ground level (bgl) largely within Type B (West Melbury Marly Chalk Formation) material with shallower perched water contained in some former structures. Post-remediation conditions indicate that groundwater remains largely within the Type B material with a zone of effective negligible flow within the reinstated materials (Section 7.2, Ref. 6).

2.1.2. Receptor At the time of developing the CSM in 2006, the masterplan for the redevelopment of the site was evolving and the final end use of the site was not known and several options were evaluated (Ref. 4). The most sensitive of these was a residential with the consumption of vegetables land use. A residential land use is described within Defra and Environment Agency publication CLR10 (Ref. 7) (now withdrawn). The critical receptor for a residential land use laid out within this document is a female child, aged 0 to 6 years. This critical receptor was considered by Defra and the Environment Agency to be protective of older residents.

Risks to construction workers from acute, sub-acute or long-term exposure to potentially contaminated soil during construction can be mitigated by using appropriate health and safety procedures, as defined by a Control of Substances Hazardous to Health (COSHH) assessment. These receptors are therefore excluded from this assessment.

2.1.3. Pathways The most sensitive land use considered at the site is a residential land use. It was considered likely for future residents to wish to grow their own fruit and vegetables at the site and therefore the most relevant land use is residential with the consumption of produce. In line with CLR10 (Ref. 7) relevant pathways for a soil source are:

 ingestion of soil and soil-derived dust;  consumption of homegrown vegetables;  consumption of soil attached to homegrown vegetables;  dermal contact with soil outside;

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 dermal contact with soil-derived dust inside (tracked back);  inhalation of soil-derived dust outdoors;  inhalation of soil-derived dust indoors (tracked back);  inhalation of soil-derived vapours outside; and  inhalation of soil-derived vapours inside.

Two pathways not included in the CLR10 CSM are the:

 inhalation of groundwater-derived vapours outside; and  inhalation of groundwater-derived vapours inside.

These two pathways are also considered relevant for the site.

2.1.4. Changes to the Guidance Science Report (SR) 3 (Ref. 8) was published in 2008 and replaced CLR10 (Ref. 7) and CLEA Briefing Notes 1-4 (Refs. 9, 10, 11, 12). SR3 contained updated algorithms, updated input parameters (e.g. consumption rates, inhalation rates) and also two additional exposure pathways:

 consumption of homegrown produce (to include both fruit and vegetables); and  consumption of soil attached to homegrown produce (to include both fruit and vegetables).

GAC derived using the 2002-2008 Defra and Environment Agency guidance are different to those derived using the 2009 Environment Agency guidance. For instance, GAC derived under the 2009 guidance include exposure from the consumption of fruit pathways in conjunction with exposure estimated using the updated input parameter values and algorithms. An update was also published to the toxicological guidance by the Environment Agency in SR2. Additional information to those in CLR9 to derive toxicological health criteria values was included.

SR3 (Ref. 8) did not include the additional pathways at the site; the inhalation of vapours from groundwater.

2.2. Development of GAC GAC for soils were developed and reported by Atkins in 2006 and 2007 (Refs. 4, 5). These documents were submitted to the regulators as part of the planning process in 2008. The Vertase Contract Completion report (Ref. 1) confirms that they were approved by the relevant regulators as part of the planning approval in February 2010. The GACs were included in the Vertase RMS dated April 2009 (Ref. 6) which formed Planning Condition 2. The GAC presented in the 2006 and 2007 Atkins reports (Refs. 4, 5) are based on guidance which was superseded in 2008-9, but which had already been approved for use by the Regulator.

Assessment criteria for the inhalation of vapours from groundwater were not derived in the Atkins 2006 and 2007 reports (Refs. 4, 5), which only considered the vapour risk from soils. In order to assess the potential risk from these pathways, Atkins has developed generic Water Screening Values (WSV) based on the CSM outlined within SR3 (Ref. 8). The WSV are based on a standard residential land use, a sand soil with 1% SOM and a shallow, conservative depth to groundwater of 1.0 m. They consider inhalation of vapour pathways only.

2.2.1. Selection of Soil GAC, Key CSM and Key Conceptual Exposure Model Points The 2006 and 2007 Atkins GAC (Refs. 4, 5) were selected in three stages. The key CSM and conceptual exposure model (CEM) points for the GAC are also discussed in turn below:

 Defra and the Environment Agency published Soil Guideline Values (SGVs) for ten substances (arsenic, cadmium, chromium, lead, mercury (inorganic), nickel, selenium, toluene, ethylbenzene and phenol). These were based on a source depth beneath a building of 1.0 m, a source depth at surface outwith the building footprint, a sandy soil and a 1% SOM. These SGVs included consideration of all pathways (but did not include the consumption of fruit).

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 For the ten SGV substances, the SGV (2002-2005) was used as the GAC.

 Atkins developed Soil Screening Values (SSVs) for a variety of contaminants commonly found on brownfield sites (excluding SGV substances) for a residential with the consumption of vegetables land use, which followed the methodology in CLR10 (Ref. 7) and the CLEA Briefing Notes (Refs. 9, 10, 11, 12). The SSVs were based on a source depth beneath a building of 1.0 m, a source depth at surface outwith the building footprint, a sandy soil and a SOM of 1.72%. The SSVs were based on the risk driving pathways rather than integrating exposure across all pathways. This resulted in the SSVs for volatile organic compounds (VOCs) generally being based on the inhalation of vapours indoors.

 Where available, in the absence of SGVs, SSVs were selected as the GAC.

 Given the site’s former use as a Crop Science Agrochemical works, a number of compounds were reported in soil from the ground investigations undertaken, for which there was no SSV. Atkins completed an assessment of these compounds and developed relevant GAC, or recommended use of a GAC for another substance as an initial conservative measure (termed a surrogate GAC) (Ref. 5). These GAC were based on a source depth beneath a building of 1.0 m, a sandy soil and a SOM of 1.72%. The GAC included consideration of all pathways (excluding the consumption of fruit).

 The recommended GAC (or surrogate GAC) was used to assess the concentrations of additional compounds reported in soil.

Planning conditions 4 and 9 were set by the Regulator regarding ‘contaminants not previously identified’ (CNPI). Planning condition 4 states that:

“…As part of the characterisation stage of the treatment train a single representative sample from each grid square of the development…shall be analysed by an agreed method of gas chromatography/mass spectrometry scans for the purpose of identifying any contaminants not previously identified during site investigations. Any such contaminants identified shall be dealt with in accordance with Condition 9”.

Furthermore, planning condition 9 states:

“In the event that contamination is found…that was not previously identified…an investigation and risk assessment must be undertaken…A written report of the findings must be produced…subject to approval by the Local Planning Authority…must include a survey of the extent, scale and nature of contamination…an assessment of the potential risks…and appraisal of remedial options”.

To address these two conditions, Atkins was commissioned to develop GAC for CNPI. GAC for the CNPI were developed (Refs. 13-22) using the 2009 Environment Agency Contaminated Land Exposure Assessment (CLEA) guidance as best practice. The GAC were submitted to District Council and were approved for use (Ref. 23 ).

The CNPI GAC were based on depth below the building foundation of 0.5 m, a source depth at surface outwith the building footprint, a sand soil and a SOM of 1% to represent the CSM outlined in SR3 but taking into account the site specific soil type (Ref. 8). Through using the CLEA software, all exposure pathways were integrated together. However, a separate assessment criterion was calculated for oral and dermal exposure and a separate assessment criterion for inhalation exposure.

2.3. Updated CSM The CSM has now been updated following completion of the remediation works. The soil source has been better characterised during these works and it is known where material has been placed upon the site. Soil within the validation report has been described as Type A (granular) and Type B and C (marl and clay). The GAC used in this risk assessment are based on a sand

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soil which is protective of the granular material and the more cohesive soil. The SOM post- remediation is higher than that pre-remediation due to the bioremediation methodology selected and a 1% and 1.72% SOM is considered conservative.

As part of the redevelopment planning conditions, a minimum thickness of 1.0 m of suitable soil will be placed at surface at the site during development for residential use. The final layer currently present on site is crushed concrete which acts as a visible hard dig barrier above treated materials. The depth to any residual contamination therefore will be at least 1.0 m and consequently, the presence of this cover layer will mean that the soil ingestion, dermal contact, consumption of produce and inhalation of dust pathways are not relevant. As such, the only relevant pathways are:

 inhalation of soil-derived vapours outside;  inhalation of soil-derived vapours inside;  inhalation of groundwater-derived vapours outside; and  inhalation of groundwater-derived vapours inside.

The groundwater at the site is reported to be present from depths of 0.67 m bgl, based on current conditions. Upon placement of 1.0 m of suitable soil, groundwater will be at depths greater than 1.0 m bgl. Former structures upon the site have been removed and thus perched water is not considered to be present. Pre- and post-remediation groundwater conditions are discussed in more detail in the Vertase Validation Completion Report (Ref. 6) and Groundwater Validation Report (Ref. 2). Available groundwater data provided by Vertase and converted to units of m bgl have been included in Appendix G.5 of this report.

A number of contaminants are not considered to volatilise readily from soil solution and therefore the inhalation of vapours pathway is not relevant. These contaminants have therefore been excluded from the assessment in this report. Those contaminants which are not considered to volatilise readily from soil solution are discussed in the Atkins 2007 report (Ref. 5) These include dicamba, dimefox, schradan, MCPA, DDT, hempa, dichlorprop, mecoprop, ethofumesate, simazine, 2-methyl-4,6-dinitrophenol, 4-chloro-2-methylphenol, bis(2-chloroethyl)ether, cyclohexanone, trichlorobenzeneamine, aldrin, dieldrin, PAHs (excluding naphthalene) and metals. Given the changes in the CLEA guidance in SR3 (Ref. 8), where appropriate toxicology data was available, CNPI were considered to have the potential to volatilise from soil solution.

2.4. Selection of GAC The soil GAC, as discussed above, were agreed for use by the Regulator after the revised CLEA guidance was published (Ref. 6) and have been selected for use in this assessment. The use of these GAC allows consistency over the course of the project from remediation design and planning regulatory agreement to remediation validation.

Atkins does not consider that revising the GAC under the new guidance would have made a significant difference to the compounds identified and assessed further in the detailed quantitative risk assessment presented in this report. GAC are designed to be used at an initial screening level and are not necessarily suitable for use as remediation targets as they are likely to include an overly high level of conservatism. It should also be noted that the changes that have been made to the CLEA framework do not mean that sites assessed previously, under the old guidance, now require additional remediation measures.

Table 1 provides a comparison between the GAC used and 2011 SSVs for 1% and 6% SOM. While SSVs based on 1% SOM have been used initially within this DQRA, based on the soil properties at the site, 6% SOM values could justifiably be used. The comparison between the GAC and 2011 SSVs for 6% SOM show that the SSV is higher in all instances illustrating that the use of 2011 SSVs at the GQRA stage would not identify additional contaminants of concern.

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Table 1. Comparison of previous and current SSVs for inhalation pathways only

inhal inhal inhal

- -

from

mg/kg

2006 SSV 2006 SSV 2006 SSV 2006

(1% (1% SOM) (6% SOM)

versus 2011 versus 2011 versus

Appendix B, B, Appendix

SSV (1% SOM) SSV (1% SOM) SSV (6% 2011 SSV 2011 Compound SSV 2011 Naphthalene 4.4 0.60 Decrease 9.3 Increase Benzene 0.01 0.09 Increase

Toluene 3 222 Increase

Ethylbenzene 9 60 Increase

o-Xylenes 2.5 21.1 Increase

m-xylene 2.5 19.7 Increase

p-xylene 2.5 18.9 Increase

Trichloroethene 0.1 0.039 Decrease 0.51 Increase Vinyl Chloride 0.0005 0.0002 Decrease 0.001 Increase

Tetrachloroethene 0.76 0.476 Decrease 6.9 Increase

1,2- 0.003 0.00204 Decrease 0.016 Increase dichloroethane Chlorobenzene 1.5 3.7 Decrease 54 Increase

The CSM has been significantly revised in this report at DQRA level and it is considered that changes between CLR10 and SR3 and CLR9 and SR2 will not impact on the overall outcome of the assessment for this site. An internal comparison by Atkins of GAC under the old and new guidance, summarised for key contaminants in Table 1, identified that using the updated guidance would not result in significantly lower GAC that would impact the overall outcome for this site. It is acknowledged that toxicological information is continually changing as more studies are published over time. Toxicological data for the key contaminants of concern have been re- considered to ensure that more recent data is not inappropriately disregarded. Based on an evaluation of the available data to date and the key legislation under which this site is being assessed, Atkins considers that the assessment criteria are appropriate for use at this stage. The GAC used are presented in Appendix B.

The exception to the use of the original GAC was where CNPI GAC were derived. There is reduced flexibility in removing the inhalation of dust pathway from the inhalation GAC as the inhalation pathways are integrated together in the modelling. The GAC selected was therefore based on the inhalation of vapours and inhalation of dust pathways only.

Atkins has selected WSV (including those for specific pesticides where available) to assess the inhalation of vapours from groundwater pathways. Surrogate compounds used to assess soil contaminants have also been applied to the groundwater where WSVs were not available. In the case of trichlorophenol, there was no WSV or suitable surrogate WSV. The CIRIA guidance (Ref. 24) reports that where the air to water partition coefficient is lower than 1x10-4, the compound is unlikely to volatilise from the groundwater body. With an air water partition coefficient of 8.82x10-7 (Ref. 25), a WSV is not relevant.

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3. Soil and Groundwater Data Assessment

3.1. Selection of Relevant Soil Analytical Data – Task 2 The soil validation sampling analytical data presented in Appendix F and G of the Vertase Contract Completion Report (Ref. 1) have been divided into four groups:

 Side, base and trial pit validation samples  Bentonite wall validation samples  Stockpile validation samples  Treatment bed validation samples

A brief discussion of the relevant data is presented below. Further information is presented in the Vertase Contract Completion Report (Ref. 1).

3.1.1. Side, Base and Trial Pit Validation Samples

Trial Pits The trial pit validation samples were taken in areas of in-situ material which was not identified as requiring remediation. A minimum of one trial pit per grid square was excavated and as a minimum one sample was taken from each stratum encountered (Ref. 1).

Side and Base Sampling A potentially uncontaminated base was established during the remediation works by Vertase through assessment of visual and olfactory indicators and use of a Photo Ionisation Detector (PID). Soil validation samples were then taken by Vertase from the base and side of excavations once a potentially uncontaminated base was established (Ref. 1). The sampling protocol was:

 “a minimum of one basal sample per grid square;  where more than one base existed within a grid square (i.e. excavation terraces) one sample was taken per base;  where excavation side /faces existed within a grid square, 1 sample taken per face; and  where a potential source or pathway / hotspot was excavated from the base of a mass excavation, additional side and basal validation samples were taken as required.” (Ref. 1)

Where validation samples failed the validation test, further excavation was undertaken by Vertase and the above process repeated. These initial validation samples were excluded from the data set considered in this risk assessment.

Data Selection The data from the side validation (SV), base validation (BV) and Trial Pit (TP) validation worksheet located in Appendix F of the Vertase Contract Completion Report (Ref. 1) has been used for this human health risk assessment. Only the most recent and deepest validation tests have been assessed as they represent the final validation samples. Earlier sampling will be representative of shallower depths where the soil was excavated and therefore will not reflect the final excavation depth and validated base. Some characterisation samples (CS) were present in the SV, BV and TP validation worksheet. The majority of these samples have been removed as there were deeper samples but if no other sample was present for the location, this sample has been retained.

3.1.2. Bentonite Wall Validation Samples The bentonite wall in the eastern area of the site was subject to specific planning conditions and therefore additional validation samples were taken by Vertase (Ref. 1). An extra basal sample

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was taken from each grid square in which the bentonite wall was excavated. Side validation samples were also taken from the site boundary excavations from each grid square.

Where validation samples failed the validation test, further excavation was undertaken by Vertase until the groundwater was reached, the trial pit collapsed, the maximum reach of the excavator was reached or a clean Gault Clay was identified. The initial validation samples were excluded from the data set considered in this report.

Data Selection The data from the bentonite wall investigation and validation worksheet located in Appendix F of the Vertase Contract Completion Report (Ref. 1) has been used for this risk assessment. Only the deepest / most recent samples have been assessed. A total of 33 bentonite wall validation soil samples were considered appropriate for use.

3.1.3. Stockpile Validation Samples Areas that did not require remediation (southern site bund) and other excavated materials that did not require remediation or had completed remediation were shaped into stockpiles prior to re-use. Samples were taken of this material to ensure it was suitable for re-use.

Data Selection The analytical data in the stockpile validation results located in Appendix G of the Vertase Completion report (Ref. 1) has been used in this risk assessment.

3.1.4. Ex-situ Biological Treatment Bed Validation Samples All soils excavated requiring treatment were constructed into treatment beds (windrows) for biological treatment. Beds were mechanically turned in order to further homogenise materials by breaking down larger clasts, increase the surface area of material to aeration and ensure the regular aeration of the materials (Ref. 1).

The first sample taken from a windrow was designated as a t0 sample, and was taken within 24 hours of the original excavation of the treatment bed. Subsequent t samples were taken from each individual treatment windrow in the following days until the concentrations “achieved appropriate validation criteria” (Ref. 1). Each treatment bed was reinstated in a certain zone and a certain layer according to the criteria it had passed, specified in the Vertase Post-Remediation Quantitative Risk Assessment for Controlled Waters (Ref. 26), and the material type. The spreadsheets for each treatment bed showing failures and subsequent validation following processing are located in Appendix G of the Vertase report (Ref. 1).

Data Selection The final t value from the treatment bed worksheet has been selected for use in this risk assessment.

3.1.5. Groundwater Monitoring Data Recent groundwater monitoring data was presented in the Remediation Validation Completion Report (Ref. 6). It was considered appropriate to use data obtained between January and June 2012 (a 6 month period) to compare against the WSV as this data allows for ground conditions to have stabilised following the remediation.

3.2. Generic Quantitative Risk Assessment – Task 3 The relevant soil validation samples and groundwater samples have been compared to the WSV/GAC selected in Task 1. The results are presented in the sections below relating to the type of validation sample.

3.2.1. Side, Base and Trial Pit Validation Samples Results Exceedances of GAC from side, base and trial pit excavations are presented in Table 2. The full assessment is located in Appendix C.1.

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Table 2. Exceedances of the GACs for the basal, side wall and trial pit validation

samples

Source of

Determinand assessment

Units

value value

No. of No. of No. of

criteria criteria

Second Second

samples

Minimum Minimum

Maximum Maximum

Mean Mean conc.

Assessment Assessment

exceedances highest value highest

Surrogate 2006 1,2-Dichlorobenzene µg/kg 395 5 5100 1300 28 1 1500 Atkins SSV (chlorobenzene) 1,2-Dichloroethane µg/kg 395 5 37000 17000 228 46 (395) 3 Atkins 2006 SSV Surrogate 2006 Cis-1,2-Dichloroethene µg/kg 395 5 1700 1500 30 68 (395) 0.5 Atkins SSV (vinyl chloride) Tetrachloroethene µg/kg 392 5 91000 34000 709 32 760 Atkins 2006 SSV Toluene µg/kg 395 1 8880 3200 76 2 3000 2005 SGV Trichloroethene µg/kg 395 5 3700 1900 56 31 100 Atkins 2006 SSV Vinyl chloride monomer µg/kg 395 5 62 50 8 14 (395) 0.5 Atkins 2006 SSV 1-(2-Chloroethoxy)-2-(o- µg/kg 3 160 400 260 273 3 5 Practicable LOD Tolyloxy)-ethane Trichloromethylbenzene µg/kg 13 120 120000 19000 13045 13 5 Practicable LOD Surrogate 2009 1-Methylnaphthalene µg/kg 1 280 280 - 280 1 92.8 SSV (benzene) Surrogate 2006 Dichlorotoluene/ µg/kg 5 550 26000 1070 5844 5 0.5 Atkins SSV (vinyl Dichloromethylbenzene chloride) Surrogate 2006 Trichlorobenzene µg/kg 1 13000 13000 - 13000 1 1500 Atkins SSV, (chlorobenzene) Notes. The number inside the brackets is the number of samples which exceeded the GAC including those samples where the Limit of Detection (LOD) exceeded the GAC. The number outside brackets is the number of samples that exceeded the GAC excluding samples at the LOD.

The limit of detection (LOD) available to Vertase for 1,2-dichloroethane, cis-1,2-dichloroethene and vinyl chloride were above the GAC. The LOD for these determinands ranged from <5 µg/kg to <250 µg/kg. The GAC for vinyl chloride was 0.5 µg/kg and this was also used as a surrogate SSV for cis-1,2-dichloroethene. The maximum recorded actual concentration of vinyl chloride was 62 µg/kg. Since detectable concentrations of all three contaminants were identified above the assessment criteria these compounds will be considered further within the DQRA in Section 0.

For contaminants assessed under the CNPI planning conditions, there are a minimal number of exceedances. This could indicate that they are present in localised areas of the site and are not representative of a continuous source. This is discussed further in Section 4.

The majority of the GAC exceedances were located in cells G, H, I and J, 6 to 15.

3.2.2. Bentonite Wall Validation Samples Results Exceedances of GAC are presented in Table 3. The full assessment is located in Appendix C.2.

Table 3. Exceedances of the GACs for the bentonite wall validation samples

Source of

Determinand Units assessment

value value No. of No. of

criteria criteria

Second Second

samples

Minimum Minimum

Maximum Maximum

Number of Number

Mean Mean conc.

Assessment Assessment

exceedances highest value highest

Atkins 2006 1,2-Dichloroethane µg/kg 33 5 1200 520 75 8 (33) 3 SSV

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Source of

Determinand Units assessment

value value No. of No. of

criteria criteria

Second Second

samples

Minimum Minimum

Maximum Maximum

Number of Number

Mean Mean conc.

Assessment Assessment

exceedances highest value highest

Surrogate Atkins 2006 Cis-1,2-Dichloroethene µg/kg 33 5 300 250 38 12 (33) 0.5 SSV (Vinyl Chloride) Toluene µg/kg 33 1 170000 410 5216 1 3000 2005 SGV Atkins 2006 Vinyl chloride monomer µg/kg 33 5 250 50 19 0 (33) 0.5 SSV Atkins 2006 Xylene (Total) µg/kg 33 1 25000 110 774 1 2500 SSV Practicable 1-(2-Chloroethoxy)-2-(o- 300 µg/kg 1 3000 3000 - 1 5 Limit of Tolyloxy)-ethane 0 detection 126 Atkins 2006 Tetrachloroethene µg/kg 33 5.00 16000 7600 7 760 0 SSV Atkins 2006 Trichloroethene µg/kg 33 5.00 3400 2200 308 12 100 SSV Notes: The number inside the brackets is the number of samples which exceeded the GAC including those samples where the Limit of Detection (LOD) exceeded the GAC. The number outside brackets is the number of samples that exceeded the GAC excluding samples at the LOD.

The LOD for 1,2-dichloroethane, cis-1,2-dichloroethene and vinyl chloride were above the GAC. The LOD were <5 µg/kg and <250 µg/kg. A small number of samples contained the majority of the exceedances and tended to be grouped between cells G7–G10, H6-H7, I6, J6 and K5.

3.2.3. Stockpile Validation Sample Results There were no exceedances of the GACs for the stockpile validation sample results, with the exception of 1,2-dichloroethane, cis-1,2-dichloroethene and vinyl chloride. The exceedances for these compounds were due to the LOD being greater than the GAC. The full assessment is located in Appendix C.3.

3.2.4. Ex-situ Biological Treatment Bed Validation Sample Results Exceedances of GAC are presented in Table 4. The full assessment is located in Appendix C.4.

Table 4. Exceedances of the GACs for the treatment bed validation samples

.

conc Source of Determinand Units

assessment criteria

value

criteria

samples

Number of Number of Number

Mean

Assessment Assessment

exceedances

Minimum value Minimum

Maximum value Maximum highest Second Surrogate Atkins 2,4,6- µg/kg 185 0 82000 13000 1092 1 16000 2007 SSV Trichlorophenol (Pentachlorophenol) Surrogate Atkins 1,2- µg/kg 185 0 1900 1900 82 3 1500 2006 SSV Dichlorobenzene (chlorobenzene) 1,2- 21 µg/kg 185 0 360 250 8 3 Atkins 2006 SSV Dichloroethane (185) Surrogate Atkins Cis-1,2- 31 µg/kg 185 0 930 490 11 0.5 2006 SSV (Vinyl Dichloroethene (185) Chloride) Vinyl chloride 2 µg/kg 185 0 25 17 0 0.5 Atkins 2006 SSV monomer (185) Tetrachloroethene µg/kg 185 0 11000 11000 550 31 760 Atkins 2006 SSV Trichloroethene µg/kg 185 0 8100 1000 75 13 100 Atkins 2006 SSV Notes: The number inside the brackets is the number of samples which exceeded the GAC including those samples where the Limit of Detection (LOD) exceeded the GAC. The number outside brackets is the number of samples that exceeded the GAC excluding samples at the LOD.

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As with the other validation samples, the GAC for vinyl chloride and cis-1,2-dichloroethene were below the LOD.

3.2.5. Summary of Soil Data Assessment A number of samples were reported to exceed the relevant GAC in the SV, BV, TP sampling, the bentonite wall sampling and the treatment bed sampling. Exceedances of GAC were not noted in soil within stockpiles. For some contaminants, less than 5 exceedances of the GAC were noted across the site indicating that the source zone was not widespread. In other instances e.g. trichloroethene and tetrachloroethene, significantly more GAC exceedances were noted in the central area of the site as opposed to the southern area of the site. Some GAC exceedances reflected the LOD; the LOD was in some cases selected as a more practicable limit as opposed to a health based limit due to a paucity of reliable data or for pragmatic reasons.

3.2.6. Groundwater Monitoring Data Exceedances of GAC are presented in Table 4. The full assessment is located in Appendix C.5.

Table 5. Exceedances of the WSV within groundwater data

Source of

Determinand Units assessment

value value No. of No. of

criteria criteria

samples

Minimum Minimum

Maximum Maximum

Number of Number

Mean Mean conc.

Assessment Assessment exceedances

Tetrachloroethene µg/l 65 <1 16000 601 4 1660 Atkins 2011 WSV Trichloroethene µg/l 65 <1 900 44 4 222 Atkins 2011 WSV Cis-1,2-dichloroethene µg/l 65 <1 610 31 1 548 Atkins 2011 WSV 1,2-dichloroethane µg/l 65 <1 290 13 3 37.3 Atkins 2011 WSV Vinyl chloride µg/l 65 <1 50 3.85 9 2.48 Atkins 2011 WSV Notes: A WSV has been developed for cis-1,2-dichloroethene using contaminant specific toxicological data. This is different to the approach for soils, where use of a surrogate GAC was approved by the regulator as insufficient data was available to derive a contaminant specific GAC in 2006 and 2007 (Refs. 4, 5).

Based on the six months of data assessed in this validation report, WSV exceedances were noted in each of the rounds in location H7, which is located in the north east of the site, within 10 m of the Riddy Brook. The shallowest depth to groundwater in this location recorded between January 2012 and June 2012 was 1.06 m bgl; the average depth was 1.27 m bgl. The information which was provided by Vertase is included in Appendix G.5. Exceedances of the vinyl chloride WSV were also reported in I18 located in the centre of the site between February and June 2012 (no exceedances were reported in January from I18). The shallowest depth to groundwater in I18 recorded between January 2012 and June 2012 in I18 was 0.19 m bgl (noted to correspond to temporary surface ponding); the average depth was 0.67 m bgl. Pre- and post-remediation groundwater conditions are discussed in more detail in the Vertase Validation Completion Report (Ref.6) and Groundwater Validation Report (Ref. 2). It should be noted that the maximum concentrations recorded in groundwater are not co-located with the maximum concentrations in soil and thus are considered to represent separate sources and depths do not take into account the 1 m thickness of suitable imported soil that will be placed at the site to form the final finished levels.

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4. Detailed Quantitative Risk Assessment – Task 4

4.1. Introduction The GQRA identified a number of contaminants which exceeded GAC:

 1,2-Dichlorobenzene  1,2-Dichloroethane  Cis-1,2-Dichloroethene  Tetrachloroethene  Toluene  Trichloroethene  Vinyl chloride  1-(2-Chloroethoxy)-2-(o-tolyloxy)-ethane  Trichloromethylbenzene  1-Methylnaphthalene  Dichlorotoluene/ Dichloromethylbenzene  Trichlorobenzene  Xylene  2,4,6-Trichlorophenol

In order to assess the potential risks from these contaminants, a DQRA has been completed. The DQRA takes into account site specific soil data and therefore provides a more accurate assessment of potential risks at the site. The DQRA therefore further refines the CSM developed in Section 2 and derives Site Specific Assessment Criteria (SSAC) for the contaminants of concern identified in the GQRA. The DQRA has been completed using the 2009 Environment Agency guidance (Refs. 8, 25, 29).

A statistical assessment has then been completed for contaminants of concern which exceed the SSAC. In considering the averaging areas, the assessment includes reference to the conceptual site model and potential historical sources in order to identify potential source areas and to distinguish these from isolated hotspots.

4.2. Updated Conceptual Site Model Source

Further consideration has been given to site data which reflect final site conditions. Available borehole logs and analytical data from the controlled waters DQRA (Ref. 26) have been used to develop site specific soil parameters. Validation borehole logs are also included in the Vertase Completion Report (Ref. 1). The key area of concern identified at the site from the Vertase Completion Report is Zone 2 (Ref. 1) in the central part of the site.

Available site data indicates that soils returned to excavations from treatment beds (which were amended with mushroom compost) have an elevated SOM level, in some samples over 100%1 SOM (Ref. 2 and Ref. 26, Appendix F). However, this soil is not considered to be representative of soil which was not excavated and remains in situ (i.e. below the base of the excavation). The average SOM of pre-remediation soils at the site was 2.52% and values in soils between 0 m bgl and 3.5 m bgl ranged from <0.1% to 10%. The SGV published by the Environment Agency in 2009 are based on an average SOM for a sandy loam soil of 6%. Soils with a higher clay content (as present on the site) tend to have a greater component of organic material than soils which are

1 Values greater than 100% were recorded within the SOM data. This is due to conversion of fraction of organic carbon values (dimensionless) into SOM (weight %). The conversion calculation is given in equation 4.2 in SR3 (Ref. 7) and can lead to values over 100%.

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primarily sandy or gravelly and therefore might be expected to have a higher SOM than 6%. Taking into account data from pre-remediation works (Ref. 4) and as non-excavated soils are expected to have a lower SOM than those from treatment beds, a SOM of 6% reflects both the a higher SOM within treated soils but also the lower SOM within untreated soils. This SOM level was considered to provide a sufficient level of conservatism and was selected for use in the DQRA.

The three different soil types were reviewed to establish what soil type was most appropriate to model. Type A soil is predominantly granular sand and gravels and semi cohesive Made Ground, Type B material includes West Melbury Marly Chalk Formation (WMMCF) and cohesive Made Ground while Type C is cohesive Gault Clay. The soils become increasingly less permeable as they become more cohesive from Type A to Type C.

The main production area at the site is located at the northern end of the site and was identified as the location of most exceedances and therefore the most relevant for the DQRA (Zone 2). In this part of the site, excavations were largely between 4.5 m bgl and 6.0 m bgl as shown on Vertase Drawing D907_207 in the Contract Completion Report (Ref. 1). The reinstatement of materials in this part of the site consists of thicknesses of re-instated Type C up to 3.0 m beneath approximately 3.0 m of reinstated Type B material as shown on Vertase Drawing D907_236 in the Validation Completion Report (Ref. 6).

Because Type B material made up the majority of re-placed soil at the site (an average of 2 m thickness across the site) (Ref. 1) and is intermediate between Type A and Type C in terms of permeability, this was considered to be an appropriate soil type to consider in the modelling in the first instance. The main constituent of the Type B material is WMMCF. The log descriptions of this material were reviewed and it was considered that the description was most akin to the SR3 (Ref. 8) soil type of a sandy clay loam, which was therefore selected. Site specific data presented in the controlled waters DQRA (Ref. 26) was assessed and relevant properties such as residual soil water content2, hydraulic conductivity and bulk density were selected.

The Type B material was placed into the excavation in layers and each layer was compacted before the next was placed. Due to the nature of compaction upon replacing soil at the site, the lateral hydraulic conductivity has been used as the vertical hydraulic conductivity, as a conservative measure3. 111 in-situ permeability tests were undertaken by Vertase in Type B materials across the whole site at various depths. Those from Zone 2 have been used to calculate a representative permeability value. The saturated hydraulic conductivity has been used to calculate an effective air permeability using equations in SR3 (Ref. 8) which was then compared to the default for a sandy clay loam. The range of saturated hydraulic conductivity values for the Type B material in Zone 2 ranged from 2.3x10-10 to 6.7 x 10-6 m/s with a typical value of 2.2 x 10-7 m/s. The variability of permeability values obtained from on site testing can be seen in the large range of values. Further information is presented in the Validation Completion Report (Ref. 6) including histograms of available permeability data in Appendix F. The value of 2.2 x 10-7 m/s is also presented as a median of Type B permeability data in Section 6.5.4 of the Post Remediation QRA Report (Ref. 26).

Due to the deterministic nature of the CLEA methodology, a single point value is required to represent the averaging area under consideration, in this case Zone 2. Due to the number of in- situ tests and the compaction of the Type B materials in layers, it is considered appropriate to use the median value for the assessment in the first instance. While the effective air permeability value used is smaller than that derived based on default values for a sandy clay loam, it is considered appropriate as it is based on site specific data.

The input parameters used to derive SSAC are presented in Appendix D.

2 The residual soil water content determined from site specific data was slightly larger (0.18 cm3/cm3) than the default value for a sandy clay loam (0.15 cm3/cm3) but the value used is within the range of default values given in SR3 (0.07 to 0.26 cm3/cm3).

3 commonly vertical hydraulic conductivity is assumed to be 10% that of lateral hydraulic conductivity

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The depth to the contaminant source has been assumed at 1.0 m bgl in the first instance as a conservative measure. The majority of exceedances are reported to occur at depths greater than this, at the base of excavations (the majority of which range from 2.0 m bgl to 6.5 m bgl). However, treatment bed soil may contain concentrations of contaminants of concern which will be placed above the base. Exceedances of the SSAC will be evaluated in the risk evaluation, with consideration of depth.

The depth to groundwater has been assumed to be 1.67 m bgl, based on the verification data obtained. This is based on the shallowest recorded depth of groundwater at the site (0.67 m bgl, see Section 3.2.6) (discounting temporary surface ponding). The value of 1.67 m bgl represents the depth below the final levels at the site. A 1.0 m thick layer of imported suitable soil will be placed across the site to bring the ground surface up to the final finish level. As discussed in the Vertase groundwater validation report (Ref. 2), in Section 7.3.2, based on the low permeability of the Type B material across the site, upwards migration of contaminants into the Type A material was not considered as a pathway. Upwards migration of contaminants in this way is considered unlikely to occur given the soil properties and that Vertase describes a zone of effective negligible flow within the reinstated materials (Ref. 6). The key contaminants of concern (chlorinated compounds) are also considered to be dense non-aqueous phase liquids in pure form and thus more likely to sink than rise.

Receptor

The assumptions with regard to the site use (residential with consumption of homegrown produce) and associated critical receptor (a 0 to 6 year old female child) within the CSM developed in Section 2.1.2 have been retained.

Pathways

The pathways relevant for a residential with consumption of homegrown produce scenario are presented in Section 2.1.3. Based on the development proposals and as outlined in the Vertase Contract Completion Report (Ref. 1) a 1.0 m layer of imported suitable soil will be placed on top of existing site soils to provide a final finish level. Therefore direct contact through the hard dig layer or from upward migration, ingestion and dust inhalation pathways are not considered to be relevant for soils and have been excluded from the CEM. Consequently, only vapour inhalation pathways have been considered further within the DQRA, as with the GQRA.

In the first instance, only an indoor inhalation pathway has been considered for modelling waters due to the differences in algorithms between SR3 (Ref. 8) and what is contained within the software used for assessing waters (RBCA). Risks to human health will be greater from vapours within enclosed spaces than in outdoor air due to the greater potential for dilution and air movement outdoors and increased potential for accumulation of vapour concentrations within an indoor environment. Typically, an assessment criterion derived for the inhalation of outdoor vapours will be at least a factor of 10 to 100 higher than an assessment criterion for indoor inhalation. Concentrations in water will be assessed taking this into account. A safety factor of 50% will be applied to the groundwater SSAC for indoor air to account for outdoor exposure as a first measure and the maximum concentrations reported will be checked to ensure that there are no marginal exceedances.

The default building type in SR3 (Ref. 8) of a small 2 storey terraced house has been retained in the assessment. The exact locations of houses are currently under consideration and it is known that the building types on-site will vary from two to three storey house types. The default SR3 building type is therefore considered appropriate for use in the assessment.

4.3. Site Specific Assessment Criteria Modelling has been undertaken for soils using CLEA v1.06 and for waters using RBCA for those contaminants identified as exceeding GAC. The modelling was based on current human health guidance published by the Environment Agency in 2009 (Ref. 8); RBCA was adapted to be UK compliant. Relevant input parameters are presented in Appendix D.

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Physical chemical and toxicological data used in the 2011 Atkins ATRISKsoil SSVs and WSVs have been used in the SSAC to ensure that the DQRA is based on current guidance. There is no SSV for pentachlorophenol. The inhalation HCV used in the 2007 DQRA (Ref.5) has therefore been used, together with physical chemical data presented in SR7 (Ref. 25). A review of toxicological data did not identify more recent HCVs which would be more appropriate to use.

The SSAC for soil are presented in Table 7 and the SSAC for water are presented in Table 8. Modelling outputs are presented as Appendix E.

The available toxicological and physical chemical data for dichloromethylbenzene and trichloromethylbenzene have been re-visited. There is insufficient data with which to derive a contaminant specific SSAC for either compound. However, some toxicological data was located (as part of the CNPI process using the list of source in SR2 (Ref. 29) which provided evidence that the use of the vinyl chloride SSAC as a surrogate would be overly conservative. Part of this exercise therefore involved assessing whether alternative surrogate compound SSAC would be more appropriate for use.

Available data were evaluated from a number of sources including SR7 (Ref. 25), EPIWIN, Environment Agency TOX Reports and the United States Environmental Protection Agency (USEPA) online toxicology database for similar compounds. A summary of the relevant physical properties of the contaminants is show in Table 5 below.

Table 6. Summary of selected toxicological and physical chemical properties for similar compounds to dichloromethylbenzene and trichloromethylbenzene Log octanol-water Air to Water partition coefficient Inhalation Structure Partition and Determinand ID µg/kg Source (TOXNET) Coefficient/Kaw Log organic bw/day (dimensionless) carbon-water partition coefficient

Dichloromethylbenzene -2 1.2x10 (EPIWIN) - - - (alpha alpha form)

Trichloromethylbenzene 3.2 x 10-3 (SR7) - - - (alpha alpha alpha form)

0.3 Unit risk TOX 18 Vinyl chloride 7.47x10-1 (SR7) 1.22 (SR7) factor in region of USEPA 4.4x10-

6µg/m3

1.48 (SR7) 1,2-dichloroethane 2.38x10-2 (SR7) 0.12 TOX 22 1.30 (SR7)

Unit risk 2.3 (SR7) factor in Chloromethylbenzene 7.47x10-3 (SR7) region of USEPA 1.96 (SR7) 4.9x10- 5µg/m3

2.13 (SR7) 2009 TOX Benzene 0.116 (SR7) 1.4 1.83 (SR7) report

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Log octanol-water Air to Water partition coefficient Inhalation Structure Partition and Determinand ID µg/kg Source (TOXNET) Coefficient/Kaw Log organic bw/day (dimensionless) carbon-water partition coefficient

2.73 (SR7) 2009 TOX Toluene 0,115 (SR7) 1400 (TDI) 2.31 (SR7) report

There are several forms of trichloromethylbenzene and dichloromethylbenzene. In the first instance, it has been assumed that the form present in soil is the more toxic alpha form. It should be noted that the alpha forms are not likely to persist in the environment as they are reported to rapidly hydrolyse in the presence of water (Ref. 32) and thus the forms present are likely to be comparatively less toxic. Based on the chemical structure, toluene, benzene, 1,2-dichloroethane and vinyl chloride are considered to be the most suitable surrogate compounds for evaluation of dichlorotoluene. Although the structure of this compound has greater similarity to the structure of benzene and toluene, there is potential for comparatively increased toxicity due to the presence of halide substituents (such as chlorine) to the basic benzene or toluene structure. Therefore, since chlorine is present in both 1,2-dichloroethane and vinyl chloride, they have been considered for adoption as a surrogate.

The inhalation toxicity data for vinyl chloride is more conservative than that of either benzene or toluene whilst the toxicological data for 1,2-dichloroethane is more conservative again. Both vinyl chloride and 1,2-dichloroethane are considered to be more appropriate for the evaluation of the potential toxicity of dichlorotoluene as they provide a suitable means of assessing the presence of additional chlorine substituents, which could result in toxic properties that exceed that of benzene or toluene and are both non threshold compounds. The HCV for 1,2-dichloroethane has been selected as an appropriate surrogate compound as it has a lower HCV than vinyl chloride

There is physical and chemical data for some forms of dichlorotoluene, which suggests that it is less mobile in the environment than 1,2-dichloroethane. 1,2-dichloroethane has been selected as a surrogate compound for dichloromethylbenzene to assess soil data due to the paucity of available robust inhalation specific toxicological data. This will be re-reviewed as part of the DQRA evaluation in Section 6.

A similar approach has been adopted for trichloromethylbenzene. Based on the chemical structure, toluene, benzene, 1,2-dichloroethane and vinyl chloride are considered to be the most suitable surrogate compounds. Although the structure of trichloromethylbenzene has greater similarity to the structure of benzene and toluene, there is potential for comparatively increased toxicity due to the presence of halide substituents (such as chlorine) to the basic benzene or toluene structure. Therefore, since chlorine is present in both 1,2-dichloroethane and vinyl chloride, they have been considered for adoption as a surrogate.

The inhalation toxicity data for vinyl chloride is more conservative than that of either benzene or toluene whilst the toxicological data for 1,2-dichloroethane is more conservative again. Both vinyl chloride and 1,2-dichloroethane are considered to be more appropriate for the evaluation of the potential toxicity of trichloromethylbenzene as they provide a suitable means of assessing the presence of additional chlorine substituents, which could result in toxic properties that exceed that of benzene or toluene and are both non threshold compounds. The HCV for 1,2-dichloroethane has been selected as an appropriate surrogate compound for trichloromethylbenzene as it has a lower HCV than vinyl chloride.

There is physical and chemical data which suggests that trichloromethylbenzene is less mobile in the environment than 1,2-dichloroethane. 1,2-dichloroethane has been selected as a surrogate compound for trichloromethylbenzene to assess soil data due to the paucity of available robust inhalation specific toxicological data.

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The use of the LOD as the SSAC for 1-(2-chloroethoxy)-2-(o-tolyloxy)-ethane has also been revisited. The chemical structure was evaluated to assess whether a SSAC for another compound would be appropriate for use given the paucity in toxicological data. More appropriate compounds were considered to include dichlorocresol, 2,6-bis(1,1-dimethyl)-4-(1-methylpropyl)- phenol and methyl tert-butyl ether.

The key physical chemical parameter for the inhalation of vapour pathways is the air to water partition coefficient. This was calculated using the EPIWIN software to be 2.16x10-4. This value was compared to the air to water partition coefficient for the potential surrogate compounds identified above.

Table 7. Kaw values for potential 1-(2-chloroethoxy)-2-(o-tolyloxy)-ethane surrogates

Air to Water SSV Partition (6% Determinand Structure (TOXNET) Source Coefficient/Kaw sandy (dimensionless) loam)

1-(2-chloroethoxy)-2-(o-tolyloxy)-ethane 2.16x10-4 EPIWIN NA

Dichlorocresol 2.09x10-5 HenryWin 1770

2,6-bis(1,1-dimethyl)-4-(1-methylpropyl)- -5 4.17x10 EPIWIN 73.9 phenol

-2 EIC/ Methyl tert-butyl ether 1.6 x 10 220 CL:AIRE

The lowest of the available Atkins SSVs (GAC) for the above compounds, based on 6% SOM and sandy loam soil has been adopted as the SSAC. The lowest value was for (2,6-bis(1,1-dimethyl)- 4-(1-methylpropyl)-phenol). The selected assessment criterion has been presented in Table 8.

Table 8. Site Specific Assessment Criteria for soil

Determinand SSAC (mg/kg)

Chlorobenzene 3,675 1,2-dichloroethane 1.11 Vinyl chloride 0.0815 Cis-1,2-dichloroethene 28.9 Tetrachloroethene 447 Toluene >saturation

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Determinand SSAC (mg/kg)

Trichloroethene 35.4 Benzene 75.9 345,027 (surrogate used is 2,4,6-trichlorophenol pentachlorophenol) 53.5 (surrogate used is 2,6- 1-(2-chloroethoxy)-2-(o- bis(1,1-dimethyl)-4-(1- tolyloxy)-ethane methylpropyl)-phenol) Xylene 18,913 1.11 (surrogate used is 1,2- Trichloromethylbenzene dichloroethane) 1.11 (surrogate used is 1,2- Dichloromethylbenzene dichloroethane) 3,675 (surrogate used is 1,2-dichlorobenzene chlorobenzene) 1-methylnaphthalene 75.9 (surrogate used is benzene)

1.11 (surrogate used is 1,2- Dichlorotoluene dichloroethane) 3,675 (surrogate used is Trichlorobenzene chlorobenzene) >saturation The lower of the vapour or aqueous soil saturation limit has been exceeded before the hazard quotient reached unity. No risk based assessment criterion is therefore relevant as there is no free phase product upon the site. Given the information presented in the Contract Completion Report and Validation Completion Report (Refs. 2 and 5), it is considered unlikely that significant concentrations of toluene could migrate upwards into remediated soil.

Contaminants exceeding their respective GAC in the GQRA have been compared to SSAC. The findings from this are discussed in Section 4.4. Concentrations of contaminants within treatment beds did not exceed the SSAC and therefore treatment bed data have not been considered further.

Table 9. Site Specific Assessment Criteria for water

SSAC (mg/L) (50% of value Determinand calculated by RBCA) 1,2-dichloroethane 0.75 Vinyl chloride 0.06 Cis-1,2-dichloroethene 11.5 Tetrachloroethene 29.5 Trichloroethene 4.25

Concentrations within groundwater did not exceed the SSAC. The full assessment is located in Appendix F.

The potential risks via vapour inhalation from a combined soil and groundwater source will be considered by deriving Hazard Quotients for the soil and groundwater sources for locations H7 and I18 in the DQRA. The findings from this are discussed in Section 4.5.

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4.4. Data Assessment

4.4.1. Side, Base and Trial Pit Validation Samples

Trial Pits Exceedances of SSAC are presented in Table 10 and will be considered further in Section 4.4.4. The full assessment is located in Appendix F.1.

Table 10. Exceedances of the SSACs for the basal, side wall and trial pit validation

samples

Source of

Determinand assessment

Units

value value

conc.

No. of No. of No. of

criteria criteria

Average Average

samples

Minimum Minimum

Maximum Maximum

Assessment Assessment exceedances

1,2-Dichloroethane µg/kg 395 5 37,000 228 9 1110 SSAC

Surrogate 1,2- Trichloromethylbenzene µg/kg 13 120 120,000 13,045 7 1110 Dichloroethane

Surrogate 1,2- Dichloromethylbenzene µg/kg 5 550 26,000 5,844 1 1110 Dichloroethane

Figures 1 to 3 illustrate the grid cells where SSAC exceedances were reported, together with the number of samples which exceed the SSAC in each grid cell over the number of samples analysed within that grid cell.

4.4.2. Bentonite Wall Validation Samples Results Exceedances of SSAC are presented in Table 11. The full assessment is located in Appendix F.2.

Table 11. Exceedances of the SSACs for the bentonite wall validation samples

Source of

Determinand Units assessment

value value No. of No. of

criteria criteria

Second Second

samples

Minimum Minimum

Maximum Maximum

Number of Number

Assessment Assessment

exceedances

highest value highest Average conc. Average

1,2-Dichloroethane µg/kg 33 5 1200 520 75 1 1110 SSAC Vinyl chloride monomer µg/kg 33 5 250 50 19 0 (1) 81.5 SSAC Notes: The number inside the brackets is the number of samples which exceeded the GAC including those samples where the Limit of Detection (LOD) exceeded the GAC. The number outside brackets is the number of samples that exceeded the GAC excluding samples at the LOD.

The exceedance of the vinyl chloride SSAC is related to a limit of detection exceeding the SSAC. This issue affected one sample in a total of 33 samples, with the limit of detection for all other samples lying below the SSAC. No concentrations above the limit of detection were reported.

One exceedance was noted for 1,2-dichloroethane. This was in cell I6 at a depth of 6 m.

Given the fact that no other samples exceeded the SSAC in the other validation samples and there is no record of visual and olfactory indications of contamination, no further assessment is considered necessary with the exception of 1,2-dichloroethane.

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4.4.3. Treatment Bed Validation Samples Concentrations of contaminants exceeding GAC did not exceed the SSAC. The full data assessment is presented in Appendix F.3. A summary of the results of the treatment bed validation is provided in the Vertase Contract Completion Report (Ref. 1).

4.4.4. Summary of Samples Exceeding the SSAC The samples where concentrations of 1,2-dichloroethane exceeded the SSAC are presented in Table 12 and will be considered further. These are illustrated in Figure 1. Concentrations of dichloromethylbenzene and trichloromethylbenzene exceeding the SSAC are presented in Figures 2 and 3 respectively.

Table 12. Exceedances of the SSACs

-

BV Reference Row Column Depth

1,2

µg/kg

enzene

benzene

Dichloroethane

Trichloromethyl Dichloromethylb

I6 I 6 6 1200 - - H8 WALL H 8 5 1700 - - H10 Trial H 10 4 2100 - - I9 BV I 9 6 17000 - 2400 I10 Trial I 10 6 5500 - - I9 I 9 6 37000 - - I9 trial sample in gault I 9 6 11000 - - J10 BV J 10 6.5 1300 - - J9 BV J 9 6 2400 - - L10 SV W L 10 6.5 1500 - - E19 BV E 19 5.0 - - 11110 F19 4.4M F 19 4.4 - 26000 120000 I11 SVS I 11 6.5 (77) - 3000 I11 SVE I 11 6.5 - - 4500 I11 BV I 11 6.5 (87) - 19000 J10 SV J 10 6.5 - - 6800 Notes Values in brackets do not exceed the SSAC and are reported for completeness

4.4.5. Statistical Assessment

Introduction Soil concentrations will inevitably vary across a site. Higher concentrations may be representative of underlying natural variation, or may be the result of an area of localised contamination which represents a different population with a higher mean (statistical outliers). The CIEH/CL:AIRE statistics guidance (Ref. 27) states that outliers should only be excluded from a dataset if their presence can be demonstrated to be the result of an error or where their presence clearly indicates that more than one soil population exists and this can be justified by or used to inform the CSM. If evidence to justify the exclusion of any outliers is not available then they should be assumed to be part of the same population as the rest of the dataset and retained. This method for treating outliers has been used in analysing the data in this report.

The upper 95th percentile of the mean measured concentration is known as the Upper Confidence Limit (UCL) 95. The UCL95 allows a measure of confidence to be incorporated into the calculation of the mean value, and the determined value can then be compared to the

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assessment criterion. The statistical calculator derives the UCL95 for the dataset being assessed.

The source of contamination of the site is considered to be soil which has not been treated. Therefore, the side, base and trial pit validation data was considered to represent the first population of soil of interest. The second population of interest is the Bentonite Wall data, where one concentration out of 33 exceeded the SSAC for 1,2-dichloroethane.

The locations of validation samples which exceeded the SSAC for each of the three contaminants are shown on Figures 1 to 3. Exceeding concentrations of 1,2-dichloroethane were located by the bentonite wall. Concentrations of 1,2-dichloroethane, dichloromethylbenzene and trichloromethylbenzene were found to be clustered around the former main manufacturing plant. It is considered likely that in this area contamination reached greater depths than other parts of the site. In addition, concentrations of dichloromethylbenzene and trichloromethylbenzene in the south of the site were found to be clustered around another former production area. The footprint and area immediately around it has been considered as a second source zone. The soil is considered to be natural soil which has been contaminated by historical processes and therefore in line with the guidance, no outliers are considered to be present within each source area.

Based on the identified residual source areas of these concentrations, statistical analysis of the concentrations within and immediately surrounding the source areas has been undertaken. The averaging areas assessed comprised the following cells

 Bentonite wall area  Former main manufacturing plant: G8-G11, H8-H11, I8-I11 to J8-J11, K9-10 and L9-10.  Former southern production area: C18-C20, D18-D20, E18-E20 and F18-F20.

The concentrations of 1,2-dichloroethane, dichloromethylbenzene and trichloromethylbenzene in the identified source areas were assessed using the statistical calculator which accompanied the CIEH/CL:AIRE statistics guidance (Ref. 27). The results are summarised in Table 13 and the calculator outputs are included in Appendix F.5.

Table 13. Statistical assessment for the main manufacturing area and southern production area

Contaminant No. of Distribution Sample Upper Cc Does the true Evidence samples Arithmetic Confidence (SSAC) mean exceed Level Mean Limit the Cc? µg/kg

Dichloromethylbenzene 2 Cannot be 800 1236 1110 Yes; although 90% – north calculated could be equal

Dichloromethylbenzene 3 Normal 3740 12307 1110 Yes N/A – mean – south exceeds Cc

Trichloromethylbenzene 8 Non-normal 4608.75 14235 1110 Yes N/A – mean - north exceeds Cc

Trichloromethylbenzene 4 Non-normal 33043 159856 1110 Yes N/A – mean – south exceeds Cc

1,2-dichloroethane 55 Non-normal 1557.4 4852 1110 Yes N/A – mean exceeds Cc

Notes: Evidence level – The calculated level of evidence against the null hypothesis (that the true mean is below the Cc).

As can be seen from the statistical assessment, the mean concentrations of 1,2-dichloroethane, dichloromethylbenzene (north and south) and trichloromethylbenzene (north and south) exceed the SSAC. These contaminants will be assessed further as Task 5.

A statistical assessment was also completed for the Bentonite Wall (BW) population. The results are summarised in Table 14. The calculator outputs are included in Appendix F.5.

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Table 14. Statistical assessment (BW)

Contaminant No. of Distribution Sample Upper Cc Does the true Evidence samples Arithmetic Confidence (SSAC) mean exceed Level Mean Limit µg/kg the Cc?

1,2-dichloroethane 33 Non-normal 68 237 1110 No 100%

Notes: Evidence level – The calculated level of evidence against the null hypothesis (that the true mean is below the Cc).

No further assessment is considered necessary for the Bentonite Wall data.

4.5. Combined Vapour Risk from Soil and Groundwater

4.5.1. Introduction As described in Section 4.3, contaminant concentrations within groundwater which were found to exceed the GAC were compared to SSAC. This identified no exceedances of the site specific values. Based on post-remediation conditions and based on the information available to date, contaminants in groundwater are considered to represent a separate source to those in soil.

However, as a conservative measure, consideration has also been given to the potential for exposure to vapours from both soils and groundwater. The combined vapour risk from these two sources has been calculated by entering the concentrations of the relevant contaminants in groundwater into RBCA and in soil into CLEA. The resulting hazard quotients can then be added together to determine whether estimated average daily exposure exceeds the HCV (this would be shown by a combined number greater than 1).

This approach is considered to be highly conservative because maximum soil and groundwater locations were not co-located. Including over-conservatism in the assessment is not appropriate and does not follow the ethos of CLR11 (Ref. 27). However, a comparison of the maximum soil and groundwater concentrations available is included below, along with derived combined hazard quotients. It is not considered appropriate to use soil concentrations exceeding the SSAC at the base of the Gault clay in such an assessment as the groundwater body is not related to this area of the site and soil concentrations would be significantly below the groundwater body.

4.5.2. Groundwater Maximum groundwater concentrations for the contaminants of concern are summarised for H7 and I18 below. These two boreholes were selected as they contained concentrations of contaminants exceeding the conservative WSVs.

Table 15. Maximum contaminant concentrations in groundwater in H7 and I18

Contaminant Maximum Concentration Maximum Concentration in H7 (mg/L) in I18 (mg/L)

Vinyl Chloride 0.05 0.007

Cis-1,2-dichloroethene 0.61 0.025

1,2-dichloroethane 0.29 <0.001

Trichloroethene 0.90 0.002

Tetrachloroethene 16.0 0.01

These concentrations were entered into RBCA in two separate modelling runs using the shallowest groundwater depths recorded in each borehole with the 1 m imported soil (H7 - 2.28 m

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bgl and I18 - 1.68 m bgl). All other parameters previously used in the derivation of groundwater SSAC were retained since the boreholes H7 and I18 are both installed in Type B material. The model outputs are included in Appendix E.

4.5.3. Soils Maximum soil concentrations identified as part of the validation datasets within grid cells H7 and I18 were used, along with the shallowest soil depth at which concentrations were recorded.

Table 16. Maximum contaminant concentrations in soil in H7 and I18

Contaminant Maximum Concentration Maximum Concentration in in H7 (mg/kg) I18 (mg/kg)

Vinyl Chloride <0.025 <0.005

Cis-1,2-dichloroethene 0.095 <0.005

1,2-dichloroethane 0.370 <0.005

Trichloroethene 0.210 <0.005

Tetrachloroethene 3.0 <0.005

These soil concentrations were entered into Step 3 within the CLEA v1.06 software in two separate runs. The shallowest soil sample depths were used for H7. All other parameters previously used in the derivation of soil SSAC were retained. The model outputs are included in Appendix E.

4.5.4. Combined Hazard Quotients

Table 17. Hazard Quotients for Soil and Groundwater and Combined Hazard Quotients for H7

Contaminant Soil Hazard Groundwater Combined Combined HQ Quotient Hazard Hazard >1? Quotient Quotient

Vinyl Chloride 0.11 0.43 0.54 No

Cis-1,2-dichloroethene 0 0.027 0.027 No

1,2-dichloroethane 0.1 0.19 0.29 No

Trichloroethene 0 0.11 0.11 No

Tetrachloroethene 0 0.28 0.28 No

Table 18. Hazard Quotients for Soil and Groundwater and Combined Hazard Quotients for I18

Contaminant Soil Hazard Groundwater Combined Combined HQ Quotient Hazard Hazard >1? Quotient Quotient

Vinyl Chloride 0.02 0.061 0.081 No

Cis-1,2-dichloroethene 0 0.0011 0.0011 No

1,2-dichloroethane 0 0.00068 0.00068 No

Trichloroethene 0 0.00024 0.00024 No

Tetrachloroethene 0 0.00018 0.00018 No

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4.5.5. Results As shown in Table 17 and 18, none of the combined hazard quotients for either H7 or I18 exceeded 1 and therefore the estimated average daily exposure for all five contaminants is not considered to exceed the HCV.

Although no allowance has been given to the inhalation of vapour in outdoor air in the hazard quotient modelling, this is not considered to be significant. If the inhalation of vapours outdoors were to present 50% of the hazard quotient of indoor vapour inhalation (i.e. 0.22), the sum of all three hazard quotients would not exceed 1.

Since the HCV is not being exceeded by estimated exposure for an individual or combined soil and groundwater source in the location of groundwater exceedances, potential vapour risks from groundwater will not be considered further. It is noted that use of specific permeability data for these locations is not considered necessary given the orders of magnitude safety and as the approach to modelling uses representative values across the Type B material.

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5. Flux Box Monitoring

5.1. Introduction Flux box testing was undertaken by Vertase during the remediation to provide an additional line of evidence regarding the actual volatilisation of residual VOCs in the soil. A report entitled ‘Flux Box Monitoring Factual Report’ by Vertase, dated February 2013, has been provided for further clarity and is included in Appendix G.3 of this report along with flux box data and the sampling methodology provided by Vertase. The sampling was completed over shallow soils at the completed levels post remediation and at deep soil locations within excavations during the remediation works. Therefore the results and assessments have been assessed to reflect the differing sampling depths. Additional flux box testing, at shallow depth, was completed at six locations agreed with Atkins on the site in March 2013, which have been included within this assessment and the laboratory certificates included in Appendix G.3. Volatile contaminants were measured through use of a photo-ionisation detector (PID) which measures total VOC in the vapour and through use of Tenax tubes which were sent to the laboratory for a specified analytical suite. The PID results have not been evaluated in this report as they contain concentrations of all VOC and it is not possible to distinguish which contaminants are actually present. As such, they cannot be assessed quantitatively.

5.2. Flux Box Methodology The Flux Box Monitoring was undertaken in line with the Vertase FLI standard operating procedure included within the Flux Box Monitoring Factual Report (Appendix G.3). Atkins understands that the methodology was developed by Vertase with experience in vapour assessment. The location selected for the flux box test was flat and cleared of debris and the box weighed down with sand bags to ensure the box was in contact with surface soils and would not short circuit with ambient air.

Where the PID was used, it was calibrated prior to use and the ambient concentrations measured at 0.05, 0.1, 0.3, 0.6 and 1.2 m above ground level. The PID was connected to the flux box and a one hour test completed. The concentration of total VOCs was recorded every minute over a 30 minute period and the frequency reduced to every 5 minutes for a further 30 minutes. The test was stopped if there was no change of VOC concentration of 5 ppm. This information was used to assess whether tenax tube monitoring was required and the length of time tenax tube monitoring should be undertaken for.

The tenax tubes were connected to the pump which was run for an allotted timeframe, suggested by the testing laboratory and considered suitable by Vertase. The timeframe took into account the area of the site, advice from their experienced staff and the testing laboratory, PID readings, knowledge of the soil concentrations and ensured the tenax tube did not become saturated. The laboratory recommended the following procedures were considered when assessing the length of time that the tenax tubes were connected:

 High Concentrations (i.e. you can smell it) 5 minutes  Suspected High 5 to 10 minutes  Unknown 50 minutes  Low 60 to 100 minutes  Expected clean air 100 minutes

It is important to use a relevant flow rate for the contaminants of concern. If air is pumped too quickly, contaminants do not have sufficient time to adsorb inside the tenax tube before the air is pushed out the tube. A pump flow rate can be calculated using the test times reported on the proforma for each monitoring location and the volume of air sampled presented in the laboratory sheets; the 2013 flow rates for example were 50 ml/minute. Vertase has confirmed that the pumping rates were set by the analytical laboratory and were not adjusted on site. It is therefore considered likely that the rates were uniform across the site.

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It is the volume of air that was sampled which is important. It is important during air monitoring that a suitable volume of air is passed through the tenax tube. Too small a volume of air can result in an unreliable reading whereas too large a volume can result in breakthrough occurring (where contamination is ‘washed out’ of the tube during sampling) or saturation of the available binding sites. The appropriate volume of air required for sampling was based on the PID readings which were used to estimate the potential concentration of vapours trapped within the flux box. The air volumes for the 2011 data therefore vary from 1.38 L to 37.33 L volumes. For the 2013 data the volumes of air were increased to 72 L due to the lower concentrations of contaminants considered likely to volatilise from remediated soils by Vertase. The Vertase report (see Appendix G.3) clearly states that care was taken to ensure that saturation did not occur.

5.2.1. Shallow and Deep Flux Box Monitoring Three sets of flux box monitoring were undertaken:

 as soil was being excavated at the site at depths below ground level of 3.5 m to 5.5 m bgl. Monitoring was undertaken between the 16th May and 12th September 2011;  at the reinstated surface between 10th June and 11th November 2011. Similar coverage of the deeper areas was targeted along with an area towards the south of the site; and  at the surface in March 2013. This round was designed to confirm the concentrations of vapours arising to the surface. Locations monitored were targeted based on results from the DQRA.

It should be noted that the flux box sampling has been taken at the current surface of the site. Suitable soil of at least 1 m thickness is yet to be imported to the site. This will mean that results at the current surface level will be reflective of concentrations at a depth of 1m bgl once this imported soil is placed.

As detailed in the Flux Box Monitoring Factual Report (Appendix G.3), the locations of the flux box samples were based on observations during the site works and the base validation data. The first area of focus was the base of the excavation before excavated soils were reinstated to assess residual concentrations within the lower deposits (i.e. deep samples). This was in the area of the former manufacturing plant towards the north of the site where the most significant contamination was found. This testing was generally undertaken between depths of 3 to 5 m as material was restored in layers, typically towards 5.5 m or at the base of excavation. Grid cells targeted included H8, H10, I9, I10, J9 and J10 where 1,2-dichloroethane soil SSAC exceedances have been identified. 24 samples were taken.

Once the soil was reinstated at the surface, flux box sampling was undertaken at 32 locations at shallow depths of approximately 0.25 m bgl in 2011.

Six locations were agreed in advance with Atkins and were selected and sampled based on soil exceedances identified in the DQRA in the area of the main manufacturing plant in 2013. The 2013 sampling locations were targeted at:

 E19/F19 to target for the highest concentrations reported for dichloromethylbenzene and trichloromethylbenzene in soil;  I9 to target the highest concentrations of 1,2-dichloroethane in soil and concentrations of trichloromethylbenzene;  H/I 10/I11, L10, H8 to target high concentrations of 1,2-dichloroethane in soil and vapour; and  H15 to account for variation across the site.

A sample location plan can be found as Figure 5.

Overall the flux box testing was carried out under a range of meteorological and atmospheric conditions through both falling and rising pressure. The barometric pressure at the time of testing during 2011 testing ranged from 982 mb to 1027 mb, the temperature ranged from 8°C to 26°C and weather conditions ranged from warm and sunny to wet and windy.

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During the 2013 round of vapour sampling the barometric pressure readings ranged from 999 mb to 1005 mb with temperature ranging from 0°C to 8°C. During the 2013 round of flux box monitoring, the atmospheric pressure was noted to fall during the 24 hour monitoring period therefore providing ideal conditions. However, it is acknowledged that not all samples were collected in what would be assumed to be worst case conditions. The inherent uncertainty in meteorological patterns, period of variation and length of time the sample should be completed over, means that it is not always practical to wait for worst case falling pressure cycles with the additional complication of time pressure commercial projects. It is also noted that the DQRA is based upon estimates of average concentrations which would accumulate in a building over a period of time which a receptor could reasonably be expected to be exposed to. Taking this into account, having data over a range of conditions is considered reasonable for this assessment.

To affectively assess the data it was split into three groups: deep data; shallow 2011 data; and shallow 2013 data. The results of the vapour testing have been assessed against in turn in this report.

5.3. Approach to Assessment The laboratory tenax tube data have been compared to relevant screening values (presented in Appendix G.4). The value determined as being a suitable air target concentration is termed by Atkins a UK Reference Concentration (UKRfC). This is a reference concentration in air, based on the principles of toxicological assessment as outlined in SR2 (Ref. 29) (where available for the contaminants analysed), below which there would be no unacceptable health risks to the receptor. The UKRfCs used in this assessment equate to the HCVs used in the SSVs. The UKRfC is effectively the inhalation index dose or inhalation Tolerable Daily Soil Intake (TDSI) in units of µg/m3 (the TDSI is the portion of the inhalation Tolerable Daily Intake (TDI) that remains once background inhalation exposure has been accounted for).

UKRfCs based on a child receptor have been used since this is considered to be representative of both the on- and off-site receptor. However, such an assessment assumes that the receptors are exposed to the soil vapours ‘at source’, without any allowance for migration and attenuation prior to exposure. The soil vapour measurements taken are at a depth of at least 1 m below FFL (in many cases, at least 5 m below FFL). There is therefore an inherent level of conservatism in this initial assessment.

All of the contaminants identified on the tenax tube have been assessed against appropriate criteria where available and reviewed as to the potential risk that they pose to human health.

5.3.1. Flux Box Results - GQRA Table 19 provides a summary of the number of VOCs identified and those above their respective or surrogate inhalation UKRfC.

Table 19. Summary of Flux Box Data Assessment Flux Box Location Number of Samples Number of VOC Number of Samples (Year Completed) concentrations where concentrations identified > Method detected, that exceed Detection Limit (across the UKRfC all tubes)

Deep Soils >1.0m bgl 24 216 124 (2011) Shallow Soils 1.0 m below final finish levels 34 181 31 (bFFL) (2011) Shallow Soils 1.0 m bFFL 6 60 2 (2013)

The 2013 flux box monitoring was undertaken at six locations, a reduction in number to those monitored in 2011. The six locations were identified taking into account the results available to

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date and were selected to account for the locations where DQRA soil exceedances were noted for 1,2-dichloroethane, dichloromethylbenzene and trichloromethylbenzene. Six samples were considered appropriate by Vertase, and their locations agreed with Atkins prior to commencement. On the basis that the samples were targeted to agreed specific locations (i.e. where highest vapour concentrations should be expected), in the absence of a site development plan, this is considered by Atkins as an appropriate approach.

As UKRfC have been exceeded, additional assessment is required. A summary of the exceedances can be found in Tables 20, 21 and 22, with the full assessment (including choice of surrogate used) presented in Appendix G.4.

Table 20. Summary of Flux Box Data Assessment for Deep Soil

No. of Min Max Mean No. of UKRfC Determinand Units detects Value Value Conc. exceedances (µg/m³)

1-chloro-2-methyl-benzene µg/m³ 4 263 3020 1320 3 483 1,4-dichloro-2-methyl-benzene µg/m³ 3 100 368 209 3 0.42 m/p-xylene µg/m³ 4 109 596 251 1 184 1,3,5-trichlorobenzene µg/m³ 3 22.31 92 65 2 48.3 1,3,5-trichloro-4-methylbenzene µg/m³ 1 92 92 92 1 0.42 1,3-dichloro-5-methylbenzene µg/m³ 4 36 2329 643 4 0.42 Naphthalene µg/m³ 3 20.93 1083 625 3 2.48 1,2,4-trimethylbenzene µg/m³ 3 18.6 171 75 3 3.5 3,3,5-trimethyl-cyclohexanone µg/m³ 2 88 116 102 1 99.8 1-ethyl-3-methylbenzene µg/m³ 2 37 127 82 1 99.8 1,3,5-trimethylbenzene µg/m³ 3 30.85 78 47 3 3.5 2-methylnaphthalene µg/m³ 2 1262 1784 1523 2 2.48 1-methylnaphthalene µg/m³ 2 1412 1724 1568 2 2.48 2,7-dimethylnaphthalene µg/m³ 2 1047 1188 1118 2 2.48 1,6-dimethylnaphthalene µg/m³ 2 921 1048 985 2 2.48 2,6-dimethylnaphthalene µg/m³ 2 504 584 544 2 2.48 1,4-dimethylnaphthalene µg/m³ 2 460 504 482 2 2.48 2,3-dimethylnaphthalene µg/m³ 2 455 495 475 2 2.48 2-methylbenzo[b]thiophene µg/m³ 2 358 433 396 2 133 biphenyl µg/m³ 2 370 405 388 2 133 5-methylnbenzo[b]thiophene µg/m³ 2 275 325 300 2 133 1-ethylnaphthalene µg/m³ 2 292 318 305 2 2.48 4,7-dimethyl-1H-indene µg/m³ 2 287 303 295 2 2.48 2-benzothiophene µg/m³ 1 283 283 283 1 133 3,5-dimethylbenzo[b]thiophene µg/m³ 2 222 237 230 2 133 1,2,4-trichlorobenzene µg/m³ 2 45 333 189 1 48.3 1,3-dichloro-2- µg/m³ 2 35 257 146 2 0.42 chloromethylbenzene 1,2-dichloro-3-methylbenzene µg/m³ 2 24.95 207 116 2 0.42 2,4-dichloro-1- µg/m³ 2 20.28 107 64 2 0.42 chloromethylbenzene 1,6,7-trimethylnaphthalene µg/m³ 1 221 221 221 1 2.48 1,2,4-trichloro-3-methylbenzene µg/m³ 2 96 523 310 2 0.42 cis-1,2-dichloroethene µg/m³ 18 0.33 443.03 98 6 19.9 trichlorethene µg/m³ 19 0.82 7153 890 14 18.2 tetrachloroethene µg/m³ 24 8.26 101335 8051 19 211 1,2-dichloroethane µg/m³ 19 2.4 2204 519 13 0.42 vinyl chloride µg/m³ 18 16.25 249.55 112 7 1.05 benzene µg/m³ 2 67.73 212.75 140 2 4.9 1,2,3-trichloro-4-methylbenzene µg/m³ 1 79 79 79 1 48.3

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As highlighted in grey in Table 20, for the deep samples, the majority of the UKRfC exceedances were for cis-1,2-dichloroethene, trichloroethene, tetrachloroethene, 1,2-dichloroethane and vinyl chloride. Concentrations of trichloromethylbenzene and dichloromethylbenzene were also identified above the method detection limit.

Highest concentrations for these contaminants were in locations I11 (trichloroethene) and H8 (tetrachloroethene, cis-1,2-dichloroethene, 1,2-dichloroethane and vinyl chloride).

For the shallow samples taken in 2011 and 2013 the determinands exceeding UKRfC have been summarised in Tables 21 and 22.

Table 21. Summary of Flux Box Data Assessment for Shallow Soils, 2011 data

No. of Min Max Mean No. of UKRfC Units Compound detects Value Value Conc. exceedances (µg/m³)

1,2-dichloro-3-methylbenzene µg/m³ 5 0.37 0.51 0 2 0.42* trichloroethene µg/m³ 30 0.81 673 75 9 18.2 tetrachloroethene µg/m³ 31 0.77 12334 1330 11 211 1,2-dichloroethane µg/m³ 30 1.11 167 32 8 0.42 benzene µg/m³ 2 1.39 5.69 4 1 4.90 * Surrogate UKRfC applied

Similarities can be seen between the shallow and deep data from 2011 where the key compounds reported at depth in vapour are also present in the shallow soil vapour at concentrations exceeding the UKRfC. In particular, 1,2-dichloroethane UKRfC exceedances from samples taken at depth were also noted in shallow soils in sample locations including L8, K7, K9 and H8. Vapour sampling locations are presented in Figure 5.

Table 22. Summary of Flux Box Data Assessment for Shallow Soils, 2013 data

No. of Min Max Mean No. of UKRfC Units Compound detects Value Value Conc. exceedances (µg/m³)

1,2,4- µg/m³ 2 7.25 7.53 7 2 3.50 trimethylbenzene

There are less similarities between the shallow data from 2011 and 2013; in 2013 only 1,2,4- trimethylbenzene was identified at concentrations exceeding the UKRfC. 1,2,4-trimethylbenzene was identified in three samples in the deep flux box testing and was not detected in the shallow samples taken in 2011.

Concentrations of trichloromethylbenzene were not reported in data from the 2011 or 2013 shallow monitoring, providing supporting evidence that the concentrations estimated to volatilise from deep soil in the SSAC were not present at surface. Low concentrations of dichloromethylbenzene were reported in the 2011 shallow flux box monitoring. The concentrations of these two contaminants have been compared to the UKRfC for 1,2- dichloroethane in the first instance. The results for these two compounds will be considered further in Section 6 of this report.

5.4. Soil to indoor air attenuation factor Elevated concentrations of VOCs were noted when compared directly with the UKRfC. However, VOC concentrations at the source (in the soil vapour) and at the receptor (in indoor air) are unlikely to be equal because of the dilution which occurs during vapour migration into a building. The amount of dilution which occurs (the dilution factor) can be estimated using the Johnson and Ettinger model (Ref. 30). The predicted dilution factor is known as the “soil vapour to indoor air attenuation factor”. This is applied in risk assessments where soil-derived vapour ingress to

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indoor air is a pathway. Use of the Johnson and Ettinger algorithm is consistent with UK guidance (Ref. 8).

The soil vapour to indoor air attenuation factor describes the relationship between the volume of air entering a given building from soil through the foundations (in a unit of time) and the volume of air being exchanged (in and out) from the living area of that building in the same unit of time. The attenuation factor is essentially a dilution factor from the soil vapour to the exposure medium, the indoor air of the building in question.

The attenuation factor is based on advective (pressure driven) flow from the soil into the building. Migration in the soil vapour phase occurs by diffusion and advection processes. Although diffusive flow into a building may also occur, in most cases, advection is considered the dominant mechanism for vapour entering a building.

The first step is to calculate an attenuation factor. In keeping with the CEM for the site, a two storey residential property as defined in SR3 (Ref. 8) has been assumed. It has also been assumed that the building lies directly above the source. As a conservative first step for this DQRA, it has been assumed that the soil comprises a sand as defined in SR3 (Ref. 8), rather than a less permeable clay (as is actually present on site at depth at the present time). The soil vapour to indoor air attenuation factor determined for a standard residential property as defined in SR3 (Ref. 8) and the site specific soil properties used to derive the SSAC is 0.0019, as calculated by the vapour calculation sheets in the CLEA modelling. If a site specific Type B or Type C soil material attenuation factor were to be calculated, it would be a factor of 1000 lower again.

5.4.1. Application of attenuation factor to Soil Vapour Results Rather than reduce the measured concentrations for each soil vapour sample by the soil vapour to indoor air attenuation factor, the UKRfC has been increased using the attenuation factor. This approach provides a single screening value to directly compare to the laboratory data.

The soil vapour concentrations measured on site, from deep and shallow sampling, do not exceed the revised UKRfC, in many cases, by several orders of magnitude. The assessment is presented in Appendix G.4. This provides empirical supporting evidence that residual soil concentrations are unlikely to generate concentrations of vapour which will exceed the HCV in ambient air at surface or within future residential buildings. As the shallow data is the most representative of the concentrations which would be expected at surface upon final development of the site, the data available to date has been summarised in Table 23.

Table 23. Summary of Flux Box Data Assessment for Shallow Soils, revised UKRfC No. of UKRfC with exceedances No. of Min Max attenuation Units of detects Value Value factor Compound attenuated (µg/m³) UKRfC 2011 Data 1,2-dichloro-3- µg/m³ 5 0.37 0.51 * * methylbenzene Trichloroethene µg/m³ 30 0.81 673 9600 0 Tetrachloroethene µg/m³ 31 0.77 12334 111230 0 1,2-dichloroethane µg/m³ 30 1.11 167 222 0 Benzene µg/m³ 2 1.39 5.69 2590 0 2013 Data 1,2,4-trimethylbenzene µg/m³ 2 7.25 7.53 1850 0 Notes: * There is no suitable HCV for 1,2-dichloro-3-methylbenzene. If the attenuation factor is applied to the maximum concentration reported, the resulting concentration anticipated in indoor air is 0.001µg/m³. Correspondence from the laboratory has confirmed that if trichloromethylbenzene compounds and other dichloromethylbenzene isomers were present above the limit of detection, they would have been reported in the 2013 monitoring. This correspondence is located in Appendix G.7.

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Although there are no exceedances of the UKRfC through the application of the attenuation factor, three contaminants of concern have been evaluated further to provide added confidence in the assessment. These are 1,2-dichloroethane, trichloromethylbenzene and dichloromethylbenzene and have been selected as a result of the soil DQRA.

5.5. Limitations The flux box monitoring standard operating procedure (SOP) is presented in the Vertase Flux Box Monitoring Factual Report in Appendix G.3. Some deviations from the SOP have been noted by Atkins. The most obvious of these is the period of time during which tenax tubes were monitored for during the 2011 monitoring round; the SOP details that the monitoring should take place over 24 hours whereas in some cases, the sampling period was for only one hour. However as stated previously, due to the potentially elevated concentrations there was concern of the over saturation of the tenax tubes and advice was taken by Vertase from the laboratory which suggests that sampling should not be undertaken for more than 100 minutes. The flow rate used at each sample location and pump type is also not presented in the report but this can be calculated.

Another key point of note regarding the vapour data available relates to the analytical suite selected. Some tenax tubes have been analysed for a specific suite (based on identified contaminants of concern) whereas others have been analysed for the top 10 peaks (i.e. the ten contaminants with the highest concentrations). The former approach has the risk of not identifying unexpected contaminants at high concentrations. While it is considered unlikely, the latter approach may not identify low concentrations of contaminants which have a very low HCV in relation to chronic exposure; therefore not reporting contaminants which are at levels of potential concern. The differences in methodology selected can be attributed to an improved understanding of the CSM and key contaminants of concern by Vertase as remediation and reinstatement works progressed. It is noted that the top 10 chemicals of concern approach is also consistent with the air quality monitoring undertaken at the site boundary.

The key contaminant of concern from the soil analysis (1,2-dichloroethane) was included within the soil vapour monitoring for the specific suite selected. As such, relevant contaminants (and the more toxic degradation product vinyl chloride) were assessed and the analytical approach is not considered to limit the application of the vapour data as a line of evidence. The top 10 highest concentration reporting approach does not impact the results of the monitoring as an attenuation factor has been applied and correspondence from the lab has confirmed that if trichloromethylbenzene and dichloromethylbenzene compounds were above the limit of detection in the 2013 monitoring, they could have been reported (Appendix G.7). The lowest VOC concentrations in the monitoring are lower than the UKRfC for toxic substances with the attenuation factor applied.

It is noted that the analytical data indicates that a tube was damaged. Results from this tube should therefore be treated with caution and it cannot be quantified what impact this can have on the conclusions of this report.

As with any ground investigation, there may be conditions pertaining to the site that have not been disclosed through the works undertaken and therefore could not be taken into account during the assessment. In particular, whilst every effort has been made to sample representative material from each of the media sampled, variation in ground conditions inevitably occurs. It is not always practicable, reasonable or necessary to consider a worst case scenario.

It is not practicable to monitor vapour emissions across the entirety of the surface of the site. The 2013 vapour monitoring survey was completed to target areas of concern where a soil source had been identified, to provide added confidence in the 2011 vapour data and support a lines of evidence approach. The sampling was not undertaken to provide a comprehensive data set. Vertase considers that they have achieved a balance and characterised the site sufficiently with the number of samples of vapour they have collected. The assessment in this report is therefore based on the data available to date and this is considered by Atkins to be a reasonable approach.

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6. Evaluation - Task 5

Exceedances of 1,2-dichloroethane, trichloromethylbenzene and dichloromethylbenzene were identified within the SV, BV and TP soil samples, where the true mean concentrations were estimated to exceed the SSAC.

6.1. Dichloromethylbenzene

6.1.1. Soil and Vapour Data Available The highest concentration of dichloromethylbenzene was identified in soils at F19, at 5.4m below final finished levels. The other concentrations in soil reported were lower and from greater depths. A statistical assessment was completed, using a surrogate SSAC based on 1,2-dichloroethane which identified uncertainty as to whether estimated exposure to the estimated true mean concentration would exceed the HCV for the two zones of the site assessed (north and south).

Dichloromethylbenzene was reported in the deep vapour flux box monitoring, the maximum concentration was reported in J10. It was also identified in the shallow vapour flux box monitoring in 2011 at locations G20 and H20, at levels marginally above the limit of detection (0.5µg/m3). Concentrations were not reported above the limit of detection in the 2013 flux box monitoring.

6.1.2. Derivation of Health Criteria Value There is insufficient information available at present to ascertain conclusively that the dichloromethylbenzene present in soil on site is alpha,alpha-dichlorotoluene or (e.g.) 2,3- dichlorotoluene. The initial DQRA followed the approach undertaken in the CNPI assessments. As alpha,alpha-dichlorotoluene is anticipated to hydrolyse rapidly upon contact with water based on the physical chemical data and other information available (Ref. 33), it is not considered likely that there is a viable or significant pathway to the indoor air of a building from the soil depths reported. As such, and given the vapour data available, it has been assumed that the dichlorotoluene is in e.g. the 2,3-dichlorotoluene or 1,2-dichlorotoluene form. In these forms, dichlorotoluene is not considered to be a carcinogenic mutagen.

There are no readily available reliable HCV data in the open literature for dichlorotoluene and consequently insufficient data for derivation of a robust HCV, based on data for the isomers. It is not considered robust to apply a surrogate UKRfC to the vapour data for this compound as it could result in a meaningless conclusion. The vapour data for this compound will therefore be assessed qualitatively.

6.1.3. Flux Box Testing

Flux box testing was undertaken by Vertase in 2011 during site remediation and in 2013 post remediation. Further information on flux box monitoring undertaken can be found in Section 5 and Appendices G.3 and G.4. This additional data assists in providing additional lines of evidence regarding the actual volatilisation of VOCs in soil.

Table 24. Comparison of Dichloromethylbenzene Soil Concentrations and Flux Box Results

Maximum Flux Box Maximum Flux Box Result Maximum Flux Box Result Soil Concentration Result (Shallow (Deep Samples) (Shallow Samples-2013) (µg/kg) Samples-2011) µg/m³ µg/m³ µg/m³ 26000 (F19, 4.4m) 2329 0.51 Not detected

It should be noted that concentrations reported of dichloromethylbenzene in the flux box testing were not the alpha chlorinated forms and thus not considered to be carcinogenic mutagens.

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Based on the soil data, there is not considered to be a widespread source in deep soils at the site. In considering the concentrations within the shallow vapour sampling, the concentrations that have been identified are very low. Should an attenuation factor be applied to the concentrations reported, it is considered that the levels could be considered negligible. A further safety factor can be applied through recognising that shallow vapour concentrations are at a depth of at least 1m below the final development level. As a result, no further assessment is considered necessary.

6.1.4. Additional Lines of Evidence Boundary Monitoring

Whilst the remediation works were being undertaken, Vertase undertook monitoring of VOCs in the ambient air at the site along the boundary. The data was reviewed by the Health Protection Agency (HPA) (now Public Health , PHE) and the summary of their findings can be located on the South Cambridgeshire District Council website (also in Appendix G.6).

The HPA reports were produced to assess potential risks to residents living in local villages during the remediation process from exposure to VOCs arising from the treatment of soils. It is noted that the HPA reports assumed an exposure model featuring different pathways and receptors to those included in the HHRA. Overall, 22 monthly monitoring reports were published. Concentrations of some VOCs were identified in ambient air. The HPA reported that “VOC emissions from the site are not of concern toxicologically and are therefore very unlikely to pose a risk to the health of nearby residents” (Ref. 31) during the remediation works.

The results of this boundary monitoring is considered to be relevant and to provide an additional indirect line of evidence. This is because it provides a measurement of concentrations of VOCs arising from the site and reaching the boundary in ambient air when mass excavations were being dug out and soil was being exposed, transported and treated. It would therefore be expected that during the period of the monitoring the vapour flux would be at its highest. Detectable concentrations of dichloromethylbenzene at 1 ppb (6.59 µg/m3) or higher were not reported as part of the boundary ambient air VOC monitoring.

It is unlikely that on-site ambient air concentrations post remediation will be any higher than these, especially since any residual contamination is buried at depth beneath compacted clay. Therefore, while an indirect comparison, this boundary data can be used as an additional line of evidence that as concentrations of dichloromethylbenzene were not detected at the boundary during the excavation of materials, dichloromethylbenzene is unlikely to be present in ambient air at completed ground levels.

6.1.5. Evaluation Summary for dichloromethylbenzene Although dichloromethylbenzene was reported in soils at depth at the site and in vapour monitoring from deep soils, significant concentrations have not been identified in the shallow vapour monitoring. Dichloromethylbenzene was not identified during the original site characterisation as a priority contaminant and given the available data, it is not expected to be widespread across the site. The concentrations reported in shallow vapour samples are considered to be low and if taking the attenuation factor and depth into account, negligible. No further works are considered necessary for dichloromethylbenzene.

6.2. Trichloromethylbenzene

6.2.1. Soil and Vapour Data Available The highest concentration of trichloromethylbenzene was identified in soils at F19, at 5.4m below final finished levels. The other concentrations in soil reported were lower and from greater depths. A statistical assessment was completed, using a surrogate SSAC based on 1,2-dichloroethane which identified that the estimated exposure to the estimated true mean concentration would exceed the HCV for the two zones of the site assessed (north and south).

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Trichloromethylbenzene was reported in the deep vapour flux box monitoring, the maximum concentration was reported in J10. It was not identified in the shallow vapour flux box monitoring in 2011 or in 2013. However, as a result of the soil and vapour monitoring, trichloromethylbenzene was identified as requiring further assessment.

6.2.2. Derivation of Health Criteria Value There is insufficient information available at present to ascertain conclusively that the trichloromethylbenzene present in soil on site is alpha,alpha,alpha-trichlorotoluene or (e.g.) 1,2,4- trichloromethylbenzene. Alpha,alpha,alpha-trichlorotoluene is reported to hydrolyse rapidly upon contact with water (Ref. 32) . A viable pathway to the indoor air of a building from the soil depths concentrations were reported at is not considered likely. As such, and given the vapour data available, it has been assumed that the trichloromethylbenzene is in e.g. the 1,2,4- trichlorotoluene form.

There are no readily available reliable inhalation HCV data in the open literature for trichloromethylbenzene and consequently insufficient data for derivation of a robust HCV, based on data for the isomers. It is not considered robust to apply a surrogate UKRfC to the vapour data for this compound as it could result in a meaningless conclusion. The vapour data for this compound will therefore be assessed qualitatively.

6.2.3. Flux Box Testing

Flux box testing was undertaken by Vertase in 2011 during site remediation and 2013 post remediation. Further information on flux box monitoring undertaken can be found in Section 5. This additional data assist in providing additional lines of evidence regarding the actual volatilisation of trichloromethylbenzene in soil.

Table 25. Comparison of Trichloromethylbenzene Soil Concentrations and Flux Box

Results

2011) 2013) - Location and Depth -

below final finished Result

Soil Soil

µg/m³ µg/m³

levels (µg/kg)

Box Box

Concentration Concentration

Maximum Flux Flux Maximum

Samples Samples

Result (Shallow (Shallow Result (Shallow Result

(Deep Samples) (Deep

Maximum Flux Box Box Flux Maximum Box Flux Maximum I9 BV 2400

The maximum concentration of trichloromethylbenzene in soil does not correlate to detectable concentrations in shallow vapour samples. The vapour data for the shallow soils indicate that concentrations were below the limit of detection and therefore can be considered as very low. If an attenuation factor was applied, the concentrations could be considered to be negligible. A further safety factor can be applied through recognising that shallow vapour concentrations are at a depth of at least 1m below the final development level. As a result, no further assessment is considered necessary.

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6.2.4. Additional Lines of Evidence Boundary Monitoring

As with dichloromethylbenzene, consideration has been given to the boundary monitoring results at locations agreed with the HPA in advance. The results of the boundary monitoring are considered to be relevant and to provide an additional indirect line of evidence. This is because it provides a measurement of concentrations of VOCs arising from the site and reaching the boundary in ambient air when mass excavations were being dug out and soil was being exposed, transported and treated. It would therefore be expected that during the period of the monitoring the vapour flux would be at its highest. Detectable concentrations of trichloromethylbenzene at 1 ppb (7.99 µg/m3) or higher were not reported as part of the boundary ambient air VOC monitoring.

It is unlikely that on-site ambient air concentrations post remediation will be any higher than these, especially since any residual contamination is buried at depth beneath compacted clay. Therefore, while an indirect comparison, this boundary data can be used as an additional line of evidence that as concentrations of were not detected at the boundary during the excavation of materials that these are unlikely to be present in ambient air at completed ground levels.

6.2.5. Evaluation Summary for trichloromethylbenzene Although trichloromethylbenzene was reported in soils at depth at the site and in vapour monitoring from deep soils, significant concentrations have not been identified in the shallow vapour monitoring. Trichloromethylbenzene was not identified during the original site characterisation as a priority contaminant and given the available data, it is not expected to be widespread across the site. The potential concentrations reported in shallow vapour samples are considered to be low and if taking the attenuation factor and sampling depth into account, negligible. No further works are considered necessary for trichloromethylbenzene.

6.3. 1,2-dichloroethane

6.3.1. Soils In undertaking further assessment for 1,2-dichloroethane, consideration was given to modifying the hydraulic conductivity (and thus effective air permeability) used. The source area identified is at the northern end of the site where the main excavations works took place. As discussed in Section 4.2, in this part of the site excavations were largely to depths between 4.5 m bgl and 6.0 m bgl and reinstatement in this part of the site consists of thicknesses of re-instated Type C up to 3.0 m beneath approximately 3.0 m of reinstated Type B material. As such, the 1,2- dichloroethane soil SSAC exceedances lie within the less permeable Type C material.

Consideration has been given to additional site specific permeability data for Type B material included by Vertase in Appendix K of their Contract Completion report (Ref. 1), and Type C material (supplied by Vertase and included in Appendix G of the Completion Report). The permeability of the Type C material is considered most relevant since thicknesses of up to 3.0 m are present in the source area identified, the source is within the Type C material (based on depths of exceedances) and the Type C material is the controlling factor in vapour flux from the source. The permeability values within Zone 2 for Type C material range from 4.0 x 10-6 m/s to 1.4 x 10-11 m/s.

The properties of the Type C material vary across the site and with depth. In assessing a representative value to reasonably account for this variation, the geometric mean has been calculated. This is considered to be the most appropriate value as it takes account of the orders of magnitude difference across the range of permeability values. The dataset was examined and no outliers were identified based on a log-normal distribution. The geometric mean of available permeability values for the Type C material within Zone 2 is 2.12 x 10-8 m/s and this value has been used within the further DQRA assessment. It is acknowledged that the dataset includes some individual samples which are more permeable than the value used. However, the aim of using the geometric mean is to characterise the whole Type C permeability dataset with a balance of conservatism and develop a single input value for CLEA.

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The suitable material to be placed within the top 1.0 m of the site has not been identified to date and therefore assumptions have been made regarding its properties for the 1,2-dichloroethane soil assessment that it will be no more permeable than the Type B soils. The depth to contamination was also adapted to be the shallowest depth of the excavation where exceedances of the SSAC were noted, at 5.0 m below final finish level (FFL).

The resulting assessment criterion for 1,2-dichloroethane is 3.91 mg/kg. Modelling is presented in Appendix G.1. Figure 4 illustrates the location of samples for 1,2-dichloroethane where concentrations exceed the revised SSAC.

It should be noted that the revised SSAC does not take into account two different soil types. If modelling were to allow for a more permeable soil type layer several metres above the clayey soil source, a lower SSAC could potentially be calculated. However, as discussed previously in the report, the controlling factor for vapour flux migration is from the clayey soil type at the source at depth, in the less permeable material. As additional evaluation is being completed through the use of empirical soil vapour data and the final design of the site is not known, the potential theoretical impact of this to the risk assessment has not been considered further.

Updated Statistical Assessment The statistical assessment for the SV, BV and TP samples was revisited considering the revised SSAC above. The findings are presented in Table 26.

Table 26. Updated statistical assessment

Contaminant No. of Distribution Sample Upper Cc Does the true Evidence samples Arithmetic Confidence (revised mean exceed Level Mean Limit SSAC) the Cc? µg/kg

1,2-dichloroethane 55 Non-normal 1557 4852 3910 Yes 91%

Notes: Evidence level – The calculated level of evidence against the null hypothesis (that the true mean is below the Cc).

As can be seen in Table 26, the arithmetic mean concentration of 1,2-dichloroethane does not exceed the revised SSAC. However, the UCL for 1,2-dichloroethane exceeded the revised SSAC. This will be considered further in Section 6.2.

6.3.2. Flux Box Testing As discussed in Section 5, flux box testing was undertaken by Vertase during the remediation to provide an additional line of evidence regarding the actual volatilisation of residual VOCs in the soil.

Flux Box Testing at Depth For 1,2-dichloroethane, the concentrations measured within the flux box testing at the base of the excavation have been compared to estimated concentrations at a depth of 5 m bgl from the CLEA DQRA modelling; the shallowest depth of exceedances.

Table 27. Comparison of 1,2-dichloroethane SSAC, soil and deep flux box results

Location and Depth Estimated Maximum soil Maximum Flux box Factor difference below final finished concentration in concentration result levels soil vapour * (µg/kg) and depth (µg/m3) (µg/m3)

H8, 6 m 103,000 1,700 (6 m bFFL) 2,204 ** 47

H8/9, 6 m 103,000 1,700 (6 m bFFL) 23.12 4455

H10, 6 m 103,000 2,100 (5 m bFFL) <0.65 >100,000

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Location and Depth Estimated Maximum soil Maximum Flux box Factor difference below final finished concentration in concentration result levels soil vapour * (µg/kg) and depth 3 (µg/m ) (µg/m3)

I9, 6.5 m 103,000 37,000 (7 m bFFL) <200 >460 11,000 (7 m bFFL)

I10, 6 m 103,000 5,500 (7 m bFFL) <0.61 >100,000

J9 103,000 2,400 (7 m bFFL) No Data

J10, 7.5 m 103,000 1,300 (7.5 m bFFL) <0.62 >100,000

Notes: * at the revised SSAC, based on a source depth of 5 m bgl ** Maximum value reported in the flux box testing for 1,2-dichloroethane

As shown in Table 27, there is a factor of at least 47 between the measured soil vapour concentration and the estimated soil vapour concentration at the SSAC. This provides evidence that the estimated concentrations of 1,2-dichloroethane in soil vapour are not occurring in practice and may reflect conservatism in the SR3 modelling algorithms.

The soil concentration at the highest flux box concentration (location H8) (1700 µg/kg) has been entered into the CLEA software from the further DQRA4, to calculate a soil vapour concentration. This results in a soil vapour concentration of 44,900 µg/m3, which is a factor of 20 higher than what was measured on site.

The reported flux box concentrations do not form an obvious correlation pattern with maximum soil concentrations. The highest flux box results have been recorded at a location where soil concentrations of 1,2-dichloroethane did not exceed the revised SSAC. As such, it is considered more applicable to consider the shallower flux box testing results which demonstrate what is expected to occur closer to the surface.

Flux Box Testing for Shallow Soils 1,2-dichloroethane was detected in two locations in the 2011 shallow flux box sampling and was not detected in the 2013 shallow flux box sampling. As previously discussed, the 2013 sampling locations were targeted at high soil concentrations of 1,2-dichloroethane.

Table 28. Comparison of 1,2-dichloroethane in soil and shallow flux box results

Location and Depth Maximum soil Maximum Flux box Maximum Flux box below final finished concentration result - 2011 result – April 2013 levels (µg/kg) and depth (µg/m3) (µg/m3)

H8 1,700 (6 m bFFL)

H8/9 1,700 (6 m bFFL)

37,000 (7 m bFFL) I9

J9 2,400 (7 m bFFL)

4 It should be noted that the permeability data for cell H8 at a depth of 5m below current finish levels is 3x10-8 m/s. These permeability values are consistent with what was used in the CLEA modelling.

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As well as the limit of detection not being reached by concentrations present, an additional level of safety can also be achieved through applying the indoor attenuation factor. This would significantly increase the assessment criterion from 0.42 µg/m³ to 222 µg/m³, for a sand soil. A further safety factor could be applied through recognising that these concentrations are at a depth of at least 1m below the final development level or applying an attenuation factor for a clayey soil.

6.3.3. Lines of Evidence

Boundary Monitoring

As with dichloromethylbenzene and trichloromethylbenzene, the boundary monitoring data can be considered. The results of this boundary monitoring is considered to be relevant and to provide an additional indirect line of evidence. This is because it provides a measurement of concentrations of VOCs arising from the site and reaching the boundary in ambient air when mass excavations were being dug out and soil was being exposed, transported and treated. It would therefore be expected that during the period of the monitoring the vapour flux would be at its highest. Detectable concentrations of 1,2-dichloroethane at 1 ppb (4.05 µg/m3) or higher were not reported as part of the boundary ambient air VOC monitoring.

It is unlikely that on-site ambient air concentrations post remediation will be any higher than these, especially since any residual contamination is buried at depth beneath compacted clay. Therefore, while an indirect comparison, this boundary data can be used as an additional line of evidence that the estimated concentrations in ambient air in the CLEA modelling are unlikely to be occurring in practice (based on site boundary monitoring). Taking this into account, it is considered that concentrations of 1,2-dichloroethane in ambient air are unlikely to cause a significant risk to future on-site residents.

6.3.4. Evaluation Summary for 1,2-dichloroethane Although concentrations of 1,2-dichloroethane in soil have not been dismissed as being below levels of potential concern through the soil modelling and soil statistical assessment, given the vapour data collected and the conservatism in the modelling including source depth, estimated exposure to future site residents from 1,2-dichloroethane concentrations reported are not considered to exceed the HCV.

Following the collection of post-remediation data in accordance with the verification strategy, estimated exposure to future site residents based on the CSM described in this report has been identified as being below the HCV.

It is considered that these lines of evidence add further justification to demonstrating that the soil at the site is unlikely to contain concentrations of VOC which would give rise to exposure exceeding the HCV, based on the available information to date.

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7. Summary and Conclusions - Task 6

A human health risk assessment has been completed using the Vertase 2012 Validation data through completion of six tasks. In the first instance, a GQRA was completed using soil GAC derived by Atkins in 2006, 2007 (Refs. 4, 5) and for CNPI in 2010-2012 (Ref. 13 to 22). Water WSVs were those derived by Atkins in 2011. The soil validation data were assessed in four groups, depending on their origin at the site and six months worth of groundwater data from January to June 2012 were assessed. Exceedances of inhalation only GAC were noted for a number of contaminants.

A DQRA was completed for those compounds where GAC were exceeded, which included tetrachloroethene, trichloroethene, cis-1,2-dichloroethene, 1,2-dichloroethane, some CNPI and vinyl chloride. The DQRA involved the use of site specific soil data to derive SSAC, most notably the saturated hydraulic conductivity and resulting calculated effective air permeability. Where surrogate SSAC were used, available data was revisited to ensure that the surrogate selection was not over-conservative and as a result, 1,2-dichloroethane was selected as a surrogate for trichloromethylbenzene and dichloromethylbenzene and a less conservative compound ((2,6- bis(1,1-dimethyl)-4-(1-methylpropyl)-phenol) was used as a surrogate for 1-(2-chloroethoxy)-2-(o- tolyloxy)-ethane. The SSAC were compared to the individual concentrations of contaminants which resulted in one contaminant remaining at levels of potential concern in soil; 1,2- dichloroethane. Due to the uncertainty in using 1,2-dichloroethane as a surrogate for dichloromethylbenzene and trichloromethylbenzene, it was considered appropriate bring the determinands forward for further assessment. Concentrations of contaminants of concern were not identified to exceed the SSAC for groundwater.

Consideration was given to the potential for combined exposure to vapours from soils and groundwater. The combined vapour risk from these two sources was estimated through assessing the hazard quotient from both groundwater and soil sources using CLEA and RBCA in forwards mode for the two boreholes where WSV were exceeded. The combined hazard quotients for H7 or I18 did not exceed 1. The potential vapour risk from groundwater was therefore not considered further.

A statistical assessment was then completed, considering the lateral distribution of soil contaminants. Further modelling was undertaken as part of the DQRA, where the saturated hydraulic conductivity, effective vapour permeability and depth were adjusted using site specific information. The statistical assessment was also updated.

Ambient vapour data and flux box vapour data collected during and post remediation works by Vertase, and observed by Atkins, were used to provide a key line of evidence. Vapour data collected by Vertase through flux box testing were compared to the UKRfCs. Flux box data collected from deep soils and from shallow soils were considered separately. An attenuation factor was also calculated to account for migration and dilution in indoor air to deep soils and to shallow soils. Although exceedances of UKRfC were noted, no exceedances were noted following application of the attenuation factor. For dichloromethylbenzene and trichloromethylbenzene, the concentrations likely to be present at surface upon final development were considered to be negligible. The evidence demonstrated that the concentrations of contaminants in ambient air estimated in the modelling were not occurring in practice.

It is considered that the evidence available to date demonstrate that the soil at the site does not contain concentrations of VOC which could give rise to vapour concentrations at levels of potential concern. On this basis and given the information available to date, the estimated exposure from concentrations of contaminants reported on site is considered unlikely to exceed the HCV. The objective for this piece of work is therefore considered to have been met without the requirement for further risk assessment or risk management actions.

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8. References

1. Vertase F.L.I., December 2012, Contract Completion Report, Former Bayer Crop Science Site, Hauxton, Cambridgeshire. 2. Vertase F.L.I., August 2012, Groundwater Validation Report and December 2012, Groundwater Validation Addendum Report, The Former Bayer Crop Science Site, Hauxton, Cambridgeshire. Data also available at: http://www.scambs.gov.uk/Environment/Pollution/LandPollution/BayerSite/monthly.htm 3. Vertase F.L.I., April 2009, Remediation Method Statement – Former Bayer Crop Science Site, Hauxton Cambridgeshire, April 2009 – Revision 6. 4. Atkins. August 2006 Remediation of Former Bayer Site, Hauxton. Preliminary Conceptual Model Report. Prepared for Bridgemere UK Limited and Harrow Estates Plc. 5. Atkins, July 2007 Former Bayer Agrochemicals Site, Hauxton, Cambridgeshire – Main Site, Derivation of Pesticide Soil Screening Values and Evaluation of the Spatial Extent of Contamination. 6. Vertase F.L.I., December 2012, Validation Completion Report, Former Bayer Crop Science Site, Hauxton, Cambridgeshire. Report No. 907BRI Rev B. 7. Defra and Environment Agency, 2002. Contaminated Land Exposure Assessment Model (CLEA): Technical Basis and Algorithms, Report CLR10, Environment Agency R&D Dissemination Centre, WRc plc, Swindon. 8. Environment Agency, 2009. Updated technical background to the CLEA model, Science Report SC050021/SR3. 9. Defra and Environment Agency, 2004. CLEA Briefing Note 1: Update on the dermal pathway. 10. Defra and Environment Agency, 2004. CLEA Briefing Note 2: Update on estimating vapour intrusion into buildings. 11. Defra and Environment Agency, 2004. CLEA Briefing Note 3: Update of supporting values and assumptions describing UK building stock. 12. Defra and Environment Agency, 2005. CLEA Briefing Note 4: An update on deriving Soil Guideline Values based on combined intake from individual routes of exposure. 13. Atkins Ltd., 2010, ‘Former Bayer Crop Science, Hauxton, Harrow Estates, Protocol for assessment and reporting of Characterisation Samples showing Contaminants Not Previously Identified’, July 2010 – Revision 0. 14. Atkins Ltd., 2010, ‘Former Bayer Crop Science, Hauxton: Risk Assessment of Contaminants Not Previously Identified’, 8th July 2010. 15. Atkins Ltd., 2010, ‘Former Bayer Crop Science, Hauxton: Risk Assessment of Contaminants Not Previously Identified; Grid Cells H10,I10, J10, K10 NAPL, K11, K12, K13 sand & gravel, K13 chalk, L11, L12 and L13’, 18th August 2010. 16. Atkins Ltd., 2010, ‘Former Bayer Crop Science, Hauxton: Risk Assessment of Contaminants Not Previously Identified; Grid Cells J12, J13’, 14th September 2010. 17. Atkins Ltd., 2010, ‘Former Bayer Crop Science, Hauxton: Risk Assessment of Contaminants Not Previously Identified; Grid Cells H14, H15, I11, I12, I13, I14, I15 and J14’, 22nd September 2010. 18. Atkins Ltd., 2010, ‘Former Bayer Crop Science, Hauxton: Risk Assessment of Contaminants Not Previously Identified; Grid Cell H11, H12, H13 and J15 (CNPI Letter No. 5)’, 27th October 2010. 19. Atkins Ltd., 2010, ‘Former Bayer Crop Science, Hauxton: Risk Assessment of Contaminants Not Previously Identified; Grid Cells G12, G13, G14, G17 and H17 (CNPI letter No. 6)’, 22nd November 2010. 20. Atkins Ltd., 2010, ‘Former Bayer Crop Science, Hauxton: Risk Assessment of Contaminants Not Previously Identified; Grid Cells G10-G11, G15, I6, L4-L5, M4-M9, N3-N6 (CNPI Letter No. 7)’, 30th November 2010. 21. Atkins Ltd., 2011, ‘Former Bayer Crop Science, Hauxton: Risk Assessment of Contaminants Not Previously Identified; Grid Cells D14, D15, E12, E13, E14, E15, F11, F12, F13, F15 and F16 (CNPI letter No. 8)’, 21st February 2011. 22. Atkins Ltd., 2011, ‘Former Bayer Crop Science, Hauxton: Risk Assessment of Contaminants Not Previously Identified; Treatment Bed TB100 and Grid Cells J13, K12 and K13 (CNPI letter No. 9)’, 24th May 2011. 23. Correspondence between Claire Sproats (Health and Environmental Services) to Nigel Blazeby (Planning) dated 20 August 2010, 20 April 2011 and 21 October 2010, entitled “Risk assessments for CNPIs as per condition 9 of S/2307/06/F”.

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24. Baker, K., Hayward, H., Potter, L., Bradley, D., MacLeod, C., 2009. The VOCs Handbook, investigating, assessing and managing risks from inhalation of VOCs at land affected by contamination. CIRIA C682. 25. Environment Agency, 2008, Compilation of data for priority organic contaminants for derivation of soil guideline values. Science Report SC050021/SR7. 26. Vertase, 2012, ‘Post-Remediation Quantitative Risk Assessment for Controlled Waters’, Former Bayer Crop Science Site, Hauxton, Cambridgeshire’, August 2012. 27. CIEH/CL:AIRE, 2008, Guidance on Comparing Soil Contamination Data with a Critical Concentration, May 2008. 28. Environment Agency, 2004. Model Procedures for the Management of Land Contamination (CLR11) 29. Environment Agency, 2009. Human Health Toxicological Assessment Of Contaminants In Soil. Science Report SCO50021/SR2. 30. Johnson, P. C., and R. A. Ettinger, 1991. Heuristic Model for Predicting the Intrusion of Contaminant Vapours into Buildings. Environmental Science and Technology, v. 25, n. 8, p. 1445 – 1452. 31. HPA, 2012 ‘Assessment of emissions to air from the former Bayer site at Hauxton, Cambridgeshire’, http://www.scambs.gov.uk/Environment/Pollution/LandPollution/BayerSite/monthly.htm 32. OECD, SIDS, 2004. Alpha,alpha,alpha-Trichlorotoluene (Trichloromethylbenzene), CAS N°:98-07-7. http://www.inchem.org/documents/sids/sids/98077.pdf Last accessed August 2013. 33. TOXNET http://toxnet.nlm.nih.gov/

.

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Hauxton Post-Remediation Human Health Risk Assessment

Appendix A. Relevant Vertase Drawings

Hauxton Post-Remediation Human Health Risk Assessment

Appendix B. Human Health Screening Values

Author Atkins Revision 1 Date 31/03/2011

Title WSVs derived using CLEA for a Residential land use

PLEASE NOTE These values are provided exclusively for the use of subscribers to www.atrisksoil.co.uk. In accordance with the terms and conditions of the atrisksoil website the information is for the sole use of the user and by receiving or obtaining any information contained herein the user agrees that at all times they will keep secret and confidential and shall procure and safeguard that their directors and employees keep secret and confidential all business and trade secrets and any information of a confidential nature relating to the processes, affairs, methods, and data belonging to Atkins Limited which they may have received or obtained in the performance of or otherwise as a direct or indirect result of entering into any agreement with Atkins Limited.

Any information contained herein is protected by copyright and other intellectual property laws. Any unauthorised copying, distribution, public display, public performance [and preparation of derivative works] from any information contained herein are prohibited by copyright law. By using the atrisksoil service the

Residential WSV Notes

Name (mg/L) 1,1,2-Trichloroethane 2.23 d 1,1-Dichloroethane 11.4 c 1,1-Dichloroethene 0.683 b 1,2,4-Trimethylbenzene 0.110 b 1,2-Dichloropropane 0.0969 b 2,4-Dimethylphenol 291 c 2,4-Dinitrotoluene 3250 a 2,6-Dinitrotoluene 921 a 2-Chloronaphthalene 0.695 c Users must consider total exposure from all methylphenol isomers and not consider them in isolation. In line with the approach published by EIC when assessing total cresols, the lowest WSV of each methylphenol isomer may be chosen to compare to 2-Methylphenol 11000 c the total methylphenol concentration. Users must consider total exposure from all methylphenol isomers and not consider them in isolation. In line with the approach published by EIC when assessing total cresols, the lowest WSV of each methylphenol isomer may be chosen to compare to 3-Methylphenol 17900 c the total methylphenol concentration. Users must consider total exposure from all methylphenol isomers and not consider them in isolation. In line with the approach published by EIC when assessing total cresols, the lowest WSV of each methylphenol isomer may be chosen to compare to 4-Methylphenol 12000 c the total methylphenol concentration. Biphenyl 64.4 a The saturation limit has been exceeded in the calculation. At the aqueous solubility limit the hazard quotient for both indoor and outdoor pathways was less than 0.01 and therefore no risk based number is considered appropriate.

In line with the EIC report section 3.7, where the toxicity effects are the same, the potential additivity of phthalates should be considered by assessors when using the WSV for these substances. Guidance on additivity is provided in the Environment Bis (2-ethylhexyl) phthalate No WSV e Agency for England and Wales SR2 document. Bromobenzene 0.941 d Bromodichloromethane 0.0725 b Bromoform 15.9 c The saturation limit has been exceeded in the calculation. At the aqueous solubility limit the hazard quotient for both indoor and outdoor pathways was less than 0.01 and therefore no risk based number is considered appropriate.

In line with the EIC report section 3.7, where the toxicity effects are the same, the potential additivity of phthalates should be considered by assessors when using the WSV for these substances. Guidance on additivity is provided in the Environment Butyl benzyl phthalate No WSV e Agency for England and Wales SR2 document. Chloroethane 41.5 c Chloromethane 0.0531 b Cis 1,2 Dichloroethene 0.548 b Dichloromethane 13.6 d In line with the EIC report section 3.7, where the toxicity effects are the same, the potential additivity of phthalates should be considered by assessors when using the WSV for these substances. Guidance on additivity is provided in the Environment Diethyl Phthalate 4340 a Agency for England and Wales SR2 document. In line with the EIC report section 3.7, where the toxicity effects are the same, the potential additivity of phthalates should be considered by assessors when using the WSV for these substances. Guidance on additivity is provided in the Environment Di-n-butyl phthalate 230 a Agency for England and Wales SR2 document.

Confidential March 2011 1 ATRISKsoil Author Atkins Revision 1 Date 31/03/2011

Title WSVs derived using CLEA for a Residential land use

PLEASE NOTE These values are provided exclusively for the use of subscribers to www.atrisksoil.co.uk. In accordance with the terms and conditions of the atrisksoil website the information is for the sole use of the user and by receiving or obtaining any information contained herein the user agrees that at all times they will keep secret and confidential and shall procure and safeguard that their directors and employees keep secret and confidential all business and trade secrets and any information of a confidential nature relating to the processes, affairs, methods, and data belonging to Atkins Limited which they may have received or obtained in the performance of or otherwise as a direct or indirect result of entering into any agreement with Atkins Limited.

Any information contained herein is protected by copyright and other intellectual property laws. Any unauthorised copying, distribution, public display, public performance [and preparation of derivative works] from any information contained herein are prohibited by copyright law. By using the atrisksoil service the

Residential WSV Notes

Name (mg/L) The saturation limit has been exceeded in the calculation. At the aqueous solubility limit the hazard quotient for both indoor and outdoor pathways was less than 0.01 and therefore no risk based number is considered appropriate.

In line with the EIC report section 3.7, where the toxicity effects are the same, the potential additivity of phthalates should be considered by assessors when using the WSV for these substances. Guidance on additivity is provided in the Environment Di-n-octyl phthalate No WSV e Agency for England and Wales SR2 document. Hexachloroethane 0.0388 d Iso-propylbenzene 3.89 c Methyl tert-butyl ether 352 c Propylbenzene 12.3 c Styrene 38.6 c Trans 1,2 Dichloroethene 0.676 b Tributyl tin oxide 0.423 c Acenaphthene 375 a The saturation limit has been exceeded in the calculation. At the aqueous solubility limit the hazard quotient for both indoor and outdoor pathways was less than 0.01 and Anthracene No WSV e therefore no risk based number is considered appropriate. Benzo(a)anthracene 0.0536 a Benzo(a)pyrene 0.0638 a The saturation limit has been exceeded in the calculation. At the aqueous solubility limit the hazard quotient for both indoor and outdoor pathways was less than 0.01 and Benzo(b)fluoranthene No WSV e therefore no risk based number is considered appropriate. The saturation limit has been exceeded in the calculation. At the aqueous solubility limit the hazard quotient for both indoor and outdoor pathways was less than 0.01 and Benzo(g,h,i)perylene No WSV e therefore no risk based number is considered appropriate. The saturation limit has been exceeded in the calculation. At the aqueous solubility limit the hazard quotient for both indoor and outdoor pathways was less than 0.01 and Benzo(k)fluoranthene No WSV e therefore no risk based number is considered appropriate. The saturation limit has been exceeded in the calculation. At the aqueous solubility limit the hazard quotient for both indoor and outdoor pathways was less than 0.01 and Chrysene No WSV e therefore no risk based number is considered appropriate. Dibenz(ah)anthracene 0.0237 a The saturation limit has been exceeded in the calculation. At the aqueous solubility limit the hazard quotient for both indoor and outdoor pathways was less than 0.01 and Fluoranthene No WSV e therefore no risk based number is considered appropriate. The saturation limit has been exceeded in the calculation. At the aqueous solubility limit the hazard quotient for both indoor and outdoor pathways was less than 0.01 and Fluorene No WSV e therefore no risk based number is considered appropriate. The saturation limit has been exceeded in the calculation. At the aqueous solubility limit the hazard quotient for both indoor and outdoor pathways was less than 0.01 and Indeno(1,2,3-cd)pyrene No WSV e therefore no risk based number is considered appropriate. The saturation limit has been exceeded in the calculation. At the aqueous solubility limit the hazard quotient for both indoor and outdoor pathways was less than 0.01 and Pyrene No WSV e therefore no risk based number is considered appropriate. Benzene 0.0888 b Toluene 96.4 c Ethylbenzene 13.4 c Based on information in the Environment Agency Xylene SGV report published in March 2009. Users must consider exposure from all xylene isomers and not consider them in isolation. The lowest xylene WSV could be chosen to compare to the sum of o-xylene 5.00 c xylene concentrations.

Confidential March 2011 2 ATRISKsoil Author Atkins Revision 1 Date 31/03/2011

Title WSVs derived using CLEA for a Residential land use

PLEASE NOTE These values are provided exclusively for the use of subscribers to www.atrisksoil.co.uk. In accordance with the terms and conditions of the atrisksoil website the information is for the sole use of the user and by receiving or obtaining any information contained herein the user agrees that at all times they will keep secret and confidential and shall procure and safeguard that their directors and employees keep secret and confidential all business and trade secrets and any information of a confidential nature relating to the processes, affairs, methods, and data belonging to Atkins Limited which they may have received or obtained in the performance of or otherwise as a direct or indirect result of entering into any agreement with Atkins Limited.

Any information contained herein is protected by copyright and other intellectual property laws. Any unauthorised copying, distribution, public display, public performance [and preparation of derivative works] from any information contained herein are prohibited by copyright law. By using the atrisksoil service the

Residential WSV Notes

Name (mg/L) Based on information in the Environment Agency Xylene SGV report published in March 2009. Users must consider exposure from all xylene isomers and not consider them in isolation. The lowest xylene WSV could be chosen to compare to the sum of m-xylene 4.10 c xylene concentrations. Based on information in the Environment Agency Xylene SGV report published in March 2009. Users must consider exposure from all xylene isomers and not consider them in isolation. The lowest xylene WSV could be chosen to compare to the sum of p-xylene 4.29 c xylene concentrations. Phenol 1690 d Mercury (methyl) 45.5 c Mercury (elemental) 0.00463 c Naphthalene 0.952 c

Benzene is the only constituent of this fraction (TPHCWG 1997). Based on information TPH aromatic C5-C7 0.0888 b within the Environment Agency Benzene SGV report published in March 2009

Toluene is the only constituent of this fraction (TPHCWG 1997). Based on information TPH aromatic C7-C8 96.4 c within the Environment Agency Toluene SGV report published in March 2009. TPH aromatic C8-C10 0.985 c TPH aromatic C10-C12 3.87 c TPH aromatic C12-C16 10.5 a TPH aliphatic C5-C6 1.93 c TPH aliphatic C6-C8 1.40 c TPH aliphatic C8-C10 0.0296 c TPH aliphatic C10-C12 0.0228 c TPH aliphatic C12-C16 0.00547 a 1,2-dichloroethane 0.0373 b 1,1,1-trichloroethane 13.1 c 1,1,1,2-Tetrachloroethane 1.05 d 1,1,2,2-Tetrachloroethane 6.89 d Carbon tetrachloride 0.0229 b Chlorobenzene (mono) 13.7 c Tetrachloroethene 1.66 c Trichloroethene 0.222 b Vinyl chloride 0.00248 b Chloroform/Trichloromethane 3.88 d Dinoseb 0.110 d Trichloromethylbenzene 0.000690 b Nicotine 573 b Formaldehyde 21.6 b The saturation limit has been exceeded in the calculation. At the aqueous solubility limit the hazard quotient for both indoor and outdoor pathways was less than 0.01 and Prochloraz No WSV e therefore no risk based number is considered appropriate. 2,6-bis(1,1-dimethyl)-4-(1-methylpropyl)-phenol13.2 a 2,4-Dichloro-o-cresol 1960 a Dibromochloromethane 0.394 b DDD 7.18 a

Notes:Where both indoor and outdoor values derived by RBCA were greater than the saturation limit, the hazard quotient for the indoor pathway was considered. If the hazard quotient was greater than 0.01, the hazard quotients were used to calculate a risk based a value (not limited by the saturation limit). The calculated indoor and calculated outdoor values have been integrated in line with SNIFFER (2003). b Where indoor and outdoor values were presented by RBCA, these have been integrated in line with SNIFFER (2003). Where indoor values were presented by RBCA, and the outdoor values were greater than the saturation limit, the hazard quotient c for the outdoor pathway was considered. If the hazard quotient for the outdoor pathway was less than 0.1, the indoor values have

Confidential March 2011 3 ATRISKsoil Author Atkins Revision 1 Date 31/03/2011

Title WSVs derived using CLEA for a Residential land use

PLEASE NOTE These values are provided exclusively for the use of subscribers to www.atrisksoil.co.uk. In accordance with the terms and conditions of the atrisksoil website the information is for the sole use of the user and by receiving or obtaining any information contained herein the user agrees that at all times they will keep secret and confidential and shall procure and safeguard that their directors and employees keep secret and confidential all business and trade secrets and any information of a confidential nature relating to the processes, affairs, methods, and data belonging to Atkins Limited which they may have received or obtained in the performance of or otherwise as a direct or indirect result of entering into any agreement with Atkins Limited.

Any information contained herein is protected by copyright and other intellectual property laws. Any unauthorised copying, distribution, public display, public performance [and preparation of derivative works] from any information contained herein are prohibited by copyright law. By using the atrisksoil service the

Residential WSV Notes

Name (mg/L) Where indoor values were presented by RBCA, and the outdoor values were greater than the saturation limit, the hazard quotient d for the outdoor pathway was considered. If the hazard quotient for the outdoor pathway was greater than 0.1 but less than 1, the hazard quotient was used to calculate a risk based value (not limited by the saturation limit). The indoor and calculated outdoor Wherevalues werethe indoor integrated and outdoor in line with values SNIFFER derived (2003). by RBCA were greater than the saturation limit, the hazard quotient for the indoor pathway was considered. The hazard quotient was less than 0.01 and no risk based number is considered appropriate. In this e case 'no WSV' is presented.

Only inhalation exposure pathways are considered as presented within the input parameters. The potential presence of free product should be assessed to ensure no further risk assessment is required. TPH >C16 are not considered to be volatile according to TPHCWG. Consequently no WSV have been derived. All values provided are rounded to 3 significant figures. In some instances the risk based value may be lower than the laboratory detection limit or the drinking water standard. Please see the Frequently Asked Questions for more advice.

Confidential March 2011 4 ATRISKsoil

Hauxton Post-Remediation Human Health Risk Assessment

B.1. Human Health Generic Assessment Criteria

Human health generic assessment criteria based on inhalation pathways only where possible – at or greater than 0.65 m depth

Concentration in Contaminant Derivation soil (mg/kg) Ethylbenzene Soil Guideline Value (SGV) 9 Phenol SGV 78 Xylene Atkins 2006 Soil Screening Value (SSV) 2.5 Toluene 2005 SGV 3 Vinyl chloride Atkins 2006 SSV 0.0005 Naphthalene Atkins 2006 SSV 4.4 1,2-dichloroethane Atkins 2006 SSV 0.003 Trichloroethene Atkins 2006 SSV 0.1 Tetrachloroethene Atkins 2006 SSV 0.76 Pentachlorophenol Atkins 2006 SSV 16 Surrogate Atkins 2006 SSV 1,2,4-trichlorobenzene 1.50 (chlorobenzene) Surrogate Atkins 2006 SSV 1,2-dichlorobenzene 1.50 (chlorobenzene) Surrogate Atkins 2007 SSV 2,4,6-Trichlorophenol 16 (Pentachlorophenol) Surrogate Atkins 2006 SSV (vinyl Cis-1,2-Dichloroethene 0.0005 chloride) Atkins ‘Contaminants Not Previously Practicable Limit of 1,2-bis(2,4,6-trichlorophenoxy)ethane Identified’ (CNPI) GAC Detection Practicable Limit of 1-(2-Chloroethoxy)-2-(o-Tolyloxy)-ethane Atkins CNPI GAC Detection Practicable Limit of 2,3,6-Trichlorotoluene Atkins CNPI GAC Detection 2,4-Dichloro-o-cresol Atkins CNPI GAC 2440 2,6-bis(1,1-dimethylethyl)-4-(1-methylpropyl)- Atkins CNPI GAC 238 phenol Surrogate Atkins CNPI GAC (2,6-bis(1,1- 2,6-bis(1-methylpropyl)-phenol 238 dimethylethyl)-4-(1-methylpropyl)-phenol) Bis(2-ethylhexyl) maleate Surrogate Atkins 2009 SSV (benzene) 0.0928 Dichloromethylphenol Atkins CNPI GAC 2440 Dinoseb Atkins CNPI GAC 0.0616 Surrogate Atkins 2006 SSV (vinyl Trichloromethylbenzene 0.0005 chloride) Surrogate Atkins 2006 SSV (vinyl Dichloromethylbenzene 0.0005 chloride) 1-Methylnapthalene Surrogate Atkins 2009 SSV (benzene) 0.0928 Surrogate Atkins 2006 SSV (vinyl Dichlorotoluene 0.0005 chloride) Prochloraz Atkins CNPI GAC 22300 Indane Atkins CNPI GAC Evaluation Part of TPH CWG Nicotine Atkins CNPI GAC 156 Dimethylnaphthalene Surrogate Atkins 2006 SSV (naphthalene) 4.4 Oxathiane 4,4-dioxide Surrogate Atkins 2009 SSV (benzene) 0.0928 Surrogate Atkins 2006 SSV (vinyl 2,3-dichlorotoluene 0.0005 chloride) 2-chlorobenzalazine Surrogate Atkins 2009 SSV (benzene) 0.0928 Dichlorocresol Atkins CNPI GAC 2440 Ethyltoluene Atkins CNPI GAC Evaluation Part of TPH CWG Surrogate Atkins CNPI GAC (2,6-bis(1,1- Bis(methylpropyl)phenol 238 dimethylethyl)-4-(1-methylpropyl)-phenol) Dichlorodiphenyldichloroethane Atkins CNPI GAC 932 Dibromochloromethane Atkins CNPI GAC 0.0658 Ethylmethylphenol Surrogate Atkins 2009 SSV (benzene) 0.0928

Hauxton Post-Remediation Human Health Risk Assessment

Appendix C. Generic Human Health Risk Assessment

Hauxton Post-Remediation Human Health Risk Assessment

C.1. Side, Base and Trial pit Validation GQRA

Revised SV, BV, TP validation samples summary table

% above Number of Minimum Maximum Second highest Average Number of assessment Assessment Source of assessment Determinand Units samples value value value Range concentration exceedances criteria criteria criteria Electrical Conductivity µS/CM 395 10 8200 7600 10- 8200 2399 0 0 - - pH 395 6.5 20 11.7 6.5- 20 8 0 0 - - Moisture % 350 4.9 84 38 4.9- 84 19 0 0 - - Dimefox µg/kg 406 10 100000 100 10- 100000 258 0 0 NA Not volatile Ethofumesate µg/kg 406 10 100000 27000 10- 100000 509 0 0 NA Not volatile Hempa µg/kg 409 0.1 100000 13000 0.1- 100000 325 0 0 NA Not volatile Schradan µg/kg 409 10 100000 5700 10- 100000 299 0 0 NA Not volatile Simazine µg/kg 402 10 3300 1800 10- 3300 34 0 0 NA Not volatile Dicamba µg/kg 395 0.01 240 200 0.01- 240 19 0 0 NA Not volatile Phenoxy Acetic acid herbicide: Dichlorprop µg/kg 395 0.01 950 200 0.01- 950 20 0 0 NA Not volatile Phenoxy Acetic acid herbicide: MCPA µg/kg 395 0.01 73000 46000 0.01- 73000 682 0 0 NA Not volatile Phenoxy Acetic acid herbicide: Mecoprop µg/kg 395 0.01 5900 3800 0.01- 5900 88 0 0 NA Not volatile Surrogate Atkins SSV 2,4,6-Trichlorophenol µg/kg 395 0.1 2000 1000 0.1- 2000 117 0 0 16000 (Pentachlorophenol) 2-Methyl-4,6-dinitrophenol µg/kg 395 0.1 1000 1000 0.1- 1000 105 0 0 NA Not volatile 4-Chloro-2-methylphenol µg/kg 395 0.1 27000 25000 0.1- 27000 744 0 0 NA Not volatile Bis (2-chloroethyl) ether µg/kg 395 0.1 1100000 550000 0.1- 1100000 7611 0 0 NA Not volatile Phenol µg/kg 395 0.1 1000 1000 0.1- 1000 114 0 0 78000 Hauxton SSV Surrogate Atkins SSV 1,2-Dichlorobenzene µg/kg 395 5 5100 1300 5- 5100 28 1 0 1500 (chlorobenzene) 1,2-Dichloroethane µg/kg 395 5 37000 17000 5- 37000 228 395 100 3 Atkins SSV Surrogate Atkins SSV Cis-1,2-Dichloroethylene µg/kg 395 5 1700 1500 5- 1700 30 395 100 0.5 (Vinyl Chloride) Cyclohexanone µg/kg 395 10 100 100 10- 100 15 0 0 NA Not volatile Tetrachloroethylene µg/kg 392 5 91000 34000 5- 91000 709 32 8 760 Atkins SSV Toluene µg/kg 395 1 8880 3200 1- 8880 76 2 1 3000 SGV Trichloroethylene µg/kg 395 5 3700 1900 5- 3700 56 31 8 100 Atkins SSV Vinyl chloride monomer µg/kg 395 5 62 50 5- 62 8 395 100 0.5 Atkins SSV Xylene (Total) µg/kg 395 1 2000 490 1- 2000 12 0 0 2500 Hauxton SSV 1,2-bis(2,4,6- trichlorophenoxy)ethane µg/kg 0 0 0 - 0- 0 0 0 - 5 Practicable LOD 1-(2-Chloroethoxy)-2-(o- Tolyloxy)-ethane µg/kg 3 160 400 260 160- 400 273 3 100 5 Practicable LOD 2(1-methylpropyl)-phenol µg/kg 0 0 0 - 0- 0 0 0 - 238000 Derived SSV 2,3,6-Trichlorotoluene µg/kg 0 0 0 - 0- 0 0 0 - 5 Practicable LOD 2,4-Dichloro-o-cresol µg/kg 0 0 0 - 0- 0 0 0 - 2440000 Derived SSV 2,6-bis(1,1-dimethylethyl)-4-(1- methylpropyl)-phenol µg/kg 0 0 0 - 0- 0 0 0 - 238000 Derived SSV

2,6-bis(1-methylpropyl)-phenol µg/kg 0 0 0 - 0- 0 0 0 - 238000 Derived SSV Surrogate SSV 2009 Bis(2-ethylhexyl) maleate µg/kg 0 0 0 - 0- 0 0 0 - 92.8 (benzene) Dichloromethylphenol µg/kg 13 100 8750 8400 100- 8750 3293 0 0 2440000 Derived SSV 2-Methylnapthalene µg/kg 0 0 0 - 0- 0 0 0 - NA Not HH priority Dinoseb µg/kg 0 0 0 - 0- 0 0 0 - 61.6 CNPI GAC Trichlorobenzeneamine µg/kg 2 240 900 240 240- 900 570 0 0 NA Not Volatile Trichloromethylbenzene µg/kg 13 120 120000 19000 120- 120000 13045 13 100 5 Practical LOD Surrogate SSV, Vinyl Dichloromethylbenzene µg/kg 1 26000 26000 - 26000- 26000 26000 1 100 0.5 chloride 1-Methylnapthalene µg/kg 1 280 280 - 280- 280 280 1 100 92.8 Derived SSV Surrogate SSV, Vinyl Dichlorotoluene µg/kg 5 550 9600 1070 550- 9600 2564 5 100 0.5 chloride Prochloraz µg/kg 0 0 0 - 0- 0 0 0 - 22300000 Derived SSV Indane µg/kg 0 0 0 - 0- 0 0 0 - NA TPH CWG Nicotine µg/kg 0 0 0 - 0- 0 0 0 - 156000 Derived SSV Surrogate 2006 SSV Dimethylnaphthalene µg/kg 0 0 0 - 0- 0 0 0 - 4400 (Naphthalene) Aldrin µg/kg 0 0 0 - 0- 0 0 0 - NA Not volatile Dieldrin µg/kg 0 0 0 - 0- 0 0 0 - NA Not volatile DDT µg/kg 0 0 0 - 0- 0 0 0 - NA Not volatile Surrogate SSV, Trichlorobenzene µg/kg 1 13000 13000 - 13000- 13000 13000 1 100 1500 Chlorbenzene

Trichloro(chloromethyl)benzene µg/kg 1 13000 13000 - 13000- 13000 13000 0 0 - - Trichloronitrobenzene µg/kg 1 5000 5000 - 5000- 5000 5000 0 0 - - Acenaphthene µg/kg 0 0 0 - 0- 0 0 0 - NA Not volatile Fluorene µg/kg 0 0 0 - 0- 0 0 0 - NA Not volatile Phenanthrene µg/kg 0 0 0 - 0- 0 0 0 - NA Not volatile Fluoranthene µg/kg 0 0 0 - 0- 0 0 0 - NA Not volatile Pyrene µg/kg 0 0 0 - 0- 0 0 0 - NA Not volatile Surrogate 2006 Atkins Oxathiane 4,4-dioxide µg/kg 0 0 0 - 0- 0 0 0 - 92.8 SSV (benzene) Naphthalene µg/kg 0 0 0 - 0- 0 0 0 - 4400 Atkins SSV Mixed isomers of DDD DDE and DDT µg/kg 1 9300 9300 - 9300- 9300 9300 0 0 932000 Atkins SSV for DDD Benzo(b/k)fluoranthene µg/kg 0 0 0 - 0- 0 0 0 - NA Not volatile Unidentified DDD,DDE and DDT compounds µg/kg 0 0 0 - 0- 0 0 0 - 932000 Derived SSV Meta/Para Ethyltoluene µg/kg 2 118 553 118 118- 553 336 0 0 1590 Derived SSV TPH (C8-C14) µg/kg 1 2000 2000 - 2000- 2000 2000 0 0 - - Copper µg/kg 2 22000 28000 22000 22000- 28000 25000 0 0 NA Not volatile Lead µg/kg 2 76000 77000 76000 76000- 77000 76500 0 0 NA Not volatile 380000- Manganese µg/kg 2 380000 740000 380000 740000 560000 0 0 NA Not volatile Nickel µg/kg 2 19000 20000 19000 19000- 20000 19500 0 0 NA Not volatile Zinc µg/kg 2 67000 88000 67000 67000- 88000 77500 0 0 NA Not volatile Unidentified branched aromatic alcohol circa C14 µg/kg 0 0 0 - 0- 0 0 0 - NA - Unidentified branched aromatic alcohol circa C18 µg/kg 0 0 0 - 0- 0 0 0 - NA - Unidentified aromatic hydrocarbon containing CI circa C18 µg/kg 0 0 0 - 0- 0 0 0 - - - Ethofumesate µg/kg 0 0 0 - 0- 0 0 0 - NA Not volatile Unidentified aromatic amine containing CI circa C11 µg/kg 0 0 0 - 0- 0 0 0 - NA - Unidentified aromatic hydrocarbon containing O circa C16-18 µg/kg 0 0 0 - 0- 0 0 0 - NA - 2-methylphenol µg/kg 1 11000 11000 - 11000- 11000 11000 0 0 NA - Surrogate Atkins SSV 1,2-dichlorobenzene µg/kg 0 0 0 - 0- 0 0 0 - 1500 (chlorobenzene) Cyclooctoatomic sulphur µg/kg 0 0 0 - 0- 0 0 0 - NA - Surrogate Atkins SSV 1,2,4-trichlorobenzene µg/kg 0 0 0 - 0- 0 0 0 - 1500 (chlorobenzene) 2-chlorotoluene µg/kg 0 0 0 - 0- 0 0 0 - NA - Surrogate SSV, Vinyl 2,3-dichlorotoluene µg/kg 0 0 0 - 0- 0 0 0 - 0.5 chloride 2-chlorobenzenemethanol µg/kg 0 0 0 - 0- 0 0 0 - - - Surrogate 2006 Atkins 2-chlorobenzalazine µg/kg 0 0 0 - 0- 0 0 0 - 92.8 SSV (benzene) 1,3,5-trimethylbenzene µg/kg 0 0 0 - 0- 0 0 0 - NA -

Validation reports colour devided revised SV, BV, TP worksheet B_HB.xlsx/Summary Sheet 1/22 Revised SV, BV, TP validation samples summary table

% above Number of Minimum Maximum Second highest Average Number of assessment Assessment Source of assessment Determinand Units samples value value value Range concentration exceedances criteria criteria criteria 1,2,4-trimethylbenzene µg/kg 0 0 0 - 0- 0 0 0 - NA - 1,2,3-trimethylbenzene µg/kg 0 0 0 - 0- 0 0 0 - NA - 1-ethyl-2-methylbenzene µg/kg 0 0 0 - 0- 0 0 0 - NA - Total Petroleum Hydrocarbons C5-C12 µg/kg 0 0 0 - 0- 0 0 0 - - - Dibenzofuran µg/kg 0 0 0 - 0- 0 0 0 - NA - Dichlorocresol µg/kg 0 0 0 - 0- 0 0 0 - 2440000 Atkins CNPI Dichlorophenoxybutyric acid µg/kg 0 0 0 - 0- 0 0 0 - NA - methylpropylphenol µg/kg 0 0 0 - 0- 0 0 0 - NA - Ethyltoluene µg/kg 0 0 0 - 0- 0 0 0 - NA - Surrogate Atkins CNPI 2,6-bis(1,1-dimethylethyl- 4-(1-methylpropyl)- Bis(methylpropyl)phenol µg/kg 0 0 0 - 0- 0 0 0 - 238000 phenol Isophorone µg/kg 0 0 0 - 0- 0 0 0 - NA - Dibromochloromethane µg/kg 0 0 0 - 0- 0 0 0 - 65.8 Atkins CNPI Benzyl chloride µg/kg 0 0 0 - 0- 0 0 0 - NA - 3,3,5-trimethylcyclohexanone µg/kg 0 0 0 - 0- 0 0 0 - NA - 2,4,5-trichlorophenol µg/kg 0 0 0 - 0- 0 0 0 - NA - Chloroform µg/kg 0 0 0 - 0- 0 0 0 - NA - 1,2-dibromoethane µg/kg 0 0 0 - 0- 0 0 0 - NA - Ethylbenzene µg/kg 0 0 0 - 0- 0 0 0 - 9000 SGV 1,4-dichloroenzene µg/kg 0 0 0 - 0- 0 0 0 - NA - 1,2,3-trichlorobenzene µg/kg 0 0 0 - 0- 0 0 0 - NA - Surrogate Atkins 2009 ethylmethylphenol µg/kg 0 0 0 - 0- 0 0 0 - 92.8 SSV, benzene 1-ethyl-3-methylbenzene µg/kg 0 0 0 - 0- 0 0 0 - - - Squalene µg/kg 0 0 0 - 0- 0 0 0 - NA - Glycerol tricaprylate µg/kg 0 0 0 - 0- 0 0 0 - NA - Benzo(a)anthracene µg/kg 0 0 0 - 0- 0 0 0 - NA Not volatile Chloromethylphenol µg/kg 0 0 0 - 0- 0 0 0 - 31100 Derived SSV Unidentified aromatic hydrocarbon containing O and CI circa C7 µg/kg 0 0 0 - 0- 0 0 0 - - -

Dodecanoic Acid isooctyl ester µg/kg 0 0 0 - 0- 0 0 0 - NA - Unidentified Aliphatic hydrocarbon circa C30 µg/kg 0 0 0 - 0- 0 0 0 - NA - Sum of Indane, 1-ethyl-3- methylbenzene, 1-ethyl-3- methylbenzene, TPH C8-14, 1- ethyl-3-methylbenzene, 1-ethyl- Surrogoate SSV for 4-methylbenzene µg/kg 419 0 2000 0 0- 2000 5 0 0 16000 TPH aromatic C10-C12

Validation reports colour devided revised SV, BV, TP worksheet B_HB.xlsx/Summary Sheet 2/22 Revised SV, BV, TP validation samples

Number Source of of Number of Assessment assessment Date Report No. BV Ref. Zone Depth Conc. Determinand Units samples exceedances criteria criteria Surrogate Atkins SSV 1,2-Dichlorobenzene µg/kg 395 1 1500 (chlorobenzene) 11/07/2011 242714 H8 WALL 2N 08/07/2011 242852 K11BV 2N 5 30/06/2011 241798 I8 B BV 2N 10 K6 Zone 1 ZN 05/04/2011 232770 BV 1 10 14/05/2010 199157 K8 TBV 2N 10 06/07/2011 242153 L9 SV W 2N 15 03/08/2011 245225 G12 BV 2S 16

06/06/2011 238884 L7 Marl SW 2N 23 13/05/2011 236129 L22 3 3.3m 31 05/07/2010 204070 I8 BV 2N 32 8m from J9 trail sample in top of 13/05/2011 236575 gault 2N gault 34 30/08/2011 248118 G9 BV 1 44

30/06/2011 241798 H9 2N BV 2N 45 13/05/2010 198957 K7 BV2 2N 58 31/08/2011 248120 K5 BV 2N 75 07/07/2011 242275 J11 SV E 2S 77 15/07/2011 243421 I11 SVS 2N 77 30/08/2011 248118 G10 BV 1 78 5m from K9 trial sample in top of 13/05/2011 236575 gault 2N gault 85 15/07/2011 243421 I11 BV 2N 87 31/08/2011 248120 J6 BV 2N 100 4m from L9 trail sample in top of 13/05/2011 236575 gault 2N gault 100 31/08/2011 248120 I6 BV 2N 110

18/03/2011 230930 I6 Zone 2N BV 2N 110

05/04/2011 232770 K6 Zone 1 BV 1 150 13/05/2011 236129 L10 BV 2N 160 11/05/2011 236127 J10 2N 2m 200 24/05/2010 199763 J7 BV 2N 220 03/08/2011 245228 H7 BV 1 370 30/08/2011 248118 H7 BV 2N 370

30/06/2011 241798 H8 2N BV 2N 460 13/05/2010 198957 L7 BV 2N 480 11/05/2011 236127 K10 2N 2m 490 30/08/2011 248118 G8 BV 2N 500 27/04/2011 235158 K10 BV 2N 780 24/05/2010 199763 J8 2N 870 03/08/2011 245228 G8 BV 1 900 11/07/2011 242714 H9 WALL 2N 1000 27/04/2011 235158 J10 BV 2N 1300

06/07/2011 242153 L10 SV W 2N 1500 11/07/2011 242714 H8 WALL 2N 1700 28/07/2010 206893 H10 Trial 2S 2100 27/04/2011 235158 J9 BV 2N 2400 28/07/2010 206893 I10 Trial 2N 5500 0.5m from I9 trial sample in top of 13/05/2011 236575 gault 2N gault 11000 27/04/2011 235158 I9 BV 2N 17000 1,2-Dichloroethane µg/kg 395 46 (395) 3 Atkins SSV 11/05/2011 236127 I9 2N 2m 37000

31/03/2011 232316 K5 SV B (Trial) 1 5 08/07/2011 242852 K11BV 2N 6 09/12/2010 221373 TP F13 2S 2.3 6 14/05/2010 199157 K8 TBV 2N 7 30/08/2011 248118 G9 BV 1 7 14/06/2011 239880 G16 BV 2S 7 20/01/2011 224618 F16 A 2S 1.4 7 27/04/2011 235158 I9 BV 2N 8 01/08/2011 244975 I12 SVE 2S 8

05/04/2011 232770 K6 Zone 1 BV 1 9 27/04/2011 235158 J10 BV 2N 9 07/11/2011 255889 L15 SVW 3 9 01/12/2010 220489 TP D17 2S 3 9

M7 TRENCH 06/12/2011 259497 SVE 2N 9

18/03/2011 230930 I6 Zone 2N BV 2N 10 20/01/2011 224618 F16 B 2S 1.2 11

L7 Sidewall 06/06/2011 237754 Validation 2N 12 28/10/2011 254891 L5 SVN 1 13 01/12/2010 220489 TP D16b 2S 2.5 13

19/09/2011 250156 G9 BV 2S 1 14 26/09/2011 250862 I15 BV 2S 15

19/09/2011 250156 G10 BV 2S 1 16 H14 SV2 06/06/2011 238884 Trench 2S 18

06/07/2011 242153 L10 SV W 2N 21

23/09/2011 250748 F15 TRENCH 2S 22 24/11/2010 219618 N6 2N 4.5 22 23/09/2011 250748 G13 BV 2S 26

31/03/2011 232310 J7 Zone 2N BV 2N 26 02/06/2011 238165 J14 BV 2S 3 27 13/05/2010 198957 L7 BV 2N 28 13/05/2010 198957 K7 BV2 2N 29 14/09/2011 249465 H13 BV 2S 29 28/10/2011 254891 F11 BV 1 31

19/09/2011 250156 G11 BV 2S 1 32

06/06/2011 238884 H14 SV Trench 2S 35 24/05/2010 199763 J7 BV 2N 37 08/11/2010 217789 M8 2N 3.7 37

K13 Trial BV 12/08/2010 208691 Sample 2S 41

01/08/2011 244972 H12 BV U 2S 43 24/05/2010 199763 J8 2N 47 07/07/2011 242275 J11 SV E 2S 48 09/12/2010 221370 TP F11 1 2.8 48 02/11/2011 255404 H18 3.5M 2S 3.5 55 14/09/2011 249465 I13 BV 2S 55 03/08/2011 245228 G8 BV 1 58

26/09/2011 250862 I16 BV (CS) 2S 59 20/01/2011 224432 E13 1 62 29/10/2010 216821 H17 2S 2 62

15/09/2010 211994 H14 Trial BV 2S 65

19/09/2011 250156 G12 BV 2S 2S 73 20/01/2011 224432 F13 1 76 03/08/2011 245228 H7 BV 1 95 14/06/2011 239880 H16 BV 2S 110 02/06/2011 238165 I14 BV 2S 3 110 19/09/2011 250154 G14 BV 2S 120 11/07/2011 242714 H9 WALL 2N 160

06/06/2011 238884 L7 Marl SW 2N 180 11/10/2011 252148 G11 BV 1 180 01/08/2011 244972 H12 SVS 2S 240 28/10/2011 254891 F11 SVE 1 280

01/08/2011 244972 H12 SVW 2S 340 11/07/2011 242714 H8 WALL 2N 420 14/06/2011 239880 H16 SV 2S 430

Validation reports colour devided revised SV, BV, TP worksheet B_HB.xlsx/SV, BV,Surrogate TP summary sheet 3/22 Cis-1,2- Atkins SSV Dichloroethylene µg/kg 395 68 (395) 0.5 (Vinyl Chloride) Revised SV, BV, TP validation samples

Number Source of of Number of Assessment assessment Date Report No. BV Ref. Zone Depth Conc. Determinand Units samples exceedances criteria criteria

30/11/2011 258839 L8 GAULT 3.8M 2N 3.8 640 14/06/2011 239880 H15 BV 2S 710 06/07/2011 242153 L9 SV W 2N 950 Surrogate Cis-1,2- Atkins SSV 30/11/2011 258839 K8 BV 2.4M 2N 2.4 1500 Dichloroethylene µg/kg 395 68 (395) 0.5 (Vinyl Chloride) 03/08/2011 245225 G12 BV 2S 1700

30/11/2011 258839 L8 GAULT 3.8M 2N 3.8 820 13/05/2011 236129 L10 BV 2N 860 28/06/2010 203772 L7 SV B 2N 890 28/07/2010 206893 I10 Trial 2N 990 27/04/2011 235158 J9 BV 2N 990 08/07/2011 242852 K11BV 2N 1000 20/04/2011 234538 L8 TP 2N 0.6 1000

M7 TRENCH 06/12/2011 259497 SVE 2N 1200 11/05/2011 236127 J10 2N 2m 1200 27/04/2011 235158 K10 BV 2N 1500 03/08/2011 245228 G8 BV 1 2100 07/09/2011 249094 F19 4.4M 2S 4.4 2200 28/06/2010 203772 L7 2N 10m 2400 11/07/2011 242714 H8 WALL 2N 2500 01/08/2011 244975 I10 BV 2N 2500 27/04/2011 235158 J10 BV 2N 2600 03/08/2011 245228 H7 BV 1 3000 19/10/2011 253608 E19 BV 2S 3000 28/07/2010 206893 H10 Trial 2S 3900

06/07/2011 242153 L10 SV W 2N 4100 0.5m from I9 trial sample in top of 13/05/2011 236575 gault 2N gault 4600 14/05/2010 199157 K8 SV2 2N 4700

30/06/2011 241798 H8 2N BV 2N 5200 15/07/2011 243421 I11 SVE 2N 6100 07/07/2011 242275 J11 SV E 2S 7600 13/05/2010 198957 L7 BV 2N 8000 8m from J9 trail sample in top of 13/05/2011 236575 gault 2N gault 11000 5m from K9 trial sample in top of 13/05/2011 236575 gault 2N gault 14000 27/04/2011 235158 I9 BV 2N 16000 4m from L9 trail sample in top of 13/05/2011 236575 gault 2N gault 21000 11/05/2011 236127 K10 2N 2m 34000 Tetrachloroethylene µg/kg 392 32 760 Atkins SSV 11/05/2011 236127 I9 2N 2m 91000 4m from L9 trail sample in top of 13/05/2011 236575 gault 2N gault 3200

Toluene µg/kg 395 2 3000 SGV 30/11/2011 258839 L8 GAULT 3.8M 2N 3.8 8880 14/05/2010 199157 K8 SV2 2N 110

18/03/2011 230930 I6 Zone 2N BV 2N 120 19/09/2011 250154 G15 BV 2S 120 19/10/2011 253608 E19 BV 2S 130 28/07/2010 206893 I10 Trial 2N 140

31/03/2011 232310 J7 Zone 2N BV 2N 140

30/11/2011 258839 K8 BV 2.4M 2N 2.4 150

19/09/2011 250156 G12 BV 2S 2S 160 14/09/2011 249465 I13 BV 2S 160 15/08/2011 246538 I12 BV 2S 160 11/07/2011 242714 H9 WALL 2N 170

06/07/2011 242153 L10 SV W 2N 180 03/08/2011 245228 G8 BV 1 190 03/08/2011 245228 H7 BV 1 210

30/11/2011 258839 L8 GAULT 3.8M 2N 3.8 240 11/05/2011 236127 I9 2N 2m 250

19/09/2011 250156 G9 BV 2S 1 280 13/05/2010 198957 L7 BV 2N 330

19/09/2011 250156 G11 BV 2S 1 330 11/07/2011 242714 H8 WALL 2N 470 01/08/2011 244972 H12 SVS 2S 470 14/09/2011 249465 H13 BV 2S 490

01/08/2011 244972 H12 BV U 2S 550 28/10/2011 254891 F11 BV 1 680

01/08/2011 244972 H12 SVW 2S 720 07/07/2011 242275 J11 SV E 2S 750 27/04/2011 235158 I9 BV 2N 760

15/09/2010 211994 H14 Trial BV 2S 1100 03/08/2011 245225 G12 BV 2S 1900 19/09/2011 250154 G14 BV 2S 1900 Trichloroethylene µg/kg 395 31 100 Atkins SSV 03/08/2011 245225 G11 BV 2S 3700

27/04/2011 235158 I9 BV 2N 5 08/07/2011 242852 K11BV 2N 6 14/06/2011 239880 G16 BV 2S 6 16/06/2011 240124 I17 2S 3.4 6 24/05/2010 199763 J7 BV 2N 7 28/10/2011 254891 F11 SVE 1 7 08/11/2010 217789 M8 2N 3.7 7

06/06/2011 238884 L7 Marl SW 2N 7 20/01/2011 224432 F13 1 10 11/07/2011 242714 H9 WALL 2N 11 14/06/2011 239880 H16 SV 2S 22 11/07/2011 242714 H8 WALL 2N 40 Vinyl chloride 07/07/2011 242275 J11 SV E 2S 41 monomer µg/kg 395 395 0.5 Atkins SSV 06/07/2011 242153 L9 SV W 2N 62 27/04/2011 235158 J10 BV 2N 160 1-(2-Chloroethoxy)-2- 27/04/2011 235158 I9 BV 2N 260 (o-Tolyloxy)-ethane µg/kg 3 3 5 Practicable LOD 24/06/2011 240637 J10 SV 2N 400

07/07/2011 242275 J11 SV E 2S 120 07/07/2011 242275 J11 BV 2S 170 19/10/2011 253608 E19 SVN 2S 280 14/09/2011 249465 H13 BV 2S 540 19/10/2011 253608 E19 SVE 2S 780 27/04/2011 235158 J10 BV 2N 880 27/04/2011 235158 I9 BV 2N 2400 15/07/2011 243421 I11 SVS 2N 3000 15/07/2011 243421 I11 SVE 2N 4500 24/06/2011 240637 J10 SV 2N 6800 19/10/2011 253608 E19 BV 2S 11110 Trichloromethylbenzen 15/07/2011 243421 I11 BV 2N 19000 e µg/kg 13 13 5 Practical LOD 07/09/2011 249094 F19 4.4M 2S 4.4 120000 Dichloromethylbenzen Surrogate SSV, e µg/kg 1 1 0.5 Vinyl chloride 07/09/2011 249094 F19 4.4M 2S 4.4 26000 1-Methylnapthalene µg/kg 1 1 92.8 Derived SSV 14/09/2011 249465 I13 BV 2S 280 19/10/2011 253608 E19 SVE 2S 550 24/06/2011 240637 J10 SV 2N 700 24/06/2011 240637 J10 BV 2N 900 Surrogate SSV, 19/10/2011 253608 E19 BV 2S 1070 Dichlorotoluene µg/kg 5 5 0.5 Vinyl chloride 07/09/2011 249094 F19 4.4M 2S 4.4 9600 Surrogate SSV, Trichlorobenzene µg/kg 1 1 1500 Chlorbenzene 07/09/2011 249094 F19 4.4M 2S 4.4 13000

Validation reports colour devided revised SV, BV, TP worksheet B_HB.xlsx/SV, BV, TP summary sheet 4/22 Revised SV, BV, TP validation samples assessment

Phenoxy Acetic Phenoxy Phenoxy acid Acetic Acetic 2-Methyl- 4-Chloro- herbicide: acid acid 2,4,6- 4,6- 2- Bis (2- 1,2- 1,2- Cis-1,2- Electrical Ethofumesa Dichlorpr herbicide: herbicide: Trichlorop dinitrophe methylph chloroethyl) Dichlorob Dichloroet Dichloroethy Report Column Conductivity pH Moisture Dimefox te Hempa Schradan Simazine Dicamba op MCPA Mecoprop henol nol enol ether Phenol enzene hane lene Report Date Number BV Reference Row Column Letters Zone Depth µS/CM % µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg 07/09/2011 249094 F19 4.4M F 19 2S 4.4 2400 9.8 20 <10 <10 <10 <10 <10 20 <10 <10 <10 <100 <100 <100 <100 <100 29 <5 <5 19/10/2011 253608 E19 SVE E 19 2S 2200 8.2 20 <10 <10 190 <10 <10 <10 <10 <10 20 <100 <100 <100 <100 <100 7 <5 <5 24/06/2011 240637 J10 SV J 10 2N 3400 7.5 12 <10 2000 <10 <10 30 20 <10 800 120 300 <100 300 <100 <100 <5 <5 <5 24/06/2011 240637 J10 BV J 10 2N 19/10/2011 253608 E19 BV E 19 2S 2200 8.3 20 <10 <10 590 60 <10 20 <10 10 30 <100 <100 110 <100 <100 670 <10 <10 14/09/2011 249465 I13 BV I 13 2S 2500 8.8 15 <10 1200 <10 <10 40 20 <10 500 <10 390 <100 220 <100 <100 <5 <5 55 07/07/2011 242275 J11 SV E J 11 2S 4200 7.4 21 <10 <10 <10 <10 <10 60 <10 3100 <10 <100 <100 210 110000 <100 <5 77 48 07/07/2011 242275 J11 BV J 11 2S 2300 7.5 21 <10 10 <10 <10 <10 <10 <10 1100 130 <100 <100 <100 530 <100 <5 <5 <5 19/10/2011 253608 E19 SVN E 19 2S 2200 8.4 11 <10 <10 130 <10 <10 <10 <10 <10 20 <100 <100 <100 <100 <100 <5 <5 <5 14/09/2011 249465 H13 BV H 13 2S 2700 8.5 17 <10 50 <10 <10 <10 <10 <10 <10 <10 <100 <100 4000 770 <100 14 <5 29 27/04/2011 235158 J10 BV J 10 2N 3200 8.4 19 <10 280 <10 <10 <10 20 <10 1500 140 <100 <100 820 330 <100 6 1300 9 27/04/2011 235158 I9 BV I 9 2N 3400 8.3 19 <10 170 <10 <10 <10 <10 <10 13000 <10 <100 <100 1300 150000 <100 570 17000 8 15/07/2011 243421 I11 SVS I 11 2N 2000 8.3 18 <10 <10 <10 <10 <10 <10 <10 180 <10 <100 <100 300 10000 <100 16 77 <5 15/07/2011 243421 I11 SVE I 11 2N 2300 8.3 17 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 10000 <100 <5 <5 <5 15/07/2011 243421 I11 BV I 11 2N 2000 8.5 18 <10 290 <10 <10 <10 <10 <10 240 <10 <100 <100 200 48000 <100 11 87 <5 08/07/2011 242852 K11BV K 11 2N 2700 8.3 20 <10 <10 <10 <10 <10 <10 10 1700 240 <100 <100 100 44000 <100 <5 5 6 14/06/2011 239880 G16 BV G 16 2S 2900 8.5 18 <10 <10 <10 <10 <10 <10 <10 <10 260 <100 <100 <100 <100 <100 <5 <5 7 16/06/2011 240124 I17 I 17 2S 3.4 2400 8.2 19 <10 90 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 24/05/2010 199763 J7 BV J 7 2N 2200 8.1 <10 <10 <10 <100 <10 <10 <10 <10 <10 <100 <100 <100 620 <100 <5 220 37 28/10/2011 254891 F11 SVE F 11 1 2100 8.4 19 <10 <10 90 160 <10 <10 <10 10 20 <100 <100 <100 680 <100 10 <5 280 08/11/2010 217789 M8 M 8 2N 3.7 3300 8.1 21 <10 <10 <10 <10 <10 30 50 60 850 <100 <100 <100 39000 <100 <5 <5 37 06/06/2011 238884 L7 Marl SW L 7 2N 3100 8.2 24 <10 20 <10 <10 <10 <10 10 <10 180 <100 <100 <100 5800 <100 <5 23 180 20/01/2011 224432 F13 F 13 1 2100 7.9 18 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 76 11/07/2011 242714 H9 WALL H 9 2N 3600 8.8 18 <10 50 230 110 <10 30 20 2600 60 210 <100 2000 490 <100 25 1000 160 14/06/2011 239880 H16 SV H 16 2S 2800 8.9 20 <10 <10 280 400 <10 <10 <10 <10 100 <100 <100 1000 <100 <100 <5 <5 430 11/07/2011 242714 H8 WALL H 8 2N 3200 8.2 19 <10 30 160 120 <10 <10 <10 <10 <10 <100 <100 2100 2100 <100 5100 1700 420 06/07/2011 242153 L9 SV W L 9 2N 4500 9.1 19 <10 <10 <10 <10 <10 170 50 230 2300 <100 <100 <100 6800 <100 <5 15 950 24/08/2010 209399 J13 TP2 J 13 2S 2.2 2500 8.1 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 200 <100 11 <10 <10 15/09/2010 211994 H14 Trial BV H 14 2S 2200 8.1 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 1200 <100 <100 <10 <10 65 27/09/2011 251190 C16 BV (CS) C 16 1 2400 7.9 9.2 <10 70 <10 <10 <10 <10 <10 <10 <10 <100 <100 100 <100 <100 <10 <10 <10 06/12/2011 259469 M8 BV M 8 2N 4900 8.9 18 <10 <10 <10 <10 <10 170 110 960 3800 <100 <100 27000 22000 400 <25 <25 <25 01/08/2011 244972 H12 BV L H 12 2S 2400 8 19 <100 <100 <100 100 <100 <10 950 <10 <10 20 <10 <10 <10 <10 <25 <25 <25 11/05/2011 236127 K10 K 10 2N 2m 2300 8.8 20 <100 27000 <100 <100 <100 <100 100 600 <100 <1000 <1000 <1000 550000 <1000 79 490 <25 08/09/2011 248818 K5 BV 2.8M K 5 1 2.8 2500 8.3 26 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 1600 2600 <100 <25 <25 <25 20/01/2011 224432 E13 E 13 1 2100 7.8 22 <10 20 <10 <10 <10 <10 <10 <10 <10 <100 <100 530 <100 <100 <25 <25 62 24/05/2010 199763 J8 J 8 2N 2100 8.6 <10 330 <10 <100 <10 <10 <10 <10 <10 220 <100 <100 <100 <100 28 870 47 19/09/2011 250154 G15 BV G 15 2S 2600 8.3 20 <10 50 10 <10 10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <25 <25 <25 28/07/2010 206893 I10 Trial I 10 2N 5400 8.1 <10 20 <10 <10 <10 160 70 16000 70 <100 <100 360 40000 <100 <25 5500 <25 11/05/2011 236127 I9 I 9 2N 2m 2200 8.7 19 <100 5100 <100 <100 <100 <100 <100 1100 <100 <1000 <1000 11000 1100000 <1000 1300 37000 <25 13/05/2010 198957 L7 BV L 7 2N 2600 8.3 <10 <10 <10 <10 <10 <10 20 3100 100 <100 <100 5100 14000 <100 <25 480 28 01/08/2011 244972 H12 BV U H 12 2S 2000 8 21 <100 <100 <100 300 <100 <10 <10 30 <10 <10 <10 <10 <10 <10 <25 <25 43 19/09/2011 250154 G14 BV G 14 2S 2500 8.2 20 <10 <10 <10 <10 <10 <10 <10 150 <10 <100 <100 100 <100 220 <25 <25 120 03/08/2011 245225 G11 BV G 11 2S 2200 8.4 23 <10 20 2000 2500 <10 <10 20 50 90 <100 <100 3900 300 <100 150 <25 <25 01/08/2011 244975 I10 BV I 10 2N 2300 8.3 18 <10 120 <10 <10 20 <10 <10 <10 <10 <100 <100 <100 <100 <100 <25 <25 <25 08/09/2011 248818 L5 BV 2.8M L 5 1 2.8 2500 8.3 25 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 200 500 <100 <25 <25 <25 30/08/2011 248118 G8 BV G 8 2N 2500 8.3 16 <10 <10 200 30 <10 <10 <10 <10 20 <100 <100 100 3300 <100 <25 500 <25 30/08/2011 248118 H7 BV H 7 2N 2800 8.4 14 <10 <10 40 <10 <10 <10 <10 <10 20 <100 <100 3100 6200 <100 <25 370 <25 13/05/2010 198957 K7 BV2 K 7 2N 2300 8.4 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 3600 2600 <100 <25 58 29 06/12/2011 259541 L6 3.0 L 6 2N 3 2600 8.5 26 <10 <10 <10 <10 <10 10 30 10 130 <100 <100 200 2900 <100 <25 <25 <25 01/08/2011 244972 H12 SVE H 12 2S 2600 7.9 15 <100 <100 <100 <100 <100 <10 170 40 <20 40 <10 <10 <10 <10 <25 <25 <25 01/08/2011 244975 H10 BV H 10 2S 2400 8.9 20 <10 70 50 <10 20 <10 <10 160 10 <100 <100 200 400 <100 <25 <25 <25 01/08/2011 244975 H11 BV H 11 2S 2300 7.7 16 <10 70 10 <10 <10 <10 <10 <10 <10 <100 <100 <100 100 <100 <25 <25 <25 31/08/2011 248299 B22 6.0M B 22 1 6 2200 9 20 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <25 <25 <25 20/01/2011 224432 E12 E 12 1 2000 8.2 17 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <25 <25 <25 06/12/2011 259478 L5 ZONE 2 4.0M L 5 2N 4 2800 8.1 21 <10 <10 <10 <10 <10 <10 <10 <10 30 <100 <100 440 2600 <100 <25 <25 <25 30/11/2011 258839 L8 SVW 2.2M L 8 2N 2.2 3000 7.8 21 <10 <10 <10 <10 <10 <10 10 170 150 <100 <100 <100 8800 <100 <25 <25 <25 06/12/2011 259497 M7 TRENCH BV M 7 2N 2900 8 27 <10 <10 <10 <10 <10 <10 10 10 30 <100 <100 660 5100 140 <25 <25 <25 06/12/2011 259469 M8 SV W M 8 2N 3300 9.2 17 <10 <10 <10 <10 <10 30 20 110 510 <100 <100 3400 3800 <100 <25 <25 <25 06/12/2011 259469 M9 BV M 9 2N 3200 8.1 18 <10 <10 <10 10 <10 <10 <10 <10 110 <100 <100 1900 11000 <100 <25 <25 <25 06/12/2011 259469 M9 SV W M 9 2N 3000 8.7 17 <10 <10 <10 <10 <10 <10 <10 <10 80 <100 <100 <100 5600 <100 <25 <25 <25 08/09/2010 211302 I15 Trial BV I 15 2S 2200 8.1 <10 <10 <10 <10 <10 <10 <10 70 80 <100 <100 <100 <100 <100 <5 <5 <5 12/08/2010 208691 J13 Trial BV Sample J 13 2S 4200 8.3 <10 <10 <10 <10 <10 <10 170 <10 0.1 <100 <100 20000 11000 <100 <5 <5 <5 07/07/2011 242275 K12 K 12 2S 5200 7.8 20 <10 <10 <10 <10 <10 70 <10 46000 120 <100 <100 25000 15000 260 <5 <5 <5 18/04/2011 233858 K8 Zone 2N BV K 8 2N 3200 8 24 <10 <10 <10 <10 <10 <10 <10 <10 80 <100 <100 <100 100 <100 7 <5 <5 14/06/2011 239880 H16 BV H 16 2S 2800 8.7 19 <10 <10 420 910 <10 <10 <10 <10 170 <100 <100 2100 <100 <100 <5 <5 110 15/07/2011 243421 I12 SVS I 12 2S 250 8.4 19 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 03/08/2011 245225 G11 SVE G 11 2S 2000 8.5 20 <10 90 20 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 31/08/2011 248300 E17 5M E 17 2S 5 2200 8.6 21 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 01/12/2010 220489 TP D16a D 16 a 2S 2.5 2500 8.5 22 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 07/07/2011 242275 J12 BV J 12 2S 4700 7.5 20 <10 <10 <10 <10 <10 40 <10 <10 <10 <100 <100 <100 200 <100 <5 <5 <5 21/07/2010 206314 L8 BV L 8 2N 2300 8.2 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 30/08/2011 248118 G10 BV G 10 1 2400 8.1 16 <10 <10 20 <10 <10 <10 <10 <10 10 <100 <100 100 1100 <100 <5 78 <5 03/08/2011 245225 G12 SVE G 12 2S 2100 8.7 22 <10 130 <10 <10 <10 <10 <10 10 <10 <100 <100 100 <100 <100 <5 <5 <5 01/08/2011 244975 I11 BV I 11 2S 2000 7.6 17 <10 30 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 23/09/2011 250748 F15 TRENCH F 15 2S 2400 11.1 30 <10 30 <10 <10 <10 <10 <10 12 160 <100 <100 1600 <100 <100 <5 <5 22 30/09/2011 251696 E14 BV E 14 1 2500 7.8 23 <10 <10 200 <10 <10 <10 <10 10 <10 <100 <100 <100 <100 <100 <5 <5 <5 14/05/2010 199157 K7 TBV K 7 2N 2100 8.4 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 07/11/2011 255889 L15 SVW L 15 3 2300 8 21 <10 <10 <10 <10 <10 <10 <10 180 30 <100 <100 <100 910 <100 <5 <5 9 02/11/2011 255401 G19 2.5M (CS) G 19 2S 2.5 <10 8.1 18 <10 <10 <10 <10 <10 <10 <10 <10 120 <100 <100 <100 <100 <100 <5 <5 <5 12/01/2011 223851 E14 A E 14 a 1 2.4 2100 8.6 15 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 25/10/2011 254335 F17 3.9M F 17 2S 3.9 2100 8.2 19 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 15/07/2011 243421 I10 SVE I 10 2N 2700 8.1 16 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 100 <100 <5 <5 <5 13/06/2011 239401 K15 Pile Base K 15 2S 2500 10.1 22 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 600 <100 <5 <5 <5 01/12/2010 220493 TP E16a E 16 a 2S 2.5 2300 8.1 26 <10 <10 10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 5m from top of 13/05/2011 236575 K9 trial sample in gault K 9 2N gault 2100 8.3 20 <10 1500 <10 <10 <10 <10 <10 920 <10 600 <100 400 230000 <100 <5 85 <5 30/09/2011 251696 C15 BV C 15 1 2500 7.9 22 <10 <10 2400 240 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 30/06/2011 241798 I8 B BV I 8 2N 4300 8.1 <10 150 <10 <10 10 10 <10 <10 <10 <100 <100 <100 <100 <100 <5 10 <5 23/09/2011 250748 F15 BV F 15 2S 2500 9.6 25 <10 30 <10 <10 <10 <10 <10 56 40 <100 <100 2400 <100 <100 <5 <5 <5 28/10/2011 254891 L5 BV L 5 1 2100 8.3 20 <10 <10 <10 <10 <10 <10 <10 20 10 <100 <100 <100 <100 <100 <5 <5 <5 30/08/2011 248118 G9 BV G 9 1 2800 8.2 15 <10 <10 <10 <10 <10 <10 <10 <10 10 <100 <100 500 1300 <100 <5 44 7 12/04/2010 195725 K16 K 16 3 2.9 2300 8.4 <10 120 <10 <10 <10 <50 <50 <50 <50 <100 <100 <100 2100 <100 <5 <5 <5 14/05/2010 199157 K7 SV1 K 7 2N 2600 8.3 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 5500 <100 <5 <5 <5 8m from top of 13/05/2011 236575 J9 trail sample in gault J 9 2N gault 2100 8.8 20 <10 230 <10 <10 <10 <10 <10 470 <10 400 <100 100 180000 <100 6 34 <5 02/06/2011 238165 I14 BV I 14 2S 3 2400 7.6 21 <10 <10 <10 <10 <10 <10 30 <10 610 <100 <100 <100 <100 <100 <5 <5 110 08/11/2010 217800 M9 M 9 2N 3.4 2800 8.1 23 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 1700 3900 <100 <5 <5 <5 14/05/2010 199157 K7 SV2 K 7 2N 2300 8.1 <10 30 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 140 <100 <5 <5 <5 05/07/2010 204070 I8 BV I 8 2N 2100 8.3 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 32 <5 12/08/2010 208691 K13 Trial BV Sample K 13 2S 3100 8.7 <10 <10 <10 <10 <10 <10 40 <10 <0.01 490 <100 9200 1400 <100 <5 <5 41 07/10/2011 252135 F16 2.65M F 16 2S 2.65 2200 8.8 24 <10 20 <10 <10 <10 <10 <10 40 50 <100 <100 <100 <100 <100 <5 <5 <5 28/10/2011 254855 G17 3.1M (CS) G 17 2S 3.1 2300 8.3 24 <10 70 <10 <10 <10 <10 <10 <10 20 <100 <100 <100 <100 <100 <5 <5 <5 01/12/2010 220493 TP E17 E 17 2S 2 2400 8 25 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 02/11/2011 255404 H18 3.5M H 18 2S 3.5 <10 8.4 23 <10 <10 <10 <10 <10 30 20 20 130 <100 <100 <100 <100 <100 <5 <5 55 01/08/2011 244975 I12 SVE I 12 2S 2500 7.7 14 <10 170 80 <10 40 <10 <10 <10 <10 <100 <100 <100 <100 <100 10 <5 8 06/12/2011 259497 M7 TRENCH SVE M 7 2N 3100 8.3 16 <10 3500 30 <10 50 10 10 40 60 2000 <100 520 110 <100 98 <5 9 26/09/2011 250862 I16 BV (CS) I 16 2S 2300 8.2 18 <10 <10 <10 <10 <10 <10 46 <10 1200 <100 <100 140 <100 <100 <5 <5 59 15/07/2011 243421 I12 SVE I 12 2S 2100 8.4 19 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 400 8600 <100 <5 <5 <5 01/11/2011 255202 K17 2.5M K 17 3 2.5 2200 8.3 16 <10 <10 <10 <10 <10 <10 <10 <10 10 <100 <100 <100 <100 <100 <5 <5 <5 24/08/2010 209399 J12 TP1 J 12 2S 1.8 3000 8.1 <10 <10 30 <10 <10 40 110 6800 600 <100 <100 7000 2000 <100 <5 <5 <5 18/04/2011 233858 J7 Zone 2N BV J 7 2N 2600 8.1 23 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 28/06/2010 203772 L7 SV B L 7 2N 2100 8.6 <10 <10 <10 <100 <10 <100 <100 600 <100 <100 <100 <100 <100 <100 <5 <5 <5 27/04/2011 234979 J8 2 BV J 8 2N 2600 8.2 20 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 12/01/2011 223851 D15 A D 15 A 1 2.45 1900 8.5 20 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 20/04/2011 234538 L8 TP L 8 2N 0.6 2800 8 22 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 1800 <100 <5 <5 <5 30/06/2011 241798 H8 2N BV H 8 2N 3800 8 <10 200 <10 <10 60 20 <10 480 50 100 <100 190 6900 <100 16 460 <5 27/09/2011 251180 E15 BV E 15 1 2100 8.8 14 <10 40 <10 <10 10 40 <10 70 30 140 <100 <100 <100 <100 8 <5 <5 19/09/2011 250154 G14 SV E 2 G 14 2S 2200 8.4 16 <10 30 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 19/09/2011 250154 G14 SV E 1 G 14 2S 2200 8.6 18 <10 50 <10 <10 40 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 27/04/2011 234979 K8 2 BV K 8 2N 2900 8.2 19 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 13/05/2011 236129 L10 BV L 10 2N 2300 8.6 22 <10 <10 <10 <10 <10 <10 20 200 440 <100 <100 <100 <100 <100 <5 160 <5 30/06/2011 241798 H9 2N BV H 9 2N 3600 8.2 <10 <10 30 <10 <10 10 <10 1500 <10 <100 <100 150 <100 <100 <5 45 <5 06/06/2011 238884 H14 SV Trench H 14 2S 2600 7.7 19 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 35 14/06/2011 239880 H15 BV H 15 2S 2500 8.3 14 <10 <10 1600 1300 <10 <10 <10 40 50 <100 <100 4000 <100 <100 <5 <5 710 0.5m from top 13/05/2011 236575 I9 trial sample in gault I 9 2N of gault 4600 8.3 24 <10 <10 <10 <10 <10 180 30 21000 100 <100 <100 600 32000 <100 12 11000 <5 10/11/2011 256349 C17 SVN C 17 1 2200 8.1 11 <10 140 20 <10 20 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 02/11/2011 255401 G18 3.5M G 18 2S 3.5 <10 8.3 18 <10 <10 <10 <10 <10 <10 <10 <10 10 <100 <100 <100 <100 <100 <5 <5 <5 01/12/2010 220489 TP D17 D 17 2S 3 2500 8.7 22 <10 <10 120 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 9 29/10/2010 216821 H17 H 17 2S 2 2400 8.9 4.9 <10 <10 <10 <10 <10 <10 <10 <10 70 <100 <100 <100 <100 <100 <5 <5 62 11/10/2011 252148 G11 BV G 11 1 2300 9 22 <10 <10 330 10 <10 <10 30 <10 100 <100 <100 <100 <100 <100 <5 <5 180 19/09/2011 250160 D24 5.5M D 24 3 5.5 2100 8.2 14 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 19/09/2011 250154 G15 SV E G 15 2S 2600 8.2 16 <10 1300 80 80 1600 20 <10 130 100 410 <100 150 170 <100 <5 <5 <5 27/04/2011 235158 K10 BV K 10 2N 2700 9.4 21 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 770 <100 <5 780 <5 4m from top of 13/05/2011 236575 L9 trail sample in gault L 9 2N gault 2000 8.3 21 <10 <10 <10 <10 <10 <10 <10 150 <10 <100 <100 <100 800 <100 7 100 <5 27/04/2011 234979 K7 FACE VALIDATION K 7 2N 3400 8.6 20 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 420 <100 <5 <5 <5 28/10/2011 254891 L5 SVN L 5 1 2100 11.7 84 <10 <10 90 60 <10 30 10 20 50 <100 <100 <100 160 <100 <5 <5 13 19/09/2011 250160 D23 5.5M D 23 3 5.5 2200 8.1 13 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 14/05/2010 199157 K8 TBV K 8 2N 2200 8.5 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 380 <100 <5 10 7 27/04/2011 235158 J9 BV J 9 2N 3200 8.5 18 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 1800 <100 <5 2400 <5 19/09/2011 250160 E24 5.5M E 24 3 5.5 2300 7.9 13 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 06/06/2011 238884 H14 SV2 Trench H 14 2S 2700 7.8 19 <10 <10 <10 <10 <10 <10 <10 50 <10 <100 <100 <100 <100 <100 <5 <5 18 15/09/2010 211994 H14 H 14 2S 0.5 2300 8.1 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 28/06/2010 203772 L7 L 7 2N 10m 2300 8.9 <10 <10 <10 <100 <10 <100 <100 <100 <100 <100 <100 <100 <100 <100 <5 <5 <5 11/05/2011 236127 J10 J 10 2N 2m 2200 7.9 21 <100 27000 <100 <100 <100 <100 200 <100 200 <1000 <1000 <1000 4000 <1000 <5 200 <5 19/09/2011 250156 G10 BV 2S G 10 1 2600 7.9 18 <10 <10 460 10 <10 <10 <10 900 <10 <100 <100 320 270 <100 31 <5 16 18/03/2011 230930 I6 Zone 2N BV I 6 2N 2500 8.4 18 <10 <10 <10 <10 <10 20 20 30 50 <100 <100 <100 260 <100 <5 110 10 31/03/2011 232310 J7 Zone 2N BV J 7 2N 1900 8.2 22 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 26 19/09/2011 250156 G12 BV 2S G 12 2S 2400 8 19 <10 <10 40 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 73 06/07/2011 242153 L10 SV W L 10 2N 4100 7.5 23 <10 50 <10 <10 <10 <10 <10 430 50 <100 <100 2100 15000 <100 8 1500 21 03/08/2011 245228 G8 BV G 8 1 3100 8.3 21 <10 70 80 10 <10 10 <10 1200 30 600 <100 6600 700 <100 7 900 58 03/08/2011 245228 H7 BV H 7 1 3100 8 22 <10 <10 110 70 <10 <10 10 200 30 <100 <100 12000 2400 <100 <5 370 95 19/09/2011 250156 G9 BV 2S G 9 1 2600 7.7 18 <10 <10 10 <10 <10 <10 <10 <10 <10 <100 <100 <100 590 <100 <5 <5 14 19/09/2011 250156 G11 BV 2S G 11 1 2900 7.9 17 <10 <10 180 <10 <10 12 <10 1100 <10 <100 <100 <100 <100 <100 9 <5 32 28/10/2011 254891 F11 BV F 11 1 2400 8.3 19 <10 <10 1100 230 <10 10 <10 70 <10 <100 <100 2200 6800 <100 45 <5 31 03/08/2011 245225 G12 BV G 12 2S 2600 8.2 22 <10 <10 410 80 <10 <10 20 <10 170 <100 <100 5000 900 <100 <5 16 1700 16/07/2010 205918 L11 BV L 11 2N 2200 8 <10 <10 <10 <10 <10 <10 <10 10 30 <100 <100 <0.1 <100 <100 <5 <5 <5 08/07/2011 242852 J13 SV E J 13 2S 3800 8 20 <10 <10 <10 <10 <10 20 <10 <10 <10 <100 <100 <100 2200 <100 <5 <5 <5 13/06/2011 239401 K14 Pile Base K 14 2S 2400 9.7 23 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 08/07/2011 242852 K12 SV SW K 12 2S 3000 8.3 21 <10 <10 <10 <10 <10 <10 <10 390 40 <100 <100 <100 200 <100 <5 <5 <5 18/04/2011 233858 K7 Zone 2N BV K 7 2N 2700 8.2 26 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 09/12/2010 221370 TP F11 F 11 1 2.8 2300 9 25 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 520 <100 <100 <5 <5 48 11/10/2011 252148 E13 SVE E 13 1 2100 7.8 16 <10 <10 <10 <10 <10 <10 <10 <10 20 <100 <100 1000 <100 <100 <5 <5 <5 03/08/2011 245225 G13 SVE G 13 2S 2200 9.6 18 <10 50 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 26/08/2010 210115 J14 Trial BV J 14 2S 2300 7.1 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 160 <100 <5 <5 <5 18/04/2011 233858 J7 Drainage Trench SV J 7 2N 2700 8.5 22 <10 <10 <10 <10 <10 <10 <10 <10 40 <100 <100 <100 <100 <100 <5 <5 <5 18/04/2011 233858 J8 Zone 2N BV J 8 2N 2800 8.2 22 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 06/06/2011 237754 L8 Sidewall Validation L 8 2N 2300 7.9 <10 <10 <10 <10 <10 <10 <10 60 20 <100 <100 <100 <100 <100 <5 <5 <5 26/09/2011 250862 I15 BV I 15 2S 2200 8.3 19 <10 <10 <10 <10 <10 <10 44 <10 1300 <100 <100 110 <100 <100 26 <5 15 06/06/2011 237754 L7 Sidewall Validation L 7 2N 3400 8 <10 <10 <10 <10 <10 <10 <10 10 570 <100 <100 <100 2400 <100 <5 <5 12 08/07/2011 242852 J13 BV J 13 2S 2800 8.2 19 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 29/06/2011 241566 L10B BV L 10 2N 4300 7.5 23 <10 230 <10 <10 <10 10 <10 100 110 <100 <100 450 5200 <100 <5 <5 <5 06/06/2011 238884 L6 Marl SW L 6 2N 2900 7.8 23 <10 30 <10 <10 10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 23/09/2011 250748 G13 BV G 13 2S 2800 9.8 23 <10 <10 <10 <10 <10 <10 <10 <10 30 <100 <100 100 <100 <100 <5 <5 26 14/04/2010 195983 BV J16 J 16 2S 3100 8.7 <100000 <100000 <100000 <100000 150 20 <10 <10 910 <100 <100 2600 2900 <100 <5 <5 <5 18/04/2011 233858 J7 Drainage Trench BV2 J 7 2N 2700 8.6 23 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 12/04/2010 195725 K15 K 15 2S 2.7 2500 9 <10 <10 <10 <10 <10 <50 <50 <50 110 <100 <100 <100 2000 <100 <5 <5 <5 14/07/2010 205640 L10 Trial L 10 2N 2600 7.7 <10 <10 <10 <10 <10 <10 <10 100 <10 <100 <100 <100 <100 <100 <5 <5 <5 07/11/2011 255890 M5 WELL BASE M 5 2N 2100 7.9 20 <10 <10 <10 <10 <10 20 30 2300 50 <100 <100 <100 <100 <100 <5 <5 <5 01/12/2010 220493 TP E16b E 16 b 2S 2.5 2500 8.4 23 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 06/06/2011 238884 L8 Marl SW L 8 2N 2900 8.1 24 <10 <10 <10 <10 <10 30 50 950 1500 <100 <100 <100 <100 <100 <5 <5 <5 28/06/2010 203772 L7 BV A L 7 2N 2100 8.9 <10 <10 <10 <100 <10 <100 <100 400 <100 <100 <100 <100 <100 <100 <5 <5 <5 28/06/2010 203772 L7 SV C L 7 2N 2200 8.8 <10 <10 <10 <100 <10 <100 <100 <100 <100 <100 <100 <100 <100 <100 <5 <5 <5

Validation reports colour devided revised SV, BV, TP worksheet B_HB.xlsx/Revised SV, BV, TP validations 5/22 Phenoxy Acetic Phenoxy Phenoxy acid Acetic Acetic 2-Methyl- 4-Chloro- herbicide: acid acid 2,4,6- 4,6- 2- Bis (2- 1,2- 1,2- Cis-1,2- Electrical Ethofumesa Dichlorpr herbicide: herbicide: Trichlorop dinitrophe methylph chloroethyl) Dichlorob Dichloroet Dichloroethy Report Column Conductivity pH Moisture Dimefox te Hempa Schradan Simazine Dicamba op MCPA Mecoprop henol nol enol ether Phenol enzene hane lene Report Date Number BV Reference Row Column Letters Zone Depth µS/CM % µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg 19/08/2011 246822 B20 1.6M B 20 2S 1.6 2000 8.5 17 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 18/04/2011 233858 I8 Zone 2N BV I 8 2N 2700 8.1 22 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 08/11/2011 256023 K15 BV K 15 2S 2400 8.9 23 <10 <10 <10 <10 <10 <10 <10 30 70 <100 <100 <100 <100 <100 <5 <5 <5 24/11/2010 219458 L4 L 4 1 4.5 2300 8.4 20 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 08/11/2010 217793 M6 M 6 2N 3.7 2700 8.6 20 <10 80 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 300 <100 <5 <5 <5 14/05/2010 199157 K8 SV1 K 8 2N 2500 8.3 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 1300 <100 <5 <5 <5 28/06/2010 203772 K7 BV A K 7 2N 2100 8.7 <10 <10 <10 <100 <10 <100 <100 700 200 <100 <100 <100 <100 <100 <5 <5 <5 28/06/2010 203772 K8 VS K 8 2N 2100 8.4 <10 <10 <10 <100 <10 <100 <100 1900 600 <100 <100 <100 <1000 <1000 <5 <5 <5 28/06/2010 203772 L7 SV A L 7 2N 2200 8.6 <10 <10 <10 <100 <10 <100 <100 100 <100 <100 <100 <100 <100 <100 <5 <5 <5 28/06/2010 203772 K7 SV A K 7 2N 2100 8.5 <10 <10 <10 <100 <10 <100 <100 200 <100 <100 <100 <100 <1000 <1000 <5 <5 <5 28/06/2010 203772 L7 SV D L 7 2N 2300 8.6 <10 170 <10 <100 <10 <100 <100 <100 <100 <100 <100 <100 <100 <100 <5 <5 <5 19/08/2011 246822 C19 2.0M C 19 2S 2 2100 8.3 19 <10 <10 20 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 26/08/2010 210115 TP J14 J 14 2S 1 2200 7.3 <10 <10 <10 <10 <10 <10 <10 280 <10 <100 <100 <100 <100 <100 <5 <5 <5 13/05/2011 236129 L22 L 22 3 3.3m 2100 8.2 20 <10 <10 <10 <10 <10 <10 <10 20 20 <100 <100 <100 <100 <100 <5 31 <5 31/03/2011 232316 K5 SV A (Trial) K 5 1 2300 8.2 18 <10 90 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <5 <5 <5 23/11/2010 219461 L6 L 6 2N 4.5 2200 7.6 22 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 23/11/2010 219461 M10 M 10 2N 3.5 2100 7.9 24 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 28/06/2010 203772 K7 SV B K 7 2N 2100 8.1 <10 <10 <10 <100 <10 <100 <100 <100 <100 <100 <100 <100 <1000 <1000 <5 <5 <5 05/04/2011 232770 K6 Zone 1 BV K 6 1 2500 7.6 21 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 150 9 23/11/2010 219456 N3 N 3 1 4.5 2200 8.1 18 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 240 <100 <5 <5 <5 20/05/2011 237208 L8 trial sample in gault L 8 2N 7.5 2100 8.4 24 <10 <10 <10 <50 <10 <200 <200 <200 <200 <100 <100 <100 <100 <100 <5 <5 <5 23/11/2010 219461 M11 M 11 2N 4.5 2200 8.2 24 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 06/12/2011 259497 M7 TRENCH SVW M 7 2N 2600 8.1 26 <10 10 <10 <10 <10 <10 <10 10 100 <100 <100 <100 1000 <100 <5 <5 <5 07/11/2011 255889 L14 SVW L 14 2S 2300 8 21 <10 <10 <10 <10 <10 <10 <10 140 10 <100 <100 <100 280 <100 <5 <5 <5 14/07/2010 205640 J8 BV J 8 2N 2200 8 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 24/11/2010 219618 N4 N 4 1 4.5 2300 8.7 19 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 31/08/2011 248120 K5 BV K 5 2N 2900 8.7 24 <10 20 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 75 <5 24/11/2010 219618 N6 N 6 2N 4.5 2300 8.7 27 <10 <10 <10 <10 <10 <10 <10 <10 30 <100 <100 <100 1000 <100 <5 <5 22 24/11/2010 219618 N5 N 5 2N 4.5 2200 8.8 22 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 190 <100 <5 <5 <5 24/11/2010 219618 N7 N 7 2N 4.5 2200 8.7 8.6 <10 10 40 <10 <10 <10 10 <10 10 <100 <100 <100 <100 <100 <5 <5 <5 09/02/2011 226719 H6 CS H 6 1 2500 9.1 18 <10 120 40 210 <10 <10 <10 <10 <10 <100 <100 <100 340 <100 55 <5 <5 24/11/2010 219618 M7 M 7 2N 4.5 2300 8.3 24 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 450 <100 <5 <5 <5 31/08/2011 248120 J6 BV J 6 2N 2600 8.5 16 <10 20 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 100 <5 31/08/2011 248120 I6 BV I 6 2N 2800 8.4 16 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 500 <100 <5 110 <5 24/11/2010 219619 TPK6 K 6 1 4.57 2300 8.1 22 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 18/11/2010 218834 TPI6 I 6 1 4.7 2200 8.2 24 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 20/05/2011 237208 L7 trial sample in marl L 7 2N 7.5 2100 8.5 24 <10 <10 <10 <50 <10 <100 <100 <100 <100 <100 <100 <100 <100 <100 <5 <5 <5 20/05/2011 237414 L7 BV 226 576 L 7 2N 4.5 2000 8.2 14 <10 <10 <10 <10 <10 <50 <50 <50 <50 <100 <100 <100 <100 <100 <5 <5 <5 07/11/2011 255889 L15 2M L 15 3 2 2000 8.2 20 <10 <10 <10 <10 <10 <10 <10 680 30 <100 <100 <100 <100 <100 13 <5 <5 10/11/2011 256346 A18 SVS A 18 1 2200 8.2 8 <10 90 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 10/11/2011 256349 C17 SVSW C 17 1 2100 7.9 9.9 <10 20 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 11/10/2011 252148 F12 SVE F 12 1 2100 8.7 20 <10 100 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 24/08/2010 209399 J13 TP1 J 13 2S 0.5 2500 8.1 <10 <10 <10 <10 <10 <10 <10 <10 30 <100 <100 <100 <100 <100 <5 <5 <5 01/11/2011 255206 K20 1.5M K 20 3 1.5 2200 9.8 6.1 <10 110 <10 <10 <10 <10 <10 10 20 <100 <100 <100 <100 <100 <5 <5 <5 06/12/2011 259541 M8,L8,L7 0.5 L/M 7/8 2N 0.5 2500 8.1 7.6 <10 20 <10 <10 <10 <10 <10 <10 <10 <100 <100 110 600 <100 <5 <5 <5 24/06/2011 240637 K11 SV K 11 2N 2400 7.9 10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 01/11/2011 255206 K19 2.5M K 19 3 2.5 2200 8.3 19 <10 <10 <10 <10 <10 10 <10 <10 10 <100 <100 <100 <100 <100 <5 <5 <5 25/10/2011 254129 H20 2.1M H 20 2S 2.1 1900 8.2 13 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 28/10/2011 254858 I19 1.1M (CS) I 19 3 1.1 2100 8.4 19 <10 <10 <10 <10 <10 <10 <10 20 10 <100 <100 <100 <100 <100 <5 <5 <5 02/11/2011 255406 J20 4.0M (CS) J 20 3 4 <10 8.2 21 <10 <10 <10 <10 <10 20 40 1900 110 <100 <100 <100 <100 <100 <5 <5 <5 10/11/2011 256349 B17 SVN B 17 1 2200 7.8 11 <10 50 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 02/06/2011 238165 L9 BV L 9 2N 4 2400 7.6 20 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 11/10/2011 252148 F12 BV F 12 1 2200 8.2 23 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 20/05/2011 237414 K6 BV Drain Box K 6 1 3 2600 7.8 16 <10 1100 <10 <10 1,700 <50 <50 <50 <50 <100 <100 <100 2500 <100 <5 <5 <5 07/07/2011 242275 J12 SV S J 12 2S 5000 7.6 17 <10 <10 <10 <10 <10 240 <10 <10 20 <100 <100 100 6300 <100 <5 <5 <5 02/06/2011 238165 J14 BV J 14 2S 3 2400 7.6 23 <10 <10 <10 <10 <10 10 <10 <10 250 <100 <100 <100 <100 <100 <5 <5 27 12/09/2011 249095 E18 4.4M F 18 2S 4.4 2200 20 20 <10 <10 70 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 20/05/2011 237414 L8 BV 225 558 L 8 2N 4.5 2000 8.3 15 <10 <10 <10 <10 <10 <50 60 250 <50 <100 <100 <100 <100 <100 <5 <5 <5 19/10/2011 253608 E19 SVS E 19 2S 2400 8.4 15 <10 <10 610 1900 <10 20 <10 <10 10 <100 <100 <100 <100 <100 <5 <5 <5 02/06/2011 238165 L8 BV L 8 2N 4 2400 7.5 22 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 11/10/2011 252148 F12 SVW F 12 1 3300 7.7 20 <10 20 <10 <10 <10 <10 10 20 30 <100 <100 10000 2000 <100 <5 <5 <5 08/07/2011 242852 K12 BV K 12 2S 8200 8.1 18 <10 <10 <10 <10 <10 <10 <10 33000 70 <100 <100 5400 48000 <100 <5 <5 <5 07/07/2011 242275 J12 SV E J 12 2S 3700 7.5 20 <10 1800 2,000 5700 210 50 <10 <10 <10 <100 <100 <100 1600 <100 <5 <5 <5 02/11/2011 255404 H19 3.5M H 19 2S 3.5 <10 8.2 20 <10 <10 <10 <10 <10 <10 <10 <10 10 <100 <100 <100 <100 <100 <5 <5 <5 19/08/2011 246823 D18 2.5M D 18 2S 2.5 1700 8.3 17 <10 30 80 10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 07/07/2011 242275 J12 SV W J 12 2S 7600 7.7 21 <10 24000 <10 <10 3300 170 <10 73000 150 <100 <100 1400 27000 280 <5 <5 <5 24/06/2011 240637 K9 BV K 9 2N 3100 7.4 13 <10 70 <10 <10 30 <10 <10 80 30 <100 <100 <100 <100 <100 21 <5 <5 31/08/2011 248299 B20 5.5M B 20 1 5.5 2100 9.1 21 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 01/11/2011 255202 K18 2.0M K 18 3 2 2200 8.1 19 <10 <10 <10 <10 <10 <10 <10 <10 10 <100 <100 <100 <100 <100 <5 <5 <5 08/07/2011 242852 J13 SV S J 13 2S 5000 7.8 20 <10 <10 <10 <10 <10 140 <10 580 40 <100 <100 1500 5300 <100 <5 <5 <5 31/03/2011 232316 K5 SV B (Trial) K 5 1 2100 8.5 21 <10 90 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <5 <5 5 09/12/2010 221373 TP F13 F 13 2S 2.3 2800 8.1 21 <10 <10 20 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 6 20/01/2011 224618 F16 A F 16 a 2S 1.4 2300 9 25 <10 40 <10 <10 <10 <10 <10 <10 10 <100 <100 <100 <100 <100 <5 <5 7 20/01/2011 224618 F16 B F 16 b 2S 1.2 2000 8.5 24 <10 <10 <10 <10 <10 <10 <10 <10 10 <100 <100 <100 <100 <100 <5 <5 11 01/12/2010 220489 TP D16b D 16 b 2S 2.5 2500 8.3 24 <10 <10 50 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 13 05/04/2011 232770 K6 Zone 1 ZN BV K 6 1 2500 7.9 21 <10 <10 <10 <10 <10 <10 20 20 130 <100 <100 <100 <100 <100 <5 10 <5 10/11/2011 256346 A17 SVE A 17 1 2200 8 9.2 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 10/11/2011 256346 A17 SVN A 17 1 2000 9.4 20 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 12/08/2011 246185 B17 2.5M B 17 1 2.5 2000 8.3 18 <10 20 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 10/11/2011 256349 B17 BV B 17 1 2100 8 12 <10 50 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 10/11/2011 256349 B17 SVS B 17 1 2100 7.9 9.3 <10 70 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 22/08/2011 247012 B18 4.7 B 18 2S 4.7 2100 8.4 16 <10 <10 <10 <10 <10 <0.01 <0.01 <0.01 <0.01 <0.1 <0.1 <0.1 <0.1 <0.1 <5 <5 <5 22/08/2011 247012 B19 5.2 B 19 2S 5.2 2100 8.5 15 <10 <10 <10 <10 <10 <0.01 <0.01 <0.01 <0.01 <0.1 <0.1 <0.1 <0.1 <0.1 <5 <5 <5 31/08/2011 248299 B21 4.9M B 21 1 4.9 2100 9 18 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 10/11/2011 256349 C17 BV C 17 1 2100 8.1 13 <10 60 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 10/11/2011 256349 C17 SVNE C 17 1 2200 8.3 9.2 <10 50 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 19/08/2011 246822 C20 5.5M C 20 2S 5.5 1700 8.5 19 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 19/08/2011 246823 C21 4.9M C 21 2S 4.9 2000 8.5 16 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 08/04/2010 195540 C22 C 22 2S 2.2 1900 8.2 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 19/07/2011 243419 C23 4M C 23 1 4 2100 8.8 14 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 12/04/2010 195723 C24 C 24 1 2.5 1900 8.4 <10 <10 <10 <10 <10 <50 <50 <50 <50 <100 <100 <100 <100 <100 <5 <5 <5 12/01/2011 223853 D14 D 14 1 1.45 1900 8.4 19 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 27/09/2011 251180 D14 BV D 14 1 2000 8.7 17 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 12/01/2011 223851 D15 B D 15 B 1 2.4 1900 8.7 15 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 27/09/2011 251180 D15 BV D 15 1 2000 8.4 18 <10 20 <10 <10 <10 <10 10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 19/08/2011 246822 D19 1.0M D 19 2S 1 2000 8.5 5.5 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 12/09/2011 249223 D20 4.9M D 20 2S 4.9 2100 8.3 17 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 08/09/2011 249227 D21 4.6M D 21 2S 4.6 2100 8.2 16 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 22/08/2011 247009 D22 4.5 D 22 2S 4.5 2000 8.4 19 <10 <10 <10 <10 <10 <0.01 <0.01 <0.01 <0.01 <0.1 <0.1 <0.1 <0.1 <0.1 <5 <5 <5 21/11/2011 257595 D25 5m D 25 3 5 2000 8.3 15 <10 <10 <10 <10 <10 <10 <10 <10 10 <100 <100 <100 <100 <100 <5 <5 <5 12/01/2011 223851 E14 B E 14 b 1 2.2 2000 8.4 18 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 12/01/2011 223853 E15 A E 15 a 1 3.65 2000 8.6 19 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 12/01/2011 223853 E15 B E 15 b 1 2.6 2000 8.8 21 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 27/09/2011 251190 E16 BV (CS) E 16 2S 2000 8.7 38 <10 20 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 12/09/2011 249231 E20 4.7M E 20 2S 4.7 <10 8.9 17 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 12/09/2011 249223 E21 4.9M E 21 2S 4.9 2200 8 18 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 19/08/2011 246997 E22 4.5M E 22 2S 4.5 2000 9.3 16 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 23/08/2011 247000 E23 4.5M E 23 3 4.5 2100 8.4 14 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 12/04/2010 195723 E25 E 25 3 0.7 1900 8.6 <10 <10 <10 <10 <10 <50 <50 <50 <50 <100 <100 <100 <100 <100 <5 <5 <5 20/01/2011 224432 F11 F 11 1 2800 8 22 <10 70 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 20/01/2011 224432 F12 F 12 2S 2300 8.1 20 <10 750 <10 <10 30 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 11/10/2011 252148 F13 SVE F 13 1 2100 8.7 15 <10 <10 <10 <10 <10 <10 <10 <10 10 <100 <100 <100 <100 <100 <5 <5 <5 23/09/2011 250748 F14 SV W (CS) F 14 2S 2200 9.2 14 <10 50 <10 <10 <10 <10 <10 30 <10 <100 <100 <100 <100 <100 <5 <5 <5 24/01/2011 224621 F15 A F 15 a 2S 1.8 2200 8.5 23 <10 <10 50 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 24/01/2011 224621 F15 B F 15 b 2S 1.5 2100 8.5 25 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 23/09/2011 250748 F15 SV S F 15 2S 2700 11 25 <10 <10 <10 <10 <10 23 <10 92 100 <100 <100 200 <100 <100 <5 <5 <5 23/09/2011 250748 F15 SV W F 15 2S 2200 9.8 11 <10 <10 <10 <10 <10 <10 <10 120 40 <100 <100 <100 <100 <100 <5 <5 <5 25/10/2011 254134 F18 2.8M (CS) F 18 2S 2.8 2000 8.2 15 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 19/10/2011 253603 F19 BV F 19 2S 2200 7.7 14 <10 <10 30 60 <10 <10 <10 <10 30 <100 <100 <100 <100 <100 <5 <5 <5 19/10/2011 253603 F19 SVE (CS) F 19 2S 2200 8.3 13 <10 <10 130 70 <10 <10 <10 <10 10 <100 <100 <100 <100 <100 <5 <5 <5 19/10/2011 253603 F19 SVN F 19 2S 2200 8.3 14 <10 30 140 90 <10 <10 <10 <10 10 <100 <100 <100 <100 <100 <5 <5 <5 19/10/2011 253603 F19 SVS F 19 2S 2200 8.2 6.8 <10 <10 <10 90 <10 <10 <10 <10 20 <100 <100 <100 <100 <100 <5 <5 <5 28/10/2011 254852 F20 3.9M F 20 2S 3.9 2100 8.5 15 <10 20 <10 <10 <10 <10 <10 <10 10 <100 <100 <100 <100 <100 <5 <5 <5 25/10/2011 254134 F21 4.0M F 21 2S 4 2000 8.3 15 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 14/09/2011 249835 F22 4.5 F 22 3 4.5 2100 8.3 14 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 22/08/2011 247003 F23 4.0M F 23 3 4 4300 8.4 18 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 14/09/2011 249837 F24 4.5M F 24 3 4.5 2100 8.5 13 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 12/04/2010 195723 F25 F 25 3 1.5 1900 8.5 <10 <10 <10 <10 <10 <50 <50 <50 <50 <100 <100 <100 <100 <100 <5 <5 <5 14/06/2011 239880 G16 SV G 16 2S 2800 8.7 18 <10 280 160 <200 <10 <10 <10 <10 100 <100 <100 <100 <100 <100 <5 <5 <5 02/11/2011 255401 G19 1.0M G 19 2S 1 <10 8.4 11 <10 <10 10 40 <10 <10 <10 <10 10 <100 <100 <100 <100 <100 <5 <5 <5 25/10/2011 254129 G20 1.0M G 20 2S 1 1900 8.2 13 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 25/10/2011 254129 G21 2.95M G 21 2S 2.95 600 8.2 13 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 06/09/2011 248811 G22 2.7M G 22 3 2.7 2100 7.9 17 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 06/09/2011 248811 G23 2.5M G 23 3 2.5 2000 8.1 16 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 06/09/2011 248811 G24 2.5M G 24 3 2.5 2200 8.2 17 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 21/11/2011 257595 G25 1m G 25 3 1 2000 8 6.6 <10 <10 <10 <10 <10 <10 <10 <10 10 <100 <100 <100 <100 <100 <5 <5 <5 21/04/2010 196655 H15 BV H 15 2S 4.0m 2200 7.9 <10 <10 <10 <100 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 13/06/2011 239402 H17 H 17 2S 2200 8.6 15 <10 30 <10 <10 <10 20 30 40 80 <100 <100 <100 <100 <100 <5 <5 <5 07/10/2011 252167 H21 3.5M H 21 3 3.5 2000 8.2 22 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 28/09/2011 250856 H22 3.0M H 22 3 3 2100 8.4 14 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 07/10/2011 252163 H23 2.5M H 23 3 2.5 2000 8.3 18 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 16/11/2011 257084 H24 (CS) H 24 3 2100 7.3 12 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <2000 <100 <5 <5 <5 24/06/2011 240637 I10 SV I 10 2N 2600 7.6 7.5 <10 <10 <10 <10 <10 <10 <10 410 30 <100 <100 <100 <100 <100 <5 <5 <5 26/09/2011 250862 I15 SVE I 15 2S 2200 8.4 13 <10 440 <10 20 <10 84 41 <10 490 <100 <100 850 <100 <100 <5 <5 <5 26/09/2011 250862 I16 SVE I 16 2S 2200 8.3 18 <10 70 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 02/11/2011 255408 I18 3.7M I 18 2S 3.7 <10 8.2 18 <10 <10 <10 <10 <10 <10 <10 <10 20 <100 <100 <100 <100 <100 <5 <5 <5 07/10/2011 252139 I20 3.5M I 20 3 3.5 2000 8.3 20 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 11/10/2011 252525 I21 3.9 I 21 3 3.9 2300 8.2 20 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 11/10/2011 252525 I22 3.1 I 22 3 3.1 2200 8.2 18 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 27/09/2011 251176 I23 2.6M I 23 3 2.6 2000 8.3 20 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 16/11/2011 257084 I24 (CS) I 24 3 2100 7.6 11 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 11/07/2011 242714 I6 WALL I 6 2N 2600 8.3 17 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 31/03/2011 232310 I6 Zone 1 BV I 6 1 2200 8.2 22 <10 10 <10 <10 30 20 <10 70 20 <100 <100 <100 <100 <100 <5 <5 <5 31/03/2011 232310 I7 Zone 1 BV I 7 1 2000 7.7 22 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 31/03/2011 232310 I7 Zone 2N BV I 7 2N 2100 8.3 22 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 08/07/2011 242852 J13 SV W J 13 2S 3700 8 19 <10 <10 <10 <10 <10 20 <10 <10 <10 <100 <100 20000 6800 <100 <5 <5 <5 28/10/2011 254852 J17 1.5M J 17 2S 1.5 2100 8.6 19 <10 110 70 350 <10 <10 <10 <10 40 <100 <100 <100 <100 <100 <5 <5 <5 28/10/2011 254852 J17 2.5M (CS) J 17 2S 2.5 2100 8.4 25 <10 110 <10 <10 <10 <10 <10 <10 10 <100 <100 <100 <100 <100 <5 <5 <5 02/11/2011 255408 J18 2.8M J 18 3 2.8 <10 8.3 16 <10 <10 <10 <10 <10 <10 <10 <10 10 <100 <100 <100 <100 <100 <5 <5 <5 02/11/2011 255406 J19 1.9M J 19 3 1.9 <10 8.2 16 <10 <10 <10 <10 <10 <10 10 <10 60 <100 <100 <100 <100 <100 <5 <5 <5 02/11/2011 255406 J19 3.8M (CS) J 19 3 3.8 <10 8.2 21 <10 <10 <10 <10 <10 <10 <10 <10 10 <100 <100 <100 <100 <100 <5 <5 <5 02/11/2011 255406 J20 2.8M J 20 3 2.8 <10 8.2 17 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 28/10/2011 254858 J21 2.6M J 21 3 2.6 2100 8.1 22 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 17/10/2011 252988 J22 2.5M J 22 3 2.5 2200 9.6 18 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 17/10/2011 252988 J23 2.5M J 23 3 2.5 2200 9.1 18 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 16/11/2011 257084 J24 (CS) J 24 3 2100 7.4 7.5 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 11/07/2011 242714 J6 WALL J 6 1 2400 8.4 17 <10 10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 31/03/2011 232310 J6 Zone 1 BV J 6 1 2100 8.3 22 <10 <10 <10 <10 10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 18/03/2011 230930 J6 Zone 2N BV J 6 2N 2100 8.1 17 <10 <10 <10 <10 <10 <10 <10 <10 20 <100 <100 <100 <100 <100 <5 <5 <5 18/04/2011 233858 J7 Drainage Trench BV J 7 2N 2700 8.7 22 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 18/04/2011 233858 J7 Drainage Trench SV2 J 7 2N 2600 8.5 22 <10 <10 <10 <10 <10 <10 <10 <10 50 <100 <100 <100 <100 <100 <5 <5 <5 23/06/2010 203335 J7 VS J 7 2N 2300 8.5 <10 <10 <10 <100 <10 <10 <10 <10 <10 <100 <100 110 <100 <100 <5 <5 <5 11/07/2011 242412 K13 5.4M K 13 2S 5.4 3900 7.9 21 <10 <10 <10 <10 <10 <10 <10 <10 60 <100 <100 1100 8200 <100 <5 <5 <5 21/04/2010 196655 K14 BV K 14 2S 4.0m 2100 8.2 <10 <10 <10 <100 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 19/04/2010 196515 K16 BV 6 K 16 3 2700 6.5 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 01/11/2011 255206 K20 2.5M (CS) K 20 3 2.5 2200 8.1 21 <10 <10 <10 <10 <10 <10 <10 <10 10 <100 <100 <100 <100 <100 <5 <5 <5 28/10/2011 254855 K21 3.1M K 21 3 3.1 2100 8.2 20 <10 <10 <10 <10 <10 <10 <10 <10 10 <100 <100 <100 <100 <100 <5 <5 <5 27/09/2011 250882 K22 2.7M K 22 3 2.7 2100 8.2 19 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 17/10/2011 252988 K23 2.5M K 23 3 2.5 2200 10.6 17 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 16/11/2011 257084 K24 (CS) K 24 3 2100 7.9 13 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 11/07/2011 242714 K5 WALL K 5 1 2300 8.2 17 <10 40 <10 <10 <10 <10 <10 30 <10 <100 <100 <100 <100 <100 <5 <5 <5 08/11/2011 256029 L10 0.5 L 10 2N 0.5 2200 7.2 17 <10 <10 <10 <10 <10 <10 <10 30 60 <100 <100 <100 <100 <100 <5 <5 <5 28/03/2011 231688 L12 L 12 2N 3.2 2400 7.6 23 <10 <10 <10 <10 <10 <10 <10 <10 230 <100 <100 <100 630 <100 <5 <5 <5 30/03/2011 232134 L14 L 14 2S 3.4 2900 8.5 17 <10 <10 <10 <10 <10 <10 <10 <10 5900 <100 <100 <100 3600 <100 <5 <5 <5 16/11/2011 257081 L17 (CS) L 17 3 2100 8 10 <10 <10 40 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5

Validation reports colour devided revised SV, BV, TP worksheet B_HB.xlsx/Revised SV, BV, TP validations 6/22 Phenoxy Acetic Phenoxy Phenoxy acid Acetic Acetic 2-Methyl- 4-Chloro- herbicide: acid acid 2,4,6- 4,6- 2- Bis (2- 1,2- 1,2- Cis-1,2- Electrical Ethofumesa Dichlorpr herbicide: herbicide: Trichlorop dinitrophe methylph chloroethyl) Dichlorob Dichloroet Dichloroethy Report Column Conductivity pH Moisture Dimefox te Hempa Schradan Simazine Dicamba op MCPA Mecoprop henol nol enol ether Phenol enzene hane lene Report Date Number BV Reference Row Column Letters Zone Depth µS/CM % µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg 16/11/2011 257081 L18 (CS) L 18 3 2100 7.8 11 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 16/11/2011 257081 L19 (CS) L 19 3 2100 7.7 7.9 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 16/11/2011 257081 L20 (CS) L 20 3 2100 7.7 14 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 16/11/2011 257081 L21 (CS) L 21 3 2100 7.6 14 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 08/11/2010 217795 L5 L 5 1 3.5 2300 8.8 18 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 28/10/2011 254891 L5 SVW L 5 1 2100 9.1 18 <10 30 <10 <10 <10 <10 <10 <10 10 <100 <100 <100 <100 <100 <5 <5 <5 06/12/2011 259483 L5 Z1 BV L 5 1 2300 8.8 15 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 200 <100 <5 <5 <5 06/12/2011 259483 L5 Z1 SVE L 5 1 2100 9.1 19 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 06/12/2011 259483 L5 Z1 SVN L 5 1 2200 8.8 21 <10 20 <10 10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 06/12/2011 259483 L5 Z1 SVW L 5 1 2200 8.8 19 <10 30 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 06/12/2011 259483 L5 Z2 SVN L 5 2N 2100 8.9 20 <10 20 <10 <10 <10 <10 <10 <10 20 <100 <100 <100 <100 <100 <5 <5 <5 13/06/2011 239578 L6 BV 4.0m L 6 2N 4 2500 7.5 19 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 300 <100 <5 <5 <5 31/03/2011 232316 L6 SV (Trial) L 6 2N 2200 8.5 17 <10 30 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <5 <5 <5 13/06/2011 239578 L7 BV 4.0m L 7 2N 4 2400 7.6 19 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 08/11/2011 256029 L9 0.5 L 9 2N 0.5 2100 7.9 14 <10 <10 <10 <10 <10 <10 <10 30 60 <100 <100 <100 <100 <100 <5 <5 <5 08/11/2010 217795 M4 M 4 1 3.92 2300 8.6 15 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 08/11/2010 217797 M5 M 5 2N 3.9 2600 8.1 21 <10 <10 <10 <10 <10 <10 <10 <10 40 <100 <100 <100 <100 <100 <5 <5 <5 08/11/2010 217797 N4 N 4 1 1.5 2300 7.3 21 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 09/12/2010 221370 TP E12 E 12 1 2.5 2400 8.2 23 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 09/12/2010 221373 TP E13 E 13 1 2.8 2400 8.1 22 <10 <10 170 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 09/12/2010 221370 TP F12 F 12 1 2.3 2400 8.7 24 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 26/09/2011 250862 I16 SVS I 16 2S 2100 8.4 15 <10 330 <10 <10 <10 <10 <10 <10 69 <100 <100 180 <100 <100 8 <5 <5 30/09/2011 251696 E14 SV WEST E 14 1 2200 8.1 13 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 7 <5 <5 14/05/2010 199157 K8 SV2 K 8 2N 2400 8.2 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 5400 <100 <50 <50 <50 30/11/2011 258839 K8 BV 2.4M K 8 2N 2.4 3300 8.3 18 <10 10 <10 <10 <10 50 50 3200 1300 250 <100 7200 10000 130 <50 <50 1500 15/08/2011 246538 I12 BV I 12 2S 2200 8.5 21 <10 10 <10 10 <10 50 <10 6400 20 <100 <100 8200 2600 <100 <50 <50 <50 30/11/2011 258839 L8 GAULT 3.8M L 8 2N 3.8 3200 8 22 <10 <10 <10 <10 <10 20 30 450 470 <100 <100 14000 16000 100 <50 <50 640 01/08/2011 244972 H12 SVS H 12 2S 2000 7.8 20 <100 <100 13,000 700 1800 <10 <10 50 <10 <10 60 <10 11000 <10 <50 <50 240 01/08/2011 244972 H12 SVW H 12 2S 2100 8.1 19 <100 <100 <100 500 <100 <10 <10 <10 <10 <10 <10 <10 <10 <10 <50 <50 340 28/07/2010 206893 H10 Trial H 10 2S 3400 8.2 <10 40 40 <10 <10 70 <10 6900 <10 <100 <100 270 44000 <100 <50 2100 <50 11/10/2011 252148 E13 BV E 13 1 2100 7.8 24 <10 <10 30 <10 <10 10 <10 <10 30 <100 <100 4300 <100 <100 <50 <50 <50 17/11/2011 257086 G15 1.68M G 15 2S 1.68 19 60 17/11/2011 257086 H15 3.54M H 15 2S 3.54 22 50 17/11/2011 257086 H16 3.57M H 16 2S 3.57 22 20 24/06/2011 240637 I9 BV I 9 2N 14/07/2010 205640 J7 BV J 7 2N <10 <10 <10 <10 <10 24/06/2011 240637 K10 BV K 10 2N 11/07/2011 242412 L13 5.4M L 13 2N 5.4 22 02/09/2011 248595 F12SVE F 12 2S 19 02/09/2011 248595 F12SVN F 12 2S 21 02/09/2011 248595 F12SVS F 12 2S 20 08/07/2010 205069 K7 SV A K 7 2N <10 <10 <10 <10 <10 08/07/2010 205069 K7 SV B K 7 2N <10 <10 <10 <10 <10 08/07/2010 205069 L7 SV A L 7 2N <10 <10 <10 <10 <10 08/07/2010 205069 L7 SV B L 7 2N <10 <10 <10 <10 <10 08/07/2010 205069 L7 SV C L 7 2N <10 <10 <10 <10 <10 08/07/2010 205069 L7 SV D L 7 2N <10 <10 <10 <10 <10 08/07/2010 205069 K7 BV A K 7 2N <10 <10 <10 <10 <10 08/07/2010 205069 K8 VS K 8 2N <10 <10 <10 <10 <10 08/07/2010 205069 L7 L 7 2N 10m <10 <10 <10 <10 <10 08/07/2010 205069 L7 BV A L 7 2N <10 <10 <10 <10 <10 16/12/2010 221996 TP D16B D 16 b 2S 0.3 16/12/2010 221996 TP D17 D 17 2S 0.1 16/12/2010 221994 TP E16A E 16 2S <0.1

Number of samples 395 395 350 406 406 409 409 402 395 395 395 395 395 395 395 395 395 395 395 395 Minimum value 10.00 6.50 4.90 10.00 10.00 0.10 10.00 10.00 0.01 0.01 0.01 0.01 0.10 0.10 0.10 0.10 0.10 5.00 5.00 5.00 Maximum value 8200.00 20.00 84.00 100000.00 100000.00 100000.00 100000.00 3300.00 240.00 950.00 73000.00 5900.00 2000.00 1000.00 27000.00 1100000.00 1000.00 5100.00 37000.00 1700.00 Second highest value 7600.00 11.70 38.00 100.00 27000.00 13000.00 5700.00 1800.00 200.00 200.00 46000.00 3800.00 1000.00 1000.00 25000.00 550000.00 1000.00 1300.00 17000.00 1500.00 0.01- 0.01- 0.1- 0.1- Range 10- 8200 6.5- 20 4.9- 84 10- 100000 10- 100000 0.1- 100000 10- 100000 10- 3300 0.01- 240 0.01- 950 73000 5900 0.1- 2000 0.1- 1000 27000 1100000 0.1- 1000 5- 5100 5- 37000 5- 1700

Average concentration 2398.66 8.35 18.66 258.12 508.77 325.01 299.14 33.93 19.26 19.93 681.90 88.23 116.53 105.06 743.72 7610.71 113.87 28.13 228.36 30.12 Number of exceedances 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 395 395 % above assessment criteria 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.25 100.00 100.00 Assessment criteria - - - NA NA NA NA NA NA NA NA NA 16000 NA NA NA 78000 1500 3.0 0.5 Surrogate Atkins SSV (Vinyl Surrogate Chloride) Atkins Surrogat SSV e Atkins Source of (Pentachl SSV assessment Not Not Not Not Not orophenol Not Not Not Hauxton (chlorob Atkins criteria - - - Not volatile Not volatile Not volatile Not volatile volatile volatile volatile volatile volatile ) volatile volatile volatile SSV enzene) SSV Notes Coloured text from original spreadsh hb eet Across different zones informatio n enetered for zone area

Validation reports colour devided revised SV, BV, TP worksheet B_HB.xlsx/Revised SV, BV, TP validations 7/22 Revised SV, BV, TP validation samples assessment

2,6- bis(1,1- 1,2- 1-(2- dimethyle bis(2,4,6- Chloroeth 2(1- thyl)-4-(1- 2,6-bis(1- Vinyl trichlorop oxy)-2-(o- methylpro 2,3,6- 2,4- methylpro methylpro Bis(2- Dichloro 2- Trichlorob Trichloro Dichloro 1- Cyclohex Tetrachlor Trichloroe chloride Xylene henoxy)et Tolyloxy)- pyl)- Trichlorot Dichloro- pyl)- pyl)- ethylhexyl methylph Methylna enzenea methylbe methylbe Methylna Report Column anone oethylene Toluene thylene monomer (Total) hane ethane phenol oluene o-cresol phenol phenol ) maleate enol pthalene Dinoseb mine nzene nzene pthalene Report Date Number BV Reference Row Column Letters Zone Depth µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg 07/09/2011 249094 F19 4.4M F 19 2S 4.4 <10 2200 <1 30 <5 <1 120000 26000 19/10/2011 253608 E19 SVE E 19 2S <10 640 <1 <5 <5 <1 780 24/06/2011 240637 J10 SV J 10 2N <10 51 3 <5 <5 1 400 800 900 6800 24/06/2011 240637 J10 BV J 10 2N 19/10/2011 253608 E19 BV E 19 2S <20 3000 <2 130 <10 7 11110 14/09/2011 249465 I13 BV I 13 2S <10 90 3 160 <5 23 280 07/07/2011 242275 J11 SV E J 11 2S <10 7600 2 750 41 <1 4710 120 07/07/2011 242275 J11 BV J 11 2S <10 100 <1 5 <5 <1 170 19/10/2011 253608 E19 SVN E 19 2S <10 14 <1 <5 <5 <1 280 14/09/2011 249465 H13 BV H 13 2S <10 400 8 490 <5 7 510 540 27/04/2011 235158 J10 BV J 10 2N <10 2600 300 82 <5 5 160 440 880 27/04/2011 235158 I9 BV I 9 2N <10 16000 1100 760 5 39 260 8750 240 2400 15/07/2011 243421 I11 SVS I 11 2N <10 8 25 <5 3 2000 3000 15/07/2011 243421 I11 SVE I 11 2N <10 6100 9 79 <5 <1 3900 4500 15/07/2011 243421 I11 BV I 11 2N <10 240 93 <5 12 8400 19000 08/07/2011 242852 K11BV K 11 2N <10 1000 1 48 6 <1 1100 14/06/2011 239880 G16 BV G 16 2S <10 <5 <1 <5 6 <1 16/06/2011 240124 I17 I 17 2S 3.4 <10 <5 <1 <5 6 <1 24/05/2010 199763 J7 BV J 7 2N <10 110 250 36 7 13 28/10/2011 254891 F11 SVE F 11 1 <10 12 <1 70 7 <1 08/11/2010 217789 M8 M 8 2N 3.7 <10 <5 20 <5 7 10 06/06/2011 238884 L7 Marl SW L 7 2N <10 8 35 <5 7 40 20/01/2011 224432 F13 F 13 1 <10 650 <1 13 10 7 11/07/2011 242714 H9 WALL H 9 2N <10 580 580 170 11 12 14/06/2011 239880 H16 SV H 16 2S <10 <5 2 8 22 5 11/07/2011 242714 H8 WALL H 8 2N <10 2500 16 470 40 57 06/07/2011 242153 L9 SV W L 9 2N <10 22 10 10 62 10 24/08/2010 209399 J13 TP2 J 13 2S 2.2 <20 <10 2400 44 <10 14 15/09/2010 211994 H14 Trial BV H 14 2S <20 87 <10 1100 <10 6 27/09/2011 251190 C16 BV (CS) C 16 1 <20 300 <2 <10 <10 <2 06/12/2011 259469 M8 BV M 8 2N <50 83 <5 26 <25 <5 01/08/2011 244972 H12 BV L H 12 2S <50 490 <5 31 <25 <5 11/05/2011 236127 K10 K 10 2N 2m <50 34000 1400 35 <25 130 08/09/2011 248818 K5 BV 2.8M K 5 1 2.8 <50 54 <25 41 <25 <5 20/01/2011 224432 E13 E 13 1 <50 41 <5 44 <25 180 24/05/2010 199763 J8 J 8 2N <50 420 2100 50 <25 47 19/09/2011 250154 G15 BV G 15 2S <50 <25 <5 120 <25 <5 28/07/2010 206893 I10 Trial I 10 2N <50 990 160 140 <25 <5 11/05/2011 236127 I9 I 9 2N 2m <50 91000 590 250 <25 21 13/05/2010 198957 L7 BV L 7 2N <50 8000 2200 330 <25 2000 01/08/2011 244972 H12 BV U H 12 2S <50 74 <5 550 <25 <5 19/09/2011 250154 G14 BV G 14 2S <50 <25 <5 1900 <25 12 03/08/2011 245225 G11 BV G 11 2S <50 69 27 3700 <25 <5 3600 01/08/2011 244975 I10 BV I 10 2N <50 2500 8 <25 <25 <5 08/09/2011 248818 L5 BV 2.8M L 5 1 2.8 <50 <25 57 <25 <25 <5 30/08/2011 248118 G8 BV G 8 2N <50 32 69 <25 <25 <5 30/08/2011 248118 H7 BV H 7 2N <50 <25 78 <25 <25 <5 13/05/2010 198957 K7 BV2 K 7 2N <50 190 420 <25 <25 <25 06/12/2011 259541 L6 3.0 L 6 2N 3 <50 <25 <25 <25 <25 60 01/08/2011 244972 H12 SVE H 12 2S <50 37 <5 <25 <25 <5 01/08/2011 244975 H10 BV H 10 2S <50 170 <5 <25 <25 <5 01/08/2011 244975 H11 BV H 11 2S <50 420 <5 <25 <25 <5 31/08/2011 248299 B22 6.0M B 22 1 6 <50 <25 <5 <25 <25 <5 20/01/2011 224432 E12 E 12 1 <50 <25 <5 <25 <25 <5 06/12/2011 259478 L5 ZONE 2 4.0M L 5 2N 4 <50 <25 <5 <25 <25 <5 30/11/2011 258839 L8 SVW 2.2M L 8 2N 2.2 <50 <25 <5 <25 <25 <5 06/12/2011 259497 M7 TRENCH BV M 7 2N <50 <25 <5 <25 <25 <5 06/12/2011 259469 M8 SV W M 8 2N <50 <25 <5 <25 <25 <5 06/12/2011 259469 M9 BV M 9 2N <50 <25 <5 <25 <25 <5 06/12/2011 259469 M9 SV W M 9 2N <50 <25 <5 <25 <25 <5 08/09/2010 211302 I15 Trial BV I 15 2S <10 640 5 5 <5 2 12/08/2010 208691 J13 Trial BV Sample J 13 2S <10 6 <1 5 <5 2 07/07/2011 242275 K12 K 12 2S <10 9 <1 5 <5 <1 100 18/04/2011 233858 K8 Zone 2N BV K 8 2N <10 18 1 6 <5 <1 14/06/2011 239880 H16 BV H 16 2S <10 <5 1 6 <5 12 15/07/2011 243421 I12 SVS I 12 2S <10 400 7 6 <5 <1 03/08/2011 245225 G11 SVE G 11 2S <10 <5 <1 6 <5 <1 31/08/2011 248300 E17 5M E 17 2S 5 <10 37 1 7 <5 <1 01/12/2010 220489 TP D16a D 16 a 2S 2.5 <10 46 2 7 <5 3 07/07/2011 242275 J12 BV J 12 2S <10 56 16 7 <5 <1 21/07/2010 206314 L8 BV L 8 2N <10 19 20 7 <5 1 30/08/2011 248118 G10 BV G 10 1 <10 <5 150 7 <5 1 03/08/2011 245225 G12 SVE G 12 2S <10 <5 <1 7 <5 <1 01/08/2011 244975 I11 BV I 11 2S <10 110 <1 8 <5 <1 23/09/2011 250748 F15 TRENCH F 15 2S <10 <5 <1 8 <5 2 30/09/2011 251696 E14 BV E 14 1 <10 <5 <1 8 <5 <1 14/05/2010 199157 K7 TBV K 7 2N <10 50 14 9 <5 <1 07/11/2011 255889 L15 SVW L 15 3 <10 26 15 9 <5 <1 02/11/2011 255401 G19 2.5M (CS) G 19 2S 2.5 <10 26 <1 9 <5 <1 12/01/2011 223851 E14 A E 14 a 1 2.4 <10 <5 <1 9 <5 1 25/10/2011 254335 F17 3.9M F 17 2S 3.9 <10 <5 <1 9 <5 <1 15/07/2011 243421 I10 SVE I 10 2N <10 460 9 10 <5 <1 13/06/2011 239401 K15 Pile Base K 15 2S <10 46 1 11 <5 <1 01/12/2010 220493 TP E16a E 16 a 2S 2.5 <10 75 3 11 <5 6 5m from top of 13/05/2011 236575 K9 trial sample in gault K 9 2N gault <10 14000 300 11 <5 12 30/09/2011 251696 C15 BV C 15 1 <10 26 <1 11 <5 <1 30/06/2011 241798 I8 B BV I 8 2N <10 500 <1 11 <5 <1 23/09/2011 250748 F15 BV F 15 2S <10 <5 <1 11 <5 3 28/10/2011 254891 L5 BV L 5 1 <10 <5 <1 12 <5 <1 30/08/2011 248118 G9 BV G 9 1 <10 10 61 14 <5 <1 12/04/2010 195725 K16 K 16 3 2.9 <10 74 <1 14 <5 <1 14/05/2010 199157 K7 SV1 K 7 2N <10 79 6 15 <5 <1 8m from top of 13/05/2011 236575 J9 trail sample in gault J 9 2N gault <10 11000 370 15 <5 29 02/06/2011 238165 I14 BV I 14 2S 3 <10 16 3 16 <5 <1 08/11/2010 217800 M9 M 9 2N 3.4 <10 7 2 17 <5 2 14/05/2010 199157 K7 SV2 K 7 2N <10 86 23 17 <5 <1 05/07/2010 204070 I8 BV I 8 2N <10 320 24 17 <5 <1 12/08/2010 208691 K13 Trial BV Sample K 13 2S <10 81 31 17 <5 10 07/10/2011 252135 F16 2.65M F 16 2S 2.65 <10 <5 <1 17 <5 <1 28/10/2011 254855 G17 3.1M (CS) G 17 2S 3.1 <10 28 <1 18 <5 <1 01/12/2010 220493 TP E17 E 17 2S 2 <10 52 2 19 <5 3 02/11/2011 255404 H18 3.5M H 18 2S 3.5 <10 <5 <1 19 <5 4 01/08/2011 244975 I12 SVE I 12 2S <10 41 2 20 <5 <1 06/12/2011 259497 M7 TRENCH SVE M 7 2N <10 1200 38 22 <5 23 26/09/2011 250862 I16 BV (CS) I 16 2S <10 6 1 23 <5 5 15/07/2011 243421 I12 SVE I 12 2S <10 15 23 <5 <1 01/11/2011 255202 K17 2.5M K 17 3 2.5 <10 85 <1 23 <5 <1 24/08/2010 209399 J12 TP1 J 12 2S 1.8 <10 140 51 25 <5 20 18/04/2011 233858 J7 Zone 2N BV J 7 2N <10 <5 3 26 <5 2 28/06/2010 203772 L7 SV B L 7 2N <10 890 8 27 <5 6 27/04/2011 234979 J8 2 BV J 8 2N <10 43 4 28 <5 <1 12/01/2011 223851 D15 A D 15 A 1 2.45 <10 150 <1 28 <5 <1 20/04/2011 234538 L8 TP L 8 2N 0.6 <10 1000 2 30 <5 5 30/06/2011 241798 H8 2N BV H 8 2N <10 5200 <1 30 <5 16 27/09/2011 251180 E15 BV E 15 1 <10 14 5 31 <5 130 19/09/2011 250154 G14 SV E 2 G 14 2S <10 <5 <1 31 <5 <1 19/09/2011 250154 G14 SV E 1 G 14 2S <10 <5 <1 32 <5 <1 27/04/2011 234979 K8 2 BV K 8 2N <10 42 3 35 <5 <1 13/05/2011 236129 L10 BV L 10 2N <10 860 25 41 <5 2 30/06/2011 241798 H9 2N BV H 9 2N <10 280 <1 43 <5 <1 06/06/2011 238884 H14 SV Trench H 14 2S <10 <5 2 44 <5 <1 14/06/2011 239880 H15 BV H 15 2S <10 <5 3 46 <5 65 0.5m from top 13/05/2011 236575 I9 trial sample in gault I 9 2N of gault <10 4600 170 46 <5 4 10/11/2011 256349 C17 SVN C 17 1 <10 5 <1 47 <5 <1 02/11/2011 255401 G18 3.5M G 18 2S 3.5 <10 6 <1 48 <5 <1 01/12/2010 220489 TP D17 D 17 2S 3 <10 190 <1 52 <5 <1 29/10/2010 216821 H17 H 17 2S 2 <10 <5 2 58 <5 7 11/10/2011 252148 G11 BV G 11 1 <10 <5 5 58 <5 3 19/09/2011 250160 D24 5.5M D 24 3 5.5 <10 <5 1 59 <5 <1 19/09/2011 250154 G15 SV E G 15 2S <10 <5 <1 60 <5 <1 27/04/2011 235158 K10 BV K 10 2N <10 1500 71 61 <5 <1 4m from top of 13/05/2011 236575 L9 trail sample in gault L 9 2N gault <10 21000 3200 65 <5 45 27/04/2011 234979 K7 FACE VALIDATION K 7 2N <10 20 3 67 <5 <1 28/10/2011 254891 L5 SVN L 5 1 <10 <5 29 67 <5 <1 19/09/2011 250160 D23 5.5M D 23 3 5.5 <10 <5 <1 72 <5 <1 14/05/2010 199157 K8 TBV K 8 2N <10 670 32 76 <5 1 27/04/2011 235158 J9 BV J 9 2N <10 990 54 79 <5 <1 19/09/2011 250160 E24 5.5M E 24 3 5.5 <10 <5 <1 87 <5 <1 06/06/2011 238884 H14 SV2 Trench H 14 2S <10 <5 3 94 <5 16 15/09/2010 211994 H14 H 14 2S 0.5 <10 9 3 96 <5 1 28/06/2010 203772 L7 L 7 2N 10m <10 2400 14 96 <5 6 11/05/2011 236127 J10 J 10 2N 2m <10 1200 24 97 <5 3 19/09/2011 250156 G10 BV 2S G 10 1 <10 24 <1 98 <5 <1 18/03/2011 230930 I6 Zone 2N BV I 6 2N <10 10 19 120 <5 <1 31/03/2011 232310 J7 Zone 2N BV J 7 2N <10 <5 <1 140 <5 <1 19/09/2011 250156 G12 BV 2S G 12 2S <10 9 2 160 <5 <1 06/07/2011 242153 L10 SV W L 10 2N <10 4100 62 180 <5 6 03/08/2011 245228 G8 BV G 8 1 <10 2100 1400 190 <5 78 03/08/2011 245228 H7 BV H 7 1 <10 3000 22 210 <5 160 8000 19/09/2011 250156 G9 BV 2S G 9 1 <10 14 <1 280 <5 <1 19/09/2011 250156 G11 BV 2S G 11 1 <10 200 <1 330 <5 <1 28/10/2011 254891 F11 BV F 11 1 <10 500 1 680 <5 7 03/08/2011 245225 G12 BV G 12 2S <10 23 22 1900 <5 85 500 16/07/2010 205918 L11 BV L 11 2N <10 6 1 <5 <5 <1 08/07/2011 242852 J13 SV E J 13 2S <10 10 1 <5 <5 <1 13/06/2011 239401 K14 Pile Base K 14 2S <10 22 1 <5 <5 <1 08/07/2011 242852 K12 SV SW K 12 2S <10 23 1 <5 <5 <1 18/04/2011 233858 K7 Zone 2N BV K 7 2N <10 230 1 <5 <5 <1 09/12/2010 221370 TP F11 F 11 1 2.8 <10 <5 1 <5 <5 5 11/10/2011 252148 E13 SVE E 13 1 <10 <5 1 <5 <5 490 03/08/2011 245225 G13 SVE G 13 2S <10 <5 1 <5 <5 <1 26/08/2010 210115 J14 Trial BV J 14 2S <10 <5 1 <5 <5 <1 18/04/2011 233858 J7 Drainage Trench SV J 7 2N <10 <5 1 <5 <5 <1 18/04/2011 233858 J8 Zone 2N BV J 8 2N <10 <5 1 <5 <5 <1 06/06/2011 237754 L8 Sidewall Validation L 8 2N <10 <5 1 <5 <5 <1 26/09/2011 250862 I15 BV I 15 2S <10 5 2 <5 <5 66 06/06/2011 237754 L7 Sidewall Validation L 7 2N <10 7 2 <5 <5 <1 08/07/2011 242852 J13 BV J 13 2S <10 13 2 <5 <5 <5 29/06/2011 241566 L10B BV L 10 2N <10 24 2 <5 <5 <1 06/06/2011 238884 L6 Marl SW L 6 2N <10 47 2 <5 <5 <1 23/09/2011 250748 G13 BV G 13 2S <10 <5 2 <5 <5 1 14/04/2010 195983 BV J16 J 16 2S <10 <5 2 <5 <5 36 18/04/2011 233858 J7 Drainage Trench BV2 J 7 2N <10 <5 2 <5 <5 <1 12/04/2010 195725 K15 K 15 2S 2.7 <10 <5 2 <5 <5 33 14/07/2010 205640 L10 Trial L 10 2N <10 <5 2 <5 <5 <1 07/11/2011 255890 M5 WELL BASE M 5 2N <10 <5 2 <5 <5 <1 01/12/2010 220493 TP E16b E 16 b 2S 2.5 <10 <5 2 <5 <5 5 06/06/2011 238884 L8 Marl SW L 8 2N <10 8 3 <5 <5 <1 28/06/2010 203772 L7 BV A L 7 2N <10 130 3 <5 <5 <1 28/06/2010 203772 L7 SV C L 7 2N <10 140 3 <5 <5 <1

Validation reports colour devided revised SV, BV, TP worksheet B_HB.xlsx/Revised SV, BV, TP validations 8/22 2,6- bis(1,1- 1,2- 1-(2- dimethyle bis(2,4,6- Chloroeth 2(1- thyl)-4-(1- 2,6-bis(1- Vinyl trichlorop oxy)-2-(o- methylpro 2,3,6- 2,4- methylpro methylpro Bis(2- Dichloro 2- Trichlorob Trichloro Dichloro 1- Cyclohex Tetrachlor Trichloroe chloride Xylene henoxy)et Tolyloxy)- pyl)- Trichlorot Dichloro- pyl)- pyl)- ethylhexyl methylph Methylna enzenea methylbe methylbe Methylna Report Column anone oethylene Toluene thylene monomer (Total) hane ethane phenol oluene o-cresol phenol phenol ) maleate enol pthalene Dinoseb mine nzene nzene pthalene Report Date Number BV Reference Row Column Letters Zone Depth µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg 19/08/201107/09/2011 246822249094 B20F19 4.4M1.6M BF 2019 2S 1.64.4 <10 <5 3 <5 <5 <1 18/04/2011 233858 I8 Zone 2N BV I 8 2N <10 <5 3 <5 <5 2 08/11/2011 256023 K15 BV K 15 2S <10 <5 3 <5 <5 <1 24/11/2010 219458 L4 L 4 1 4.5 <10 <5 3 <5 <5 <1 08/11/2010 217793 M6 M 6 2N 3.7 <10 <5 3 <5 <5 5 14/05/2010 199157 K8 SV1 K 8 2N <10 23 4 <5 <5 <1 28/06/2010 203772 K7 BV A K 7 2N <10 130 4 <5 <5 <1 28/06/2010 203772 K8 VS K 8 2N <10 150 4 <5 <5 <1 28/06/2010 203772 L7 SV A L 7 2N <10 150 4 <5 <5 <1 28/06/2010 203772 K7 SV A K 7 2N <10 180 4 <5 <5 <1 28/06/2010 203772 L7 SV D L 7 2N <10 210 4 <5 <5 2 19/08/2011 246822 C19 2.0M C 19 2S 2 <10 <5 4 <5 <5 <1 26/08/2010 210115 TP J14 J 14 2S 1 <10 <5 4 <5 <5 3 13/05/2011 236129 L22 L 22 3 3.3m <10 29 5 <5 <5 <1 31/03/2011 232316 K5 SV A (Trial) K 5 1 <10 <5 5 <5 <5 <1 23/11/2010 219461 L6 L 6 2N 4.5 <10 <5 5 <5 <5 2 23/11/2010 219461 M10 M 10 2N 3.5 <10 <5 5 <5 <5 2 28/06/2010 203772 K7 SV B K 7 2N <10 170 6 <5 <5 <1 05/04/2011 232770 K6 Zone 1 BV K 6 1 <10 <5 6 <5 <5 <1 23/11/2010 219456 N3 N 3 1 4.5 <10 <5 6 <5 <5 <1 20/05/2011 237208 L8 trial sample in gault L 8 2N 7.5 <10 <5 7 <5 <5 1 23/11/2010 219461 M11 M 11 2N 4.5 <10 <5 7 <5 <5 5 06/12/2011 259497 M7 TRENCH SVW M 7 2N <10 <5 7 <5 <5 <1 07/11/2011 255889 L14 SVW L 14 2S <10 <5 9 <5 <5 <1 14/07/2010 205640 J8 BV J 8 2N <10 <5 12 <5 <5 <1 24/11/2010 219618 N4 N 4 1 4.5 <10 <5 15 <5 <5 <1 31/08/2011 248120 K5 BV K 5 2N <10 <5 17 <5 <5 <1 24/11/2010 219618 N6 N 6 2N 4.5 <10 <5 26 <5 <5 <1 24/11/2010 219618 N5 N 5 2N 4.5 <10 <5 35 <5 <5 <1 24/11/2010 219618 N7 N 7 2N 4.5 <10 <5 35 <5 <5 <1 09/02/2011 226719 H6 CS H 6 1 <10 <5 41 <5 <5 16 24/11/2010 219618 M7 M 7 2N 4.5 <10 <5 54 <5 <5 <1 31/08/2011 248120 J6 BV J 6 2N <10 <5 56 <5 <5 <1 31/08/2011 248120 I6 BV I 6 2N <10 <5 88 <5 <5 <1 24/11/2010 219619 TPK6 K 6 1 4.57 <10 <5 100 <5 <5 3 18/11/2010 218834 TPI6 I 6 1 4.7 <10 <5 120 <5 <5 7 20/05/2011 237208 L7 trial sample in marl L 7 2N 7.5 <10 15 160 <5 <5 10 20/05/2011 237414 L7 BV 226 576 L 7 2N 4.5 <10 5 <1 <5 <5 <1 07/11/2011 255889 L15 2M L 15 3 2 <10 5 <1 <5 <5 <1 10/11/2011 256346 A18 SVS A 18 1 <10 6 <1 <5 <5 <1 10/11/2011 256349 C17 SVSW C 17 1 <10 6 <1 <5 <5 <1 11/10/2011 252148 F12 SVE F 12 1 <10 6 <1 <5 <5 3 24/08/2010 209399 J13 TP1 J 13 2S 0.5 <10 7 <1 <5 <5 1 01/11/2011 255206 K20 1.5M K 20 3 1.5 <10 7 <1 <5 <5 <1 06/12/2011 259541 M8,L8,L7 0.5 L/M 7/8 2N 0.5 <10 7 <1 <5 <5 <1 24/06/2011 240637 K11 SV K 11 2N <10 9 <1 <5 <5 <1 01/11/2011 255206 K19 2.5M K 19 3 2.5 <10 9 <1 <5 <5 <1 25/10/2011 254129 H20 2.1M H 20 2S 2.1 <10 10 <1 <5 <5 <1 28/10/2011 254858 I19 1.1M (CS) I 19 3 1.1 <10 10 <1 <5 <5 <1 02/11/2011 255406 J20 4.0M (CS) J 20 3 4 <10 10 <1 <5 <5 <1 10/11/2011 256349 B17 SVN B 17 1 <10 12 <1 <5 <5 <1 02/06/2011 238165 L9 BV L 9 2N 4 <10 12 <1 <5 <5 <1 11/10/2011 252148 F12 BV F 12 1 <10 13 <1 <5 <5 1 20/05/2011 237414 K6 BV Drain Box K 6 1 3 <10 13 <1 <5 <5 <1 07/07/2011 242275 J12 SV S J 12 2S <10 14 <1 <5 <5 <1 02/06/2011 238165 J14 BV J 14 2S 3 <10 16 <1 <5 <5 <1 12/09/2011 249095 E18 4.4M F 18 2S 4.4 <10 16 <1 <5 <5 <1 20/05/2011 237414 L8 BV 225 558 L 8 2N 4.5 <10 19 <1 <5 <5 <1 19/10/2011 253608 E19 SVS E 19 2S <10 20 <1 <5 <5 <1 02/06/2011 238165 L8 BV L 8 2N 4 <10 26 <1 <5 <5 <1 11/10/2011 252148 F12 SVW F 12 1 <10 28 <1 <5 <5 <1 08/07/2011 242852 K12 BV K 12 2S <10 29 <1 <5 <5 <1 07/07/2011 242275 J12 SV E J 12 2S <10 30 <1 <5 <5 <1 02/11/2011 255404 H19 3.5M H 19 2S 3.5 <10 34 <1 <5 <5 <1 19/08/2011 246823 D18 2.5M D 18 2S 2.5 <10 36 <1 <5 <5 <1 07/07/2011 242275 J12 SV W J 12 2S <10 36 <1 <5 <5 <1 24/06/2011 240637 K9 BV K 9 2N <10 51 <1 <5 <5 <1 31/08/2011 248299 B20 5.5M B 20 1 5.5 <10 68 <1 <5 <5 <1 01/11/2011 255202 K18 2.0M K 18 3 2 <10 70 <1 <5 <5 <1 08/07/2011 242852 J13 SV S J 13 2S <10 130 <1 <5 <5 <1 31/03/2011 232316 K5 SV B (Trial) K 5 1 <10 <5 <1 <5 <5 <1 09/12/2010 221373 TP F13 F 13 2S 2.3 <10 <5 <1 <5 <5 <1 20/01/2011 224618 F16 A F 16 a 2S 1.4 <10 <5 <1 <5 <5 <1 20/01/2011 224618 F16 B F 16 b 2S 1.2 <10 <5 <1 <5 <5 <1 01/12/2010 220489 TP D16b D 16 b 2S 2.5 <10 <5 <1 <5 <5 <1 05/04/2011 232770 K6 Zone 1 ZN BV K 6 1 <10 <5 <1 <5 <5 <1 10/11/2011 256346 A17 SVE A 17 1 <10 <5 <1 <5 <5 <1 10/11/2011 256346 A17 SVN A 17 1 <10 <5 <1 <5 <5 <1 12/08/2011 246185 B17 2.5M B 17 1 2.5 <10 <5 <1 <5 <5 <1 10/11/2011 256349 B17 BV B 17 1 <10 <5 <1 <5 <5 2 10/11/2011 256349 B17 SVS B 17 1 <10 <5 <1 <5 <5 <1 22/08/2011 247012 B18 4.7 B 18 2S 4.7 <10 <5 <1 <5 <5 <1 22/08/2011 247012 B19 5.2 B 19 2S 5.2 <10 <5 <1 <5 <5 <1 31/08/2011 248299 B21 4.9M B 21 1 4.9 <10 <5 <1 <5 <5 <1 10/11/2011 256349 C17 BV C 17 1 <10 <5 <1 <5 <5 <1 10/11/2011 256349 C17 SVNE C 17 1 <10 <5 <1 <5 <5 <1 19/08/2011 246822 C20 5.5M C 20 2S 5.5 <10 <5 <1 <5 <5 <1 19/08/2011 246823 C21 4.9M C 21 2S 4.9 <10 <5 <1 <5 <5 <1 08/04/2010 195540 C22 C 22 2S 2.2 <10 <5 <1 <5 <5 <1 19/07/2011 243419 C23 4M C 23 1 4 <10 <5 <1 <5 <5 <1 12/04/2010 195723 C24 C 24 1 2.5 <10 <5 <1 <5 <5 <1 12/01/2011 223853 D14 D 14 1 1.45 <10 <5 <1 <5 <5 <1 27/09/2011 251180 D14 BV D 14 1 <10 <5 <1 <5 <5 <1 12/01/2011 223851 D15 B D 15 B 1 2.4 <10 <5 <1 <5 <5 <1 27/09/2011 251180 D15 BV D 15 1 <10 <5 <1 <5 <5 <1 19/08/2011 246822 D19 1.0M D 19 2S 1 <10 <5 <1 <5 <5 <1 12/09/2011 249223 D20 4.9M D 20 2S 4.9 <10 <5 <1 <5 <5 <1 08/09/2011 249227 D21 4.6M D 21 2S 4.6 <10 <5 <1 <5 <5 <1 22/08/2011 247009 D22 4.5 D 22 2S 4.5 <10 <5 <1 <5 <5 <1 21/11/2011 257595 D25 5m D 25 3 5 <10 <5 <1 <5 <5 <1 12/01/2011 223851 E14 B E 14 b 1 2.2 <10 <5 <1 <5 <5 <1 12/01/2011 223853 E15 A E 15 a 1 3.65 <10 <5 <1 <5 <5 <1 12/01/2011 223853 E15 B E 15 b 1 2.6 <10 <5 <1 <5 <5 <1 27/09/2011 251190 E16 BV (CS) E 16 2S <10 <5 <1 <5 <5 <1 12/09/2011 249231 E20 4.7M E 20 2S 4.7 <10 <5 <1 <5 <5 <1 12/09/2011 249223 E21 4.9M E 21 2S 4.9 <10 <5 <1 <5 <5 <1 19/08/2011 246997 E22 4.5M E 22 2S 4.5 <10 <5 <1 <5 <5 <1 23/08/2011 247000 E23 4.5M E 23 3 4.5 <10 <5 <1 <5 <5 <1 12/04/2010 195723 E25 E 25 3 0.7 <10 <5 <1 <5 <5 <1 20/01/2011 224432 F11 F 11 1 <10 <5 <1 <5 <5 <1 20/01/2011 224432 F12 F 12 2S <10 <5 <1 <5 <5 8 11/10/2011 252148 F13 SVE F 13 1 <10 <5 <1 <5 <5 <1 23/09/2011 250748 F14 SV W (CS) F 14 2S <10 <5 <1 <5 <5 <1 24/01/2011 224621 F15 A F 15 a 2S 1.8 <10 <5 <1 <5 <5 <1 24/01/2011 224621 F15 B F 15 b 2S 1.5 <10 <5 <1 <5 <5 <1 23/09/2011 250748 F15 SV S F 15 2S <10 <5 <1 <5 <5 <1 23/09/2011 250748 F15 SV W F 15 2S <10 <5 <1 <5 <5 <1 25/10/2011 254134 F18 2.8M (CS) F 18 2S 2.8 <10 <5 <1 <5 <5 <1 19/10/2011 253603 F19 BV F 19 2S <10 <5 <1 <5 <5 <1 19/10/2011 253603 F19 SVE (CS) F 19 2S <10 <5 <1 <5 <5 <1 19/10/2011 253603 F19 SVN F 19 2S <10 <5 <1 <5 <5 <1 19/10/2011 253603 F19 SVS F 19 2S <10 <5 <1 <5 <5 <1 28/10/2011 254852 F20 3.9M F 20 2S 3.9 <10 <5 <1 <5 <5 <1 25/10/2011 254134 F21 4.0M F 21 2S 4 <10 <5 <1 <5 <5 <1 14/09/2011 249835 F22 4.5 F 22 3 4.5 <10 <5 <1 <5 <5 <1 22/08/2011 247003 F23 4.0M F 23 3 4 <10 <5 <1 <5 <5 <1 14/09/2011 249837 F24 4.5M F 24 3 4.5 <10 <5 <1 <5 <5 <1 12/04/2010 195723 F25 F 25 3 1.5 <10 <5 <1 <5 <5 <1 14/06/2011 239880 G16 SV G 16 2S <10 <5 <1 <5 <5 4 02/11/2011 255401 G19 1.0M G 19 2S 1 <10 <5 <1 <5 <5 <1 25/10/2011 254129 G20 1.0M G 20 2S 1 <10 <5 <1 <5 <5 4 25/10/2011 254129 G21 2.95M G 21 2S 2.95 <10 <5 <1 <5 <5 <1 06/09/2011 248811 G22 2.7M G 22 3 2.7 <10 <5 <1 <5 <5 <1 06/09/2011 248811 G23 2.5M G 23 3 2.5 <10 <5 <1 <5 <5 <1 06/09/2011 248811 G24 2.5M G 24 3 2.5 <10 <5 <1 <5 <5 <1 21/11/2011 257595 G25 1m G 25 3 1 <10 <5 <1 <5 <5 <1 21/04/2010 196655 H15 BV H 15 2S 4.0m <10 <5 <1 <5 <5 <1 13/06/2011 239402 H17 H 17 2S <10 <5 <1 <5 <5 <1 07/10/2011 252167 H21 3.5M H 21 3 3.5 <10 <5 <1 <5 <5 <1 28/09/2011 250856 H22 3.0M H 22 3 3 <10 <5 <1 <5 <5 <1 07/10/2011 252163 H23 2.5M H 23 3 2.5 <10 <5 <1 <5 <5 <1 16/11/2011 257084 H24 (CS) H 24 3 <10 <5 <1 <5 <5 <1 24/06/2011 240637 I10 SV I 10 2N <10 <5 <1 <5 <5 <1 26/09/2011 250862 I15 SVE I 15 2S <10 <5 <1 <5 <5 1 26/09/2011 250862 I16 SVE I 16 2S <10 <5 <1 <5 <5 <1 02/11/2011 255408 I18 3.7M I 18 2S 3.7 <10 <5 <1 <5 <5 <1 07/10/2011 252139 I20 3.5M I 20 3 3.5 <10 <5 <1 <5 <5 <1 11/10/2011 252525 I21 3.9 I 21 3 3.9 <10 <5 <1 <5 <5 <1 11/10/2011 252525 I22 3.1 I 22 3 3.1 <10 <5 <1 <5 <5 <1 27/09/2011 251176 I23 2.6M I 23 3 2.6 <10 <5 <1 <5 <5 <1 16/11/2011 257084 I24 (CS) I 24 3 <10 <5 <1 <5 <5 <1 11/07/2011 242714 I6 WALL I 6 2N <10 <5 <1 <5 <5 <1 31/03/2011 232310 I6 Zone 1 BV I 6 1 <10 <5 <1 <5 <5 <1 31/03/2011 232310 I7 Zone 1 BV I 7 1 <10 <5 <1 <5 <5 <1 31/03/2011 232310 I7 Zone 2N BV I 7 2N <10 <5 <1 <5 <5 <1 08/07/2011 242852 J13 SV W J 13 2S <10 <5 <1 <5 <5 <1 28/10/2011 254852 J17 1.5M J 17 2S 1.5 <10 <5 <1 <5 <5 <1 28/10/2011 254852 J17 2.5M (CS) J 17 2S 2.5 <10 <5 <1 <5 <5 <1 02/11/2011 255408 J18 2.8M J 18 3 2.8 <10 <5 <1 <5 <5 <1 02/11/2011 255406 J19 1.9M J 19 3 1.9 <10 <5 <1 <5 <5 <1 02/11/2011 255406 J19 3.8M (CS) J 19 3 3.8 <10 <5 <1 <5 <5 <1 02/11/2011 255406 J20 2.8M J 20 3 2.8 <10 <5 <1 <5 <5 <1 28/10/2011 254858 J21 2.6M J 21 3 2.6 <10 <5 <1 <5 <5 <1 17/10/2011 252988 J22 2.5M J 22 3 2.5 <10 <5 <1 <5 <5 <1 17/10/2011 252988 J23 2.5M J 23 3 2.5 <10 <5 <1 <5 <5 <1 16/11/2011 257084 J24 (CS) J 24 3 <10 <5 <1 <5 <5 <1 11/07/2011 242714 J6 WALL J 6 1 <10 <5 <1 <5 <5 <1 31/03/2011 232310 J6 Zone 1 BV J 6 1 <10 <5 <1 <5 <5 <1 18/03/2011 230930 J6 Zone 2N BV J 6 2N <10 <5 <1 <5 <5 <1 18/04/2011 233858 J7 Drainage Trench BV J 7 2N <10 <5 <1 <5 <5 <1 18/04/2011 233858 J7 Drainage Trench SV2 J 7 2N <10 <5 <1 <5 <5 <1 23/06/2010 203335 J7 VS J 7 2N <10 <5 <1 <5 <5 <1 11/07/2011 242412 K13 5.4M K 13 2S 5.4 <10 <5 <1 <5 <5 <1 21/04/2010 196655 K14 BV K 14 2S 4.0m <10 <5 <1 <5 <5 <1 19/04/2010 196515 K16 BV 6 K 16 3 <10 <5 <1 <5 <5 <1 01/11/2011 255206 K20 2.5M (CS) K 20 3 2.5 <10 <5 <1 <5 <5 <1 28/10/2011 254855 K21 3.1M K 21 3 3.1 <10 <5 <1 <5 <5 <1 27/09/2011 250882 K22 2.7M K 22 3 2.7 <10 <5 <1 <5 <5 <1 17/10/2011 252988 K23 2.5M K 23 3 2.5 <10 <5 <1 <5 <5 <1 16/11/2011 257084 K24 (CS) K 24 3 <10 <5 <1 <5 <5 <1 11/07/2011 242714 K5 WALL K 5 1 <10 <5 <1 <5 <5 <1 08/11/2011 256029 L10 0.5 L 10 2N 0.5 <10 <5 <1 <5 <5 <1 28/03/2011 231688 L12 L 12 2N 3.2 <10 <5 <1 <5 <5 <1 30/03/2011 232134 L14 L 14 2S 3.4 <10 <5 <1 <5 <5 <1 16/11/2011 257081 L17 (CS) L 17 3 <10 <5 <1 <5 <5 <1

Validation reports colour devided revised SV, BV, TP worksheet B_HB.xlsx/Revised SV, BV, TP validations 9/22 2,6- bis(1,1- 1,2- 1-(2- dimethyle bis(2,4,6- Chloroeth 2(1- thyl)-4-(1- 2,6-bis(1- Vinyl trichlorop oxy)-2-(o- methylpro 2,3,6- 2,4- methylpro methylpro Bis(2- Dichloro 2- Trichlorob Trichloro Dichloro 1- Cyclohex Tetrachlor Trichloroe chloride Xylene henoxy)et Tolyloxy)- pyl)- Trichlorot Dichloro- pyl)- pyl)- ethylhexyl methylph Methylna enzenea methylbe methylbe Methylna Report Column anone oethylene Toluene thylene monomer (Total) hane ethane phenol oluene o-cresol phenol phenol ) maleate enol pthalene Dinoseb mine nzene nzene pthalene Report Date Number BV Reference Row Column Letters Zone Depth µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg 16/11/201107/09/2011 257081249094 F19L18 4.4M(CS) FL 1819 2S3 4.4 <10 <5 <1 <5 <5 <1 16/11/2011 257081 L19 (CS) L 19 3 <10 <5 <1 <5 <5 <1 16/11/2011 257081 L20 (CS) L 20 3 <10 <5 <1 <5 <5 <1 16/11/2011 257081 L21 (CS) L 21 3 <10 <5 <1 <5 <5 <1 08/11/2010 217795 L5 L 5 1 3.5 <10 <5 <1 <5 <5 <1 28/10/2011 254891 L5 SVW L 5 1 <10 <5 <1 <5 <5 <1 06/12/2011 259483 L5 Z1 BV L 5 1 <10 <5 <1 <5 <5 <1 06/12/2011 259483 L5 Z1 SVE L 5 1 <10 <5 <1 <5 <5 <1 06/12/2011 259483 L5 Z1 SVN L 5 1 <10 <5 <1 <5 <5 <1 06/12/2011 259483 L5 Z1 SVW L 5 1 <10 <5 <1 <5 <5 <1 06/12/2011 259483 L5 Z2 SVN L 5 2N <10 <5 <1 <5 <5 <1 13/06/2011 239578 L6 BV 4.0m L 6 2N 4 <10 <5 <1 <5 <5 <1 31/03/2011 232316 L6 SV (Trial) L 6 2N <10 <5 <1 <5 <5 <1 13/06/2011 239578 L7 BV 4.0m L 7 2N 4 <10 <5 <1 <5 <5 <1 08/11/2011 256029 L9 0.5 L 9 2N 0.5 <10 <5 <1 <5 <5 <1 08/11/2010 217795 M4 M 4 1 3.92 <10 <5 <1 <5 <5 <1 08/11/2010 217797 M5 M 5 2N 3.9 <10 <5 <1 <5 <5 <5 08/11/2010 217797 N4 N 4 1 1.5 <10 <5 <1 <5 <5 <5 09/12/2010 221370 TP E12 E 12 1 2.5 <10 <5 <1 <5 <5 <1 09/12/2010 221373 TP E13 E 13 1 2.8 <10 <5 <1 <5 <5 <1 09/12/2010 221370 TP F12 F 12 1 2.3 <10 <5 <1 <5 <5 <1 26/09/2011 250862 I16 SVS I 16 2S <10 <5 <1 <5 <5 <1 30/09/2011 251696 E14 SV WEST E 14 1 <10 <5 <1 <5 <5 <1 14/05/2010 199157 K8 SV2 K 8 2N <100 4700 50 110 <50 <10 30/11/2011 258839 K8 BV 2.4M K 8 2N 2.4 <100 580 980 150 <50 35 15/08/2011 246538 I12 BV I 12 2S <100 <50 <50 160 <50 <10 30/11/2011 258839 L8 GAULT 3.8M L 8 2N 3.8 <100 820 8880 240 <50 33 01/08/2011 244972 H12 SVS H 12 2S <100 <50 <10 470 <50 <10 01/08/2011 244972 H12 SVW H 12 2S <100 290 <10 720 <50 <10 28/07/2010 206893 H10 Trial H 10 2S <100 3900 130 <50 <50 <10 11/10/2011 252148 E13 BV E 13 1 <100 <50 <10 <50 <50 140 17/11/2011 257086 G15 1.68M G 15 2S 1.68 17/11/2011 257086 H15 3.54M H 15 2S 3.54 17/11/2011 257086 H16 3.57M H 16 2S 3.57 24/06/2011 240637 I9 BV I 9 2N 14/07/2010 205640 J7 BV J 7 2N 24/06/2011 240637 K10 BV K 10 2N 11/07/2011 242412 L13 5.4M L 13 2N 5.4 02/09/2011 248595 F12SVE F 12 2S 02/09/2011 248595 F12SVN F 12 2S 02/09/2011 248595 F12SVS F 12 2S 08/07/2010 205069 K7 SV A K 7 2N 08/07/2010 205069 K7 SV B K 7 2N 08/07/2010 205069 L7 SV A L 7 2N 08/07/2010 205069 L7 SV B L 7 2N 08/07/2010 205069 L7 SV C L 7 2N 08/07/2010 205069 L7 SV D L 7 2N 08/07/2010 205069 K7 BV A K 7 2N 08/07/2010 205069 K8 VS K 8 2N 08/07/2010 205069 L7 L 7 2N 10m 08/07/2010 205069 L7 BV A L 7 2N 16/12/2010 221996 TP D16B D 16 b 2S 16/12/2010 221996 TP D17 D 17 2S 16/12/2010 221994 TP E16A E 16 2S

Number of samples 395 392 395 395 395 395 0 3 0 0 0 0 0 0 13 0 0 2 13 1 1 Minimum value 10.00 5.00 1.00 5.00 5.00 1.00 0.00 160.00 0.00 0.00 0.00 0.00 0.00 0.00 100.00 0.00 0.00 240.00 120.00 26000.00 280.00 Maximum value 100.00 91000.00 8880.00 3700.00 62.00 2000.00 0.00 400.00 0.00 0.00 0.00 0.00 0.00 0.00 8750.00 0.00 0.00 900.00 ######## 26000.00 280.00 Second highest value 100.00 34000.00 3200.00 1900.00 50.00 490.00 #NUM! 260.00 #NUM! #NUM! #NUM! #NUM! #NUM! #NUM! 8400.00 #NUM! #NUM! 240.00 19000.00 #NUM! #NUM! 120- 26000- Range 10- 100 5- 91000 1- 8880 5- 3700 5- 62 1- 2000 0- 0 160- 400 0- 0 0- 0 0- 0 0- 0 0- 0 0- 0 100- 8750 0- 0 0- 0 240- 900 120000 26000 280- 280

Average concentration 14.96 708.61 75.61 56.00 7.90 12.42 0.00 273.33 0.00 0.00 0.00 0.00 0.00 0.00 3293.08 0.00 0.00 570.00 13044.62 26000.00 280.00 Number of exceedances 0 32 2 31 395 0 0 3 0 0 0 0 0 0 0 0 0 0 13 1 1 % above assessment criteria 0.00 8.16 0.51 7.85 100.00 0.00 #DIV/0! 100.00 #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! 0.00 #DIV/0! #DIV/0! 0.00 100.00 100.00 100.00 Assessment criteria NA 760.0 3000.0 100.0 0.5 2500.0 5.0 5.0 238000.0 5.0 ######## 238000.0 238000.0 92.8 ######## NA 61.6 NA 5.0 0.5 92.8

Surrogat e SSV Surrogat Source of 2009 e SSV, assessment Not Atkins Atkins Atkins Hauxton Practicab Practicab Derived Practicab Derived Derived Derived (benzene Derived Not HH CNPI Not Practical Vinyl Derived criteria volatile SSV SGV SSV SSV SSV le LOD le LOD SSV le LOD SSV SSV SSV ) SSV priority GAC Volatile LOD chloride SSV Notes Coloured text from original spreadsh hb eet Across different zones informatio n enetered for zone area

Validation reports colour devided revised SV, BV, TP worksheet B_HB.xlsx/Revised SV, BV, TP validations 10/22 Revised SV, BV, TP validation samples assessment

Unidentifi Mixed ed Trichloro( isomers DDD,DDE Dimethyln chloromet Trichloron Oxathian of DDD Benzo(b/k and DDT Dichlorot aphthalen Trichlorob hyl)benze itrobenze Acenapht Phenanth Fluoranth e 4,4- Naphthal DDE and )fluoranth compoun Report Column oluene Prochloraz Indane Nicotine e Aldrin Dieldrin DDT enzene ne ne hene Fluorene rene ene Pyrene dioxide ene DDT ene ds Report Date Number BV Reference Row Column Letters Zone Depth µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg 07/09/2011 249094 F19 4.4M F 19 2S 4.4 9600 13000 13000 5000 19/10/2011 253608 E19 SVE E 19 2S 550 24/06/2011 240637 J10 SV J 10 2N 700 24/06/2011 240637 J10 BV J 10 2N 900 19/10/2011 253608 E19 BV E 19 2S 1070 14/09/2011 249465 I13 BV I 13 2S 07/07/2011 242275 J11 SV E J 11 2S 07/07/2011 242275 J11 BV J 11 2S 19/10/2011 253608 E19 SVN E 19 2S 14/09/2011 249465 H13 BV H 13 2S 27/04/2011 235158 J10 BV J 10 2N 27/04/2011 235158 I9 BV I 9 2N 15/07/2011 243421 I11 SVS I 11 2N 15/07/2011 243421 I11 SVE I 11 2N 15/07/2011 243421 I11 BV I 11 2N 08/07/2011 242852 K11BV K 11 2N 14/06/2011 239880 G16 BV G 16 2S 16/06/2011 240124 I17 I 17 2S 3.4 24/05/2010 199763 J7 BV J 7 2N 28/10/2011 254891 F11 SVE F 11 1 08/11/2010 217789 M8 M 8 2N 3.7 06/06/2011 238884 L7 Marl SW L 7 2N 20/01/2011 224432 F13 F 13 1 11/07/2011 242714 H9 WALL H 9 2N 14/06/2011 239880 H16 SV H 16 2S 11/07/2011 242714 H8 WALL H 8 2N 06/07/2011 242153 L9 SV W L 9 2N 24/08/2010 209399 J13 TP2 J 13 2S 2.2 15/09/2010 211994 H14 Trial BV H 14 2S 27/09/2011 251190 C16 BV (CS) C 16 1 9300 06/12/2011 259469 M8 BV M 8 2N 01/08/2011 244972 H12 BV L H 12 2S 11/05/2011 236127 K10 K 10 2N 2m 08/09/2011 248818 K5 BV 2.8M K 5 1 2.8 20/01/2011 224432 E13 E 13 1 24/05/2010 199763 J8 J 8 2N 19/09/2011 250154 G15 BV G 15 2S 28/07/2010 206893 I10 Trial I 10 2N 11/05/2011 236127 I9 I 9 2N 2m 13/05/2010 198957 L7 BV L 7 2N 01/08/2011 244972 H12 BV U H 12 2S 19/09/2011 250154 G14 BV G 14 2S 03/08/2011 245225 G11 BV G 11 2S 01/08/2011 244975 I10 BV I 10 2N 08/09/2011 248818 L5 BV 2.8M L 5 1 2.8 30/08/2011 248118 G8 BV G 8 2N 30/08/2011 248118 H7 BV H 7 2N 13/05/2010 198957 K7 BV2 K 7 2N 06/12/2011 259541 L6 3.0 L 6 2N 3 01/08/2011 244972 H12 SVE H 12 2S 01/08/2011 244975 H10 BV H 10 2S 01/08/2011 244975 H11 BV H 11 2S 31/08/2011 248299 B22 6.0M B 22 1 6 20/01/2011 224432 E12 E 12 1 06/12/2011 259478 L5 ZONE 2 4.0M L 5 2N 4 30/11/2011 258839 L8 SVW 2.2M L 8 2N 2.2 06/12/2011 259497 M7 TRENCH BV M 7 2N 06/12/2011 259469 M8 SV W M 8 2N 06/12/2011 259469 M9 BV M 9 2N 06/12/2011 259469 M9 SV W M 9 2N 08/09/2010 211302 I15 Trial BV I 15 2S 12/08/2010 208691 J13 Trial BV Sample J 13 2S 07/07/2011 242275 K12 K 12 2S 18/04/2011 233858 K8 Zone 2N BV K 8 2N 14/06/2011 239880 H16 BV H 16 2S 15/07/2011 243421 I12 SVS I 12 2S 03/08/2011 245225 G11 SVE G 11 2S 31/08/2011 248300 E17 5M E 17 2S 5 01/12/2010 220489 TP D16a D 16 a 2S 2.5 07/07/2011 242275 J12 BV J 12 2S 21/07/2010 206314 L8 BV L 8 2N 30/08/2011 248118 G10 BV G 10 1 03/08/2011 245225 G12 SVE G 12 2S 01/08/2011 244975 I11 BV I 11 2S 23/09/2011 250748 F15 TRENCH F 15 2S 30/09/2011 251696 E14 BV E 14 1 14/05/2010 199157 K7 TBV K 7 2N 07/11/2011 255889 L15 SVW L 15 3 02/11/2011 255401 G19 2.5M (CS) G 19 2S 2.5 12/01/2011 223851 E14 A E 14 a 1 2.4 25/10/2011 254335 F17 3.9M F 17 2S 3.9 15/07/2011 243421 I10 SVE I 10 2N 13/06/2011 239401 K15 Pile Base K 15 2S 01/12/2010 220493 TP E16a E 16 a 2S 2.5 5m from top of 13/05/2011 236575 K9 trial sample in gault K 9 2N gault 30/09/2011 251696 C15 BV C 15 1 30/06/2011 241798 I8 B BV I 8 2N 23/09/2011 250748 F15 BV F 15 2S 28/10/2011 254891 L5 BV L 5 1 30/08/2011 248118 G9 BV G 9 1 12/04/2010 195725 K16 K 16 3 2.9 14/05/2010 199157 K7 SV1 K 7 2N 8m from top of 13/05/2011 236575 J9 trail sample in gault J 9 2N gault 02/06/2011 238165 I14 BV I 14 2S 3 08/11/2010 217800 M9 M 9 2N 3.4 14/05/2010 199157 K7 SV2 K 7 2N 05/07/2010 204070 I8 BV I 8 2N 12/08/2010 208691 K13 Trial BV Sample K 13 2S 07/10/2011 252135 F16 2.65M F 16 2S 2.65 28/10/2011 254855 G17 3.1M (CS) G 17 2S 3.1 01/12/2010 220493 TP E17 E 17 2S 2 02/11/2011 255404 H18 3.5M H 18 2S 3.5 01/08/2011 244975 I12 SVE I 12 2S 06/12/2011 259497 M7 TRENCH SVE M 7 2N 26/09/2011 250862 I16 BV (CS) I 16 2S 15/07/2011 243421 I12 SVE I 12 2S 01/11/2011 255202 K17 2.5M K 17 3 2.5 24/08/2010 209399 J12 TP1 J 12 2S 1.8 18/04/2011 233858 J7 Zone 2N BV J 7 2N 28/06/2010 203772 L7 SV B L 7 2N 27/04/2011 234979 J8 2 BV J 8 2N 12/01/2011 223851 D15 A D 15 A 1 2.45 20/04/2011 234538 L8 TP L 8 2N 0.6 30/06/2011 241798 H8 2N BV H 8 2N 27/09/2011 251180 E15 BV E 15 1 19/09/2011 250154 G14 SV E 2 G 14 2S 19/09/2011 250154 G14 SV E 1 G 14 2S 27/04/2011 234979 K8 2 BV K 8 2N 13/05/2011 236129 L10 BV L 10 2N 30/06/2011 241798 H9 2N BV H 9 2N 06/06/2011 238884 H14 SV Trench H 14 2S 14/06/2011 239880 H15 BV H 15 2S 0.5m from top 13/05/2011 236575 I9 trial sample in gault I 9 2N of gault 10/11/2011 256349 C17 SVN C 17 1 02/11/2011 255401 G18 3.5M G 18 2S 3.5 01/12/2010 220489 TP D17 D 17 2S 3 29/10/2010 216821 H17 H 17 2S 2 11/10/2011 252148 G11 BV G 11 1 19/09/2011 250160 D24 5.5M D 24 3 5.5 19/09/2011 250154 G15 SV E G 15 2S 27/04/2011 235158 K10 BV K 10 2N 4m from top of 13/05/2011 236575 L9 trail sample in gault L 9 2N gault 27/04/2011 234979 K7 FACE VALIDATION K 7 2N 28/10/2011 254891 L5 SVN L 5 1 19/09/2011 250160 D23 5.5M D 23 3 5.5 14/05/2010 199157 K8 TBV K 8 2N 27/04/2011 235158 J9 BV J 9 2N 19/09/2011 250160 E24 5.5M E 24 3 5.5 06/06/2011 238884 H14 SV2 Trench H 14 2S 15/09/2010 211994 H14 H 14 2S 0.5 28/06/2010 203772 L7 L 7 2N 10m 11/05/2011 236127 J10 J 10 2N 2m 19/09/2011 250156 G10 BV 2S G 10 1 18/03/2011 230930 I6 Zone 2N BV I 6 2N 31/03/2011 232310 J7 Zone 2N BV J 7 2N 19/09/2011 250156 G12 BV 2S G 12 2S 06/07/2011 242153 L10 SV W L 10 2N 03/08/2011 245228 G8 BV G 8 1 03/08/2011 245228 H7 BV H 7 1 19/09/2011 250156 G9 BV 2S G 9 1 19/09/2011 250156 G11 BV 2S G 11 1 28/10/2011 254891 F11 BV F 11 1 03/08/2011 245225 G12 BV G 12 2S 16/07/2010 205918 L11 BV L 11 2N 08/07/2011 242852 J13 SV E J 13 2S 13/06/2011 239401 K14 Pile Base K 14 2S 08/07/2011 242852 K12 SV SW K 12 2S 18/04/2011 233858 K7 Zone 2N BV K 7 2N 09/12/2010 221370 TP F11 F 11 1 2.8 11/10/2011 252148 E13 SVE E 13 1 03/08/2011 245225 G13 SVE G 13 2S 26/08/2010 210115 J14 Trial BV J 14 2S 18/04/2011 233858 J7 Drainage Trench SV J 7 2N 18/04/2011 233858 J8 Zone 2N BV J 8 2N 06/06/2011 237754 L8 Sidewall Validation L 8 2N 26/09/2011 250862 I15 BV I 15 2S 06/06/2011 237754 L7 Sidewall Validation L 7 2N 08/07/2011 242852 J13 BV J 13 2S 29/06/2011 241566 L10B BV L 10 2N 06/06/2011 238884 L6 Marl SW L 6 2N 23/09/2011 250748 G13 BV G 13 2S 14/04/2010 195983 BV J16 J 16 2S 18/04/2011 233858 J7 Drainage Trench BV2 J 7 2N 12/04/2010 195725 K15 K 15 2S 2.7 14/07/2010 205640 L10 Trial L 10 2N 07/11/2011 255890 M5 WELL BASE M 5 2N 01/12/2010 220493 TP E16b E 16 b 2S 2.5 06/06/2011 238884 L8 Marl SW L 8 2N 28/06/2010 203772 L7 BV A L 7 2N 28/06/2010 203772 L7 SV C L 7 2N

Validation reports colour devided revised SV, BV, TP worksheet B_HB.xlsx/Revised SV, BV, TP validations 11/22 Unidentifi Mixed ed Trichloro( isomers DDD,DDE Dimethyln chloromet Trichloron Oxathian of DDD Benzo(b/k and DDT Dichlorot aphthalen Trichlorob hyl)benze itrobenze Acenapht Phenanth Fluoranth e 4,4- Naphthal DDE and )fluoranth compoun Report Column oluene Prochloraz Indane Nicotine e Aldrin Dieldrin DDT enzene ne ne hene Fluorene rene ene Pyrene dioxide ene DDT ene ds Report Date Number BV Reference Row Column Letters Zone Depth µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg 19/08/201107/09/2011 246822249094 B20F19 4.4M1.6M BF 2019 2S 1.64.4 18/04/2011 233858 I8 Zone 2N BV I 8 2N 08/11/2011 256023 K15 BV K 15 2S 24/11/2010 219458 L4 L 4 1 4.5 08/11/2010 217793 M6 M 6 2N 3.7 14/05/2010 199157 K8 SV1 K 8 2N 28/06/2010 203772 K7 BV A K 7 2N 28/06/2010 203772 K8 VS K 8 2N 28/06/2010 203772 L7 SV A L 7 2N 28/06/2010 203772 K7 SV A K 7 2N 28/06/2010 203772 L7 SV D L 7 2N 19/08/2011 246822 C19 2.0M C 19 2S 2 26/08/2010 210115 TP J14 J 14 2S 1 13/05/2011 236129 L22 L 22 3 3.3m 31/03/2011 232316 K5 SV A (Trial) K 5 1 23/11/2010 219461 L6 L 6 2N 4.5 23/11/2010 219461 M10 M 10 2N 3.5 28/06/2010 203772 K7 SV B K 7 2N 05/04/2011 232770 K6 Zone 1 BV K 6 1 23/11/2010 219456 N3 N 3 1 4.5 20/05/2011 237208 L8 trial sample in gault L 8 2N 7.5 23/11/2010 219461 M11 M 11 2N 4.5 06/12/2011 259497 M7 TRENCH SVW M 7 2N 07/11/2011 255889 L14 SVW L 14 2S 14/07/2010 205640 J8 BV J 8 2N 24/11/2010 219618 N4 N 4 1 4.5 31/08/2011 248120 K5 BV K 5 2N 24/11/2010 219618 N6 N 6 2N 4.5 24/11/2010 219618 N5 N 5 2N 4.5 24/11/2010 219618 N7 N 7 2N 4.5 09/02/2011 226719 H6 CS H 6 1 24/11/2010 219618 M7 M 7 2N 4.5 31/08/2011 248120 J6 BV J 6 2N 31/08/2011 248120 I6 BV I 6 2N 24/11/2010 219619 TPK6 K 6 1 4.57 18/11/2010 218834 TPI6 I 6 1 4.7 20/05/2011 237208 L7 trial sample in marl L 7 2N 7.5 20/05/2011 237414 L7 BV 226 576 L 7 2N 4.5 07/11/2011 255889 L15 2M L 15 3 2 10/11/2011 256346 A18 SVS A 18 1 10/11/2011 256349 C17 SVSW C 17 1 11/10/2011 252148 F12 SVE F 12 1 24/08/2010 209399 J13 TP1 J 13 2S 0.5 01/11/2011 255206 K20 1.5M K 20 3 1.5 06/12/2011 259541 M8,L8,L7 0.5 L/M 7/8 2N 0.5 24/06/2011 240637 K11 SV K 11 2N 01/11/2011 255206 K19 2.5M K 19 3 2.5 25/10/2011 254129 H20 2.1M H 20 2S 2.1 28/10/2011 254858 I19 1.1M (CS) I 19 3 1.1 02/11/2011 255406 J20 4.0M (CS) J 20 3 4 10/11/2011 256349 B17 SVN B 17 1 02/06/2011 238165 L9 BV L 9 2N 4 11/10/2011 252148 F12 BV F 12 1 20/05/2011 237414 K6 BV Drain Box K 6 1 3 07/07/2011 242275 J12 SV S J 12 2S 02/06/2011 238165 J14 BV J 14 2S 3 12/09/2011 249095 E18 4.4M F 18 2S 4.4 20/05/2011 237414 L8 BV 225 558 L 8 2N 4.5 19/10/2011 253608 E19 SVS E 19 2S 02/06/2011 238165 L8 BV L 8 2N 4 11/10/2011 252148 F12 SVW F 12 1 08/07/2011 242852 K12 BV K 12 2S 07/07/2011 242275 J12 SV E J 12 2S 02/11/2011 255404 H19 3.5M H 19 2S 3.5 19/08/2011 246823 D18 2.5M D 18 2S 2.5 07/07/2011 242275 J12 SV W J 12 2S 24/06/2011 240637 K9 BV K 9 2N 31/08/2011 248299 B20 5.5M B 20 1 5.5 01/11/2011 255202 K18 2.0M K 18 3 2 08/07/2011 242852 J13 SV S J 13 2S 31/03/2011 232316 K5 SV B (Trial) K 5 1 09/12/2010 221373 TP F13 F 13 2S 2.3 20/01/2011 224618 F16 A F 16 a 2S 1.4 20/01/2011 224618 F16 B F 16 b 2S 1.2 01/12/2010 220489 TP D16b D 16 b 2S 2.5 05/04/2011 232770 K6 Zone 1 ZN BV K 6 1 10/11/2011 256346 A17 SVE A 17 1 10/11/2011 256346 A17 SVN A 17 1 12/08/2011 246185 B17 2.5M B 17 1 2.5 10/11/2011 256349 B17 BV B 17 1 10/11/2011 256349 B17 SVS B 17 1 22/08/2011 247012 B18 4.7 B 18 2S 4.7 22/08/2011 247012 B19 5.2 B 19 2S 5.2 31/08/2011 248299 B21 4.9M B 21 1 4.9 10/11/2011 256349 C17 BV C 17 1 10/11/2011 256349 C17 SVNE C 17 1 19/08/2011 246822 C20 5.5M C 20 2S 5.5 19/08/2011 246823 C21 4.9M C 21 2S 4.9 08/04/2010 195540 C22 C 22 2S 2.2 19/07/2011 243419 C23 4M C 23 1 4 12/04/2010 195723 C24 C 24 1 2.5 12/01/2011 223853 D14 D 14 1 1.45 27/09/2011 251180 D14 BV D 14 1 12/01/2011 223851 D15 B D 15 B 1 2.4 27/09/2011 251180 D15 BV D 15 1 19/08/2011 246822 D19 1.0M D 19 2S 1 12/09/2011 249223 D20 4.9M D 20 2S 4.9 08/09/2011 249227 D21 4.6M D 21 2S 4.6 22/08/2011 247009 D22 4.5 D 22 2S 4.5 21/11/2011 257595 D25 5m D 25 3 5 12/01/2011 223851 E14 B E 14 b 1 2.2 12/01/2011 223853 E15 A E 15 a 1 3.65 12/01/2011 223853 E15 B E 15 b 1 2.6 27/09/2011 251190 E16 BV (CS) E 16 2S 12/09/2011 249231 E20 4.7M E 20 2S 4.7 12/09/2011 249223 E21 4.9M E 21 2S 4.9 19/08/2011 246997 E22 4.5M E 22 2S 4.5 23/08/2011 247000 E23 4.5M E 23 3 4.5 12/04/2010 195723 E25 E 25 3 0.7 20/01/2011 224432 F11 F 11 1 20/01/2011 224432 F12 F 12 2S 11/10/2011 252148 F13 SVE F 13 1 23/09/2011 250748 F14 SV W (CS) F 14 2S 24/01/2011 224621 F15 A F 15 a 2S 1.8 24/01/2011 224621 F15 B F 15 b 2S 1.5 23/09/2011 250748 F15 SV S F 15 2S 23/09/2011 250748 F15 SV W F 15 2S 25/10/2011 254134 F18 2.8M (CS) F 18 2S 2.8 19/10/2011 253603 F19 BV F 19 2S 19/10/2011 253603 F19 SVE (CS) F 19 2S 19/10/2011 253603 F19 SVN F 19 2S 19/10/2011 253603 F19 SVS F 19 2S 28/10/2011 254852 F20 3.9M F 20 2S 3.9 25/10/2011 254134 F21 4.0M F 21 2S 4 14/09/2011 249835 F22 4.5 F 22 3 4.5 22/08/2011 247003 F23 4.0M F 23 3 4 14/09/2011 249837 F24 4.5M F 24 3 4.5 12/04/2010 195723 F25 F 25 3 1.5 14/06/2011 239880 G16 SV G 16 2S 02/11/2011 255401 G19 1.0M G 19 2S 1 25/10/2011 254129 G20 1.0M G 20 2S 1 25/10/2011 254129 G21 2.95M G 21 2S 2.95 06/09/2011 248811 G22 2.7M G 22 3 2.7 06/09/2011 248811 G23 2.5M G 23 3 2.5 06/09/2011 248811 G24 2.5M G 24 3 2.5 21/11/2011 257595 G25 1m G 25 3 1 21/04/2010 196655 H15 BV H 15 2S 4.0m 13/06/2011 239402 H17 H 17 2S 07/10/2011 252167 H21 3.5M H 21 3 3.5 28/09/2011 250856 H22 3.0M H 22 3 3 07/10/2011 252163 H23 2.5M H 23 3 2.5 16/11/2011 257084 H24 (CS) H 24 3 24/06/2011 240637 I10 SV I 10 2N 26/09/2011 250862 I15 SVE I 15 2S 26/09/2011 250862 I16 SVE I 16 2S 02/11/2011 255408 I18 3.7M I 18 2S 3.7 07/10/2011 252139 I20 3.5M I 20 3 3.5 11/10/2011 252525 I21 3.9 I 21 3 3.9 11/10/2011 252525 I22 3.1 I 22 3 3.1 27/09/2011 251176 I23 2.6M I 23 3 2.6 16/11/2011 257084 I24 (CS) I 24 3 11/07/2011 242714 I6 WALL I 6 2N 31/03/2011 232310 I6 Zone 1 BV I 6 1 31/03/2011 232310 I7 Zone 1 BV I 7 1 31/03/2011 232310 I7 Zone 2N BV I 7 2N 08/07/2011 242852 J13 SV W J 13 2S 28/10/2011 254852 J17 1.5M J 17 2S 1.5 28/10/2011 254852 J17 2.5M (CS) J 17 2S 2.5 02/11/2011 255408 J18 2.8M J 18 3 2.8 02/11/2011 255406 J19 1.9M J 19 3 1.9 02/11/2011 255406 J19 3.8M (CS) J 19 3 3.8 02/11/2011 255406 J20 2.8M J 20 3 2.8 28/10/2011 254858 J21 2.6M J 21 3 2.6 17/10/2011 252988 J22 2.5M J 22 3 2.5 17/10/2011 252988 J23 2.5M J 23 3 2.5 16/11/2011 257084 J24 (CS) J 24 3 11/07/2011 242714 J6 WALL J 6 1 31/03/2011 232310 J6 Zone 1 BV J 6 1 18/03/2011 230930 J6 Zone 2N BV J 6 2N 18/04/2011 233858 J7 Drainage Trench BV J 7 2N 18/04/2011 233858 J7 Drainage Trench SV2 J 7 2N 23/06/2010 203335 J7 VS J 7 2N 11/07/2011 242412 K13 5.4M K 13 2S 5.4 21/04/2010 196655 K14 BV K 14 2S 4.0m 19/04/2010 196515 K16 BV 6 K 16 3 01/11/2011 255206 K20 2.5M (CS) K 20 3 2.5 28/10/2011 254855 K21 3.1M K 21 3 3.1 27/09/2011 250882 K22 2.7M K 22 3 2.7 17/10/2011 252988 K23 2.5M K 23 3 2.5 16/11/2011 257084 K24 (CS) K 24 3 11/07/2011 242714 K5 WALL K 5 1 08/11/2011 256029 L10 0.5 L 10 2N 0.5 28/03/2011 231688 L12 L 12 2N 3.2 30/03/2011 232134 L14 L 14 2S 3.4 16/11/2011 257081 L17 (CS) L 17 3

Validation reports colour devided revised SV, BV, TP worksheet B_HB.xlsx/Revised SV, BV, TP validations 12/22 Unidentifi Mixed ed Trichloro( isomers DDD,DDE Dimethyln chloromet Trichloron Oxathian of DDD Benzo(b/k and DDT Dichlorot aphthalen Trichlorob hyl)benze itrobenze Acenapht Phenanth Fluoranth e 4,4- Naphthal DDE and )fluoranth compoun Report Column oluene Prochloraz Indane Nicotine e Aldrin Dieldrin DDT enzene ne ne hene Fluorene rene ene Pyrene dioxide ene DDT ene ds Report Date Number BV Reference Row Column Letters Zone Depth µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg 16/11/201107/09/2011 257081249094 F19L18 4.4M(CS) FL 1819 2S3 4.4 16/11/2011 257081 L19 (CS) L 19 3 16/11/2011 257081 L20 (CS) L 20 3 16/11/2011 257081 L21 (CS) L 21 3 08/11/2010 217795 L5 L 5 1 3.5 28/10/2011 254891 L5 SVW L 5 1 06/12/2011 259483 L5 Z1 BV L 5 1 06/12/2011 259483 L5 Z1 SVE L 5 1 06/12/2011 259483 L5 Z1 SVN L 5 1 06/12/2011 259483 L5 Z1 SVW L 5 1 06/12/2011 259483 L5 Z2 SVN L 5 2N 13/06/2011 239578 L6 BV 4.0m L 6 2N 4 31/03/2011 232316 L6 SV (Trial) L 6 2N 13/06/2011 239578 L7 BV 4.0m L 7 2N 4 08/11/2011 256029 L9 0.5 L 9 2N 0.5 08/11/2010 217795 M4 M 4 1 3.92 08/11/2010 217797 M5 M 5 2N 3.9 08/11/2010 217797 N4 N 4 1 1.5 09/12/2010 221370 TP E12 E 12 1 2.5 09/12/2010 221373 TP E13 E 13 1 2.8 09/12/2010 221370 TP F12 F 12 1 2.3 26/09/2011 250862 I16 SVS I 16 2S 30/09/2011 251696 E14 SV WEST E 14 1 14/05/2010 199157 K8 SV2 K 8 2N 30/11/2011 258839 K8 BV 2.4M K 8 2N 2.4 15/08/2011 246538 I12 BV I 12 2S 30/11/2011 258839 L8 GAULT 3.8M L 8 2N 3.8 01/08/2011 244972 H12 SVS H 12 2S 01/08/2011 244972 H12 SVW H 12 2S 28/07/2010 206893 H10 Trial H 10 2S 11/10/2011 252148 E13 BV E 13 1 17/11/2011 257086 G15 1.68M G 15 2S 1.68 17/11/2011 257086 H15 3.54M H 15 2S 3.54 17/11/2011 257086 H16 3.57M H 16 2S 3.57 24/06/2011 240637 I9 BV I 9 2N 14/07/2010 205640 J7 BV J 7 2N 24/06/2011 240637 K10 BV K 10 2N 11/07/2011 242412 L13 5.4M L 13 2N 5.4 02/09/2011 248595 F12SVE F 12 2S 02/09/2011 248595 F12SVN F 12 2S 02/09/2011 248595 F12SVS F 12 2S 08/07/2010 205069 K7 SV A K 7 2N 08/07/2010 205069 K7 SV B K 7 2N 08/07/2010 205069 L7 SV A L 7 2N 08/07/2010 205069 L7 SV B L 7 2N 08/07/2010 205069 L7 SV C L 7 2N 08/07/2010 205069 L7 SV D L 7 2N 08/07/2010 205069 K7 BV A K 7 2N 08/07/2010 205069 K8 VS K 8 2N 08/07/2010 205069 L7 L 7 2N 10m 08/07/2010 205069 L7 BV A L 7 2N 16/12/2010 221996 TP D16B D 16 b 2S 16/12/2010 221996 TP D17 D 17 2S 16/12/2010 221994 TP E16A E 16 2S

Number of samples 5 0 0 0 0 0 0 0 1 1 1 0 0 0 0 0 0 0 1 0 0 Minimum value 550.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 13000.00 13000.00 5000.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 9300.00 0.00 0.00 Maximum value 9600.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 13000.00 13000.00 5000.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 9300.00 0.00 0.00 Second highest value 1070.00 #NUM! #NUM! #NUM! #NUM! #NUM! #NUM! #NUM! #NUM! #NUM! #NUM! #NUM! #NUM! #NUM! #NUM! #NUM! #NUM! #NUM! #NUM! #NUM! #NUM! 13000- 13000- 5000- 9300- Range 550- 9600 0- 0 0- 0 0- 0 0- 0 0- 0 0- 0 0- 0 13000 13000 5000 0- 0 0- 0 0- 0 0- 0 0- 0 0- 0 0- 0 9300 0- 0 0- 0

Average concentration 2564.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 13000.00 13000.00 5000.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 9300.00 0.00 0.00 Number of exceedances 5 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 % above assessment criteria 100.00 #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! 100.00 0.00 0.00 #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! 0.00 #DIV/0! #DIV/0! Assessment criteria 0.5 22300000 NA 156000.0 4400.0 NA NA NA 1500.0 - - NA NA NA NA NA 92.8 4400.0 932000.0 NA 932000.0

Surrogat Surrogat e 2006 Surrogat e 2006 Surrogat Atkins Source of e SSV, SSV e SSV, SSV Atkins assessment Vinyl Derived TPH Derived (Naphtha Not Not Not Chlorben Not Not Not Not Not (benzene Atkins SSV for Not Derived criteria chloride SSV CWG SSV lene) volatile volatile volatile zene - - volatile volatile volatile volatile volatile ) SSV DDD volatile SSV Notes Coloured text from original spreadsh hb eet Across different zones informatio n enetered for zone area

Validation reports colour devided revised SV, BV, TP worksheet B_HB.xlsx/Revised SV, BV, TP validations 13/22 Revised SV, BV, TP validation samples assessment

Unidentifi Unidentifi ed Unidentifi ed Unidentifi Unidentifi aromatic ed aromatic ed ed hydrocarb aromatic hydrocarb Meta/Par branched branched on amine on 2- a aromatic aromatic containin containin containin 2- 1,2- Cycloocto 1,2,4- 2- 2,3- chloroben 2- Ethyltolue TPH (C8- Mangane alcohol alcohol g CI circa Ethofume g CI circa g O circa methylph dichlorob atomic trichlorob chlorotolu dichloroto zenemeth chloroben Report Column ne C14) Copper Lead se Nickel Zinc circa C14 circa C18 C18 sate C11 C16-18 enol enzene sulphur enzene ene luene anol zalazine Report Date Number BV Reference Row Column Letters Zone Depth µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg 07/09/2011 249094 F19 4.4M F 19 2S 4.4 19/10/2011 253608 E19 SVE E 19 2S 24/06/2011 240637 J10 SV J 10 2N 24/06/2011 240637 J10 BV J 10 2N 19/10/2011 253608 E19 BV E 19 2S 14/09/2011 249465 I13 BV I 13 2S 07/07/2011 242275 J11 SV E J 11 2S 07/07/2011 242275 J11 BV J 11 2S 19/10/2011 253608 E19 SVN E 19 2S 14/09/2011 249465 H13 BV H 13 2S 27/04/2011 235158 J10 BV J 10 2N 27/04/2011 235158 I9 BV I 9 2N 15/07/2011 243421 I11 SVS I 11 2N 15/07/2011 243421 I11 SVE I 11 2N 15/07/2011 243421 I11 BV I 11 2N 08/07/2011 242852 K11BV K 11 2N 14/06/2011 239880 G16 BV G 16 2S 16/06/2011 240124 I17 I 17 2S 3.4 24/05/2010 199763 J7 BV J 7 2N 28/10/2011 254891 F11 SVE F 11 1 08/11/2010 217789 M8 M 8 2N 3.7 11000 06/06/2011 238884 L7 Marl SW L 7 2N 20/01/2011 224432 F13 F 13 1 11/07/2011 242714 H9 WALL H 9 2N 14/06/2011 239880 H16 SV H 16 2S 11/07/2011 242714 H8 WALL H 8 2N 06/07/2011 242153 L9 SV W L 9 2N 24/08/2010 209399 J13 TP2 J 13 2S 2.2 15/09/2010 211994 H14 Trial BV H 14 2S 27/09/2011 251190 C16 BV (CS) C 16 1 06/12/2011 259469 M8 BV M 8 2N 01/08/2011 244972 H12 BV L H 12 2S 11/05/2011 236127 K10 K 10 2N 2m 08/09/2011 248818 K5 BV 2.8M K 5 1 2.8 20/01/2011 224432 E13 E 13 1 24/05/2010 199763 J8 J 8 2N 19/09/2011 250154 G15 BV G 15 2S 28/07/2010 206893 I10 Trial I 10 2N 11/05/2011 236127 I9 I 9 2N 2m 13/05/2010 198957 L7 BV L 7 2N 01/08/2011 244972 H12 BV U H 12 2S 19/09/2011 250154 G14 BV G 14 2S 03/08/2011 245225 G11 BV G 11 2S 01/08/2011 244975 I10 BV I 10 2N 08/09/2011 248818 L5 BV 2.8M L 5 1 2.8 30/08/2011 248118 G8 BV G 8 2N 30/08/2011 248118 H7 BV H 7 2N 13/05/2010 198957 K7 BV2 K 7 2N 06/12/2011 259541 L6 3.0 L 6 2N 3 01/08/2011 244972 H12 SVE H 12 2S 01/08/2011 244975 H10 BV H 10 2S 01/08/2011 244975 H11 BV H 11 2S 31/08/2011 248299 B22 6.0M B 22 1 6 20/01/2011 224432 E12 E 12 1 06/12/2011 259478 L5 ZONE 2 4.0M L 5 2N 4 30/11/2011 258839 L8 SVW 2.2M L 8 2N 2.2 06/12/2011 259497 M7 TRENCH BV M 7 2N 06/12/2011 259469 M8 SV W M 8 2N 06/12/2011 259469 M9 BV M 9 2N 06/12/2011 259469 M9 SV W M 9 2N 08/09/2010 211302 I15 Trial BV I 15 2S 12/08/2010 208691 J13 Trial BV Sample J 13 2S 07/07/2011 242275 K12 K 12 2S 18/04/2011 233858 K8 Zone 2N BV K 8 2N 14/06/2011 239880 H16 BV H 16 2S 15/07/2011 243421 I12 SVS I 12 2S 03/08/2011 245225 G11 SVE G 11 2S 31/08/2011 248300 E17 5M E 17 2S 5 01/12/2010 220489 TP D16a D 16 a 2S 2.5 07/07/2011 242275 J12 BV J 12 2S 21/07/2010 206314 L8 BV L 8 2N 30/08/2011 248118 G10 BV G 10 1 03/08/2011 245225 G12 SVE G 12 2S 01/08/2011 244975 I11 BV I 11 2S 23/09/2011 250748 F15 TRENCH F 15 2S 30/09/2011 251696 E14 BV E 14 1 14/05/2010 199157 K7 TBV K 7 2N 07/11/2011 255889 L15 SVW L 15 3 02/11/2011 255401 G19 2.5M (CS) G 19 2S 2.5 12/01/2011 223851 E14 A E 14 a 1 2.4 25/10/2011 254335 F17 3.9M F 17 2S 3.9 15/07/2011 243421 I10 SVE I 10 2N 13/06/2011 239401 K15 Pile Base K 15 2S 01/12/2010 220493 TP E16a E 16 a 2S 2.5 5m from top of 13/05/2011 236575 K9 trial sample in gault K 9 2N gault 30/09/2011 251696 C15 BV C 15 1 30/06/2011 241798 I8 B BV I 8 2N 23/09/2011 250748 F15 BV F 15 2S 28/10/2011 254891 L5 BV L 5 1 30/08/2011 248118 G9 BV G 9 1 12/04/2010 195725 K16 K 16 3 2.9 14/05/2010 199157 K7 SV1 K 7 2N 8m from top of 13/05/2011 236575 J9 trail sample in gault J 9 2N gault 02/06/2011 238165 I14 BV I 14 2S 3 08/11/2010 217800 M9 M 9 2N 3.4 14/05/2010 199157 K7 SV2 K 7 2N 05/07/2010 204070 I8 BV I 8 2N 12/08/2010 208691 K13 Trial BV Sample K 13 2S 07/10/2011 252135 F16 2.65M F 16 2S 2.65 28/10/2011 254855 G17 3.1M (CS) G 17 2S 3.1 01/12/2010 220493 TP E17 E 17 2S 2 02/11/2011 255404 H18 3.5M H 18 2S 3.5 01/08/2011 244975 I12 SVE I 12 2S 06/12/2011 259497 M7 TRENCH SVE M 7 2N 26/09/2011 250862 I16 BV (CS) I 16 2S 15/07/2011 243421 I12 SVE I 12 2S 01/11/2011 255202 K17 2.5M K 17 3 2.5 24/08/2010 209399 J12 TP1 J 12 2S 1.8 18/04/2011 233858 J7 Zone 2N BV J 7 2N 28/06/2010 203772 L7 SV B L 7 2N 27/04/2011 234979 J8 2 BV J 8 2N 12/01/2011 223851 D15 A D 15 A 1 2.45 20/04/2011 234538 L8 TP L 8 2N 0.6 30/06/2011 241798 H8 2N BV H 8 2N 27/09/2011 251180 E15 BV E 15 1 19/09/2011 250154 G14 SV E 2 G 14 2S 19/09/2011 250154 G14 SV E 1 G 14 2S 27/04/2011 234979 K8 2 BV K 8 2N 13/05/2011 236129 L10 BV L 10 2N 30/06/2011 241798 H9 2N BV H 9 2N 06/06/2011 238884 H14 SV Trench H 14 2S 14/06/2011 239880 H15 BV H 15 2S 0.5m from top 13/05/2011 236575 I9 trial sample in gault I 9 2N of gault 10/11/2011 256349 C17 SVN C 17 1 02/11/2011 255401 G18 3.5M G 18 2S 3.5 01/12/2010 220489 TP D17 D 17 2S 3 29/10/2010 216821 H17 H 17 2S 2 11/10/2011 252148 G11 BV G 11 1 19/09/2011 250160 D24 5.5M D 24 3 5.5 19/09/2011 250154 G15 SV E G 15 2S 27/04/2011 235158 K10 BV K 10 2N 4m from top of 13/05/2011 236575 L9 trail sample in gault L 9 2N gault 27/04/2011 234979 K7 FACE VALIDATION K 7 2N 28/10/2011 254891 L5 SVN L 5 1 19/09/2011 250160 D23 5.5M D 23 3 5.5 14/05/2010 199157 K8 TBV K 8 2N 27/04/2011 235158 J9 BV J 9 2N 19/09/2011 250160 E24 5.5M E 24 3 5.5 06/06/2011 238884 H14 SV2 Trench H 14 2S 15/09/2010 211994 H14 H 14 2S 0.5 28/06/2010 203772 L7 L 7 2N 10m 11/05/2011 236127 J10 J 10 2N 2m 19/09/2011 250156 G10 BV 2S G 10 1 18/03/2011 230930 I6 Zone 2N BV I 6 2N 31/03/2011 232310 J7 Zone 2N BV J 7 2N 19/09/2011 250156 G12 BV 2S G 12 2S 06/07/2011 242153 L10 SV W L 10 2N 03/08/2011 245228 G8 BV G 8 1 03/08/2011 245228 H7 BV H 7 1 19/09/2011 250156 G9 BV 2S G 9 1 19/09/2011 250156 G11 BV 2S G 11 1 28/10/2011 254891 F11 BV F 11 1 03/08/2011 245225 G12 BV G 12 2S 16/07/2010 205918 L11 BV L 11 2N 08/07/2011 242852 J13 SV E J 13 2S 13/06/2011 239401 K14 Pile Base K 14 2S 08/07/2011 242852 K12 SV SW K 12 2S 18/04/2011 233858 K7 Zone 2N BV K 7 2N 09/12/2010 221370 TP F11 F 11 1 2.8 11/10/2011 252148 E13 SVE E 13 1 553 2000 03/08/2011 245225 G13 SVE G 13 2S 26/08/2010 210115 J14 Trial BV J 14 2S 18/04/2011 233858 J7 Drainage Trench SV J 7 2N 18/04/2011 233858 J8 Zone 2N BV J 8 2N 06/06/2011 237754 L8 Sidewall Validation L 8 2N 26/09/2011 250862 I15 BV I 15 2S 06/06/2011 237754 L7 Sidewall Validation L 7 2N 08/07/2011 242852 J13 BV J 13 2S 29/06/2011 241566 L10B BV L 10 2N 06/06/2011 238884 L6 Marl SW L 6 2N 23/09/2011 250748 G13 BV G 13 2S 14/04/2010 195983 BV J16 J 16 2S 18/04/2011 233858 J7 Drainage Trench BV2 J 7 2N 12/04/2010 195725 K15 K 15 2S 2.7 14/07/2010 205640 L10 Trial L 10 2N 07/11/2011 255890 M5 WELL BASE M 5 2N 01/12/2010 220493 TP E16b E 16 b 2S 2.5 06/06/2011 238884 L8 Marl SW L 8 2N 28/06/2010 203772 L7 BV A L 7 2N 28/06/2010 203772 L7 SV C L 7 2N

Validation reports colour devided revised SV, BV, TP worksheet B_HB.xlsx/Revised SV, BV, TP validations 14/22 Unidentifi Unidentifi ed Unidentifi ed Unidentifi Unidentifi aromatic ed aromatic ed ed hydrocarb aromatic hydrocarb Meta/Par branched branched on amine on 2- a aromatic aromatic containin containin containin 2- 1,2- Cycloocto 1,2,4- 2- 2,3- chloroben 2- Ethyltolue TPH (C8- Mangane alcohol alcohol g CI circa Ethofume g CI circa g O circa methylph dichlorob atomic trichlorob chlorotolu dichloroto zenemeth chloroben Report Column ne C14) Copper Lead se Nickel Zinc circa C14 circa C18 C18 sate C11 C16-18 enol enzene sulphur enzene ene luene anol zalazine Report Date Number BV Reference Row Column Letters Zone Depth µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg 19/08/201107/09/2011 246822249094 B20F19 4.4M1.6M BF 2019 2S 1.64.4 18/04/2011 233858 I8 Zone 2N BV I 8 2N 08/11/2011 256023 K15 BV K 15 2S 24/11/2010 219458 L4 L 4 1 4.5 08/11/2010 217793 M6 M 6 2N 3.7 14/05/2010 199157 K8 SV1 K 8 2N 28/06/2010 203772 K7 BV A K 7 2N 28/06/2010 203772 K8 VS K 8 2N 28/06/2010 203772 L7 SV A L 7 2N 28/06/2010 203772 K7 SV A K 7 2N 28/06/2010 203772 L7 SV D L 7 2N 19/08/2011 246822 C19 2.0M C 19 2S 2 26/08/2010 210115 TP J14 J 14 2S 1 13/05/2011 236129 L22 L 22 3 3.3m 31/03/2011 232316 K5 SV A (Trial) K 5 1 23/11/2010 219461 L6 L 6 2N 4.5 23/11/2010 219461 M10 M 10 2N 3.5 28/06/2010 203772 K7 SV B K 7 2N 05/04/2011 232770 K6 Zone 1 BV K 6 1 23/11/2010 219456 N3 N 3 1 4.5 20/05/2011 237208 L8 trial sample in gault L 8 2N 7.5 23/11/2010 219461 M11 M 11 2N 4.5 06/12/2011 259497 M7 TRENCH SVW M 7 2N 07/11/2011 255889 L14 SVW L 14 2S 14/07/2010 205640 J8 BV J 8 2N 24/11/2010 219618 N4 N 4 1 4.5 31/08/2011 248120 K5 BV K 5 2N 24/11/2010 219618 N6 N 6 2N 4.5 24/11/2010 219618 N5 N 5 2N 4.5 24/11/2010 219618 N7 N 7 2N 4.5 09/02/2011 226719 H6 CS H 6 1 24/11/2010 219618 M7 M 7 2N 4.5 31/08/2011 248120 J6 BV J 6 2N 31/08/2011 248120 I6 BV I 6 2N 24/11/2010 219619 TPK6 K 6 1 4.57 18/11/2010 218834 TPI6 I 6 1 4.7 20/05/2011 237208 L7 trial sample in marl L 7 2N 7.5 20/05/2011 237414 L7 BV 226 576 L 7 2N 4.5 07/11/2011 255889 L15 2M L 15 3 2 10/11/2011 256346 A18 SVS A 18 1 10/11/2011 256349 C17 SVSW C 17 1 11/10/2011 252148 F12 SVE F 12 1 24/08/2010 209399 J13 TP1 J 13 2S 0.5 01/11/2011 255206 K20 1.5M K 20 3 1.5 06/12/2011 259541 M8,L8,L7 0.5 L/M 7/8 2N 0.5 24/06/2011 240637 K11 SV K 11 2N 01/11/2011 255206 K19 2.5M K 19 3 2.5 25/10/2011 254129 H20 2.1M H 20 2S 2.1 28/10/2011 254858 I19 1.1M (CS) I 19 3 1.1 02/11/2011 255406 J20 4.0M (CS) J 20 3 4 10/11/2011 256349 B17 SVN B 17 1 02/06/2011 238165 L9 BV L 9 2N 4 11/10/2011 252148 F12 BV F 12 1 20/05/2011 237414 K6 BV Drain Box K 6 1 3 07/07/2011 242275 J12 SV S J 12 2S 02/06/2011 238165 J14 BV J 14 2S 3 12/09/2011 249095 E18 4.4M F 18 2S 4.4 20/05/2011 237414 L8 BV 225 558 L 8 2N 4.5 19/10/2011 253608 E19 SVS E 19 2S 02/06/2011 238165 L8 BV L 8 2N 4 11/10/2011 252148 F12 SVW F 12 1 08/07/2011 242852 K12 BV K 12 2S 07/07/2011 242275 J12 SV E J 12 2S 02/11/2011 255404 H19 3.5M H 19 2S 3.5 19/08/2011 246823 D18 2.5M D 18 2S 2.5 07/07/2011 242275 J12 SV W J 12 2S 24/06/2011 240637 K9 BV K 9 2N 31/08/2011 248299 B20 5.5M B 20 1 5.5 01/11/2011 255202 K18 2.0M K 18 3 2 08/07/2011 242852 J13 SV S J 13 2S 31/03/2011 232316 K5 SV B (Trial) K 5 1 09/12/2010 221373 TP F13 F 13 2S 2.3 20/01/2011 224618 F16 A F 16 a 2S 1.4 20/01/2011 224618 F16 B F 16 b 2S 1.2 01/12/2010 220489 TP D16b D 16 b 2S 2.5 05/04/2011 232770 K6 Zone 1 ZN BV K 6 1 10/11/2011 256346 A17 SVE A 17 1 10/11/2011 256346 A17 SVN A 17 1 12/08/2011 246185 B17 2.5M B 17 1 2.5 10/11/2011 256349 B17 BV B 17 1 10/11/2011 256349 B17 SVS B 17 1 22/08/2011 247012 B18 4.7 B 18 2S 4.7 22/08/2011 247012 B19 5.2 B 19 2S 5.2 31/08/2011 248299 B21 4.9M B 21 1 4.9 10/11/2011 256349 C17 BV C 17 1 10/11/2011 256349 C17 SVNE C 17 1 19/08/2011 246822 C20 5.5M C 20 2S 5.5 19/08/2011 246823 C21 4.9M C 21 2S 4.9 08/04/2010 195540 C22 C 22 2S 2.2 19/07/2011 243419 C23 4M C 23 1 4 12/04/2010 195723 C24 C 24 1 2.5 12/01/2011 223853 D14 D 14 1 1.45 27/09/2011 251180 D14 BV D 14 1 12/01/2011 223851 D15 B D 15 B 1 2.4 27/09/2011 251180 D15 BV D 15 1 19/08/2011 246822 D19 1.0M D 19 2S 1 12/09/2011 249223 D20 4.9M D 20 2S 4.9 08/09/2011 249227 D21 4.6M D 21 2S 4.6 22/08/2011 247009 D22 4.5 D 22 2S 4.5 21/11/2011 257595 D25 5m D 25 3 5 12/01/2011 223851 E14 B E 14 b 1 2.2 12/01/2011 223853 E15 A E 15 a 1 3.65 12/01/2011 223853 E15 B E 15 b 1 2.6 27/09/2011 251190 E16 BV (CS) E 16 2S 12/09/2011 249231 E20 4.7M E 20 2S 4.7 12/09/2011 249223 E21 4.9M E 21 2S 4.9 19/08/2011 246997 E22 4.5M E 22 2S 4.5 23/08/2011 247000 E23 4.5M E 23 3 4.5 12/04/2010 195723 E25 E 25 3 0.7 20/01/2011 224432 F11 F 11 1 20/01/2011 224432 F12 F 12 2S 11/10/2011 252148 F13 SVE F 13 1 23/09/2011 250748 F14 SV W (CS) F 14 2S 24/01/2011 224621 F15 A F 15 a 2S 1.8 24/01/2011 224621 F15 B F 15 b 2S 1.5 23/09/2011 250748 F15 SV S F 15 2S 23/09/2011 250748 F15 SV W F 15 2S 25/10/2011 254134 F18 2.8M (CS) F 18 2S 2.8 19/10/2011 253603 F19 BV F 19 2S 19/10/2011 253603 F19 SVE (CS) F 19 2S 19/10/2011 253603 F19 SVN F 19 2S 19/10/2011 253603 F19 SVS F 19 2S 28/10/2011 254852 F20 3.9M F 20 2S 3.9 25/10/2011 254134 F21 4.0M F 21 2S 4 14/09/2011 249835 F22 4.5 F 22 3 4.5 22/08/2011 247003 F23 4.0M F 23 3 4 14/09/2011 249837 F24 4.5M F 24 3 4.5 12/04/2010 195723 F25 F 25 3 1.5 14/06/2011 239880 G16 SV G 16 2S 02/11/2011 255401 G19 1.0M G 19 2S 1 25/10/2011 254129 G20 1.0M G 20 2S 1 25/10/2011 254129 G21 2.95M G 21 2S 2.95 06/09/2011 248811 G22 2.7M G 22 3 2.7 06/09/2011 248811 G23 2.5M G 23 3 2.5 06/09/2011 248811 G24 2.5M G 24 3 2.5 21/11/2011 257595 G25 1m G 25 3 1 21/04/2010 196655 H15 BV H 15 2S 4.0m 13/06/2011 239402 H17 H 17 2S 07/10/2011 252167 H21 3.5M H 21 3 3.5 28/09/2011 250856 H22 3.0M H 22 3 3 07/10/2011 252163 H23 2.5M H 23 3 2.5 16/11/2011 257084 H24 (CS) H 24 3 24/06/2011 240637 I10 SV I 10 2N 26/09/2011 250862 I15 SVE I 15 2S 26/09/2011 250862 I16 SVE I 16 2S 02/11/2011 255408 I18 3.7M I 18 2S 3.7 07/10/2011 252139 I20 3.5M I 20 3 3.5 11/10/2011 252525 I21 3.9 I 21 3 3.9 11/10/2011 252525 I22 3.1 I 22 3 3.1 27/09/2011 251176 I23 2.6M I 23 3 2.6 16/11/2011 257084 I24 (CS) I 24 3 11/07/2011 242714 I6 WALL I 6 2N 31/03/2011 232310 I6 Zone 1 BV I 6 1 31/03/2011 232310 I7 Zone 1 BV I 7 1 31/03/2011 232310 I7 Zone 2N BV I 7 2N 08/07/2011 242852 J13 SV W J 13 2S 28/10/2011 254852 J17 1.5M J 17 2S 1.5 28/10/2011 254852 J17 2.5M (CS) J 17 2S 2.5 02/11/2011 255408 J18 2.8M J 18 3 2.8 02/11/2011 255406 J19 1.9M J 19 3 1.9 02/11/2011 255406 J19 3.8M (CS) J 19 3 3.8 02/11/2011 255406 J20 2.8M J 20 3 2.8 28/10/2011 254858 J21 2.6M J 21 3 2.6 17/10/2011 252988 J22 2.5M J 22 3 2.5 17/10/2011 252988 J23 2.5M J 23 3 2.5 16/11/2011 257084 J24 (CS) J 24 3 11/07/2011 242714 J6 WALL J 6 1 31/03/2011 232310 J6 Zone 1 BV J 6 1 18/03/2011 230930 J6 Zone 2N BV J 6 2N 18/04/2011 233858 J7 Drainage Trench BV J 7 2N 18/04/2011 233858 J7 Drainage Trench SV2 J 7 2N 23/06/2010 203335 J7 VS J 7 2N 11/07/2011 242412 K13 5.4M K 13 2S 5.4 21/04/2010 196655 K14 BV K 14 2S 4.0m 19/04/2010 196515 K16 BV 6 K 16 3 01/11/2011 255206 K20 2.5M (CS) K 20 3 2.5 28/10/2011 254855 K21 3.1M K 21 3 3.1 27/09/2011 250882 K22 2.7M K 22 3 2.7 17/10/2011 252988 K23 2.5M K 23 3 2.5 16/11/2011 257084 K24 (CS) K 24 3 11/07/2011 242714 K5 WALL K 5 1 08/11/2011 256029 L10 0.5 L 10 2N 0.5 28000 76000 380000 20000 88000 28/03/2011 231688 L12 L 12 2N 3.2 30/03/2011 232134 L14 L 14 2S 3.4 16/11/2011 257081 L17 (CS) L 17 3

Validation reports colour devided revised SV, BV, TP worksheet B_HB.xlsx/Revised SV, BV, TP validations 15/22 Unidentifi Unidentifi ed Unidentifi ed Unidentifi Unidentifi aromatic ed aromatic ed ed hydrocarb aromatic hydrocarb Meta/Par branched branched on amine on 2- a aromatic aromatic containin containin containin 2- 1,2- Cycloocto 1,2,4- 2- 2,3- chloroben 2- Ethyltolue TPH (C8- Mangane alcohol alcohol g CI circa Ethofume g CI circa g O circa methylph dichlorob atomic trichlorob chlorotolu dichloroto zenemeth chloroben Report Column ne C14) Copper Lead se Nickel Zinc circa C14 circa C18 C18 sate C11 C16-18 enol enzene sulphur enzene ene luene anol zalazine Report Date Number BV Reference Row Column Letters Zone Depth µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg 16/11/201107/09/2011 257081249094 F19L18 4.4M(CS) FL 1819 2S3 4.4 16/11/2011 257081 L19 (CS) L 19 3 16/11/2011 257081 L20 (CS) L 20 3 16/11/2011 257081 L21 (CS) L 21 3 08/11/2010 217795 L5 L 5 1 3.5 28/10/2011 254891 L5 SVW L 5 1 06/12/2011 259483 L5 Z1 BV L 5 1 06/12/2011 259483 L5 Z1 SVE L 5 1 06/12/2011 259483 L5 Z1 SVN L 5 1 06/12/2011 259483 L5 Z1 SVW L 5 1 06/12/2011 259483 L5 Z2 SVN L 5 2N 13/06/2011 239578 L6 BV 4.0m L 6 2N 4 31/03/2011 232316 L6 SV (Trial) L 6 2N 13/06/2011 239578 L7 BV 4.0m L 7 2N 4 08/11/2011 256029 L9 0.5 L 9 2N 0.5 22000 77000 740000 19000 67000 08/11/2010 217795 M4 M 4 1 3.92 08/11/2010 217797 M5 M 5 2N 3.9 08/11/2010 217797 N4 N 4 1 1.5 09/12/2010 221370 TP E12 E 12 1 2.5 09/12/2010 221373 TP E13 E 13 1 2.8 09/12/2010 221370 TP F12 F 12 1 2.3 26/09/2011 250862 I16 SVS I 16 2S 30/09/2011 251696 E14 SV WEST E 14 1 14/05/2010 199157 K8 SV2 K 8 2N 30/11/2011 258839 K8 BV 2.4M K 8 2N 2.4 15/08/2011 246538 I12 BV I 12 2S 30/11/2011 258839 L8 GAULT 3.8M L 8 2N 3.8 01/08/2011 244972 H12 SVS H 12 2S 01/08/2011 244972 H12 SVW H 12 2S 28/07/2010 206893 H10 Trial H 10 2S 11/10/2011 252148 E13 BV E 13 1 118 17/11/2011 257086 G15 1.68M G 15 2S 1.68 17/11/2011 257086 H15 3.54M H 15 2S 3.54 17/11/2011 257086 H16 3.57M H 16 2S 3.57 24/06/2011 240637 I9 BV I 9 2N 14/07/2010 205640 J7 BV J 7 2N 24/06/2011 240637 K10 BV K 10 2N 11/07/2011 242412 L13 5.4M L 13 2N 5.4 02/09/2011 248595 F12SVE F 12 2S 02/09/2011 248595 F12SVN F 12 2S 02/09/2011 248595 F12SVS F 12 2S 08/07/2010 205069 K7 SV A K 7 2N 08/07/2010 205069 K7 SV B K 7 2N 08/07/2010 205069 L7 SV A L 7 2N 08/07/2010 205069 L7 SV B L 7 2N 08/07/2010 205069 L7 SV C L 7 2N 08/07/2010 205069 L7 SV D L 7 2N 08/07/2010 205069 K7 BV A K 7 2N 08/07/2010 205069 K8 VS K 8 2N 08/07/2010 205069 L7 L 7 2N 10m 08/07/2010 205069 L7 BV A L 7 2N 16/12/2010 221996 TP D16B D 16 b 2S 16/12/2010 221996 TP D17 D 17 2S 16/12/2010 221994 TP E16A E 16 2S

Number of samples 2 1 2 2 2 2 2 0 0 0 0 0 0 1 0 0 0 0 0 0 0 Minimum value 118.00 2000.00 22000.00 76000.00 ######## 19000.00 67000.00 0.00 0.00 0.00 0.00 0.00 0.00 11000.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Maximum value 553.00 2000.00 28000.00 77000.00 ######## 20000.00 88000.00 0.00 0.00 0.00 0.00 0.00 0.00 11000.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Second highest value 118.00 #NUM! 22000.00 76000.00 ######## 19000.00 67000.00 #NUM! #NUM! #NUM! #NUM! #NUM! #NUM! #NUM! #NUM! #NUM! #NUM! #NUM! #NUM! #NUM! #NUM! 2000- 22000- 76000- 380000- 19000- 67000- 11000- Range 118- 553 2000 28000 77000 740000 20000 88000 0- 0 0- 0 0- 0 0- 0 0- 0 0- 0 11000 0- 0 0- 0 0- 0 0- 0 0- 0 0- 0 0- 0

Average concentration 335.50 2000.00 25000.00 76500.00 ######## 19500.00 77500.00 0.00 0.00 0.00 0.00 0.00 0.00 11000.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Number of exceedances 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 % above assessment criteria 0.00 0.00 0.00 0.00 0.00 0.00 0.00 #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! 0.00 #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! Assessment criteria 1590.0 - NA NA NA NA NA NA NA - NA NA NA NA 1500.0 NA 1500.0 NA 0.5 - 92.8

Surrogat Surrogat Surrogat e 2006 e Atkins e Atkins Surrogat Atkins Source of SSV SSV e SSV, SSV assessment Derived Not Not Not Not Not Not (chlorob (chlorob Vinyl (benzene criteria SSV - volatile volatile volatile volatile volatile - - - volatile - - - enzene) - enzene) - chloride - ) Notes Coloured text from original spreadsh hb eet Across different zones informatio n enetered for zone area

Validation reports colour devided revised SV, BV, TP worksheet B_HB.xlsx/Revised SV, BV, TP validations 16/22 Revised SV, BV, TP validation samples assessment

Total Petroleu m 3,3,5- 1,3,5- 1,2,4- 1,2,3- 1-ethyl-2- Hydrocar Dichlorop Bis(methy Dibromoc trimethylc 2,4,5- 1,2- 1,4- 1,2,3- trimethylb trimethylb trimethylb methylbe bons C5- Dibenzofu Dichlorocr henoxybu methylpro Ethyltolue lpropyl)ph Isophoron hlorometh Benzyl yclohexan trichlorop Chlorofor dibromoet Ethylbenz dichloroe trichlorob Report Column enzene enzene enzene nzene C12 ran esol tyric acid pylphenol ne enol e ane chloride one henol m hane ene nzene enzene Report Date Number BV Reference Row Column Letters Zone Depth µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg 07/09/2011 249094 F19 4.4M F 19 2S 4.4 19/10/2011 253608 E19 SVE E 19 2S 24/06/2011 240637 J10 SV J 10 2N 24/06/2011 240637 J10 BV J 10 2N 19/10/2011 253608 E19 BV E 19 2S 14/09/2011 249465 I13 BV I 13 2S 07/07/2011 242275 J11 SV E J 11 2S 07/07/2011 242275 J11 BV J 11 2S 19/10/2011 253608 E19 SVN E 19 2S 14/09/2011 249465 H13 BV H 13 2S 27/04/2011 235158 J10 BV J 10 2N 27/04/2011 235158 I9 BV I 9 2N 15/07/2011 243421 I11 SVS I 11 2N 15/07/2011 243421 I11 SVE I 11 2N 15/07/2011 243421 I11 BV I 11 2N 08/07/2011 242852 K11BV K 11 2N 14/06/2011 239880 G16 BV G 16 2S 16/06/2011 240124 I17 I 17 2S 3.4 24/05/2010 199763 J7 BV J 7 2N 28/10/2011 254891 F11 SVE F 11 1 08/11/2010 217789 M8 M 8 2N 3.7 06/06/2011 238884 L7 Marl SW L 7 2N 20/01/2011 224432 F13 F 13 1 11/07/2011 242714 H9 WALL H 9 2N 14/06/2011 239880 H16 SV H 16 2S 11/07/2011 242714 H8 WALL H 8 2N 06/07/2011 242153 L9 SV W L 9 2N 24/08/2010 209399 J13 TP2 J 13 2S 2.2 15/09/2010 211994 H14 Trial BV H 14 2S 27/09/2011 251190 C16 BV (CS) C 16 1 06/12/2011 259469 M8 BV M 8 2N 01/08/2011 244972 H12 BV L H 12 2S 11/05/2011 236127 K10 K 10 2N 2m 08/09/2011 248818 K5 BV 2.8M K 5 1 2.8 20/01/2011 224432 E13 E 13 1 24/05/2010 199763 J8 J 8 2N 19/09/2011 250154 G15 BV G 15 2S 28/07/2010 206893 I10 Trial I 10 2N 11/05/2011 236127 I9 I 9 2N 2m 13/05/2010 198957 L7 BV L 7 2N 01/08/2011 244972 H12 BV U H 12 2S 19/09/2011 250154 G14 BV G 14 2S 03/08/2011 245225 G11 BV G 11 2S 01/08/2011 244975 I10 BV I 10 2N 08/09/2011 248818 L5 BV 2.8M L 5 1 2.8 30/08/2011 248118 G8 BV G 8 2N 30/08/2011 248118 H7 BV H 7 2N 13/05/2010 198957 K7 BV2 K 7 2N 06/12/2011 259541 L6 3.0 L 6 2N 3 01/08/2011 244972 H12 SVE H 12 2S 01/08/2011 244975 H10 BV H 10 2S 01/08/2011 244975 H11 BV H 11 2S 31/08/2011 248299 B22 6.0M B 22 1 6 20/01/2011 224432 E12 E 12 1 06/12/2011 259478 L5 ZONE 2 4.0M L 5 2N 4 30/11/2011 258839 L8 SVW 2.2M L 8 2N 2.2 06/12/2011 259497 M7 TRENCH BV M 7 2N 06/12/2011 259469 M8 SV W M 8 2N 06/12/2011 259469 M9 BV M 9 2N 06/12/2011 259469 M9 SV W M 9 2N 08/09/2010 211302 I15 Trial BV I 15 2S 12/08/2010 208691 J13 Trial BV Sample J 13 2S 07/07/2011 242275 K12 K 12 2S 18/04/2011 233858 K8 Zone 2N BV K 8 2N 14/06/2011 239880 H16 BV H 16 2S 15/07/2011 243421 I12 SVS I 12 2S 03/08/2011 245225 G11 SVE G 11 2S 31/08/2011 248300 E17 5M E 17 2S 5 01/12/2010 220489 TP D16a D 16 a 2S 2.5 07/07/2011 242275 J12 BV J 12 2S 21/07/2010 206314 L8 BV L 8 2N 30/08/2011 248118 G10 BV G 10 1 03/08/2011 245225 G12 SVE G 12 2S 01/08/2011 244975 I11 BV I 11 2S 23/09/2011 250748 F15 TRENCH F 15 2S 30/09/2011 251696 E14 BV E 14 1 14/05/2010 199157 K7 TBV K 7 2N 07/11/2011 255889 L15 SVW L 15 3 02/11/2011 255401 G19 2.5M (CS) G 19 2S 2.5 12/01/2011 223851 E14 A E 14 a 1 2.4 25/10/2011 254335 F17 3.9M F 17 2S 3.9 15/07/2011 243421 I10 SVE I 10 2N 13/06/2011 239401 K15 Pile Base K 15 2S 01/12/2010 220493 TP E16a E 16 a 2S 2.5 5m from top of 13/05/2011 236575 K9 trial sample in gault K 9 2N gault 30/09/2011 251696 C15 BV C 15 1 30/06/2011 241798 I8 B BV I 8 2N 23/09/2011 250748 F15 BV F 15 2S 28/10/2011 254891 L5 BV L 5 1 30/08/2011 248118 G9 BV G 9 1 12/04/2010 195725 K16 K 16 3 2.9 14/05/2010 199157 K7 SV1 K 7 2N 8m from top of 13/05/2011 236575 J9 trail sample in gault J 9 2N gault 02/06/2011 238165 I14 BV I 14 2S 3 08/11/2010 217800 M9 M 9 2N 3.4 14/05/2010 199157 K7 SV2 K 7 2N 05/07/2010 204070 I8 BV I 8 2N 12/08/2010 208691 K13 Trial BV Sample K 13 2S 07/10/2011 252135 F16 2.65M F 16 2S 2.65 28/10/2011 254855 G17 3.1M (CS) G 17 2S 3.1 01/12/2010 220493 TP E17 E 17 2S 2 02/11/2011 255404 H18 3.5M H 18 2S 3.5 01/08/2011 244975 I12 SVE I 12 2S 06/12/2011 259497 M7 TRENCH SVE M 7 2N 26/09/2011 250862 I16 BV (CS) I 16 2S 15/07/2011 243421 I12 SVE I 12 2S 01/11/2011 255202 K17 2.5M K 17 3 2.5 24/08/2010 209399 J12 TP1 J 12 2S 1.8 18/04/2011 233858 J7 Zone 2N BV J 7 2N 28/06/2010 203772 L7 SV B L 7 2N 27/04/2011 234979 J8 2 BV J 8 2N 12/01/2011 223851 D15 A D 15 A 1 2.45 20/04/2011 234538 L8 TP L 8 2N 0.6 30/06/2011 241798 H8 2N BV H 8 2N 27/09/2011 251180 E15 BV E 15 1 19/09/2011 250154 G14 SV E 2 G 14 2S 19/09/2011 250154 G14 SV E 1 G 14 2S 27/04/2011 234979 K8 2 BV K 8 2N 13/05/2011 236129 L10 BV L 10 2N 30/06/2011 241798 H9 2N BV H 9 2N 06/06/2011 238884 H14 SV Trench H 14 2S 14/06/2011 239880 H15 BV H 15 2S 0.5m from top 13/05/2011 236575 I9 trial sample in gault I 9 2N of gault 10/11/2011 256349 C17 SVN C 17 1 02/11/2011 255401 G18 3.5M G 18 2S 3.5 01/12/2010 220489 TP D17 D 17 2S 3 29/10/2010 216821 H17 H 17 2S 2 11/10/2011 252148 G11 BV G 11 1 19/09/2011 250160 D24 5.5M D 24 3 5.5 19/09/2011 250154 G15 SV E G 15 2S 27/04/2011 235158 K10 BV K 10 2N 4m from top of 13/05/2011 236575 L9 trail sample in gault L 9 2N gault 27/04/2011 234979 K7 FACE VALIDATION K 7 2N 28/10/2011 254891 L5 SVN L 5 1 19/09/2011 250160 D23 5.5M D 23 3 5.5 14/05/2010 199157 K8 TBV K 8 2N 27/04/2011 235158 J9 BV J 9 2N 19/09/2011 250160 E24 5.5M E 24 3 5.5 06/06/2011 238884 H14 SV2 Trench H 14 2S 15/09/2010 211994 H14 H 14 2S 0.5 28/06/2010 203772 L7 L 7 2N 10m 11/05/2011 236127 J10 J 10 2N 2m 19/09/2011 250156 G10 BV 2S G 10 1 18/03/2011 230930 I6 Zone 2N BV I 6 2N 31/03/2011 232310 J7 Zone 2N BV J 7 2N 19/09/2011 250156 G12 BV 2S G 12 2S 06/07/2011 242153 L10 SV W L 10 2N 03/08/2011 245228 G8 BV G 8 1 03/08/2011 245228 H7 BV H 7 1 19/09/2011 250156 G9 BV 2S G 9 1 19/09/2011 250156 G11 BV 2S G 11 1 28/10/2011 254891 F11 BV F 11 1 03/08/2011 245225 G12 BV G 12 2S 16/07/2010 205918 L11 BV L 11 2N 08/07/2011 242852 J13 SV E J 13 2S 13/06/2011 239401 K14 Pile Base K 14 2S 08/07/2011 242852 K12 SV SW K 12 2S 18/04/2011 233858 K7 Zone 2N BV K 7 2N 09/12/2010 221370 TP F11 F 11 1 2.8 11/10/2011 252148 E13 SVE E 13 1 03/08/2011 245225 G13 SVE G 13 2S 26/08/2010 210115 J14 Trial BV J 14 2S 18/04/2011 233858 J7 Drainage Trench SV J 7 2N 18/04/2011 233858 J8 Zone 2N BV J 8 2N 06/06/2011 237754 L8 Sidewall Validation L 8 2N 26/09/2011 250862 I15 BV I 15 2S 06/06/2011 237754 L7 Sidewall Validation L 7 2N 08/07/2011 242852 J13 BV J 13 2S 29/06/2011 241566 L10B BV L 10 2N 06/06/2011 238884 L6 Marl SW L 6 2N 23/09/2011 250748 G13 BV G 13 2S 14/04/2010 195983 BV J16 J 16 2S 18/04/2011 233858 J7 Drainage Trench BV2 J 7 2N 12/04/2010 195725 K15 K 15 2S 2.7 14/07/2010 205640 L10 Trial L 10 2N 07/11/2011 255890 M5 WELL BASE M 5 2N 01/12/2010 220493 TP E16b E 16 b 2S 2.5 06/06/2011 238884 L8 Marl SW L 8 2N 28/06/2010 203772 L7 BV A L 7 2N 28/06/2010 203772 L7 SV C L 7 2N

Validation reports colour devided revised SV, BV, TP worksheet B_HB.xlsx/Revised SV, BV, TP validations 17/22 Total Petroleu m 3,3,5- 1,3,5- 1,2,4- 1,2,3- 1-ethyl-2- Hydrocar Dichlorop Bis(methy Dibromoc trimethylc 2,4,5- 1,2- 1,4- 1,2,3- trimethylb trimethylb trimethylb methylbe bons C5- Dibenzofu Dichlorocr henoxybu methylpro Ethyltolue lpropyl)ph Isophoron hlorometh Benzyl yclohexan trichlorop Chlorofor dibromoet Ethylbenz dichloroe trichlorob Report Column enzene enzene enzene nzene C12 ran esol tyric acid pylphenol ne enol e ane chloride one henol m hane ene nzene enzene Report Date Number BV Reference Row Column Letters Zone Depth µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg 19/08/201107/09/2011 246822249094 B20F19 4.4M1.6M BF 2019 2S 1.64.4 18/04/2011 233858 I8 Zone 2N BV I 8 2N 08/11/2011 256023 K15 BV K 15 2S 24/11/2010 219458 L4 L 4 1 4.5 08/11/2010 217793 M6 M 6 2N 3.7 14/05/2010 199157 K8 SV1 K 8 2N 28/06/2010 203772 K7 BV A K 7 2N 28/06/2010 203772 K8 VS K 8 2N 28/06/2010 203772 L7 SV A L 7 2N 28/06/2010 203772 K7 SV A K 7 2N 28/06/2010 203772 L7 SV D L 7 2N 19/08/2011 246822 C19 2.0M C 19 2S 2 26/08/2010 210115 TP J14 J 14 2S 1 13/05/2011 236129 L22 L 22 3 3.3m 31/03/2011 232316 K5 SV A (Trial) K 5 1 23/11/2010 219461 L6 L 6 2N 4.5 23/11/2010 219461 M10 M 10 2N 3.5 28/06/2010 203772 K7 SV B K 7 2N 05/04/2011 232770 K6 Zone 1 BV K 6 1 23/11/2010 219456 N3 N 3 1 4.5 20/05/2011 237208 L8 trial sample in gault L 8 2N 7.5 23/11/2010 219461 M11 M 11 2N 4.5 06/12/2011 259497 M7 TRENCH SVW M 7 2N 07/11/2011 255889 L14 SVW L 14 2S 14/07/2010 205640 J8 BV J 8 2N 24/11/2010 219618 N4 N 4 1 4.5 31/08/2011 248120 K5 BV K 5 2N 24/11/2010 219618 N6 N 6 2N 4.5 24/11/2010 219618 N5 N 5 2N 4.5 24/11/2010 219618 N7 N 7 2N 4.5 09/02/2011 226719 H6 CS H 6 1 24/11/2010 219618 M7 M 7 2N 4.5 31/08/2011 248120 J6 BV J 6 2N 31/08/2011 248120 I6 BV I 6 2N 24/11/2010 219619 TPK6 K 6 1 4.57 18/11/2010 218834 TPI6 I 6 1 4.7 20/05/2011 237208 L7 trial sample in marl L 7 2N 7.5 20/05/2011 237414 L7 BV 226 576 L 7 2N 4.5 07/11/2011 255889 L15 2M L 15 3 2 10/11/2011 256346 A18 SVS A 18 1 10/11/2011 256349 C17 SVSW C 17 1 11/10/2011 252148 F12 SVE F 12 1 24/08/2010 209399 J13 TP1 J 13 2S 0.5 01/11/2011 255206 K20 1.5M K 20 3 1.5 06/12/2011 259541 M8,L8,L7 0.5 L/M 7/8 2N 0.5 24/06/2011 240637 K11 SV K 11 2N 01/11/2011 255206 K19 2.5M K 19 3 2.5 25/10/2011 254129 H20 2.1M H 20 2S 2.1 28/10/2011 254858 I19 1.1M (CS) I 19 3 1.1 02/11/2011 255406 J20 4.0M (CS) J 20 3 4 10/11/2011 256349 B17 SVN B 17 1 02/06/2011 238165 L9 BV L 9 2N 4 11/10/2011 252148 F12 BV F 12 1 20/05/2011 237414 K6 BV Drain Box K 6 1 3 07/07/2011 242275 J12 SV S J 12 2S 02/06/2011 238165 J14 BV J 14 2S 3 12/09/2011 249095 E18 4.4M F 18 2S 4.4 20/05/2011 237414 L8 BV 225 558 L 8 2N 4.5 19/10/2011 253608 E19 SVS E 19 2S 02/06/2011 238165 L8 BV L 8 2N 4 11/10/2011 252148 F12 SVW F 12 1 08/07/2011 242852 K12 BV K 12 2S 07/07/2011 242275 J12 SV E J 12 2S 02/11/2011 255404 H19 3.5M H 19 2S 3.5 19/08/2011 246823 D18 2.5M D 18 2S 2.5 07/07/2011 242275 J12 SV W J 12 2S 24/06/2011 240637 K9 BV K 9 2N 31/08/2011 248299 B20 5.5M B 20 1 5.5 01/11/2011 255202 K18 2.0M K 18 3 2 08/07/2011 242852 J13 SV S J 13 2S 31/03/2011 232316 K5 SV B (Trial) K 5 1 09/12/2010 221373 TP F13 F 13 2S 2.3 20/01/2011 224618 F16 A F 16 a 2S 1.4 20/01/2011 224618 F16 B F 16 b 2S 1.2 01/12/2010 220489 TP D16b D 16 b 2S 2.5 05/04/2011 232770 K6 Zone 1 ZN BV K 6 1 10/11/2011 256346 A17 SVE A 17 1 10/11/2011 256346 A17 SVN A 17 1 12/08/2011 246185 B17 2.5M B 17 1 2.5 10/11/2011 256349 B17 BV B 17 1 10/11/2011 256349 B17 SVS B 17 1 22/08/2011 247012 B18 4.7 B 18 2S 4.7 22/08/2011 247012 B19 5.2 B 19 2S 5.2 31/08/2011 248299 B21 4.9M B 21 1 4.9 10/11/2011 256349 C17 BV C 17 1 10/11/2011 256349 C17 SVNE C 17 1 19/08/2011 246822 C20 5.5M C 20 2S 5.5 19/08/2011 246823 C21 4.9M C 21 2S 4.9 08/04/2010 195540 C22 C 22 2S 2.2 19/07/2011 243419 C23 4M C 23 1 4 12/04/2010 195723 C24 C 24 1 2.5 12/01/2011 223853 D14 D 14 1 1.45 27/09/2011 251180 D14 BV D 14 1 12/01/2011 223851 D15 B D 15 B 1 2.4 27/09/2011 251180 D15 BV D 15 1 19/08/2011 246822 D19 1.0M D 19 2S 1 12/09/2011 249223 D20 4.9M D 20 2S 4.9 08/09/2011 249227 D21 4.6M D 21 2S 4.6 22/08/2011 247009 D22 4.5 D 22 2S 4.5 21/11/2011 257595 D25 5m D 25 3 5 12/01/2011 223851 E14 B E 14 b 1 2.2 12/01/2011 223853 E15 A E 15 a 1 3.65 12/01/2011 223853 E15 B E 15 b 1 2.6 27/09/2011 251190 E16 BV (CS) E 16 2S 12/09/2011 249231 E20 4.7M E 20 2S 4.7 12/09/2011 249223 E21 4.9M E 21 2S 4.9 19/08/2011 246997 E22 4.5M E 22 2S 4.5 23/08/2011 247000 E23 4.5M E 23 3 4.5 12/04/2010 195723 E25 E 25 3 0.7 20/01/2011 224432 F11 F 11 1 20/01/2011 224432 F12 F 12 2S 11/10/2011 252148 F13 SVE F 13 1 23/09/2011 250748 F14 SV W (CS) F 14 2S 24/01/2011 224621 F15 A F 15 a 2S 1.8 24/01/2011 224621 F15 B F 15 b 2S 1.5 23/09/2011 250748 F15 SV S F 15 2S 23/09/2011 250748 F15 SV W F 15 2S 25/10/2011 254134 F18 2.8M (CS) F 18 2S 2.8 19/10/2011 253603 F19 BV F 19 2S 19/10/2011 253603 F19 SVE (CS) F 19 2S 19/10/2011 253603 F19 SVN F 19 2S 19/10/2011 253603 F19 SVS F 19 2S 28/10/2011 254852 F20 3.9M F 20 2S 3.9 25/10/2011 254134 F21 4.0M F 21 2S 4 14/09/2011 249835 F22 4.5 F 22 3 4.5 22/08/2011 247003 F23 4.0M F 23 3 4 14/09/2011 249837 F24 4.5M F 24 3 4.5 12/04/2010 195723 F25 F 25 3 1.5 14/06/2011 239880 G16 SV G 16 2S 02/11/2011 255401 G19 1.0M G 19 2S 1 25/10/2011 254129 G20 1.0M G 20 2S 1 25/10/2011 254129 G21 2.95M G 21 2S 2.95 06/09/2011 248811 G22 2.7M G 22 3 2.7 06/09/2011 248811 G23 2.5M G 23 3 2.5 06/09/2011 248811 G24 2.5M G 24 3 2.5 21/11/2011 257595 G25 1m G 25 3 1 21/04/2010 196655 H15 BV H 15 2S 4.0m 13/06/2011 239402 H17 H 17 2S 07/10/2011 252167 H21 3.5M H 21 3 3.5 28/09/2011 250856 H22 3.0M H 22 3 3 07/10/2011 252163 H23 2.5M H 23 3 2.5 16/11/2011 257084 H24 (CS) H 24 3 24/06/2011 240637 I10 SV I 10 2N 26/09/2011 250862 I15 SVE I 15 2S 26/09/2011 250862 I16 SVE I 16 2S 02/11/2011 255408 I18 3.7M I 18 2S 3.7 07/10/2011 252139 I20 3.5M I 20 3 3.5 11/10/2011 252525 I21 3.9 I 21 3 3.9 11/10/2011 252525 I22 3.1 I 22 3 3.1 27/09/2011 251176 I23 2.6M I 23 3 2.6 16/11/2011 257084 I24 (CS) I 24 3 11/07/2011 242714 I6 WALL I 6 2N 31/03/2011 232310 I6 Zone 1 BV I 6 1 31/03/2011 232310 I7 Zone 1 BV I 7 1 31/03/2011 232310 I7 Zone 2N BV I 7 2N 08/07/2011 242852 J13 SV W J 13 2S 28/10/2011 254852 J17 1.5M J 17 2S 1.5 28/10/2011 254852 J17 2.5M (CS) J 17 2S 2.5 02/11/2011 255408 J18 2.8M J 18 3 2.8 02/11/2011 255406 J19 1.9M J 19 3 1.9 02/11/2011 255406 J19 3.8M (CS) J 19 3 3.8 02/11/2011 255406 J20 2.8M J 20 3 2.8 28/10/2011 254858 J21 2.6M J 21 3 2.6 17/10/2011 252988 J22 2.5M J 22 3 2.5 17/10/2011 252988 J23 2.5M J 23 3 2.5 16/11/2011 257084 J24 (CS) J 24 3 11/07/2011 242714 J6 WALL J 6 1 31/03/2011 232310 J6 Zone 1 BV J 6 1 18/03/2011 230930 J6 Zone 2N BV J 6 2N 18/04/2011 233858 J7 Drainage Trench BV J 7 2N 18/04/2011 233858 J7 Drainage Trench SV2 J 7 2N 23/06/2010 203335 J7 VS J 7 2N 11/07/2011 242412 K13 5.4M K 13 2S 5.4 21/04/2010 196655 K14 BV K 14 2S 4.0m 19/04/2010 196515 K16 BV 6 K 16 3 01/11/2011 255206 K20 2.5M (CS) K 20 3 2.5 28/10/2011 254855 K21 3.1M K 21 3 3.1 27/09/2011 250882 K22 2.7M K 22 3 2.7 17/10/2011 252988 K23 2.5M K 23 3 2.5 16/11/2011 257084 K24 (CS) K 24 3 11/07/2011 242714 K5 WALL K 5 1 08/11/2011 256029 L10 0.5 L 10 2N 0.5 28/03/2011 231688 L12 L 12 2N 3.2 30/03/2011 232134 L14 L 14 2S 3.4 16/11/2011 257081 L17 (CS) L 17 3

Validation reports colour devided revised SV, BV, TP worksheet B_HB.xlsx/Revised SV, BV, TP validations 18/22 Total Petroleu m 3,3,5- 1,3,5- 1,2,4- 1,2,3- 1-ethyl-2- Hydrocar Dichlorop Bis(methy Dibromoc trimethylc 2,4,5- 1,2- 1,4- 1,2,3- trimethylb trimethylb trimethylb methylbe bons C5- Dibenzofu Dichlorocr henoxybu methylpro Ethyltolue lpropyl)ph Isophoron hlorometh Benzyl yclohexan trichlorop Chlorofor dibromoet Ethylbenz dichloroe trichlorob Report Column enzene enzene enzene nzene C12 ran esol tyric acid pylphenol ne enol e ane chloride one henol m hane ene nzene enzene Report Date Number BV Reference Row Column Letters Zone Depth µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg 16/11/201107/09/2011 257081249094 F19L18 4.4M(CS) FL 1819 2S3 4.4 16/11/2011 257081 L19 (CS) L 19 3 16/11/2011 257081 L20 (CS) L 20 3 16/11/2011 257081 L21 (CS) L 21 3 08/11/2010 217795 L5 L 5 1 3.5 28/10/2011 254891 L5 SVW L 5 1 06/12/2011 259483 L5 Z1 BV L 5 1 06/12/2011 259483 L5 Z1 SVE L 5 1 06/12/2011 259483 L5 Z1 SVN L 5 1 06/12/2011 259483 L5 Z1 SVW L 5 1 06/12/2011 259483 L5 Z2 SVN L 5 2N 13/06/2011 239578 L6 BV 4.0m L 6 2N 4 31/03/2011 232316 L6 SV (Trial) L 6 2N 13/06/2011 239578 L7 BV 4.0m L 7 2N 4 08/11/2011 256029 L9 0.5 L 9 2N 0.5 08/11/2010 217795 M4 M 4 1 3.92 08/11/2010 217797 M5 M 5 2N 3.9 08/11/2010 217797 N4 N 4 1 1.5 09/12/2010 221370 TP E12 E 12 1 2.5 09/12/2010 221373 TP E13 E 13 1 2.8 09/12/2010 221370 TP F12 F 12 1 2.3 26/09/2011 250862 I16 SVS I 16 2S 30/09/2011 251696 E14 SV WEST E 14 1 14/05/2010 199157 K8 SV2 K 8 2N 30/11/2011 258839 K8 BV 2.4M K 8 2N 2.4 15/08/2011 246538 I12 BV I 12 2S 30/11/2011 258839 L8 GAULT 3.8M L 8 2N 3.8 01/08/2011 244972 H12 SVS H 12 2S 01/08/2011 244972 H12 SVW H 12 2S 28/07/2010 206893 H10 Trial H 10 2S 11/10/2011 252148 E13 BV E 13 1 17/11/2011 257086 G15 1.68M G 15 2S 1.68 17/11/2011 257086 H15 3.54M H 15 2S 3.54 17/11/2011 257086 H16 3.57M H 16 2S 3.57 24/06/2011 240637 I9 BV I 9 2N 14/07/2010 205640 J7 BV J 7 2N 24/06/2011 240637 K10 BV K 10 2N 11/07/2011 242412 L13 5.4M L 13 2N 5.4 02/09/2011 248595 F12SVE F 12 2S 02/09/2011 248595 F12SVN F 12 2S 02/09/2011 248595 F12SVS F 12 2S 08/07/2010 205069 K7 SV A K 7 2N 08/07/2010 205069 K7 SV B K 7 2N 08/07/2010 205069 L7 SV A L 7 2N 08/07/2010 205069 L7 SV B L 7 2N 08/07/2010 205069 L7 SV C L 7 2N 08/07/2010 205069 L7 SV D L 7 2N 08/07/2010 205069 K7 BV A K 7 2N 08/07/2010 205069 K8 VS K 8 2N 08/07/2010 205069 L7 L 7 2N 10m 08/07/2010 205069 L7 BV A L 7 2N 16/12/2010 221996 TP D16B D 16 b 2S 16/12/2010 221996 TP D17 D 17 2S 16/12/2010 221994 TP E16A E 16 2S

Number of samples 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Minimum value 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Maximum value 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Second highest value #NUM! #NUM! #NUM! #NUM! #NUM! #NUM! #NUM! #NUM! #NUM! #NUM! #NUM! #NUM! #NUM! #NUM! #NUM! #NUM! #NUM! #NUM! #NUM! #NUM! #NUM!

Range 0- 0 0- 0 0- 0 0- 0 0- 0 0- 0 0- 0 0- 0 0- 0 0- 0 0- 0 0- 0 0- 0 0- 0 0- 0 0- 0 0- 0 0- 0 0- 0 0- 0 0- 0

Average concentration 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Number of exceedances 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 % above assessment criteria #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! Assessment criteria NA NA NA NA - NA 2440000.0 NA NA NA 238000.0 NA 65.8 NA NA NA NA NA 9000.0 NA NA Surrogat e Atkins CNPI 2,6- bis(1,1- dimethyl ethyl-4-(1- Source of methylpr assessment Atkins opyl)- Atkins criteria ------CNPI - - - phenol - CNPI - - - - - SGV - - Notes Coloured text from original spreadsh hb eet Across different zones informatio n enetered for zone area

Validation reports colour devided revised SV, BV, TP worksheet B_HB.xlsx/Revised SV, BV, TP validations 19/22 Revised SV, BV, TP validation samples assessment

Sum of Indane, 1-ethyl- Unidentified 3-methylbenzene, 1- aromatic ethyl-3- hydrocarbon Unidentified methylbenzene, TPH 1-ethyl-3- Glycerol Benzo(a) Chlorome containing O Dodecanoic Aliphatic C8-14, 1-ethyl-3- ethylmeth methylbe tricaprylat anthracen thylpheno and CI circa Acid isooctyl hydrocarbon methylbenzene, 1-ethyl- Report Column ylphenol nzene Squalene e e l C7 ester circa C30 4-methylbenzene Report Date Number BV Reference Row Column Letters Zone Depth µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg 07/09/2011 249094 F19 4.4M F 19 2S 4.4 0 19/10/2011 253608 E19 SVE E 19 2S 0 24/06/2011 240637 J10 SV J 10 2N 0 24/06/2011 240637 J10 BV J 10 2N 0 19/10/2011 253608 E19 BV E 19 2S 0 14/09/2011 249465 I13 BV I 13 2S 0 07/07/2011 242275 J11 SV E J 11 2S 0 07/07/2011 242275 J11 BV J 11 2S 0 19/10/2011 253608 E19 SVN E 19 2S 0 14/09/2011 249465 H13 BV H 13 2S 0 27/04/2011 235158 J10 BV J 10 2N 0 27/04/2011 235158 I9 BV I 9 2N 0 15/07/2011 243421 I11 SVS I 11 2N 0 15/07/2011 243421 I11 SVE I 11 2N 0 15/07/2011 243421 I11 BV I 11 2N 0 08/07/2011 242852 K11BV K 11 2N 0 14/06/2011 239880 G16 BV G 16 2S 0 16/06/2011 240124 I17 I 17 2S 3.4 0 24/05/2010 199763 J7 BV J 7 2N 0 28/10/2011 254891 F11 SVE F 11 1 0 08/11/2010 217789 M8 M 8 2N 3.7 0 06/06/2011 238884 L7 Marl SW L 7 2N 0 20/01/2011 224432 F13 F 13 1 0 11/07/2011 242714 H9 WALL H 9 2N 0 14/06/2011 239880 H16 SV H 16 2S 0 11/07/2011 242714 H8 WALL H 8 2N 0 06/07/2011 242153 L9 SV W L 9 2N 0 24/08/2010 209399 J13 TP2 J 13 2S 2.2 0 15/09/2010 211994 H14 Trial BV H 14 2S 0 27/09/2011 251190 C16 BV (CS) C 16 1 0 06/12/2011 259469 M8 BV M 8 2N 0 01/08/2011 244972 H12 BV L H 12 2S 0 11/05/2011 236127 K10 K 10 2N 2m 0 08/09/2011 248818 K5 BV 2.8M K 5 1 2.8 0 20/01/2011 224432 E13 E 13 1 0 24/05/2010 199763 J8 J 8 2N 0 19/09/2011 250154 G15 BV G 15 2S 0 28/07/2010 206893 I10 Trial I 10 2N 0 11/05/2011 236127 I9 I 9 2N 2m 0 13/05/2010 198957 L7 BV L 7 2N 0 01/08/2011 244972 H12 BV U H 12 2S 0 19/09/2011 250154 G14 BV G 14 2S 0 03/08/2011 245225 G11 BV G 11 2S 0 01/08/2011 244975 I10 BV I 10 2N 0 08/09/2011 248818 L5 BV 2.8M L 5 1 2.8 0 30/08/2011 248118 G8 BV G 8 2N 0 30/08/2011 248118 H7 BV H 7 2N 0 13/05/2010 198957 K7 BV2 K 7 2N 0 06/12/2011 259541 L6 3.0 L 6 2N 3 0 01/08/2011 244972 H12 SVE H 12 2S 0 01/08/2011 244975 H10 BV H 10 2S 0 01/08/2011 244975 H11 BV H 11 2S 0 31/08/2011 248299 B22 6.0M B 22 1 6 0 20/01/2011 224432 E12 E 12 1 0 06/12/2011 259478 L5 ZONE 2 4.0M L 5 2N 4 0 30/11/2011 258839 L8 SVW 2.2M L 8 2N 2.2 0 06/12/2011 259497 M7 TRENCH BV M 7 2N 0 06/12/2011 259469 M8 SV W M 8 2N 0 06/12/2011 259469 M9 BV M 9 2N 0 06/12/2011 259469 M9 SV W M 9 2N 0 08/09/2010 211302 I15 Trial BV I 15 2S 0 12/08/2010 208691 J13 Trial BV Sample J 13 2S 0 07/07/2011 242275 K12 K 12 2S 0 18/04/2011 233858 K8 Zone 2N BV K 8 2N 0 14/06/2011 239880 H16 BV H 16 2S 0 15/07/2011 243421 I12 SVS I 12 2S 0 03/08/2011 245225 G11 SVE G 11 2S 0 31/08/2011 248300 E17 5M E 17 2S 5 0 01/12/2010 220489 TP D16a D 16 a 2S 2.5 0 07/07/2011 242275 J12 BV J 12 2S 0 21/07/2010 206314 L8 BV L 8 2N 0 30/08/2011 248118 G10 BV G 10 1 0 03/08/2011 245225 G12 SVE G 12 2S 0 01/08/2011 244975 I11 BV I 11 2S 0 23/09/2011 250748 F15 TRENCH F 15 2S 0 30/09/2011 251696 E14 BV E 14 1 0 14/05/2010 199157 K7 TBV K 7 2N 0 07/11/2011 255889 L15 SVW L 15 3 0 02/11/2011 255401 G19 2.5M (CS) G 19 2S 2.5 0 12/01/2011 223851 E14 A E 14 a 1 2.4 0 25/10/2011 254335 F17 3.9M F 17 2S 3.9 0 15/07/2011 243421 I10 SVE I 10 2N 0 13/06/2011 239401 K15 Pile Base K 15 2S 0 01/12/2010 220493 TP E16a E 16 a 2S 2.5 0 5m from top of 13/05/2011 236575 K9 trial sample in gault K 9 2N gault 0 30/09/2011 251696 C15 BV C 15 1 0 30/06/2011 241798 I8 B BV I 8 2N 0 23/09/2011 250748 F15 BV F 15 2S 0 28/10/2011 254891 L5 BV L 5 1 0 30/08/2011 248118 G9 BV G 9 1 0 12/04/2010 195725 K16 K 16 3 2.9 0 14/05/2010 199157 K7 SV1 K 7 2N 0 8m from top of 13/05/2011 236575 J9 trail sample in gault J 9 2N gault 0 02/06/2011 238165 I14 BV I 14 2S 3 0 08/11/2010 217800 M9 M 9 2N 3.4 0 14/05/2010 199157 K7 SV2 K 7 2N 0 05/07/2010 204070 I8 BV I 8 2N 0 12/08/2010 208691 K13 Trial BV Sample K 13 2S 0 07/10/2011 252135 F16 2.65M F 16 2S 2.65 0 28/10/2011 254855 G17 3.1M (CS) G 17 2S 3.1 0 01/12/2010 220493 TP E17 E 17 2S 2 0 02/11/2011 255404 H18 3.5M H 18 2S 3.5 0 01/08/2011 244975 I12 SVE I 12 2S 0 06/12/2011 259497 M7 TRENCH SVE M 7 2N 0 26/09/2011 250862 I16 BV (CS) I 16 2S 0 15/07/2011 243421 I12 SVE I 12 2S 0 01/11/2011 255202 K17 2.5M K 17 3 2.5 0 24/08/2010 209399 J12 TP1 J 12 2S 1.8 0 18/04/2011 233858 J7 Zone 2N BV J 7 2N 0 28/06/2010 203772 L7 SV B L 7 2N 0 27/04/2011 234979 J8 2 BV J 8 2N 0 12/01/2011 223851 D15 A D 15 A 1 2.45 0 20/04/2011 234538 L8 TP L 8 2N 0.6 0 30/06/2011 241798 H8 2N BV H 8 2N 0 27/09/2011 251180 E15 BV E 15 1 0 19/09/2011 250154 G14 SV E 2 G 14 2S 0 19/09/2011 250154 G14 SV E 1 G 14 2S 0 27/04/2011 234979 K8 2 BV K 8 2N 0 13/05/2011 236129 L10 BV L 10 2N 0 30/06/2011 241798 H9 2N BV H 9 2N 0 06/06/2011 238884 H14 SV Trench H 14 2S 0 14/06/2011 239880 H15 BV H 15 2S 0 0.5m from top 13/05/2011 236575 I9 trial sample in gault I 9 2N of gault 0 10/11/2011 256349 C17 SVN C 17 1 0 02/11/2011 255401 G18 3.5M G 18 2S 3.5 0 01/12/2010 220489 TP D17 D 17 2S 3 0 29/10/2010 216821 H17 H 17 2S 2 0 11/10/2011 252148 G11 BV G 11 1 0 19/09/2011 250160 D24 5.5M D 24 3 5.5 0 19/09/2011 250154 G15 SV E G 15 2S 0 27/04/2011 235158 K10 BV K 10 2N 0 4m from top of 13/05/2011 236575 L9 trail sample in gault L 9 2N gault 0 27/04/2011 234979 K7 FACE VALIDATION K 7 2N 0 28/10/2011 254891 L5 SVN L 5 1 0 19/09/2011 250160 D23 5.5M D 23 3 5.5 0 14/05/2010 199157 K8 TBV K 8 2N 0 27/04/2011 235158 J9 BV J 9 2N 0 19/09/2011 250160 E24 5.5M E 24 3 5.5 0 06/06/2011 238884 H14 SV2 Trench H 14 2S 0 15/09/2010 211994 H14 H 14 2S 0.5 0 28/06/2010 203772 L7 L 7 2N 10m 0 11/05/2011 236127 J10 J 10 2N 2m 0 19/09/2011 250156 G10 BV 2S G 10 1 0 18/03/2011 230930 I6 Zone 2N BV I 6 2N 0 31/03/2011 232310 J7 Zone 2N BV J 7 2N 0 19/09/2011 250156 G12 BV 2S G 12 2S 0 06/07/2011 242153 L10 SV W L 10 2N 0 03/08/2011 245228 G8 BV G 8 1 0 03/08/2011 245228 H7 BV H 7 1 0 19/09/2011 250156 G9 BV 2S G 9 1 0 19/09/2011 250156 G11 BV 2S G 11 1 0 28/10/2011 254891 F11 BV F 11 1 0 03/08/2011 245225 G12 BV G 12 2S 0 16/07/2010 205918 L11 BV L 11 2N 0 08/07/2011 242852 J13 SV E J 13 2S 0 13/06/2011 239401 K14 Pile Base K 14 2S 0 08/07/2011 242852 K12 SV SW K 12 2S 0 18/04/2011 233858 K7 Zone 2N BV K 7 2N 0 09/12/2010 221370 TP F11 F 11 1 2.8 0 11/10/2011 252148 E13 SVE E 13 1 2000 03/08/2011 245225 G13 SVE G 13 2S 0 26/08/2010 210115 J14 Trial BV J 14 2S 0 18/04/2011 233858 J7 Drainage Trench SV J 7 2N 0 18/04/2011 233858 J8 Zone 2N BV J 8 2N 0 06/06/2011 237754 L8 Sidewall Validation L 8 2N 0 26/09/2011 250862 I15 BV I 15 2S 0 06/06/2011 237754 L7 Sidewall Validation L 7 2N 0 08/07/2011 242852 J13 BV J 13 2S 0 29/06/2011 241566 L10B BV L 10 2N 0 06/06/2011 238884 L6 Marl SW L 6 2N 0 23/09/2011 250748 G13 BV G 13 2S 0 14/04/2010 195983 BV J16 J 16 2S 0 18/04/2011 233858 J7 Drainage Trench BV2 J 7 2N 0 12/04/2010 195725 K15 K 15 2S 2.7 0 14/07/2010 205640 L10 Trial L 10 2N 0 07/11/2011 255890 M5 WELL BASE M 5 2N 0 01/12/2010 220493 TP E16b E 16 b 2S 2.5 0 06/06/2011 238884 L8 Marl SW L 8 2N 0 28/06/2010 203772 L7 BV A L 7 2N 0 28/06/2010 203772 L7 SV C L 7 2N 0

Validation reports colour devided revised SV, BV, TP worksheet B_HB.xlsx/Revised SV, BV, TP validations 20/22 Sum of Indane, 1-ethyl- Unidentified 3-methylbenzene, 1- aromatic ethyl-3- hydrocarbon Unidentified methylbenzene, TPH 1-ethyl-3- Glycerol Benzo(a) Chlorome containing O Dodecanoic Aliphatic C8-14, 1-ethyl-3- ethylmeth methylbe tricaprylat anthracen thylpheno and CI circa Acid isooctyl hydrocarbon methylbenzene, 1-ethyl- Report Column ylphenol nzene Squalene e e l C7 ester circa C30 4-methylbenzene Report Date Number BV Reference Row Column Letters Zone Depth µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg 19/08/201107/09/2011 246822249094 B20F19 4.4M1.6M BF 2019 2S 1.64.4 0 18/04/2011 233858 I8 Zone 2N BV I 8 2N 0 08/11/2011 256023 K15 BV K 15 2S 0 24/11/2010 219458 L4 L 4 1 4.5 0 08/11/2010 217793 M6 M 6 2N 3.7 0 14/05/2010 199157 K8 SV1 K 8 2N 0 28/06/2010 203772 K7 BV A K 7 2N 0 28/06/2010 203772 K8 VS K 8 2N 0 28/06/2010 203772 L7 SV A L 7 2N 0 28/06/2010 203772 K7 SV A K 7 2N 0 28/06/2010 203772 L7 SV D L 7 2N 0 19/08/2011 246822 C19 2.0M C 19 2S 2 0 26/08/2010 210115 TP J14 J 14 2S 1 0 13/05/2011 236129 L22 L 22 3 3.3m 0 31/03/2011 232316 K5 SV A (Trial) K 5 1 0 23/11/2010 219461 L6 L 6 2N 4.5 0 23/11/2010 219461 M10 M 10 2N 3.5 0 28/06/2010 203772 K7 SV B K 7 2N 0 05/04/2011 232770 K6 Zone 1 BV K 6 1 0 23/11/2010 219456 N3 N 3 1 4.5 0 20/05/2011 237208 L8 trial sample in gault L 8 2N 7.5 0 23/11/2010 219461 M11 M 11 2N 4.5 0 06/12/2011 259497 M7 TRENCH SVW M 7 2N 0 07/11/2011 255889 L14 SVW L 14 2S 0 14/07/2010 205640 J8 BV J 8 2N 0 24/11/2010 219618 N4 N 4 1 4.5 0 31/08/2011 248120 K5 BV K 5 2N 0 24/11/2010 219618 N6 N 6 2N 4.5 0 24/11/2010 219618 N5 N 5 2N 4.5 0 24/11/2010 219618 N7 N 7 2N 4.5 0 09/02/2011 226719 H6 CS H 6 1 0 24/11/2010 219618 M7 M 7 2N 4.5 0 31/08/2011 248120 J6 BV J 6 2N 0 31/08/2011 248120 I6 BV I 6 2N 0 24/11/2010 219619 TPK6 K 6 1 4.57 0 18/11/2010 218834 TPI6 I 6 1 4.7 0 20/05/2011 237208 L7 trial sample in marl L 7 2N 7.5 0 20/05/2011 237414 L7 BV 226 576 L 7 2N 4.5 0 07/11/2011 255889 L15 2M L 15 3 2 0 10/11/2011 256346 A18 SVS A 18 1 0 10/11/2011 256349 C17 SVSW C 17 1 0 11/10/2011 252148 F12 SVE F 12 1 0 24/08/2010 209399 J13 TP1 J 13 2S 0.5 0 01/11/2011 255206 K20 1.5M K 20 3 1.5 0 06/12/2011 259541 M8,L8,L7 0.5 L/M 7/8 2N 0.5 0 24/06/2011 240637 K11 SV K 11 2N 0 01/11/2011 255206 K19 2.5M K 19 3 2.5 0 25/10/2011 254129 H20 2.1M H 20 2S 2.1 0 28/10/2011 254858 I19 1.1M (CS) I 19 3 1.1 0 02/11/2011 255406 J20 4.0M (CS) J 20 3 4 0 10/11/2011 256349 B17 SVN B 17 1 0 02/06/2011 238165 L9 BV L 9 2N 4 0 11/10/2011 252148 F12 BV F 12 1 0 20/05/2011 237414 K6 BV Drain Box K 6 1 3 0 07/07/2011 242275 J12 SV S J 12 2S 0 02/06/2011 238165 J14 BV J 14 2S 3 0 12/09/2011 249095 E18 4.4M F 18 2S 4.4 0 20/05/2011 237414 L8 BV 225 558 L 8 2N 4.5 0 19/10/2011 253608 E19 SVS E 19 2S 0 02/06/2011 238165 L8 BV L 8 2N 4 0 11/10/2011 252148 F12 SVW F 12 1 0 08/07/2011 242852 K12 BV K 12 2S 0 07/07/2011 242275 J12 SV E J 12 2S 0 02/11/2011 255404 H19 3.5M H 19 2S 3.5 0 19/08/2011 246823 D18 2.5M D 18 2S 2.5 0 07/07/2011 242275 J12 SV W J 12 2S 0 24/06/2011 240637 K9 BV K 9 2N 0 31/08/2011 248299 B20 5.5M B 20 1 5.5 0 01/11/2011 255202 K18 2.0M K 18 3 2 0 08/07/2011 242852 J13 SV S J 13 2S 0 31/03/2011 232316 K5 SV B (Trial) K 5 1 0 09/12/2010 221373 TP F13 F 13 2S 2.3 0 20/01/2011 224618 F16 A F 16 a 2S 1.4 0 20/01/2011 224618 F16 B F 16 b 2S 1.2 0 01/12/2010 220489 TP D16b D 16 b 2S 2.5 0 05/04/2011 232770 K6 Zone 1 ZN BV K 6 1 0 10/11/2011 256346 A17 SVE A 17 1 0 10/11/2011 256346 A17 SVN A 17 1 0 12/08/2011 246185 B17 2.5M B 17 1 2.5 0 10/11/2011 256349 B17 BV B 17 1 0 10/11/2011 256349 B17 SVS B 17 1 0 22/08/2011 247012 B18 4.7 B 18 2S 4.7 0 22/08/2011 247012 B19 5.2 B 19 2S 5.2 0 31/08/2011 248299 B21 4.9M B 21 1 4.9 0 10/11/2011 256349 C17 BV C 17 1 0 10/11/2011 256349 C17 SVNE C 17 1 0 19/08/2011 246822 C20 5.5M C 20 2S 5.5 0 19/08/2011 246823 C21 4.9M C 21 2S 4.9 0 08/04/2010 195540 C22 C 22 2S 2.2 0 19/07/2011 243419 C23 4M C 23 1 4 0 12/04/2010 195723 C24 C 24 1 2.5 0 12/01/2011 223853 D14 D 14 1 1.45 0 27/09/2011 251180 D14 BV D 14 1 0 12/01/2011 223851 D15 B D 15 B 1 2.4 0 27/09/2011 251180 D15 BV D 15 1 0 19/08/2011 246822 D19 1.0M D 19 2S 1 0 12/09/2011 249223 D20 4.9M D 20 2S 4.9 0 08/09/2011 249227 D21 4.6M D 21 2S 4.6 0 22/08/2011 247009 D22 4.5 D 22 2S 4.5 0 21/11/2011 257595 D25 5m D 25 3 5 0 12/01/2011 223851 E14 B E 14 b 1 2.2 0 12/01/2011 223853 E15 A E 15 a 1 3.65 0 12/01/2011 223853 E15 B E 15 b 1 2.6 0 27/09/2011 251190 E16 BV (CS) E 16 2S 0 12/09/2011 249231 E20 4.7M E 20 2S 4.7 0 12/09/2011 249223 E21 4.9M E 21 2S 4.9 0 19/08/2011 246997 E22 4.5M E 22 2S 4.5 0 23/08/2011 247000 E23 4.5M E 23 3 4.5 0 12/04/2010 195723 E25 E 25 3 0.7 0 20/01/2011 224432 F11 F 11 1 0 20/01/2011 224432 F12 F 12 2S 0 11/10/2011 252148 F13 SVE F 13 1 0 23/09/2011 250748 F14 SV W (CS) F 14 2S 0 24/01/2011 224621 F15 A F 15 a 2S 1.8 0 24/01/2011 224621 F15 B F 15 b 2S 1.5 0 23/09/2011 250748 F15 SV S F 15 2S 0 23/09/2011 250748 F15 SV W F 15 2S 0 25/10/2011 254134 F18 2.8M (CS) F 18 2S 2.8 0 19/10/2011 253603 F19 BV F 19 2S 0 19/10/2011 253603 F19 SVE (CS) F 19 2S 0 19/10/2011 253603 F19 SVN F 19 2S 0 19/10/2011 253603 F19 SVS F 19 2S 0 28/10/2011 254852 F20 3.9M F 20 2S 3.9 0 25/10/2011 254134 F21 4.0M F 21 2S 4 0 14/09/2011 249835 F22 4.5 F 22 3 4.5 0 22/08/2011 247003 F23 4.0M F 23 3 4 0 14/09/2011 249837 F24 4.5M F 24 3 4.5 0 12/04/2010 195723 F25 F 25 3 1.5 0 14/06/2011 239880 G16 SV G 16 2S 0 02/11/2011 255401 G19 1.0M G 19 2S 1 0 25/10/2011 254129 G20 1.0M G 20 2S 1 0 25/10/2011 254129 G21 2.95M G 21 2S 2.95 0 06/09/2011 248811 G22 2.7M G 22 3 2.7 0 06/09/2011 248811 G23 2.5M G 23 3 2.5 0 06/09/2011 248811 G24 2.5M G 24 3 2.5 0 21/11/2011 257595 G25 1m G 25 3 1 0 21/04/2010 196655 H15 BV H 15 2S 4.0m 0 13/06/2011 239402 H17 H 17 2S 0 07/10/2011 252167 H21 3.5M H 21 3 3.5 0 28/09/2011 250856 H22 3.0M H 22 3 3 0 07/10/2011 252163 H23 2.5M H 23 3 2.5 0 16/11/2011 257084 H24 (CS) H 24 3 0 24/06/2011 240637 I10 SV I 10 2N 0 26/09/2011 250862 I15 SVE I 15 2S 0 26/09/2011 250862 I16 SVE I 16 2S 0 02/11/2011 255408 I18 3.7M I 18 2S 3.7 0 07/10/2011 252139 I20 3.5M I 20 3 3.5 0 11/10/2011 252525 I21 3.9 I 21 3 3.9 0 11/10/2011 252525 I22 3.1 I 22 3 3.1 0 27/09/2011 251176 I23 2.6M I 23 3 2.6 0 16/11/2011 257084 I24 (CS) I 24 3 0 11/07/2011 242714 I6 WALL I 6 2N 0 31/03/2011 232310 I6 Zone 1 BV I 6 1 0 31/03/2011 232310 I7 Zone 1 BV I 7 1 0 31/03/2011 232310 I7 Zone 2N BV I 7 2N 0 08/07/2011 242852 J13 SV W J 13 2S 0 28/10/2011 254852 J17 1.5M J 17 2S 1.5 0 28/10/2011 254852 J17 2.5M (CS) J 17 2S 2.5 0 02/11/2011 255408 J18 2.8M J 18 3 2.8 0 02/11/2011 255406 J19 1.9M J 19 3 1.9 0 02/11/2011 255406 J19 3.8M (CS) J 19 3 3.8 0 02/11/2011 255406 J20 2.8M J 20 3 2.8 0 28/10/2011 254858 J21 2.6M J 21 3 2.6 0 17/10/2011 252988 J22 2.5M J 22 3 2.5 0 17/10/2011 252988 J23 2.5M J 23 3 2.5 0 16/11/2011 257084 J24 (CS) J 24 3 0 11/07/2011 242714 J6 WALL J 6 1 0 31/03/2011 232310 J6 Zone 1 BV J 6 1 0 18/03/2011 230930 J6 Zone 2N BV J 6 2N 0 18/04/2011 233858 J7 Drainage Trench BV J 7 2N 0 18/04/2011 233858 J7 Drainage Trench SV2 J 7 2N 0 23/06/2010 203335 J7 VS J 7 2N 0 11/07/2011 242412 K13 5.4M K 13 2S 5.4 0 21/04/2010 196655 K14 BV K 14 2S 4.0m 0 19/04/2010 196515 K16 BV 6 K 16 3 0 01/11/2011 255206 K20 2.5M (CS) K 20 3 2.5 0 28/10/2011 254855 K21 3.1M K 21 3 3.1 0 27/09/2011 250882 K22 2.7M K 22 3 2.7 0 17/10/2011 252988 K23 2.5M K 23 3 2.5 0 16/11/2011 257084 K24 (CS) K 24 3 0 11/07/2011 242714 K5 WALL K 5 1 0 08/11/2011 256029 L10 0.5 L 10 2N 0.5 0 28/03/2011 231688 L12 L 12 2N 3.2 0 30/03/2011 232134 L14 L 14 2S 3.4 0 16/11/2011 257081 L17 (CS) L 17 3 0

Validation reports colour devided revised SV, BV, TP worksheet B_HB.xlsx/Revised SV, BV, TP validations 21/22 Sum of Indane, 1-ethyl- Unidentified 3-methylbenzene, 1- aromatic ethyl-3- hydrocarbon Unidentified methylbenzene, TPH 1-ethyl-3- Glycerol Benzo(a) Chlorome containing O Dodecanoic Aliphatic C8-14, 1-ethyl-3- ethylmeth methylbe tricaprylat anthracen thylpheno and CI circa Acid isooctyl hydrocarbon methylbenzene, 1-ethyl- Report Column ylphenol nzene Squalene e e l C7 ester circa C30 4-methylbenzene Report Date Number BV Reference Row Column Letters Zone Depth µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg 16/11/201107/09/2011 257081249094 F19L18 4.4M(CS) FL 1819 2S3 4.4 0 16/11/2011 257081 L19 (CS) L 19 3 0 16/11/2011 257081 L20 (CS) L 20 3 0 16/11/2011 257081 L21 (CS) L 21 3 0 08/11/2010 217795 L5 L 5 1 3.5 0 28/10/2011 254891 L5 SVW L 5 1 0 06/12/2011 259483 L5 Z1 BV L 5 1 0 06/12/2011 259483 L5 Z1 SVE L 5 1 0 06/12/2011 259483 L5 Z1 SVN L 5 1 0 06/12/2011 259483 L5 Z1 SVW L 5 1 0 06/12/2011 259483 L5 Z2 SVN L 5 2N 0 13/06/2011 239578 L6 BV 4.0m L 6 2N 4 0 31/03/2011 232316 L6 SV (Trial) L 6 2N 0 13/06/2011 239578 L7 BV 4.0m L 7 2N 4 0 08/11/2011 256029 L9 0.5 L 9 2N 0.5 0 08/11/2010 217795 M4 M 4 1 3.92 0 08/11/2010 217797 M5 M 5 2N 3.9 0 08/11/2010 217797 N4 N 4 1 1.5 0 09/12/2010 221370 TP E12 E 12 1 2.5 0 09/12/2010 221373 TP E13 E 13 1 2.8 0 09/12/2010 221370 TP F12 F 12 1 2.3 0 26/09/2011 250862 I16 SVS I 16 2S 0 30/09/2011 251696 E14 SV WEST E 14 1 0 14/05/2010 199157 K8 SV2 K 8 2N 0 30/11/2011 258839 K8 BV 2.4M K 8 2N 2.4 0 15/08/2011 246538 I12 BV I 12 2S 0 30/11/2011 258839 L8 GAULT 3.8M L 8 2N 3.8 0 01/08/2011 244972 H12 SVS H 12 2S 0 01/08/2011 244972 H12 SVW H 12 2S 0 28/07/2010 206893 H10 Trial H 10 2S 0 11/10/2011 252148 E13 BV E 13 1 0 17/11/2011 257086 G15 1.68M G 15 2S 1.68 0 17/11/2011 257086 H15 3.54M H 15 2S 3.54 0 17/11/2011 257086 H16 3.57M H 16 2S 3.57 0 24/06/2011 240637 I9 BV I 9 2N 0 14/07/2010 205640 J7 BV J 7 2N 0 24/06/2011 240637 K10 BV K 10 2N 0 11/07/2011 242412 L13 5.4M L 13 2N 5.4 0 02/09/2011 248595 F12SVE F 12 2S 0 02/09/2011 248595 F12SVN F 12 2S 0 02/09/2011 248595 F12SVS F 12 2S 0 08/07/2010 205069 K7 SV A K 7 2N 0 08/07/2010 205069 K7 SV B K 7 2N 0 08/07/2010 205069 L7 SV A L 7 2N 0 08/07/2010 205069 L7 SV B L 7 2N 0 08/07/2010 205069 L7 SV C L 7 2N 0 08/07/2010 205069 L7 SV D L 7 2N 0 08/07/2010 205069 K7 BV A K 7 2N 0 08/07/2010 205069 K8 VS K 8 2N 0 08/07/2010 205069 L7 L 7 2N 10m 0 08/07/2010 205069 L7 BV A L 7 2N 0 16/12/2010 221996 TP D16B D 16 b 2S 0 16/12/2010 221996 TP D17 D 17 2S 0 16/12/2010 221994 TP E16A E 16 2S 0

Number of samples 0 0 0 0 0 0 0 0 0 419 Minimum value 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Maximum value 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2000.00 Second highest value #NUM! #NUM! #NUM! #NUM! #NUM! #NUM! #NUM! #NUM! #NUM! 0.00

Range 0- 0 0- 0 0- 0 0- 0 0- 0 0- 0 0- 0 0- 0 0- 0 0- 2000

Average concentration 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 4.77 Number of exceedances 0 0 0 0 0 0 0 0 0 0 % above assessment criteria #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! 0.00 Assessment criteria 92.8 - NA NA NA 31100.0 - NA NA 16000.0

Surrogat e Atkins Source of 2009 Surrogoate SSV for assessment SSV, Not Derived TPH aromatic C10- criteria benzene - - - volatile SSV - - - C12 Notes Coloured text from original spreadsh hb eet Across different zones informatio n enetered for zone area

Validation reports colour devided revised SV, BV, TP worksheet B_HB.xlsx/Revised SV, BV, TP validations 22/22

Hauxton Post-Remediation Human Health Risk Assessment

C.2. Bentonite Wall Validation GQRA

Summary Table of Exceedances from BW Investigation and Val soil

Contaminant Units SSV value SSV Source No. Samples No. Exceedances Date Report No. BV Ref. Zone Depth Conc. 14/09/2011 249462 G9 BV BW 1 29 14/09/2011 249462 H7 BV BW 1 520 31/08/2011 248121 I6 SV BW 1 31 31/08/2011 248121 G10 BV BW 2N 81 1,2-Dichloroethane µg/kg 3 Atkins SSV 33 8 (33) 31/08/2011 248121 H6 BV BW 2N 35 31/08/2011 248121 I6 BV BW 2N 1200 31/08/2011 248301 J6 BV BW 2N 10 02/09/2011 248595 K5BWBV 2N 110 14/09/2011 249462 G8 BV BW 1 180 14/09/2011 249462 G8 SV BW 1 12 06/12/2010 220099 BHG9 BENTONITE 1 2.5 7 06/12/2010 220099 BHG9 1 4.5 8 14/09/2011 249462 G9 BV BW 1 46 14/09/2011 249462 G9 SV BW 1 40 Cis-1,2-Dichloroethylene µg/kg 0.5 Surrogate Atkins SSV (Vinyl Chloride) 33 12 (33) 29/11/2010 220115 BHH7 1 0.69-4.5 41 14/09/2011 249462 H7 SV BW 1 27 31/08/2011 248121 H6 BV BW 2N 88 31/08/2011 248121 I6 BV BW 2N 300 02/09/2011 248595 K5BWBV 2N 11 10/12/2010 220113 BHG11 2S 5 13 14/09/2011 249462 H7 BV BW 1 1300 31/08/2011 248121 G10 SV BW 2S 1600 24/11/2010 219615 G8 BWW 1 2.5 3500 Tetrachloroethylene µg/kg 447000 Atkins SSV 33 0 31/08/2011 248121 G10 BV BW 2N 4700 06/12/2010 220099 BHG9 1 4.5 4700 14/09/2011 249462 G8 BV BW 1 7600 14/09/2011 249462 G9 SV BW 1 16000 Toluene µg/kg 3000 Hauxton SSV 33 1 24/11/2010 219615 G8 BWW 1 2.5 170000 31/08/2011 248121 G10 SV BW 2S 110 14/09/2011 249462 H7 SV BW 1 120 14/09/2011 249462 G9 BV BW 1 140 31/08/2011 248121 H6 BV BW 2N 150 31/08/2011 248121 I6 BV BW 2N 150 14/09/2011 249462 H7 BV BW 1 260 Trichloroethylene µg/kg 354000 Atkins SSV 33 0 24/11/2010 219615 G8 BWW 1 2.5 400 31/08/2011 248121 G10 BV BW 2N 440 14/09/2011 249462 G9 SV BW 1 960 10/12/2010 220113 BHG11 2S 5 1400 06/12/2010 220099 BHG9 1 4.5 2200 14/09/2011 249462 G8 BV BW 1 3400 Vinyl chloride monomer µg/kg 0.5 Hauxton SSV 33 0 (33) SSV value below the LOD, no samples above LOD Xylene (Total) µg/kg 2500 Hauxton SSV 33 1 24/11/2010 219615 G8 BWW 1 2.5 25000 1-(2-Chloroethoxy)-2-(o- µg/kg 5 Derived SSV 1 1 31/08/2011 248121 G10 SV BW 2S 3000 Tolyloxy)-ethane

Validation Reports Colour Divided_P_HW/BW Summary 1/4 Summary Table of Exceedances from BW Investigation and Val soil

Number % above Source of of Minimum Maximum Second Average Number of assessment Assessment assessment Determinands Units samples value value highest value Range concentration exceedances criteria criteria criteria Electrical Conductivity µS/CM 33 1800 6900 5300 1800- 6900 2800 0 0 - - pH 33 8.3 12.5 12.3 8.3- 12.5 11 0 0 - - Moisture % 33 11 58 53 11- 58 24 0 0 - - Dimefox µg/kg 33 10 10 10 10- 10 10 0 0 NA Not volatile Ethofumesate µg/kg 33 10 5000 4700 10- 5000 378 0 0 NA Not volatile Hempa µg/kg 33 10 7600 1700 10- 7600 395 0 0 NA Not volatile Schradan µg/kg 33 10 2000 1416 10- 2000 244 0 0 NA Not volatile Simazine µg/kg 33 10 2300 140 10- 2300 88 0 0 NA Not volatile Dicamba µg/kg 33 10 90 50 10- 90 16 0 0 NA Not volatile Phenoxy Acetic acid herbicide: Dichlorprop µg/kg 33 10 70 50 10- 70 17 0 0 NA Not volatile Phenoxy Acetic acid herbicide: MCPA µg/kg 33 10 2200 940 10- 2200 147 0 0 NA Not volatile Phenoxy Acetic acid herbicide: Mecoprop µg/kg 33 10 1100 500 10- 1100 100 0 0 NA Not volatile Surrogate Atkins SSV 2,4,6- (Pentachlorophe Trichlorophenol µg/kg 33 100 3100 3100 100- 3100 304 0 0 16000 nol) 2-Methyl-4,6- dinitrophenol µg/kg 33 100 100 100 100- 100 100 0 0 NA Not volatile 4-Chloro-2- methylphenol µg/kg 33 100 13000 7200 100- 13000 1698 0 0 NA Not volatile Bis (2- chloroethyl) ether µg/kg 33 100 22000 10000 100- 22000 2428 0 0 NA Not volatile Phenol µg/kg 33 100 100 100 100- 100 100 0 0 78000 Hauxton SSV Surrogate Atkins 1,2- SSV Dichlorobenzene µg/kg 33 5 1000 960 5- 1000 105 0 0 1500 (chlorobenzene) 1,2- Dichloroethane µg/kg 33 5 1200 520 5- 1200 75 1 1100 Atkins SSAC

Cis-1,2- Dichloroethylene µg/kg 33 5 300 250 5- 300 38 0 28900 Atkins SSAC Cyclohexanone µg/kg 33 10 500 100 10- 500 37 0 0 NA Not volatile Tetrachloroethyl ene µg/kg 33 5 16000 7600 5- 16000 1260 0 447000 Atkins SSAC Toluene µg/kg 33 1 170000 410 1- 170000 5216 0 216000000 Atkins SSAC Trichloroethylen e µg/kg 33 5 3400 2200 5- 3400 308 0 36 35400 Atkins SSAC Vinyl chloride monomer µg/kg 33 5 250 50 5- 250 19 1 81.5 Hauxton SSV Xylene (Total) µg/kg 33 1 25000 110 1- 25000 774 0 18900000 Hauxton SSV 1-(2- Chloroethoxy)-2- (o-Tolyloxy)- ethane µg/kg 1 3000 3000 - 3000- 3000 3000 1 100 5 Practicable LOD Dichloromethylp henol µg/kg 2 140 2300 140 140- 2300 1220 0 0 238000 Derived SSV

Validation Reports Colour Divided_P_HW/BW summary of exceedances 2/4 BW Investigation and Val soil assessment

Phenoxy Acetic Phenoxy Acetic Phenoxy Acetic acid herbicide: acid herbicide: acid herbicide: 2,4,6- Bis (2-chloroethyl) 1,2- Electrical Conductivity pH Moisture Dimefox Ethofumesate Hempa Schradan Simazine Dicamba Dichlorprop MCPA Mecoprop Trichlorophenol 2-Methyl-4,6-dinitrophenol 4-Chloro-2-methylphenol ether Phenol Dichlorobenzene Report Date Report Number BV Reference Row Column Zone Depth µS/CM % µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg 10/12/2010 220113 BHG11 G 11 2S 5 1800 9.7 24 <10 60 <10 80 <10 <10 <10 <10 <10 <100 <100 170 <100 <100 34 29/11/2010 220115 BHI5 I 5 1 2.45-4 2200 9.5 16 <10 40 <10 50 <10 <10 <10 <10 <10 <100 <100 <100 700 <100 <5 06/12/2010 220099 BHG10b G 10b 1 3 2300 11.1 16 <10 20 <10 10 <10 <10 <10 <10 <10 <100 <100 <100 120 <100 <5 31/08/2011 248121 I6 SV BW I 6 1 2700 11.8 20 <10 5000 <10 <10 2300 10 <10 <10 40 <100 <100 300 800 <100 <25 31/08/2011 248121 H6 SV BW H 6 1 2500 11.8 21 <10 460 <10 250 100 10 <10 <10 90 <100 <100 <100 800 <100 <25 14/09/2011 249462 H7 SV BW H 7 1 2300 9.2 18 <10 <10 <10 20 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 14/09/2011 249462 G8 SV BW G 8 1 2300 11.1 19 <10 <10 280 200 <10 <10 <10 <10 150 350 <100 220 <100 <100 42 06/12/2010 220099 BHG9 MARL G 9 1 2.5 2800 11.7 20 <10 50 <10 <10 <10 <10 20 20 50 <100 <100 1000 2900 <100 <5 31/08/2011 248121 H6 BV BW H 6 2N 2500 11.2 25 <10 270 380 <10 80 20 10 <10 70 <100 <100 2200 3100 <100 <25 29/11/2010 220115 BHG8 G 8 1 03-May 2800 11.6 46 <10 70 690 587 <10 20 20 60 70 170 <100 7200 1100 <100 9 31/08/2011 248121 I6 BV BW I 6 2N 2900 9.5 20 <10 690 1700 2000 140 <10 <10 <10 30 <100 <100 3800 3400 <100 <25 14/09/2011 249462 G9 BV BW G 9 1 2500 10.4 21 <10 20 310 160 <10 10 10 230 70 <100 <100 800 8800 <100 6 BHG9 06/12/2010 220099 BENTONITE G 9 1 2.5 3000 11.9 26 <10 170 <10 50 <10 10 50 50 150 110 <100 1100 2200 <100 <5 14/09/2011 249462 H7 BV BW H 7 1 3100 8.8 19 <10 330 80 380 <10 20 20 130 60 3100 <100 7200 3500 <100 <50 31/08/2011 248121 G10 SV BW G 10 2S 2200 9.7 12 <10 250 36 <10 <10 <10 10 20 40 400 <100 600 1100 100 63 24/11/2010 219615 G8 BWW G 8 1 2.5 2300 10.9 18 <10 4700 <10 <10 <10 50 70 2200 1100 3100 <100 <100 2800 <100 1000 31/08/2011 248121 G10 BV BW G 10 2N 2700 9.8 19 <10 <10 310 720 <10 10 20 440 70 <100 <100 4100 7900 <100 960 06/12/2010 220099 BHG9 G 9 1 4.5 1800 9.7 26 <10 <10 <10 <10 <10 <10 <10 <10 50 <100 <100 6700 22000 <100 690 14/09/2011 249462 G8 BV BW G 8 1 2500 8.7 18 <10 <10 7600 540 <10 <10 <10 940 60 <100 <100 13000 3000 <100 180 14/09/2011 249462 G9 SV BW G 9 1 2600 8.4 20 <10 20 650 270 <10 10 40 350 240 210 <100 2400 10000 <100 240 10/12/2010 220113 BHG12 G 12 2S 4.5 2000 10.6 20 <10 <10 390 <10 <10 <10 <10 <10 60 <100 <100 570 230 <100 <5 02/09/2011 248595 K5BWBV K 5 2N 6900 9.5 25 <10 <10 20 <10 <10 <10 <10 10 <10 <100 <100 190 2000 <100 <5 29/11/2010 220115 BHJ5 J 5 1 0.54-5 5300 12.5 53 <10 <10 <10 <10 <10 20 <10 30 20 <100 <100 <100 260 <100 <5 31/08/2011 248301 J6 SV BW J 6 2N 2200 10.9 17 <10 <10 10 90 <10 <10 <10 <10 <10 <100 <100 <100 300 <100 <5 29/11/2010 220115 BHH6 H 6 1 1.8-5 2200 11.6 16 <10 80 220 960 <10 40 40 30 30 <100 <100 230 380 <100 8 29/11/2010 220115 BHH7 H 7 1 0.69-4.5 2900 12.3 58 <10 80 140 1416 <10 10 20 20 40 <100 <100 110 620 <100 <5 31/08/2011 248301 J6 BV BW J 6 2N 5300 11.6 32 <10 20 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 620 <100 <5 02/09/2011 248595 K5BWSV K 5 2N 2300 9 22 <10 <10 20 <10 <10 10 10 30 50 <100 <100 260 710 <100 <5 29/11/2010 220115 BHF14 F 14 2S 0.61-5 4300 12.2 42 <10 <10 <10 <10 <10 90 20 120 500 <100 <100 150 <100 <100 <5 24/11/2010 219615 G12 BWW G 12 2S 4.5 2800 10.4 20 <10 <10 50 <10 <10 <10 <10 <10 110 <100 <100 530 <100 <100 <5 10/12/2010 220113 BHF13 F 13 2S 4.5 2200 10.6 24 <10 <10 <10 130 <10 <10 <10 <10 50 <100 <100 2200 <100 <100 <5 29/11/2010 220115 BHK5 K 5 1 3-4m 1800 11.6 11 <10 20 <10 <10 <10 <10 <10 20 <10 <100 <100 <100 <100 <100 <5 24/11/2010 219458 K5 BWS K 5 1 4.5 2400 8.3 20 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5

Number of samples 33 33 33 33 33 33 33 33 33 33 33 33 33 33 33 33 33 33 Minimum value 1800.00 8.30 11.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 100.00 100.00 100.00 100.00 100.00 5.00 Maximum value 6900.00 12.50 58.00 10.00 5000.00 7600.00 2000.00 2300.00 90.00 70.00 2200.00 1100.00 3100.00 100.00 13000.00 22000.00 100.00 1000.00 Second highest value 5300.00 12.30 53.00 10.00 4700.00 1700.00 1416.00 140.00 50.00 50.00 940.00 500.00 3100.00 100.00 7200.00 10000.00 100.00 960.00 Range 1800- 6900 8.3- 12.5 11- 58 10- 10 10- 5000 10- 7600 10- 2000 10- 2300 10- 90 10- 70 10- 2200 10- 1100 100- 3100 100- 100 100- 13000 100- 22000 100- 100 5- 1000 Average concentration 2800.00 10.53 23.76 10.00 378.48 395.33 244.33 88.18 15.76 16.67 147.27 99.70 304.24 100.00 1697.88 2428.48 100.00 105.06 Number of exceedances 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 % above assessment criteria 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Assessment criteria - - - NA NA NA NA NA NA NA NA NA 16000 NA NA NA 20100000 3670000.0 Surrogate Source of Atkins SSV Surrogate Atkins assessment Not Not (Pentachlorop Hauxton SSV criteria - - - volatile Not volatile Not volatile Not volatile Not volatile volatile Not volatile Not volatile Not volatile henol) Not volatile Not volatile Not volatile SSV (chlorobenzene)

Validation Reports Colour Divided_P_HW/BW Investigation and Val soil 3/4 BW Investigation and Val soil assessment

1,2- Cis-1,2- Vinyl chloride Xylene Dichloroethane Dichloroethylene Cyclohexanone Tetrachloroethylene Toluene Trichloroethylene monomer (Total) 1-(2-Chloroethoxy)-2-(o-Tolyloxy)-ethane Dichloromethylphenol Report Date Report Number BV Reference Row Column Zone Depth µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg 10/12/2010 220113 BHG11 G 11 2S 5 <5 13 <10 8 1 1400 <5 1 29/11/2010 220115 BHI5 I 5 1 2.45-4 <5 <5 <10 8 1 <5 <5 <1 06/12/2010 220099 BHG10b G 10b 1 3 <5 <5 <10 19 4 7 <5 <1 31/08/2011 248121 I6 SV BW I 6 1 31 <25 <50 46 180 44 <25 7 31/08/2011 248121 H6 SV BW H 6 1 <25 <25 <50 100 93 35 <25 <5 14/09/2011 249462 H7 SV BW H 7 1 <5 27 <10 120 6 120 <5 <1 14/09/2011 249462 G8 SV BW G 8 1 <5 12 <10 140 9 95 <5 1 06/12/2010 220099 BHG9 MARL G 9 1 2.5 <5 <5 <10 190 8 33 <5 2 31/08/2011 248121 H6 BV BW H 6 2N 35 88 <50 220 270 150 <25 48 29/11/2010 220115 BHG8 G 8 1 03-May <5 <5 <10 270 200 17 <5 68 31/08/2011 248121 I6 BV BW I 6 2N 1200 300 <50 280 240 150 <25 54 14/09/2011 249462 G9 BV BW G 9 1 29 46 <10 320 13 140 <5 1 BHG9 06/12/2010 220099 BENTONITE G 9 1 2.5 <5 7 <10 410 62 71 <5 17 14/09/2011 249462 H7 BV BW H 7 1 520 <50 <100 1300 410 260 <50 110 140 31/08/2011 248121 G10 SV BW G 10 2S <25 <25 <50 1600 7 110 <25 6 3000 24/11/2010 219615 G8 BWW G 8 1 2.5 <250 <250 <500 3500 170000 400 <250 25000 31/08/2011 248121 G10 BV BW G 10 2N 81 <25 <50 4700 370 440 <25 80 2300 06/12/2010 220099 BHG9 G 9 1 4.5 <5 8 <10 4700 22 2200 <5 36 14/09/2011 249462 G8 BV BW G 8 1 <25 180 <50 7600 12 3400 <25 35 14/09/2011 249462 G9 SV BW G 9 1 <25 40 <50 16000 10 960 <25 15 10/12/2010 220113 BHG12 G 12 2S 4.5 <5 <5 <10 <5 2 12 <5 2 02/09/2011 248595 K5BWBV K 5 2N 110 11 <10 <5 2 56 <5 <1 29/11/2010 220115 BHJ5 J 5 1 0.54-5 <5 <5 <10 <5 75 <5 <5 <1 31/08/2011 248301 J6 SV BW J 6 2N <5 <5 <10 <5 <1 <5 <5 <1 29/11/2010 220115 BHH6 H 6 1 1.8-5 <5 <5 <10 <5 2 <5 <5 5 29/11/2010 220115 BHH7 H 7 1 0.69-4.5 <5 41 <10 <5 8 <5 <5 2 31/08/2011 248301 J6 BV BW J 6 2N 10 <5 <10 <5 3 <5 <5 <1 02/09/2011 248595 K5BWSV K 5 2N <5 <5 <10 <5 2 <5 <5 <1 29/11/2010 220115 BHF14 F 14 2S 0.61-5 <5 <5 <10 <5 4 <5 <5 <1 24/11/2010 219615 G12 BWW G 12 2S 4.5 <5 <5 <10 <5 110 <5 <5 25 10/12/2010 220113 BHF13 F 13 2S 4.5 <5 <5 <10 <5 2 <5 <5 10 29/11/2010 220115 BHK5 K 5 1 3-4m <5 <5 <10 <5 3 <5 <5 <1 24/11/2010 219458 K5 BWS K 5 1 4.5 <5 <5 <10 <5 2 <5 <5 <1

Number of samples 33 33 33 33 33 33 33 33 1 2 Minimum value 5.00 5.00 10.00 5.00 1.00 5.00 5.00 1.00 3000.00 140.00 Maximum value 1200.00 300.00 500.00 16000.00 170000.00 3400.00 250.00 25000.00 3000.00 2300.00 Second highest value 520.00 250.00 100.00 7600.00 410.00 2200.00 50.00 110.00 #NUM! 140.00 Range 5- 1200 5- 300 10- 500 5- 16000 1- 170000 5- 3400 5- 250 1- 25000 3000- 3000 140- 2300 Average concentration 74.73 37.82 37.27 1260.48 5216.18 307.88 18.64 773.97 3000.00 1220.00 Number of exceedances 1 0 0 0 0 0 1 0 0 0 % above assessment criteria 3.03 0.00 0.00 0.00 0.00 0.00 3.03 0.00 0.00 0.00 Assessment criteria 1100.0 28900.0 NA 447000.0 216000000 354000.0 81.5 189000 3001.0 238000.0 Surrogate Source of Atkins SSV assessment (Vinyl Chloride) Hauxton Hauxton GAC for surrogates identified in the criteria Atkins SSV Not volatile Atkins SSV SGV Atkins SSV SSAC SSAC DQRA Derived SSV

Validation Reports Colour Divided_P_HW/BW Investigation and Val soil 4/4

Hauxton Post-Remediation Human Health Risk Assessment

C.3. Stockpile Validation Human Health GQRA

Summary of the SummaryStockpile ofValidation the Stockpile Assessment Validation Assessment

% above Number of Minimum Maximum Second Average Number of assessment Assessment Source of Contaminant Units samples value value highest value Range concentration exceedances criteria criteria assessment criteria Electrical Conductivity µS/CM 23 2000 2700 2600 2000- 2700 2126 0 0 - - pH 23 7.8 8.9 8.8 7.8- 8.9 8.4 0 0 - - Moisture % 23 3.1 17 12 3.1- 17 7 0 0 - - Dimefox µg/kg 23 10 10 10 10- 10 10 0 0 NA Non volatile Ethofumesate µg/kg 23 10 10 10 10- 10 10 0 0 NA Non volatile Hempa µg/kg 23 10 10 10 10- 10 10 0 0 NA Non volatile Schradan µg/kg 23 10 10 10 10- 10 10 0 0 NA Non volatile Simazine µg/kg 23 10 10 10 10- 10 10 0 0 NA Non volatile Dicamba µg/kg 23 10 10 10 10- 10 10 0 0 NA Non volatile

Phenoxy Acetic acid herbicide: Dichlorprop µg/kg 23 10 10 10 10- 10 10 0 0 NA Non volatile

Phenoxy Acetic acid herbicide: MCPA µg/kg 23 10 10 10 10- 10 10 0 0 NA Non volatile

Phenoxy Acetic acid herbicide: Mecoprop µg/kg 23 10 40 30 10- 40 15 0 0 NA Non volatile

Surrogate Atkins 2,4,6- SSV Trichlorophenol µg/kg 23 100 100 100 100- 100 100 0 0 16000 (Pentachlorophenol) 2-Methyl-4,6- dinitrophenol µg/kg 23 100 100 100 100- 100 100 0 0 NA Non volatile 4-Chloro-2- methylphenol µg/kg 23 100 100 100 100- 100 100 0 0 NA Non volatile Bis (2- chloroethyl) ether µg/kg 23 100 100 100 100- 100 100 0 0 NA Non volatile Phenol µg/kg 23 100 100 100 100- 100 100 0 0 78000 Hauxton SSV

1,2- Dichlorobenzen Surrogate Atkins e µg/kg 23 5 15 5 5- 15 5 0 0 1500 SSV (chlorobenzene) 1,2- Dichloroethane µg/kg 23 5 15 5 5- 15 5 0 (23) 100 3 Atkins SSV Cis-1,2- Dichloroethylen Surrogate Atkins e µg/kg 23 5 15 5 5- 15 5 0 (23) 100 0.5 SSV (Vinyl Chloride) Cyclohexanone µg/kg 23 10 30 10 10- 30 11 0 0 - Non volatile Tetrachloroethyl ene µg/kg 23 5 15 5 5- 15 5 0 0 760 Atkins SSV Toluene µg/kg 23 1 32 3 1- 32 3 0 0 3000 Hauxton SSV Trichloroethylen e µg/kg 23 5 15 5 5- 15 5 0 0 100 Atkins SSV Vinyl chloride monomer µg/kg 23 5 15 5 5- 15 5 0 (23) 100 0.5 Atkins SSV Xylene (Total) µg/kg 23 1 3 1 1- 3 1 0 0 2500 Hauxton SSV

Summary Sheet/Stockpile Validation Results_E_HB.xlsx 2/2 Hauxton - Stockpile Validation Data Assessment Phenoxy Acetic Phenoxy Acetic Phenoxy Acetic acid herbicide: acid herbicide: acid herbicide: 2,4,6- 2-Methyl-4,6- 4-Chloro-2- Bis (2-chloroethyl) 1,2- Cis-1,2- Vinyl chloride Xylene Electrical Conductivity pH Moisture Dimefox Ethofumesate Hempa Schradan Simazine Dicamba Dichlorprop MCPA Mecoprop Trichlorophenol dinitrophenol methylphenol ether Phenol 1,2-Dichlorobenzene Dichloroethane Dichloroethylene Cyclohexanone Tetrachloroethylene Toluene Trichloroethylene monomer (Total) STOCKPILE REF Report Date Report Number Sample Reference µS/CM % µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg 21/04/2011 234667 Soil Bund 2600 8.6 7.4 <10 <10 <10 <10 <10 <10 <10 <10 <10 100 <100 <100 <100 <100 <5 <5 <5 <10 <5 32 <5 <5 1 SPJ 21/04/2011 234667 MG Marl Bund 2700 8.6 9.1 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 3 <5 <5 <1 SPO 17/10/2011 252997 SPO 2200 8.8 17 <10 10 <10 <10 <10 10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 24/10/2011 253910 S1 2100 8.6 3.1 <10 <10 <10 <10 <10 <10 <10 <10 10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 24/10/2011 253910 S2 2200 8.6 3.8 <10 <10 <10 <10 <10 <10 <10 <10 10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 24/10/2011 253910 S3 2000 8.9 4.7 <10 <10 <10 <10 <10 <10 <10 <10 10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 24/10/2011 253910 S4 2100 8.5 6.4 <10 <10 <10 <10 <10 <10 <10 <10 10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 24/10/2011 253910 S5 2000 8.3 7 <10 <10 <10 <10 <10 <10 <10 <10 10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 24/10/2011 253910 S6 2100 8.2 6.7 <10 <10 <10 <10 <10 <10 <10 <10 10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 24/10/2011 253910 S7 2100 8.3 7.2 <10 <10 <10 <10 <10 10 10 <10 30 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 24/10/2011 253917 S8 2100 8.4 8.9 <10 <10 <10 <10 <10 <10 <10 <10 20 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 24/10/2011 253917 S9 2000 8.4 6.6 <10 <10 <10 <10 <10 <10 <10 <10 20 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 Upper Sand 24/10/2011 253917 S10 2000 8.5 6.1 <10 <10 <10 <10 <10 <10 <10 <10 20 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 2 <5 <5 <1 SP 24/10/2011 253917 S11 2100 8.4 4.9 <10 <10 <10 <10 <10 10 <10 <10 20 <100 <100 <100 <100 <100 <15 <15 <15 <30 <15 <3 <15 <15 <3 24/10/2011 253917 S12 2000 8.7 4.2 <10 <10 <10 <10 <10 <10 <10 <10 20 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 24/10/2011 253917 S13 2200 8.3 8.7 <10 <10 <10 <10 <10 <10 <10 <10 20 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 24/10/2011 253917 S14 2000 8.4 4.2 <10 <10 <10 <10 <10 <10 <10 <10 20 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 24/10/2011 253922 S15 2100 8.3 8.4 <10 <10 <10 <10 <10 <10 <10 <10 40 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 24/10/2011 253922 S16 2000 8.2 12 <10 <10 <10 <10 <10 <10 <10 <10 10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 24/10/2011 253922 S17 2100 7.8 5.6 <10 <10 <10 <10 <10 <10 <10 <10 10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 24/10/2011 253922 S18 2100 8.1 4.1 <10 <10 <10 <10 <10 <10 <10 <10 10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 24/10/2011 253922 S19 2100 8.2 6.1 <10 <10 <10 <10 <10 <10 <10 <10 10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 24/10/2011 253922 S20 2000 8.1 8.6 <10 <10 <10 <10 <10 <10 <10 <10 10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1

Number of samples 23 23 23 23 23 23 23 23 23 23 23 23 23 23 23 23 23 23 23 23 23 23 23 23 23 23 Minimum value 2000.00 7.80 3.10 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 100.00 100.00 100.00 100.00 100.00 5.00 5.00 5.00 10.00 5.00 1.00 5.00 5.00 1.00 Maximum value 2700.00 8.90 17.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 40.00 100.00 100.00 100.00 100.00 100.00 15.00 15.00 15.00 30.00 15.00 32.00 15.00 15.00 3.00 Second highest value 2600.00 8.80 12.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 30.00 100.00 100.00 100.00 100.00 100.00 5.00 5.00 5.00 10.00 5.00 3.00 5.00 5.00 1.00 Range 2000- 2700 7.8- 8.9 3.1- 17 10- 10 10- 10 10- 10 10- 10 10- 10 10- 10 10- 10 10- 10 10- 40 100- 100 100- 100 100- 100 100- 100 100- 100 5- 15 5- 15 5- 15 10- 30 5- 15 1- 32 5- 15 5- 15 1- 3

Average concentration 2126.09 8.40 6.99 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 15.22 100.00 100.00 100.00 100.00 100.00 5.43 5.43 5.43 10.87 5.43 2.57 5.43 5.43 1.09 Number of exceedances 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 23 23 0 0 0 0 23 0 % above assessment criteria 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 100.00 100.00 0.00 0.00 0.00 0.00 100.00 0.00 Assessment criteria - - - NA NA NA NA NA NA NA NA NA 16000.0 NA NA NA 78000.0 1500.0 3.0 0.5 - 760.0 3000.0 100.0 0.5 2500.0 Surrogate Surrogate Atkins Atkins SSV Surrogate Atkins SSV (Vinyl Source of assessment Non Non (Pentachlorop Hauxton SSV Chloride) Hauxton Hauxton criteria - - - volatile Non volatile Non volatile Non volatile Non volatile volatile Non volatile Non volatile Non volatile henol) Non volatile Non volatile Non volatile SSV (chlorobenzene) Atkins SSV Non volatile Atkins SSV SSV Atkins SSV Atkins SSV SSV

Stockpile Validation Results_E_HB.xlsx/Stockpile Validation Soils 1/2

Hauxton Post-Remediation Human Health Risk Assessment

C.4. Treatment Bed Analysis Validation GQRA

Summary Sheet for the Treatment Bed

Second % above Source of Number of Minimum Maximum highest Average Number of assessment Assessment assessment Determinand Units samples value value value Range concentration exceedances criteria criteria criteria Dimefox µg/kg 185 0 400 0 0- 400 2 0 0 NA Non Volatile Ethofumesate µg/kg 185 0 28000 23000 0- 28000 1564 0 0 NA Non Volatile Hempa µg/kg 185 0 13000 8000 0- 13000 315 0 0 NA Non Volatile Schradan µg/kg 185 0 56000 20000 0- 56000 819 0 0 NA Non Volatile Simazine µg/kg 185 0 5100 3300 0- 5100 308 0 0 NA Non Volatile Dicamba µg/kg 185 0 3200 1100 0- 3200 72 0 0 NA Non Volatile

Phenoxy Acetic acid herbicide: Dichlorprop µg/kg 185 0 890 590 0- 890 29 0 0 NA Non Volatile Phenoxy Acetic acid herbicide: MCPA µg/kg 185 0 490000 100000 0- 490000 4163 0 0 NA Non Volatile Phenoxy Acetic acid herbicide: Mecoprop µg/kg 185 0 510000 28000 0- 510000 3198 0 0 NA Non Volatile Surrogate Atkins SSV (Pentachloro 2,4,6-Trichlorophenol µg/kg 185 0 82000 13000 0- 82000 1092 1 1 16000 phenol) 2-Methyl-4,6- dinitrophenol µg/kg 185 0 3500000 240000 0- 3500000 21610 0 0 NA Non Volatile 4-Chloro-2- methylphenol µg/kg 185 0 35000 15000 0- 35000 555 0 0 NA Non Volatile Bis(2-chloroethyl) ether µg/kg 185 0 17000 10000 0- 17000 753 0 0 NA Non Volatile

Phenol µg/kg 185 0 200 170 0- 200 2 0 0 78000 Hauxton SSV Surrogate Atkins SSV (chlorobenze 1,2-Dichlorobenzene µg/kg 185 0 1900 1900 0- 1900 82 3 2 1500 ne) 1,2-Dichloroethane µg/kg 185 0 360 250 0- 360 8 21 (185) 11 3 Atkins SSV Surrogate Atkins SSV Cis-1,2- (Vinyl Dichloroethylene µg/kg 185 0 930 490 0- 930 11 31 (185) 17 0.5 Chloride) Cyclohexanone µg/kg 185 0 0 0 0- 0 0 0 0 NA Not volatile Tetrachloroethylene µg/kg 185 0 11000 11000 0- 11000 550 31 17 760 Atkins SSV

Toluene µg/kg 185 0 1900 990 0- 1900 53 0 0 3000 Hauxton SSV Trichloroethylene µg/kg 185 0 8100 1000 0- 8100 75 13 7 100 Atkins SSV Vinyl chloride monomer µg/kg 185 0 25 17 0- 25 0 2 (185) 1 0.5 Atkins SSV

Xylene (Total) µg/kg 185 0 1300 390 0- 1300 21 0 0 2500 Hauxton SSV

Treatment Bed Analysis Results_H_HB.xls/Summary sheet 1/4 Summary Table of Exceedances from Treatment Bed Analysis

Contaminant Units SSV value SSV Source No. Samples No. Exceedances Location Date Report No. Zone Conc.

2,4,6-Trichlorophenol µg/kg 16000 Surrogate Atkins SSV (Pentachlorophenol) 185 1 TB84 16/05/2011 237754 82000

TB56 05/07/2011 242851 2N 1900 1,2-Dichlorobenzene µg/kg 1500 Surrogate Atkins SSV (chlorobenzene) 185 3 TB119 23/08/2011 248438 3 1600 TB72 20/07/2010 205782 1900 TB153 19/08/2011 247963 2S 7 TB147 07/07/2011 243413 2N 8 TB163 13/09/2011 250753 2S 9 TB61 08/06/2011 240136 2S 14 TB62 08/06/2011 240136 2S 14 TB158 19/08/2011 247963 2S 20 TB146 08/07/2011 243407 2S/2N 23 TB30 04/04/2011 233533 2N 25 TB116 30/08/2011 249082 3 28 TB8 00/01/1900 200739 1 28 1,2-Dichloroethane µg/kg 3 Atkins SSV 185 21 TB165 12/09/2011 250404 3 32 TB83 28/07/2011 245386 2S/2N 33 TB24 11/02/2011 230931 2N 34 TB164 14/09/2011 250749 2S 37 TB53 05/08/2011 246533 3 61 TB1 19/05/2010 202760 3 89 TB110 24/03/2011 232481 2N 96 TB28 31/03/2011 233097 2N 150 TB51 05/05/2011 236570 2N 220 TB72 20/07/2010 205782 250 TB33 31/03/2011 233097 2N 360 TB178 13/10/2011 253912 3 6 TB16 31/03/2011 233097 2N 43 TB22 05/01/2011 224038 2N 16 TB24 11/02/2011 230931 2N 81 TB34 12/05/2011 237409 2N 5 TB38 24/03/2011 232481 2N 36 TB51 05/05/2011 236570 2N 16 TB60 27/07/2011 245233 2S/2N 24 TB64 11/02/2011 230931 2N 83 TB74 14/06/2011 240781 2N 930 TB86 10/02/2011 230936 2N 11 TB94 02/06/2011 239619 2N 44 TB97 05/07/2011 242997 2S/2N 6 TB106 27/07/2011 245233 2N 6 TB108 31/05/2011 239065 2S/2N 6 Cis-1,2- TB110 24/03/2011 232481 2N 36 µg/kg 0.5 Surrogate Atkins SSV (Vinyl Chloride) 185 31 Dichloroethylene TB111 07/06/2011 239865 2N 7 TB115B 15/07/2011 244016 2S/2N 17 TB116 30/08/2011 249082 3 15 TB118 17/08/2011 248124 2N/2S/3 7 TB119 23/08/2011 248438 3 96 TB122 01/07/2011 242723 2S/2N 5 TB128 00/01/1900 244627 2S/2N 28 TB150 20/07/2011 244623 2S/2N 6 TB160 06/09/2011 249841 2S/3 41 TB161 00/01/1900 252537 3 13 TB165 12/09/2011 250404 3 32 Retained TB179 30/11/2011 259651 490 onsite TB156 01/09/2011 249482 2S 5 TB171 21/09/2011 251704 3 8 TB172 21/09/2011 251694 3 6 TB101 03/06/2011 239626 2N 810 TB24 11/02/2011 230931 2N 840 TB59 24/03/2011 0 2N 860 TB61 08/06/2011 240136 2S 940 TB62 08/06/2011 240136 2S 940 TB104 25/05/2011 238743 2N 940 TB102 03/06/2011 239626 2N 1100 TB30 04/04/2011 233533 2N 1100 TB76 20/09/2011 251499 3 1200 TB116 30/08/2011 249082 3 1200 TB69F 01/08/2011 246061 3 1300 TB119 23/08/2011 248438 3 1400 TB72 20/07/2010 205782 1400 TB22 05/01/2011 224038 2N 1500 TB53 05/08/2011 246533 3 1500 TB118 17/08/2011 248124 2N/2S/3 1700 Tetrachloroethylene µg/kg 760.001 Atkins SSV 185 31 TB142 18/07/2011 2445060 2S 1700 TB33 31/03/2011 233097 2N 1800 TB165 12/09/2011 250404 3 1900 TB160 06/09/2011 249841 2S/3 2200 TB110 24/03/2011 232481 2N 2700 TB147 07/07/2011 243413 2N 2800 TB93 07/09/2011 249833 3 3000 TB99 18/07/2011 244506 2S/2N 3500 TB69E 01/08/2011 246061 3 3700 Retained TB179 30/11/2011 259651 onsite 3900 TB88 20/09/2011 251499 3 4000 TB28 31/03/2011 233097 2N 5400 TB68 20/04/2011 235498 2N 5700 TB27 10/02/2011 228271 2N 11000 TB103 02/06/2011 239617 2N 11000 TB115B 15/07/2011 244016 2S/2N 100 TB38 24/03/2011 232481 2N 100 TB74 14/06/2011 240781 2N 130 TB128 00/01/1900 244627 2S/2N 150 TB114 11/08/2011 247170 3 150 TB53 05/08/2011 246533 3 170 TB162 13/09/2011 250740 2S/3 180 Trichloroethylene µg/kg 100 Atkins SSV 185 13 TB116 30/08/2011 249082 3 180 TB142 18/07/2011 2445060 2S 220 Retained TB179 30/11/2011 259651 onsite 530 TB118 17/08/2011 248124 2N/2S/3 1000 TB165 12/09/2011 250404 3 1000 TB119 23/08/2011 248438 3 8100 TB64 11/02/2011 230931 2N 17 Vinyl chloride monomer µg/kg 0.5 Hauxton SSV 185 2 (185) Retained TB179 30/11/2011 259651 25 onsite

Treatment Bed Analysis Results_H_HB.xls/Treatment Bed Summary 2/4 Hauxton Ex-situ Treatment Bed Validation Sample Human Health Assessment Appendix C.4 Phenoxy Phenoxy Phenoxy Acetic acid Acetic acid Acetic acid Bis(2- Vinyl herbicide: herbicide: herbicide: 2,4,6- 2-Methyl-4,6- 4-Chloro-2- chloroethyl) 1,2- 1,2- Cis-1,2- chloride Xylene Report Reinstatement Dimefox Ethofumesate Hempa Schradan Simazine Dicamba Dichlorprop MCPA Mecoprop Trichlorophenol dinitrophenol methylphenol ether Phenol Dichlorobenzene Dichloroethane Dichloroethylene Cyclohexanone Tetrachloroethylene Toluene Trichloroethylene monomer (Total) Location Date Number Lab Ref Zone µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg TB107 30/11/2010 221374 221374 006 Amalgamated with SP C 0 350 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TB127 04/04/2011 233536 233536 001 2S 0 0 0 0 0 0 0 170 60 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TB132 12/04/2011 234520 234520 006 2S 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TB152 28/05/2011 245380 245380 005 2S/2N 0 60 0 0 100 0 0 0 0 0 0 130 0 0 0 0 0 0 0 0 0 0 0 TB169 26/08/2011 248827 248827 003 3 0 50 0 0 0 0 0 0 0 0 0 0 200 0 0 0 0 0 0 4 0 0 0 TB17 14/06/2011 240640 240640 003 Amalgamated with SP C 0 60 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11 0 0 1 TB176 05/10/2011 252997 252997 001 2S 0 50 160 770 0 40 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TB178 13/10/2011 253912 253912 004 3 0 140 0 0 0 10 40 10 7300 0 0 35000 5000 0 0 0 6 0 0 6 0 0 4 TB2 Deviating 220670 220670 001 2N 0 20 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TB21 10/02/2011 228271 228271 001 Amalgamated with SP B 0 30 0 0 0 0 0 10 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TB41 30/03/2011 233076 233076 001 Amalgamated with SP A 0 750 0 0 30 50 10 0 100 1900 0 0 0 0 0 0 0 0 0 14 0 0 0 TB69A 18/07/2011 244348 244348 017 2N 0 8900 0 0 80 140 10 0 70 1300 0 100 100 0 0 0 0 0 0 11 0 0 0 TB3 21/07/2011 244620 244620 001 3 0 220 0 0 0 0 0 200 20 200 0 0 0 0 39 0 0 0 5 9 0 0 7 TB5 05/01/2011 224038 224038 001 2N 0 30 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 0 0 0 0 TB125 06/07/2011 243155 243155 002 2S/2N 0 710 150 0 220 0 0 0 0 0 0 0 0 0 0 0 0 0 6 0 0 0 3 TB43 03/03/2011 230138 230138 008 2N 0 120 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 4 0 0 0 TB174 07/10/2011 253271 253271 002 2S 0 240 870 1400 10 150 0 10 0 1300 0 160 110 0 0 0 0 0 7 0 0 0 0 TB175 07/10/2011 253271 253271 001 2S/3 0 220 0 0 180 220 0 20 0 0 0 0 0 0 0 0 0 0 8 0 0 0 0 TB89 12/05/2011 237183 237183 004 Amalgamated with SP A 0 90 0 0 20 0 0 6700 2300 0 0 1500 300 0 0 0 0 0 9 0 0 0 2 TB73 21/04/2011 235657 235657 004 2N 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10 0 0 0 0 TB12 21/04/2011 235657 235657 005 2N 0 30 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11 7 0 0 2 TB124 10/11/2010 218845 218845 004 2S 0 10 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11 0 0 0 0 TB157 01/08/2011 246061 246061 003 2S/3 0 110 0 0 50 40 500 9600 1900 0 0 3400 7500 0 0 0 0 0 12 0 0 0 0 TB37 12/05/2011 237183 237183 001 Amalgamated with SP A 0 290 0 0 20 0 0 0 0 0 0 0 0 0 0 0 0 0 12 4 0 0 0 TB48 23/06/2011 241752 241752 001 2N 0 420 0 0 0 0 0 30 0 840 0 0 0 0 0 0 0 0 12 21 0 0 0 TB67 23/03/2011 232310 232310 008 2N 0 60 0 0 20 0 0 0 0 0 0 0 0 0 0 0 0 0 12 0 0 0 0 TB138 01/06/2011 239396 239396 005 2N 0 2600 190 0 690 210 240 2700 1200 2500 0 0 400 0 6 0 0 0 13 12 0 0 4 TB109 16/06/2011 240921 240921 007 2N 0 5200 0 0 830 190 60 640 380 700 0 0 200 0 0 0 0 0 14 3 0 0 9 TB120 31/05/2011 239066 239066 003 Amalgamated with TB160, TB162 0 310 0 0 1400 0 0 330 0 0 0 0 0 0 0 0 0 0 16 8 0 0 0 TB15 10/05/2011 237224 237224 001 2N 0 120 0 0 90 0 0 0 0 300 0 0 0 0 0 0 0 0 18 3 0 0 0 TB20 00/01/1900 211305 211305 003 2N 0 90 0 0 260 10 0 0 0 260 0 0 0 0 0 0 0 0 18 5 0 0 1 TB6 14/06/2011 240640 240640 001 3 0 600 0 0 320 50 0 60 50 700 0 0 100 0 0 0 0 0 19 5 0 0 1 TB10 30/09/2010 214286 214286 001 2N 0 0 0 0 0 20 0 180 60 0 0 0 0 0 0 0 0 0 22 8 0 0 0 TB121 01/07/2011 242723 242723 003 Amalgamated with TB160, TB162 0 120 20 0 190 0 0 0 20 0 0 500 0 0 0 0 0 0 22 0 0 0 0 TB151 00/01/1900 239401 0 Amalgamated with SP A 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 22 1 0 0 0 TB47 24/03/2011 232481 232481 015 2N 0 590 0 0 90 30 10 0 30 0 0 0 0 0 7 0 0 0 23 2 0 0 0 TB25 12/05/2011 237409 237409 001 2N 0 1700 0 0 1700 0 0 0 0 400 0 0 0 0 0 0 0 0 24 17 0 0 2 TB40 12/05/2011 237409 237409 003 2N 0 1600 0 0 1600 0 0 600 200 1700 0 0 200 0 0 0 0 0 24 13 0 0 1 TB97 05/07/2011 242997 242997 001 2S/2N 0 110 0 0 30 0 0 90 0 0 0 0 100 0 32 0 6 0 24 5 0 0 0 TB44 04/04/2011 233536 233536 003 2N 0 2300 0 0 50 10 10 150 90 0 0 0 0 0 150 0 0 0 25 13 0 0 4 TB57 08/06/2011 240129 240129 006 2N 0 250 40 0 110 20 10 0 0 530 0 0 120 0 47 0 0 0 25 6 0 0 0 TB9 24/03/2011 232481 232481 010 2N 0 0 0 0 0 0 0 0 0 150 0 0 0 0 0 0 0 0 25 10 0 0 1 TB11 24/03/2011 232481 232481 017 2N 0 340 0 0 0 10 0 0 0 170 0 0 0 0 0 0 0 0 29 10 0 0 3 TB7 26/05/2010 201011 201011 012 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 30 130 0 0 4 TB144 07/07/2011 243409 243409 004 2S/2N 0 670 0 0 90 40 0 720 2700 120 0 0 130 0 0 0 0 0 31 1 0 0 0 TB19 13/05/2011 237411 237411 004 2N 0 780 0 0 0 80 0 210 60 500 0 0 0 0 0 0 0 0 33 2 0 0 0 TB141 16/06/2011 240921 240921 009 2S/2N 0 250 0 0 210 0 0 280 140 0 0 0 10000 0 0 0 0 0 34 0 0 0 0 TB105 08/06/2011 240136 240136 005 2S/2N 0 270 0 0 240 20 10 0 40 120 0 0 0 0 26 0 0 0 38 1 0 0 2 TB55 18/07/2011 244348 244348 013 2S 0 40 0 640 0 0 0 0 0 200 0 0 0 0 25 0 0 0 38 8 0 0 1 TB85 12/05/2011 237183 237183 003 2N 0 640 0 0 260 0 0 0 0 300 0 1000 500 0 12 0 0 0 39 5 0 0 1 TB90 04/04/2011 233533 233533 002 Amalgamated with SP A 0 60 0 0 0 10 0 110 540 0 0 0 0 0 0 0 0 0 39 3 0 0 0 TB130 12/04/2011 234517 234517 005 2S 0 530 20 0 220 20 0 0 0 0 0 0 0 0 0 0 0 0 40 0 0 0 0 TB32 10/02/2011 228271 228271 003 2N 0 140 0 0 40 10 0 20 0 0 0 0 0 0 0 0 0 0 40 4 0 0 0 TB140 17/06/2011 241130 241130 005 2S/2N 0 210 0 0 40 0 0 0 40 0 0 0 200 0 0 0 0 0 46 1 0 0 0 TB95 28/07/2011 245386 245386 006 2S 0 690 0 0 560 50 0 80 110 430 0 150 140 0 7 0 0 0 48 2 0 0 0 TB39 20/04/2011 235498 235498 002 Amalgamated with SP A 0 30 0 0 30 0 0 0 0 0 0 0 0 0 0 0 0 0 51 2 0 0 3 TB155 17/08/2011 248124 248124 006 2S/2N 0 130 0 0 40 30 40 3400 720 0 0 1000 1300 0 0 0 0 0 52 0 0 0 0 TB36 25/06/2010 204252 204252 002 2N 0 200 0 0 30 10 40 4600 340 600 0 1000 3800 0 0 0 0 0 57 8 0 0 1 TB45 24/03/2011 232481 232481 003 Amalgamated with SP A 0 0 0 0 0 100 0 50 30 0 0 0 100 0 7 0 0 0 73 2 0 0 0 TB13 30/03/2011 233076 233076 003 2N 0 50 0 0 0 40 0 0 90 230 0 0 190 0 0 0 0 0 74 6 0 0 2 TB42 23/08/2010 210561 210561 003 2S 0 4500 0 0 130 0 0 700 100 310 0 120 100 0 48 0 0 0 76 16 0 0 8 TB75 18/07/2011 244348 244348 016 2S/2N 0 28000 40 0 490 140 0 70 0 1200 0 0 0 0 0 0 0 0 82 24 0 0 0 TB129 07/06/2011 240138 240138 006 2N 0 380 0 0 170 0 0 0 0 0 0 0 0 0 0 0 0 0 88 0 0 0 0 TB96 08/06/2011 240136 240136 004 2N 0 80 0 0 10 0 0 60 0 0 0 0 0 0 14 0 0 0 88 2 0 0 0 TB65 28/07/2011 245383 245383 002 2N 0 1500 0 210 5,100 230 0 60 30 650 0 120 240 0 0 0 0 0 100 10 0 0 2 TB8 00/01/1900 200739 200739 001 1 0 0 0 0 0 0 0 0 0 0 0 0 200 0 0 28 0 0 110 990 0 0 16 TB154 17/08/2011 248124 248124 003 2S/2N 0 130 0 0 60 60 210 9500 1000 0 0 2400 9700 0 0 0 0 0 120 11 0 0 0 TB46 00/01/1900 233080 233080 003 2N 0 270 0 0 10 20 50 0 0 0 0 0 0 0 0 0 0 0 120 5 0 0 0 TB71 14/06/2011 240781 240781 003 2N 0 210 0 0 20 0 0 0 0 100 0 0 0 0 28 0 0 0 130 8 0 0 2 TB29 30/09/2010 212486 212486 002 2N 0 20 0 0 10 130 0 20 0 0 0 0 0 0 0 0 0 0 150 1 0 0 0 TB98 08/06/2011 240136 240136 003 2S 0 430 0 0 1200 40 520 350 0 110 210 270 0 0 0 0 0 0 150 10 0 0 1 TB56 05/07/2011 242851 242851 006 2N 0 3400 70 0 200 90 40 2100 410 1300 0 410 310 0 1900 0 0 0 180 22 0 0 8 TB78 03/02/2011 227048 227048 003 Amalgamated with SP A 0 160 0 0 80 0 0 0 0 0 0 0 0 0 15 0 0 0 190 6 0 0 3 TB31 20/05/2011 238165 238165 007 2N 0 200 0 0 50 20 0 0 0 0 0 0 0 0 9 0 0 0 200 2 0 0 3 TB58 09/06/2011 240137 240137 004 2N 0 250 0 0 0 20 0 0 0 0 0 0 0 0 6 0 0 0 200 2 0 0 0 TB145 12/07/2011 243739 243739 006 2N 0 110 0 0 20 0 0 0 0 0 0 0 0 0 23 0 0 0 230 20 0 0 1 TB18 04/08/2010 208440 208440 004 2N 0 1100 0 0 40 30 0 70 100 130 0 570 240 0 0 0 0 0 250 6 0 0 6 TB177 14/10/2011 254403 254403 001 Retained onsite 0 30 28 70 0.27 10 0.1 1.1 10 0 0 0 0 0 8 0 0 0 300 0 0 0 0 TB100 12/09/2011 250401 250401 002 0 1000 520 470 170 1100 200 100000 28000 13000 240000 5500 5700 0 10 0 0 0 370 29 0 0 32 TB23 03/03/2011 230138 230138 004 2N 0 50 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 590 35 0 0 5 TB14 26/05/2010 201011 201011 011 2N 0 520 0 0 20 0 0 3100 230 0 0 2800 9900 0 0 0 0 0 720 260 0 0 16 TB59 24/03/2011 0 0 2N 0 190 0 0 20 40 10 40 40 0 0 0 0 0 34 0 0 0 860 11 0 0 2 TB61 08/06/2011 240136 240136 002 2S 0 350 270 0 60 90 0 70 0 930 0 0 0 0 180 14 0 0 940 13 0 0 6 TB62 08/06/2011 240136 240136 002 2S 0 350 270 0 60 90 0 70 0 930 0 0 0 0 180 14 0 0 940 13 0 0 6 TB76 20/09/2011 251499 251499 002 3 0 8100 0 120 960 370 0 510 570 4900 50000 420 240 0 0 0 0 0 1200 21 0 0 23 TB69F 01/08/2011 246061 246061 005 3 0 20000 1500 1100 3300 190 10 500 520 1100 1100 130 180 0 28 0 0 0 1300 8 0 0 34 TB69E 01/08/2011 246061 246061 004 3 0 14000 0 0 1600 80 20 850 870 1400 3800 150 160 0 41 0 0 0 3700 7 0 0 24 TB88 20/09/2011 251499 251499 004 3 0 4500 0 430 980 370 26 2900 2000 6400 50000 270 360 0 40 0 0 0 4000 28 0 0 75 TB68 20/04/2011 235498 235498 004 2N 0 30 0 0 0 200 0 0 190 0 0 0 180 0 8 0 0 0 5700 0 0 0 0 TB52 20/07/2011 244617 244617 005 2N 400 0 0 0 0 0 890 30 0 120 0 0 0 0 0 0 0 0 5 7 5 0 0 TB77 11/04/2011 234179 234179 002 2N 0 100 0 0 60 20 0 0 0 0 0 0 0 0 6 0 0 0 37 2 5 0 1 TB69B 08/07/2011 243407 243407 002 2N 0 3000 0 0 200 70 0 20 0 1100 0 120 110 0 12 0 0 0 41 22 5 0 5 TB70 24/03/2011 232481 232481 012 2N 0 50 0 0 40 0 0 0 40 180 0 0 0 0 5 0 0 0 71 1 5 0 0 TB136 23/05/2011 238552 238552 007 2S 0 2200 0 0 380 100 20 0 180 2000 0 0 0 0 9 0 0 0 19 6 6 0 4 TB35 04/04/2011 233535 233535 002 2N 0 90 0 0 120 20 10 110 190 200 0 0 0 0 13 0 0 0 51 4 6 0 3 TB108 31/05/2011 239065 239065 004 2S/2N 0 1400 0 0 480 80 0 0 0 100 0 200 0 0 15 0 6 0 61 2 6 0 6 TB80 00/01/1900 229787 229787 011 2N 0 60 0 0 610 30 0 110 0 0 0 0 0 0 0 0 0 0 88 4 6 0 2 TB64 11/02/2011 230931 230931 004 2N 0 280 0 0 0 20 10 430 910 0 0 1800 360 0 94 0 83 0 130 55 6 17 24 TB92 04/04/2011 233535 233535 004 Amalgamated with SP A 0 90 0 0 0 10 0 140 70 0 0 0 0 0 0 0 0 0 210 22 6 0 1 TB49 03/08/2011 246180 246180 001 2S/2N 0 240 180 7500 60 30 20 0 20 0 0 0 0 0 23 0 0 0 530 4 6 0 5 TB27 10/02/2011 228271 228271 002 2N 0 980 0 0 40 10 10 470 60 1200 0 0 500 0 170 0 0 0 11000 23 6 0 190 TB106 27/07/2011 245233 245233 007 2N 0 1600 0 0 0 10 0 0 0 1900 0 400 100 0 81 0 6 0 44 68 7 0 3 TB153 19/08/2011 247963 247963 004 2S 0 90 0 0 20 40 0 2800 60 0 0 180 2600 0 0 7 0 0 300 2 7 0 0 TB126 02/02/2011 226715 226715 004 Amalgamated with TB56 0 230 0 0 0 0 0 0 0 0 0 0 0 0 60 0 0 0 340 5 7 0 19 TB143 26/08/2011 249097 249097 005 2S 0 230 0 0 70 0 0 0 0 200 0 0 300 0 0 0 0 0 51 11 8 0 2 TB34 12/05/2011 237409 237409 002 2N 0 2200 10 0 3000 60 0 400 30 1400 0 0 200 0 0 0 5 0 120 21 8 0 5 TB149 20/07/2011 244623 244623 003 2N 0 320 0 0 100 0 0 0 20 0 0 0 0 0 11 0 0 0 140 0 8 0 0 TB84 16/05/2011 237754 237754 003 0 11000 0 0 1200 3200 590 490000 510000 82000 3500000 15000 6600 0 14 0 0 0 240 230 8 0 21 TB87 07/09/2011 249833 249833 004 3 0 2300 130 160 800 120 30 1700 4700 2400 80000 600 250 0 42 0 0 0 640 7 8 0 6 TB30 04/04/2011 233533 233533 005 2N 0 0 0 0 0 520 40 77000 180 0 0 600 8600 0 19 25 0 0 1100 5 8 0 0 TB147 07/07/2011 243413 243413 003 2N 0 0 0 0 0 0 0 190 70 0 0 0 0 0 110 8 0 0 2800 91 8 0 390 TB122 01/07/2011 242723 242723 005 2S/2N 0 220 0 0 730 0 0 0 0 0 0 400 0 0 12 0 5 0 57 3 9 0 4 TB123 12/05/2011 237214 237214 005 Amalgamated with SP B 0 600 40 0 2100 0 0 90 30 0 0 200 0 0 0 0 0 0 110 4 9 0 1 TB146 08/07/2011 243407 243407 005 2S/2N 0 70 0 0 30 0 0 0 0 0 0 200 740 0 22 23 0 0 120 1 9 0 0 TB91 04/04/2011 233535 233535 003 Amalgamated with SP A 0 80 0 0 0 30 0 950 330 0 0 0 100 0 0 0 0 0 130 8 9 0 1 TB4 24/03/2011 232481 232481 009 2N 0 70 0 0 270 20 0 0 0 0 0 0 0 0 0 0 0 0 140 1 9 0 0 TB26 00/01/1900 229713 229713 002 2N 0 30 0 0 0 20 0 30 30 0 0 0 0 0 0 0 0 0 52 12 10 0 10 TB69D 02/08/2011 246057 246057 003 3 0 17000 0 0 450 120 10 100 20 1100 0 460 0 0 9 0 0 0 190 19 10 0 16 TB134 07/06/2011 240132 240132 004 2N 0 1400 70 0 110 190 70 1400 560 1000 0 0 320 0 13 0 0 0 10 10 11 0 1 TB167 21/09/2011 251704 251704 002 3 0 630 0 0 0 10 0 0 0 180 0 200 0 0 0 0 0 0 10 0 11 0 0 TB133 12/04/2011 234520 234520 004 2S/2N 0 5000 70 0 580 380 220 6000 1900 2300 0 300 200 0 150 0 0 0 220 810 11 0 110 TB72 20/07/2010 205782 205782 005 0 200 0 0 0 0 0 660 130 0 0 0 3900 0 1900 250 0 0 1400 25 11 0 5 TB112 27/07/2011 245233 245233 003 2S/2N 0 1900 2200 0 1,900 60 0 0 20 1200 3100 400 200 0 11 0 0 0 34 85 12 0 16 TB135 12/04/2011 234516 234516 002 2N 0 730 0 0 70 30 10 0 0 100 0 0 100 0 0 0 0 0 50 10 13 0 3 TB93 07/09/2011 249833 249833 006 3 0 1800 0 100 670 130 0 130 1200 6300 66000 220 200 0 28 0 0 0 3000 6 13 0 12 TB137 01/06/2011 239396 239396 003 2S 0 3900 460 0 280 190 50 630 370 5300 0 0 0 0 6 0 0 0 45 130 14 0 21 TB131 12/04/2011 234517 234517 003 2N 0 2200 20 0 500 20 0 0 0 0 0 0 0 0 5 0 0 0 47 1 14 0 27 TB79 00/01/1900 229787 229787 008 2N 0 20 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 100 12 14 0 3 TB69C 02/08/2011 246057 246057 002 3 0 23000 0 0 690 200 20 390 150 540 660 0 0 0 24 0 0 0 320 23 14 0 32 TB1 19/05/2010 202760 202760 001 3 0 100 0 0 0 20 20 270 110 0 0 0 0 0 30 89 0 0 410 950 14 0 3 TB83 28/07/2011 245386 245386 004 2S/2N 0 7900 0 770 2,600 80 10 10 50 3300 0 810 1700 0 25 33 0 0 420 71 14 0 10 Hauxton Ex-situ Treatment Bed Validation Sample Human Health Assessment Appendix C.4 Phenoxy Phenoxy Phenoxy Acetic acid Acetic acid Acetic acid Bis(2- Vinyl herbicide: herbicide: herbicide: 2,4,6- 2-Methyl-4,6- 4-Chloro-2- chloroethyl) 1,2- 1,2- Cis-1,2- chloride Xylene Report Reinstatement Dimefox Ethofumesate Hempa Schradan Simazine Dicamba Dichlorprop MCPA Mecoprop Trichlorophenol dinitrophenol methylphenol ether Phenol Dichlorobenzene Dichloroethane Dichloroethylene Cyclohexanone Tetrachloroethylene Toluene Trichloroethylene monomer (Total) Location Date Number Lab Ref Zone µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg TB102 03/06/2011 239626 239626 006 2N 0 840 0 0 230 60 0 110 0 200 0 0 0 0 94 0 0 0 1100 3 14 0 4 TB82 24/11/2010 220984 220984 006 Amalgamated with TB95 0 590 0 0 100 0 0 0 0 180 0 0 160 0 9 0 0 0 40 56 16 0 16 TB139 17/06/2011 241130 241130 003 2N 0 2300 0 0 370 40 90 1500 570 800 0 800 700 0 6 0 0 0 150 16 16 0 3 TB148 26/08/2011 249097 249097 006 2S 0 90 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 33 0 17 0 0 TB22 05/01/2011 224038 224038 002 2N 0 70 0 0 70 20 0 0 0 0 0 0 0 0 0 0 16 0 1500 4 17 0 27 TB156 01/09/2011 249482 249482 004 2S 0 450 0 0 60 0 30 0 4900 0 0 330 0 0 0 0 5 0 8 2 18 0 0 TB172 21/09/2011 251694 251694 006 3 0 0 110 70 0 0 0 21 88 0 0 640 250 0 0 0 6 0 8 1 18 0 6 TB166 12/09/2011 250404 250404 004 2S 0 310 0 0 0 0 0 0 0 310 0 110 0 0 0 0 0 0 79 4 18 0 1 TB164 14/09/2011 250749 250749 002 2S 0 20 0 0 0 20 0 240 12 0 0 400 800 0 70 37 0 0 250 2 18 0 4 TB94 02/06/2011 239619 239619 003 2N 0 1400 0 0 130 40 0 130 200 100 0 0 0 0 110 0 44 0 270 18 18 0 5 TB86 10/02/2011 230936 230936 006 2N 0 230 0 0 410 30 10 0 20 0 0 0 0 0 91 0 11 0 520 100 18 0 27 TB117 27/07/2011 245233 245233 006 2N 0 6800 0 0 0 30 0 0 0 100 0 0 0 0 0 0 0 0 7 2 20 0 0 TB163 13/09/2011 250753 250753 004 2S 0 1300 0 10 50 30 0 1400 20 0 0 500 150 0 32 9 0 0 170 1 20 0 0 TB28 31/03/2011 233097 233097 005 2N 0 150 20 0 60 80 0 190 140 0 0 0 0 0 27 150 0 0 5400 11 20 0 7 TB111 07/06/2011 239865 239865 008 2N 0 2300 150 0 2200 120 0 100 410 300 0 0 0 0 0 0 7 0 10 0 21 0 4 TB103 02/06/2011 239617 239617 002 2N 0 4000 0 0 1000 170 110 5500 3800 1100 0 0 3600 0 26 0 0 0 11000 7 21 0 11 TB101 03/06/2011 239626 239626 004 2N 0 1100 0 110 1,200 10 0 4900 0 0 0 0 0 0 19 0 0 0 810 3 24 0 4 TB99 18/07/2011 244506 244506 005 2S/2N 0 5300 40 0 2400 80 220 6600 2000 4600 0 400 600 0 290 0 0 0 3500 250 25 0 1300 TB50 05/08/2011 246533 246533 001 3 0 2600 300 3000 0 20 0 0 0 600 0 0 0 0 70 0 0 0 35 36 28 0 0 TB51 05/05/2011 236570 236570 002 2N 0 60 0 30 10 30 0 20 10 0 0 0 0 0 48 220 16 0 510 14 29 0 0 TB171 21/09/2011 251704 251704 001 3 0 320 13000 4300 190 20 40 350 40 1000 0 1900 3600 0 690 0 8 0 23 0 32 0 1 TB160 06/09/2011 249841 249841 003 2S/3 0 7200 1000 2200 190 30 0 0 0 540 0 760 130 0 790 0 41 0 2200 140 33 0 34 TB161 00/01/1900 252537 252537 004 3 0 640 340 740 0 50 30 20 20 270 0 0 320 0 23 0 13 0 160 30 36 0 8 TB16 31/03/2011 233097 233097 001 2N 0 440 20 0 290 120 10 170 260 1100 0 0 0 0 14 0 43 0 99 24 40 0 9 TB63 19/08/2011 247960 247960 004 2S 0 0 0 320 0 30 0 0 0 2400 0 530 310 0 510 0 0 0 290 150 40 0 7 TB150 20/07/2011 244623 244623 004 2S/2N 0 2300 0 0 260 0 0 10 0 400 0 0 3600 0 7 0 6 0 680 2 40 0 4 TB173 21/09/2011 251694 251694 005 2S/3 0 700 480 520 260 30 38 740 140 550 0 370 460 0 44 0 0 0 32 4 41 0 84 TB158 19/08/2011 247963 247963 007 2S 0 80 20 70 30 10 10 1900 30 200 0 1900 5300 0 190 20 0 0 300 4 41 0 1 TB170 21/09/2011 251694 251694 002 3 0 460 8000 56000 360 33 22 250 95 4400 0 520 1800 0 56 0 0 0 280 35 42 0 12 TB113 19/08/2011 247960 247960 005 3 0 1100 1300 5100 430 250 40 310 160 920 200 0 0 0 54 0 0 0 440 5 42 0 61 TB24 11/02/2011 230931 230931 001 2N 0 150 0 0 20 30 20 30 60 0 0 0 0 0 41 34 81 0 840 290 42 0 10 TB115C 23/08/2011 248438 248438 006 3 0 1200 2000 8400 240 40 0 0 0 510 0 0 120 0 26 0 0 0 140 10 44 0 0 TB33 31/03/2011 233097 233097 006 2N 0 260 0 0 70 80 0 120 110 130 0 0 4600 0 8 360 0 0 1800 32 50 0 5 TB115A 23/08/2011 248438 248438 001 2S/2N 0 3200 2400 6900 390 60 50 220 140 270 0 0 120 0 0 0 0 0 91 0 51 0 0 TB104 25/05/2011 238743 238743 005 2N 0 720 0 0 180 150 20 600 900 300 100 200 0 0 24 0 0 0 940 3 53 0 12 TB66 05/01/2011 224038 224038 005 2N 0 80 0 0 30 0 0 0 0 0 0 0 120 0 5 0 0 0 83 90 63 0 16 TB60 27/07/2011 245233 245233 004 2S/2N 0 1400 0 0 0 20 0 0 0 3000 0 400 200 0 110 0 24 0 120 150 71 0 4 TB159 13/09/2011 250753 250753 003 2S 0 70 50 20 30 30 20 1100 30 0 0 2100 1000 0 38 0 0 0 220 0 71 0 1 TB54 05/08/2011 246373 246373 006 2S 0 970 60 110 0 0 0 0 0 360 0 0 0 0 610 0 0 0 250 9 74 0 2 TB115D 23/08/2011 248438 248438 002 3 0 1800 2000 7600 410 50 40 140 80 1300 0 130 260 0 110 0 0 0 160 18 85 0 6 TB110 24/03/2011 232481 232481 019 2N 0 2900 0 0 100 110 70 270 640 3600 0 470 210 0 420 96 36 0 2700 590 95 0 120 TB115B 15/07/2011 244016 244016 004 2S/2N 0 3500 160 0 870 120 0 900 420 1000 0 0 0 0 240 0 17 0 63 48 100 0 42 TB38 24/03/2011 232481 232481 013 2N 0 200 0 0 50 0 0 0 0 0 0 0 0 0 390 0 36 0 240 14 100 0 18 TB74 14/06/2011 240781 240781 005 2N 0 1200 0 0 90 30 0 0 150 5500 0 0 0 0 22 0 930 0 760 420 130 0 23 TB128 00/01/1900 244627 244627 004 2S/2N 0 480 170 390 120 0 0 0 0 200 0 600 200 200 0 0 28 0 91 15 150 0 1 TB114 11/08/2011 247170 247170 007 3 0 1000 5200 3600 150 110 10 70 20 100 0 0 0 0 53 0 0 0 700 0 150 0 0 TB53 05/08/2011 246533 246533 002 3 0 1600 1800 3600 210 40 0 0 0 1300 0 100 500 0 760 61 0 0 1500 27 170 0 7 TB162 13/09/2011 250740 250740 004 2S/3 0 760 1500 2800 140 37 100 400 310 150 0 110 390 0 0 0 0 0 100 3 180 0 0 TB116 30/08/2011 249082 249082 007 3 0 760 1500 6500 130 80 20 0 30 300 0 0 0 0 28 28 15 0 1200 14 180 0 2 TB142 18/07/2011 2445060 244506 002 2S 0 110 0 0 20 20 0 1500 150 0 0 500 3200 0 64 0 0 0 1700 12 220 0 0 TB179 30/11/2011 259651 259651 003 Retained onsite 0 80 0 0 20 50 70 3100 1200 0 0 8600 17000 170 0 0 490 0 3900 1900 530 25 130 TB118 17/08/2011 248124 248124 010 2N/2S/3 0 3700 2700 5000 410 50 30 190 70 400 2200 200 0 0 280 0 7 0 1700 6 1000 0 15 TB165 12/09/2011 250404 250404 002 3 0 910 150 350 0 18 60 500 110 1000 440 980 3500 0 1300 32 32 0 1900 360 1000 0 310 TB119 23/08/2011 248438 248438 003 3 0 2300 6400 20000 300 40 100 620 210 580 0 0 770 0 1600 0 96 0 1400 180 8100 0 150

Number of samples 185 185 185 185 185 185 185 185 185 185 185 185 185 185 185 185 185 185 185 185 185 185 185

Minimum value 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

Maximum value 400.00 28000.00 13000.00 56000.00 5100.00 3200.00 890.00 490000.00 510000.00 82000.00 3500000.00 35000.00 17000.00 200.00 1900.00 360.00 930.00 0.00 11000.00 1900.00 8100.00 25.00 1300.00 Second highest value 0.00 23000.00 8000.00 20000.00 3300.00 1100.00 590.00 100000.00 28000.00 13000.00 240000.00 15000.00 10000.00 170.00 1900.00 250.00 490.00 0.00 11000.00 990.00 1000.00 17.00 390.00 Range 0- 400 0- 28000 0- 13000 0- 56000 0- 5100 0- 3200 0- 890 0- 490000 0- 510000 0- 82000 0- 3500000 0- 35000 0- 17000 0- 200 0- 1900 0- 360 0- 930 0- 0 0- 11000 0- 1900 0- 8100 0- 25 0- 1300 Average concentration 2.16 1563.51 314.58 818.81 308.38 71.83 28.95 4163.36 3198.03 1092.43 21609.78 555.35 752.70 2.00 82.42 8.31 11.49 0.00 549.84 53.16 74.96 0.23 20.58 Number of exceedances 0 0 0 0 0 0 0 0 0 1 0 0 0 0 3 21 31 0 31 0 13 2 0 % above assessment criteria 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.54 0.00 0.00 0.00 0.00 1.62 11.35 16.76 0.00 16.76 0.00 7.03 1.08 0.00 Assessment criteria NA NA NA NA NA NA NA NA NA 16000.0 NA NA NA 78000.0 1500.0 3.0 0.5 NA 760 3000.0 100.0 0.5 2500.0 Surrogate Atkins Surrogate Atkins Source of SSV Surrogate Atkins SSV (Vinyl assessment Non Non (Pentachlorophe Hauxton SSV Chloride) Atkins Hauxton criteria Volatile Non Volatile Non Volatile Volatile Non Volatile Non Volatile Non Volatile Non Volatile Non Volatile nol) Non Volatile Non Volatile Non Volatile SSV (chlorobenzene) Atkins SSV Not volatile Atkins SSV Hauxton SSV Atkins SSV SSV SSV

Hauxton Post-Remediation Human Health Risk Assessment

C.5. Groundwater Human Health GQRA

Hauxton WSV Groundwater Assessment Summary Sheet

Second Average % above Source of Number of Minimum Maximum highest concentr Number of assessment Assessment assessment Determinand Units samples value value value Range ation exceedances criteria criteria criteria

Electrical Conductivity µs/cm 65 230 3000 3000 230- 3000 1282 0 0 - - pH 65 6.8 11.9 11.9 6.8- 11.9 8 0 0 - - Dimefox µg/l 65 0.1 10 10 0.1- 10 0 0 0 - -

Ethofumesate µg/l 65 0.1 1900 840 0.1- 1900 92 0 0 - - 0.1- Hempa µg/l 65 0.1 21000 2100 21000 509 0 0 - - 0.1- Schradan µg/l 65 0.1 17000 5200 17000 404 0 0 - - Simazine µg/l 65 0.01 830 660 0.01- 830 53 0 0 - - Dicamba µg/l 65 0.1 100 100 0.1- 100 15 0 0 - -

Phenoxy Acetic acid herbicide: Dichlorprop µg/l 65 0.1 27 22 0.1- 27 3 0 0 - -

Phenoxy Acetic acid herbicide: MCPA µg/l 65 0.1 1600 460 0.1- 1600 73 0 0 - -

Phenoxy Acetic acid herbicide: Mecoprop µg/l 65 0.1 580 230 0.1- 580 34 0 0 - -

2,4,6- Trichlorophenol µg/l 65 10 880 700 10- 880 62 0 0 - -

2-Methyl-4,6- dinitrophenol µg/l 65 10 540 430 10- 540 42 0 0 - -

4-Chloro-2- methylphenol µg/l 65 10 120 40 10- 120 14 0 0 - - Bis (2- chloroethyl) ether µg/l 65 10 2700 1300 10- 2700 148 0 0 - - Phenol µg/l 65 10 50 50 10- 50 40 0 0 1690000 WSV 1,2- Dichlorobenzen e µg/l 65 1 10 4 1- 10 1 0 0 13700 WSV

1,2- Dichloroethane µg/l 65 1 290 240 1- 290 13 3 5 37.3 WSV Cis-1,2- Dichloroethylen e µg/l 65 1 610 510 1- 610 31 1 2 548 WSV

Cyclohexanone µg/l 65 10 100 10 10- 100 11 0 0 - - Tetrachloroeth ylene µg/l 65 1 16000 14000 1- 16000 601 4 6 1660 WSV Toluene µg/l 65 1 21 13 1- 21 2 0 0 96400 WSV Trichloroethyle ne µg/l 65 1 900 800 1- 900 44 4 6 222 WSV

Vinyl chloride monomer µg/l 65 1 50 49 1- 50 4 9 14 2.48 WSV

Xylene (Total) µg/l 65 1 10 4 1- 10 1 0 0 4100 WSV

Hauxton GW assessment WSVs A_HB.xls/Sumary Sheet 3/3 Hauxton Vertase Groundwater Monitoring data WSVs for residential

Exceedances of the guideline value

Phenoxy Acetic Electrical Phenoxy Acetic acid herbicide: Phenoxy Acetic acid 2,4,6- 2-Methyl-4,6- 4-Chloro-2- Bis (2- Coordinates Determinand pH Dimefox Ethofumesate Hempa Schradan Simazine Dicamba acid herbicide: Phenol Conductivity Dichlorprop herbicide: Mecoprop Trichlorophenol dinitrophenol methylphenol chloroethyl) ether Report MCPA Report Date Number Location x y Units µs/cm µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l Method Detection Limit 07/02/2012 265655 BH9 2000.00 7.10 <0.1 8.70 0.60 <0.1 <0.01 <0.1 <0.1 <0.1 18.00 <10 <10 <10 160.00 <50 01/03/2012 268922 BH9 2600.00 6.80 <0.1 6.60 6.00 2.60 0.06 0.60 <0.1 4.60 0.60 <10 <10 <10 140.00 <50 11/04/2012 273595 BH9 2600.00 7.30 <0.1 4.40 <0.1 <0.1 0.05 <0.1 <0.1 <0.1 <0.1 <10 <10 <10 <10 <30 11/05/2012 277619 BH9 3000.00 7.00 <0.1 6.40 9.50 3.90 0.06 0.20 <0.1 <0.1 18.00 <10 <10 <10 120.00 <50 18/06/2012 282520 BH9 3000.00 7.00 <0.1 8.40 <0.1 <0.1 <0.01 0.10 <0.1 0.20 14.00 <10 <10 <10 110.00 <30 07/02/2012 265655 VN3 2100.00 7.00 <0.1 11.00 6.00 2.50 1.60 1.70 0.20 2.90 23.00 <10 <10 <10 270.00 <50 01/03/2012 268922 VN3 2100.00 7.00 <0.1 3.40 15.00 3.10 0.93 3.30 <0.1 1.80 12.00 <10 <10 <10 100.00 <50 11/04/2012 273595 VN3 2200.00 7.40 <0.1 6.80 <0.1 3.80 0.77 2.50 <0.1 <0.1 <0.1 <10 <10 <10 59.00 <30 11/05/2012 277619 VN3 2100.00 7.10 <0.1 5.30 100.00 5.30 3.40 3.20 0.30 1.90 24.00 <10 <10 <10 150.00 <50 18/06/2012 282520 VN3 2300.00 7.10 <0.1 10.00 <0.1 <0.1 1.60 0.70 0.30 <0.1 27.00 <10 <10 <10 460.00 <30 07/02/2012 265655 BH11 530.00 7.40 <0.1 20.00 81.00 25.00 17.00 18.00 <0.1 1.70 2.10 <10 13.00 <10 32.00 <50 24/02/2012 269103 BH11 930.00 7.20 <0.1 <0.1 290.00 85.00 6.50 19.00 <0.1 <0.1 0.30 <10 <10 <10 <10 <50 11/04/2012 273595 BH11 900.00 7.50 <0.1 0.60 230.00 84.00 0.44 1.50 0.20 <0.1 0.20 <10 <10 <10 <10 <30 11/05/2012 277619 BH11 450.00 7.80 <0.1 19.00 180.00 18.00 45.00 23.00 1.50 19.00 18.00 <10 <10 <10 <10 <50 18/06/2012 282344 BH11 640.00 7.60 <0.1 1.00 370.00 15.00 2.50 16.00 0.30 72.00 1.20 <10 <10 <10 <10 <30 11/05/2012 277631 B21 1200.00 7.40 <0.1 <0.1 95.00 4.50 10.00 1.70 <0.1 1.30 0.30 <10 <10 <10 <10 <50 10/01/2012 262382 I6 1500.00 7.30 <10 1900.00 800.00 1000.00 830.00 61.00 22.00 330.00 170.00 68.00 190.00 120.00 550.00 <40 07/02/2012 265629 I6 1100.00 7.40 <0.1 61.00 66.00 25.00 62.00 8.00 2.20 <0.1 16.00 11.00 <10 32.00 400.00 <50 01/03/2012 268928 I6 1300.00 7.50 <0.1 38.00 120.00 83.00 38.00 45.00 1.70 <0.1 13.00 10.00 <10 <10 380.00 <50 12/05/2012 277629 I6 790.00 7.80 <0.1 220.00 300.00 270.00 13.00 21.00 0.20 9.30 0.90 <10 <10 <10 250.00 <50 18/06/2012 282340 I6 870.00 7.60 <0.1 24.00 520.00 180.00 14.00 3.90 1.50 2.80 10.00 <10 <10 24.00 360.00 <30 10/01/2012 262382 H7 1600.00 7.70 <10 85.00 21000.00 17000.00 48.00 3.10 8.50 100.00 10.00 <10 <10 <10 160.00 <40 01/03/2012 268928 H7 1400.00 7.40 <0.1 11.00 80.00 400.00 2.50 8.30 6.00 130.00 10.00 30.00 <10 <10 2700.00 <50 12/05/2012 277629 H7 1200.00 7.60 <0.1 290.00 2100.00 6.30 12.00 5.90 3.60 68.00 10.00 13.00 <10 <10 1200.00 <50 18/06/2012 282340 H7 1200.00 7.40 <0.1 8.90 630.00 5200.00 5.50 3.30 3.70 71.00 7.70 13.00 <10 <10 1300.00 <30 01/03/2012 268933 E14 1300.00 6.90 <0.1 0.70 35.00 17.00 0.24 0.10 <0.1 <0.1 0.90 <10 <10 <10 <10 <50 11/04/2012 273625 E14 1400.00 6.90 <0.1 0.30 160.00 1.30 0.05 0.20 <0.1 <0.1 0.60 <10 <10 <10 <10 <30 08/02/2012 265247 A18 800.00 7.00 <0.1 2.50 23.00 32.00 1.10 0.40 <0.1 <0.1 <0.1 <10 <10 <10 <10 <30 09/01/2012 262390 A18 850.00 7.40 <0.1 0.60 15.00 32.00 0.35 0.80 <0.1 0.10 0.20 <10 <30 <10 <10 <40 01/03/2012 268931 A18 820.00 7.10 <0.1 0.90 33.00 57.00 0.32 0.20 <0.1 <0.1 0.10 <10 <10 <10 <10 <50 11/04/2012 273400 A18 930.00 7.20 <0.1 1.80 34.00 85.00 0.30 0.50 <0.1 <0.1 0.30 <10 <10 <10 <10 <30 11/05/2012 277631 A18 980.00 7.50 <0.1 0.50 63.00 14.00 0.29 4.70 <0.1 4.80 1.30 <10 <10 <10 <10 <50 18/06/2012 282083 A18 1100.00 7.10 <0.1 1.20 150.00 53.00 0.44 1.40 0.20 5.30 1.40 <10 <10 <10 <10 <30 09/01/2012 262386 G21 910.00 7.30 <0.1 0.50 1.40 2.80 0.11 0.40 <0.1 1.20 0.90 <10 <30 <10 <10 <40 07/02/2012 265249 G21 880.00 7.00 <0.1 0.50 0.90 0.50 0.11 0.50 <0.1 0.40 0.80 <10 <10 <10 <10 <30 01/03/2012 268295 G21 920.00 7.10 <0.1 0.50 5.90 1.30 0.16 1.20 <0.1 6.60 0.40 <10 <10 <10 <10 <50 11/04/2012 273400 G21 900.00 7.10 <0.1 0.40 <0.1 <0.1 0.10 0.40 <0.1 <0.1 0.50 <10 <10 <10 <10 <30 11/05/2012 277631 G21 920.00 7.40 <0.1 1.20 2.20 0.50 0.17 1.40 0.30 8.20 4.70 <10 <10 <10 <10 <50 18/06/2012 282083 G21 940.00 7.10 <0.1 0.50 <0.1 <0.1 0.13 0.70 0.10 4.40 2.50 <10 <10 <10 <10 <30 07/02/2012 265249 I24 2000.00 11.70 <0.1 840.00 110.00 4.60 440.00 100.00 22.00 1600.00 580.00 880.00 540.00 34.00 35.00 <30 01/03/2012 268925 I24 1500.00 11.70 <0.1 290.00 110.00 4.00 150.00 63.00 27.00 460.00 230.00 700.00 430.00 20.00 30.00 <50 11/04/2012 273625 I24 1400.00 11.40 <0.1 56.00 430.00 3.80 54.00 35.00 17.00 400.00 190.00 530.00 140.00 17.00 38.00 <30 12/05/2012 277630 I24 2100.00 11.90 <0.1 550.00 110.00 0.70 510.00 16.00 12.00 230.00 120.00 370.00 34.00 <10 11.00 <50 18/06/2012 282079 I24 2100.00 11.90 <0.1 520.00 410.00 <0.1 660.00 8.70 3.40 45.00 27.00 630.00 320.00 23.00 26.00 <30 09/01/2012 262386 K21 1300.00 7.20 <0.1 0.80 5.00 7.40 1.10 2.40 <0.1 0.50 0.50 <10 <30 <10 <10 <40 07/02/2012 265249 K21 1200.00 7.00 <0.1 0.60 25.00 0.70 1.10 16.00 <0.1 0.50 2.90 <10 <10 <10 <10 <30 01/03/2012 268925 K21 1300.00 7.00 <0.1 0.20 49.00 3.10 0.51 4.40 <0.1 1.40 0.20 <10 <10 <10 <10 <50 11/04/2012 273625 K21 1400.00 6.90 <0.1 0.20 32.00 <0.1 0.09 7.70 <0.1 9.60 1.40 <10 <10 <10 <10 <30 12/05/2012 277630 K21 1300.00 7.30 <0.1 1.00 130.00 1.30 0.78 65.00 0.50 1.00 5.00 <10 <10 <10 <10 <50 18/06/2012 282079 K21 1400.00 7.00 <0.1 0.80 190.00 <0.1 1.00 22.00 1.90 4.80 19.00 <10 <10 <10 <10 <30 09/01/2012 262390 I18 1400.00 7.30 <0.1 2.60 53.00 120.00 0.65 10.00 <0.1 <0.1 0.30 <10 <30 <10 15.00 <40 07/02/2012 265276 I18 1400.00 6.90 <0.1 42.00 92.00 54.00 7.80 63.00 7.10 220.00 110.00 39.00 <10 40.00 30.00 <30 01/03/2012 268933 I18 1500.00 7.00 <0.1 65.00 77.00 78.00 9.50 100.00 7.20 58.00 110.00 50.00 <10 <10 40.00 <50 05/04/2012 273389 I18 1600.00 7.00 <0.1 66.00 360.00 470.00 16.00 4.40 2.50 0.70 29.00 14.00 <10 <10 30.00 <30 12/05/2012 277630 I18 1600.00 7.30 <0.1 80.00 540.00 150.00 13.00 2.30 2.60 0.90 30.00 14.00 <10 <10 28.00 <50 18/06/2012 282079 I18 1700.00 7.00 <0.1 42.00 1300.00 170.00 6.60 44.00 <0.1 8.90 0.20 19.00 <10 <10 39.00 <30 07/02/2012 265653 K5 SUMP 550.00 10.50 <0.1 200.00 200.00 110.00 120.00 14.00 6.20 170.00 73.00 83.00 98.00 <10 18.00 <30 02/03/2012 269085 K5 SUMP 550.00 10.10 <0.1 120.00 430.00 39.00 70.00 45.00 20.00 450.00 170.00 80.00 170.00 <10 30.00 <50 12/05/2012 277620 K5 SUMP 330.00 9.10 <0.1 59.00 110.00 25.00 56.00 16.00 2.40 45.00 21.00 <10 <10 <10 <10 <50 18/06/2012 282073 K5 SUMP 520.00 9.30 <0.1 32.00 180.00 <0.1 40.00 18.00 2.20 41.00 17.00 19.00 13.00 <10 <10 <10 02/03/2012 269085 K10 PUDDLE 500.00 10.20 <0.1 120.00 190.00 87.00 55.00 17.00 4.10 18.00 27.00 10.00 140.00 <10 <10 <50 12/05/2012 277620 K10 PUDDLE 350.00 9.10 <0.1 65.00 110.00 25.00 65.00 17.00 1.30 17.00 12.00 <10 <10 <10 <10 <50 18/06/2012 282073 K10 PUDDLE 430.00 8.80 <0.1 4.00 75.00 12.00 24.00 24.00 0.20 6.10 1.70 <10 <10 <10 <10 <30 02/03/2012 269085 F14 PUDDLE 380.00 9.60 <0.1 22.00 93.00 74.00 2.90 19.00 2.20 25.00 15.00 <10 20.00 <10 <10 <50 12/05/2012 277620 F14 PUDDLE 230.00 10.50 <0.1 24.00 140.00 81.00 3.60 5.30 2.70 86.00 25.00 <10 <10 <10 <10 <50

Number of samples 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 Minimum value 230.00 6.80 0.10 0.10 0.10 0.10 0.01 0.10 0.10 0.10 0.10 10.00 10.00 10.00 10.00 10.00 Maximum value 3000.00 11.90 10.00 1900.00 21000.00 17000.00 830.00 100.00 27.00 1600.00 580.00 880.00 540.00 120.00 2700.00 50.00 Second highest value 3000.00 11.90 10.00 840.00 2100.00 5200.00 660.00 100.00 22.00 460.00 230.00 700.00 430.00 40.00 1300.00 50.00 Range 230- 3000 6.8- 11.9 0.1- 10 0.1- 1900 0.1- 21000 0.1- 17000 0.01- 830 0.1- 100 0.1- 27 0.1- 1600 0.1- 580 10- 880 10- 540 10- 120 10- 2700 10- 50

Average concentration 1281.54 7.91 0.40 91.77 508.83 403.62 52.73 15.44 3.08 73.05 34.44 62.05 41.82 13.54 147.71 40.46

Number of exceedances 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

% above assessment criteria 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

Assessment criteria ------1690000

Source of assessment criteria ------WSV

Hauxton GW assessment WSVs A_HB.xls/Hauxton waters 1/3 Hauxton Vertase Groundwater Monitoring data WSVs for residential

Exceedances of the guideline value

Cis-1,2- Tetrachloroethylen Coordinates Determinand 1,2-Dichlorobenzene 1,2-Dichloroethane Dichloroethylen Cyclohexanone Toluene Trichloroethylene Vinyl chloride monomer Xylene (Total) e Report e Report Date Number Location x y Units µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l Method Detection Limit 07/02/2012 265655 BH9 <1 <1 1.00 <10 <1 <1 <1 <1 <1 01/03/2012 268922 BH9 <1 <1 <1 <10 <1 <1 <1 <1 <1 11/04/2012 273595 BH9 <1 <1 <1 <10 <1 <1 <1 <1 <1 11/05/2012 277619 BH9 <1 <1 <1 <10 <1 <1 <1 <1 <1 18/06/2012 282520 BH9 <1 <1 <1 <10 <1 <1 <1 <1 <1 07/02/2012 265655 VN3 <1 <1 <1 <10 <1 <1 <1 <1 <1 01/03/2012 268922 VN3 <1 <1 <1 <10 <1 2.00 <1 <1 <1 11/04/2012 273595 VN3 <1 <1 <1 <10 <1 <1 <1 <1 <1 11/05/2012 277619 VN3 <1 <1 <1 <10 <1 <1 <1 <1 <1 18/06/2012 282520 VN3 <1 <1 2.00 <10 <1 <1 <1 <1 <1 07/02/2012 265655 BH11 <1 <1 <1 <10 <1 <1 <1 <1 <1 24/02/2012 269103 BH11 <1 <1 <1 <10 <10 <1 <1 <1 <1 11/04/2012 273595 BH11 <1 <1 <1 <10 <1 <1 <1 <1 <1 11/05/2012 277619 BH11 <1 <1 <1 <10 <1 <1 <1 <1 <1 18/06/2012 282344 BH11 <1 <1 <1 <10 <1 <1 <1 <1 <1 11/05/2012 277631 B21 <1 <1 <1 <10 <1 <1 <1 <1 <1 10/01/2012 262382 I6 <1 <1 1.00 <10 2.00 <1 <1 <1 <1 07/02/2012 265629 I6 <1 <1 <1 <10 <1 <1 <1 <1 <1 01/03/2012 268928 I6 <1 <1 1.00 <10 1.00 3.00 <1 <1 <1 12/05/2012 277629 I6 <1 <1 2.00 <10 1.00 <1 <1 <1 <1 18/06/2012 282340 I6 <1 <1 2.00 <10 2.00 <1 <1 1.00 <1 10/01/2012 262382 H7 <10 <10 610.00 <100 16000.00 21.00 900 50 <10 01/03/2012 268928 H7 <1 240.00 280.00 <10 3900.00 13.00 340 30 3.00 12/05/2012 277629 H7 <1 240.00 430.00 <10 5000.00 9.00 750 38 <1 18/06/2012 282340 H7 1.00 290.00 510.00 <10 14000.00 12.00 800 49 4.00 01/03/2012 268933 E14 <1 <1 2.00 <10 4.00 2.00 1.00 <1 <1 11/04/2012 273625 E14 <1 <1 2.00 <10 2.00 <1 <1 <1 <1 08/02/2012 265247 A18 <1 <1 <1 <10 3.00 <1 <1 <1 <1 09/01/2012 262390 A18 <1 <1 <1 <10 5.00 <1 <1 <1 <1 01/03/2012 268931 A18 <1 <1 <1 <10 2.00 2.00 2.00 <1 <1 11/04/2012 273400 A18 <1 <1 <1 <10 4.00 <1 3.00 <1 <1 11/05/2012 277631 A18 <1 <1 1.00 <10 20.00 <1 4.00 <1 <1 18/06/2012 282083 A18 <1 <1 2.00 <10 12.00 <1 <1 <1 <1 09/01/2012 262386 G21 <1 <1 <1 <10 4.00 <1 <1 <1 <1 07/02/2012 265249 G21 <1 <1 <1 <10 4.00 <1 <1 <1 <1 01/03/2012 268295 G21 <1 <1 <1 <10 3.00 <1 <1 <1 <1 11/04/2012 273400 G21 <1 <1 <1 <10 1.00 <1 <1 <1 <1 11/05/2012 277631 G21 <1 <1 <1 <10 4.00 <1 <1 <1 <1 18/06/2012 282083 G21 <1 <1 <1 <10 3.00 <1 <1 <1 <1 07/02/2012 265249 I24 3.00 <1 <1 <10 7.00 <1 2.00 <1 4.00 01/03/2012 268925 I24 <1 <1 <1 <10 6.00 <1 2.00 <1 1.00 11/04/2012 273625 I24 <1 <1 <1 <10 3.00 <1 1.00 <1 <1 12/05/2012 277630 I24 4.00 <1 <1 <10 6.00 <1 2.00 <1 3.00 18/06/2012 282079 I24 3.00 <1 <1 <10 6.00 <1 2.00 <1 <1 09/01/2012 262386 K21 <1 <1 <1 <10 <1 <1 1.00 <1 <1 07/02/2012 265249 K21 <1 <1 <1 <10 1.00 <1 1.00 <1 <1 01/03/2012 268925 K21 <1 <1 <1 <10 <1 <1 <1 <1 <1 11/04/2012 273625 K21 <1 <1 <1 <10 <1 <1 <1 <1 <1 12/05/2012 277630 K21 <1 <1 <1 <10 2.00 <1 1.00 <1 <1 18/06/2012 282079 K21 <1 <1 <1 <10 2.00 <1 1.00 <1 <1 09/01/2012 262390 I18 <1 <1 25.00 <10 3.00 <1 1.00 1.00 <1 07/02/2012 265276 I18 <1 <1 18.00 <10 5.00 <1 1.00 7.00 <1 01/03/2012 268933 I18 <1 <1 11.00 <10 3.00 2.00 <1 6.00 <1 05/04/2012 273389 I18 <1 <1 13.00 <10 3.00 <1 <1 4.00 <1 12/05/2012 277630 I18 1.00 <1 22.00 <10 10.00 <1 2.00 5.00 <1 18/06/2012 282079 I18 1.00 <1 25.00 <10 8.00 <1 2.00 5.00 <1 07/02/2012 265653 K5 SUMP <1 <1 <1 <10 2.00 <1 1.00 <1 <1 02/03/2012 269085 K5 SUMP <1 <1 <1 <10 16.00 <1 7.00 <1 <1 12/05/2012 277620 K5 SUMP <1 <1 <1 <10 <1 <1 <1 <1 <1 18/06/2012 282073 K5 SUMP <1 <1 <1 <10 <1 <1 <1 <1 <1 02/03/2012 269085 K10 PUDDLE <1 <1 <1 <10 <1 <1 <1 <1 <1 12/05/2012 277620 K10 PUDDLE <1 <1 <1 <10 <1 <1 <1 <1 <1 18/06/2012 282073 K10 PUDDLE <1 <1 <1 <10 <1 <1 <1 <1 <1 02/03/2012 269085 F14 PUDDLE <1 <1 <1 <10 <1 <1 <1 <1 <1 12/05/2012 277620 F14 PUDDLE <1 <1 <1 <10 <1 <1 4.00 <1 <1

Number of samples 65 65 65 65 65 65 65 65 65 Minimum value 1.00 1.00 1.00 10.00 1.00 1.00 1.00 1.00 1.00 Maximum value 10.00 290.00 610.00 100.00 16000.00 21.00 900.00 50.00 10.00 Second highest value 4.00 240.00 510.00 10.00 14000.00 13.00 800.00 49.00 4.00 Range 1- 10 1- 290 1- 610 10- 100 1- 16000 1- 21 1- 900 1- 50 1- 10

Average concentration 1.25 12.94 30.85 11.38 601.48 1.88 44.18 3.85 1.29

Number of exceedances 0 3 1 0 4 0 4 9 0

% above assessment criteria 0.00 4.62 1.54 0.00 6.15 0.00 6.15 13.85 0.00

Assessment criteria 13700 37.3 548 - 1660 96400 222 2 4100

Source of assessment criteria WSV WSV WSV - WSV WSV WSV WSV WSV

Hauxton GW assessment WSVs A_HB.xls/Hauxton waters 2/3

Hauxton Post-Remediation Human Health Risk Assessment

Appendix D. DQRA Input Parameters

Wat Sol (v1.01 est) = 25.574 mg/L

ECOSAR Class Program (ECOSAR v1.00): Class(es) found: Benzyl Halides

Henrys Law Constant (25 deg C) [HENRYWIN v3.20]: Bond Method : 2.60E-004 atm-m3/mole (2.63E+001 Pa-m3/mole) Group Method: Incomplete For Henry LC Comparison Purposes: User-Entered Henry LC: not entered Henrys LC [via VP/WSol estimate using User-Entered or Estimated values]: HLC: 1.480E-003 atm-m3/mole (1.500E+002 Pa-m3/mole) VP: 0.125 mm Hg (source: MPBPVP) WS: 21.7 mg/L (source: WSKOWWIN)

Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]: Log Kow used: 3.90 (KowWin est) Log Kaw used: -1.973 (HenryWin est) Log Koa (KOAWIN v1.10 estimate): 5.873 Log Koa (experimental database): None

Probability of Rapid Biodegradation (BIOWIN v4.10): Biowin1 (Linear Model) : 0.2645 Biowin2 (Non-Linear Model) : 0.0052 Expert Survey Biodegradation Results: Biowin3 (Ultimate Survey Model): 2.0575 (months ) Biowin4 (Primary Survey Model) : 3.1153 (weeks ) MITI Biodegradation Probability: Biowin5 (MITI Linear Model) : 0.2426 Biowin6 (MITI Non-Linear Model): 0.0174 Anaerobic Biodegradation Probability: Biowin7 (Anaerobic Linear Model): 0.1989 Ready Biodegradability Prediction: NO

Hydrocarbon Biodegradation (BioHCwin v1.01): Structure incompatible with current estimation method!

Sorption to aerosols (25 Dec C)[AEROWIN v1.00]: Vapor pressure (liquid/subcooled): 55.2 Pa (0.414 mm Hg) Log Koa (Koawin est ): 5.873 Kp (particle/gas partition coef. (m3/ug)): Mackay model : 5.43E-008 Octanol/air (Koa) model: 1.83E-007 Fraction sorbed to airborne particulates (phi): Junge-Pankow model : 1.96E-006 Mackay model : 4.35E-006 Octanol/air (Koa) model: 1.47E-005

Atmospheric Oxidation (25 deg C) [AopWin v1.92]: Hydroxyl Radicals Reaction: OVERALL OH Rate Constant = 0.3573 E-12 cm3/molecule-sec Half-Life = 29.938 Days (12-hr day; 1.5E6 OH/cm3) Ozone Reaction: No Ozone Reaction Estimation Fraction sorbed to airborne particulates (phi): 3.16E-006 (Junge-Pankow, Mackay avg) 1.47E-005 (Koa method) Note: the sorbed fraction may be resistant to atmospheric oxidation

Soil Adsorption Coefficient (KOCWIN v2.00): Koc : 1001 L/kg (MCI method) Log Koc: 3.000 (MCI method) Koc : 2423 L/kg (Kow method) Log Koc: 3.384 (Kow method)

Aqueous Base/Acid-Catalyzed Hydrolysis (25 deg C) [HYDROWIN v2.00]: Rate constants can NOT be estimated for this structure!

Bioaccumulation Estimates (BCFBAF v3.00): Log BCF from regression-based method = 2.238 (BCF = 172.8 L/kg wet-wt) Log Biotransformation Half-life (HL) = 0.2439 days (HL = 1.753 days) Log BCF Arnot-Gobas method (upper trophic) = 2.591 (BCF = 389.6) Log BAF Arnot-Gobas method (upper trophic) = 2.591 (BAF = 390.1) log Kow used: 3.90 (estimated)

Volatilization from Water: Henry LC: 0.00026 atm-m3/mole (estimated by Bond SAR Method) Half-Life from Model River: 4.575 hours Half-Life from Model Lake : 167.1 hours (6.964 days)

Removal In Wastewater Treatment: Total removal: 32.75 percent Total biodegradation: 0.26 percent Total sludge adsorption: 24.33 percent Total to Air: 8.15 percent (using 10000 hr Bio P,A,S)

Level III Fugacity Model: Mass Amount Half-Life Emissions (percent) (hr) (kg/hr) Air 3.73 719 1000 Water 9.8 1.44e+003 1000 Soil 85.8 2.88e+003 1000 Sediment 0.635 1.3e+004 0 Persistence Time: 1.31e+003 hr Hauxton Input Parameters for RBCA version 2.5

Residential

Table 1 Source input parameters and justifications for residential land use

Parameter Value Justification Soil and Groundwater Source and Site Characteristics Inputs Depth to water bearing 1.67 m The depth of the shallowest exceedance unit identified in groundwater has been used. Capillary zone thickness 25.86 cm In the absence of information within SR3, calculated using Equations 8, 9 and 10 in USEPA ‘User's guide for evaluating subsurface vapour intrusion into buildings, 2004’ using sandy clay loam grain size of 0.029cm (from the reference above).

Total porosity in 0.53 CLEA Report, SR3, Table 4.4 value for sandy unsaturated zone cm 3/cm 3 clay loam (considered to be conservative description of Type B materials used for reinstatement - West Melbury Chalk Formation and cohesive Made Ground). Volumetric air content in 0.16 CLEA Report, SR3, Table 4.4 value for sandy soil source cm 3/cm 3 clay loam (considered to be conservative description of Type B materials used for reinstatement - West Melbury Chalk Formation and cohesive Made Ground). Volumetric water content 0.37 CLEA Report, SR3, Table 4.4 value for sandy in soil source cm 3/cm 3 clay loam (considered to be conservative description of Type B materials used for reinstatement - West Melbury Chalk Formation and cohesive Made Ground). Fraction organic carbon 0.0348 As part of the remediation soils were amended in soil source with mushroom compost and analytical data for the site indicate that the SOM level has been increased significantly. A conservative SOM value of 6% has been used which is considered to represent a typical Made Ground with high organic content. An FOC value equivalent to an SOM of 6% has been used. Not a sensitive parameter in modelling. Dry bulk density 1.8 kg/L Mean site-specific value derived from 250 in- (1.8 g/cm 3) situ measurements recorded in the reinstated Type B material using a nuclear density gauge. Calculated by Vertase FLI and presented in their Post Remediation QRA for Controlled Waters (July 2012). Vertical hydraulic 2.2x10 -5 Mean site-specific value (2.2e -7 m/s) based on conductivity cm/s range of permeabilities in the reinstated Type B material as calculated by Vertase FLI and 1.9008 cm/d presented in their Post Remediation QRA for Controlled Waters (July 2012).

1

Convert per second to per day (60 x 60 x 24) = 86400 Vapour permeability 1.7899E-14 Calculated using a vertical hydraulic m2 conductivity of 2. X 10 -5 cm/s and using calculations A4-A8 in SR3. Groundwater pH 7 A neutral pH has been assumed as it does not influence the modelling. Groundwater plume 100 m Width of area of potential plume beneath the width at source (10000 cm) former production area is less than 100m. Transport model Johnson and Ettinger for soil and groundwater volatilisation for selection indoor. Combination surface soil/Johnson and Ettinger for outdoor. Transport modelling TRUE Disable mass balance limit options

Table 2 Receptor input parameters and justifications (residential land use)

Parameter Value Justification Receptor Characteristics and Inhalation Inputs Receptor type residential Chosen based on land use and child receptor.

Averaging time for 6 years CLEA Report, SR3, Box 3.1 default for a carcinogens female 0 to 6 year old child. Averaging time for non- carcinogens Averaging time for vapour flux Exposure Duration Bodyweight 13.3 kg Time averaged value using default mean body weights from CLEA Report, SR3, Table 4.6 for a 0 to 6 year old female child. Indoor Inhalation Rate 11.85 CLEA Report, SR3, Table 4.14. Time averaged m3/day value for a female child aged 0 to 6 years. Not directly entered in RBCA. Time indoors 21.67 Not directly entered into RBCA. hours/day The child is assumed to spend 365 days on site with 23 hours indoors for AC 1-4 and 19 hours for AC 5-6. Time spent inside has been time averaged as this parameter varies over the first six years of life as shown in Table 3.2 of CLEA Report, SR3. Exposure Frequency 1027.56 RBCA exposure frequency adapted to reflect Adjusted for RBCA days/year UK default exposure frequency, inhalation rate Indoors and hours on site. RBCA reference inhalation rate is 20 m3 for a 70 kg receptor. This has been adjusted to take into account the child weight and inhalation rate above, resulting in a comparatively high exposure frequency.

2

Table 3 Building input parameters (residential land use)

Building Parameter Value Justification Cross-section area of 28 m 2 CLEA Report, SR3, Table 4.21 value for a two- building storey small terraced house. Volume of building 134.4 m 3 Area multiplied by living space height of 4.8m from CLEA Report, SR3, Table 4.21 value for a two-storey small terraced house. Building volume/area 4.8 m Living space height for a two-storey small ratio terraced house from CLEA Report, SR3, Table 4.21. Foundation perimeter 21.17 m Square root of the cross-section area of building multiplied by 4. CLEA Report, SR3, Table 4.21 value for a two-storey small terraced house. Building air exchange 12 per day CLEA Report, SR3, Table 4.21 gives an air rate exchange rate for living space of 0.5 /hour, which gives an air exchange rate of 12 per day. Foundation thickness 0.15 m CLEA Report, SR3, Table 4.21 value for a two- storey small terraced house. Depth to bottom of 0.15 m CLEA Report, SR3, Table 4.21 value for a two- foundation slab storey small terraced house. Indoor/ outdoor 31 g/cm.s -2 CLEA Report, SR3, Table 4.21 value for a two- differential pressure (3.1 Pa) storey small terraced house. Conversion of Pa to g/cm.s -2 by multiplying by ten. Fraction of cracks 0.0015 CLEA Report, SR3, Table 4.21. Area of floor crack divided by area of floor of a two-storey small terraced house. Air content in cracks 0.16 (-) Assumed to have same properties as material surrounding the foundations). CLEA Report, SR3, Table 4.4 value for sandy clay loam (considered to be conservative description of Type B materials used for reinstatement - West Melbury Chalk Formation and cohesive Made Ground). Water content in cracks 0.37 (-) Assumed to have same properties as material surrounding the foundations). CLEA Report, SR3, Table 4.4 value for sandy clay loam (considered to be conservative description of Type B materials used for reinstatement - West Melbury Chalk Formation and cohesive Made Ground).

3

Calculation Control Sheet 1

Estimate Intrinsic Permeability based on soil type

Soil Type sandy clay loam Building type Small terrace ki soil intrinsic permeability cm2 Ks soil saturated hydraulic conductivity cm.s-1 2.20E-05 Site specific µw dynamic viscosity of water g.cm-1.s-1 0.01307 From Equation A6., Appendix 1, SR3 pw density of water g.cm-³ 0.999 From Equation A6., Appendix 1, SR3 g acceleration due to gravity cm.s-2 980 From Equation A6., Appendix 1, SR3 ki soil intrinsic permeability cm2 2.93702E-10 From Equation A6., Appendix 1, SR3

Comments Saturated hydraulic conductivity based on a sandy clay loam Minimum of 1m of MG across the site, therefore MG properties appropriate. MG is summarised as gravelly sandy clay or dense clayey sand Sandy clay loam has been used as a conservative soil type to reflect the variability in composition and thickness. Calculation Control Sheet 2

Estimate relative air permeability

Krg relative air permeability unitless Ste effective total fluid saturation unitless 0.549296 From Calc Control Sheet 3 M van Genuchten shape parameter unitless 0.3098 From Table 4.4, SR3

Krg relative air permeability unitless 0.609428 From Equation A5, Appendix 1, SR3

Comments van Genuchten shape parameter based on a sandy clay loam Calculation Control Sheet 3

Estimate effective total fluid saturation

Ste effective total fluid saturation unitless θw water filled porosity cm³/cm³ 0.37 From Table 4.4, SR3 θt total porosity cm³/cm³ 0.53 From Table 4.4, SR3 θr residual soil water content cm³/cm³ 0.175 Site Specific Data

Ste effective total fluid saturation unitless 0.549296 From Equation A4, Appendix 1, SR3

Comments Porosity values based on a sandy clay loam Calculation Control Sheet 4

Estimate effective air permeability

Calculation of: Kv effective air permeability in cm² Ki soil intrinsic permeability cm² 2.93702E-10 From Calc Control Sheet 1 Krg relative air permeability unitless 0.609428235 From Calc Control Sheet 2

Kv effective air permeability 1.7899E-10 cm² From Equation A7, Appendix 1, SR3 1.7899E-14 m² Calculation Control Sheet 5

To Calculate Crack Radius rcrack equivalent crack radius Acrack Area of total cracks between floor and wall 423.3 cm² Default value for a small terraced house in SR3 AB Area of enclosed space below ground 280000 cm² Default value for a small terraced house in SR3 From Table 4.21, SR3 (based on building footprint- assumed to be AB) Xcrack Floor-wall seam perimeter 2116.601049 cm and Equation A2, Appendix 1, SR3

η 0.001511786 rcrack Effective crack radius 0.20 cm From Equation A3, Appendix 1, SR3

Comments Calculated based on a Small terrace Calculation Control Sheet 6

Calculation for Qsoil / Q building

To calculate Q soil Based on a sandy clay loam

Q Soil Soil Gas Advection Rate

Kv effective air permeability 1.79E-10 cm2 From Calc Control Sheet 4 P Pressure Difference 3.1 Pa From Table 4.21, SR3 Xcrack crack length (Perimeter) 2116.601049 cm From Calc Control Sheet 5

µa air viscosity 0.000175414 g/cm.s From Equation A8, Appendix 1, SR3 (soil temperature = 10C) Zcrack depth to edge crack 15 cm From Table 4.21, SR3 (foundation thickness ) rCrack Effective crack radius 0.199990 cm From Calc Control Sheet 5

Q Soil 0.083955574 cm3/s (Soil gas intrusion rate into sand layer) From Equation A9, Appendix 1, SR3

To Calculate Q Building Based on a Small terrace

Q Building Building Gas Advection Rate Afoot Building footprint 280000 cm2 From Table 4.21, SR3 (building footprint)

Hb Height of living space 480 cm From Table 4.21, SR3 (small terraced house)

ER Exchange rate 0.5 1/h From Table 4.21, SR3 (small terraced house)

Q Building 18666.66667 cm3/s From Equation 10.5, SR3

Qsoil/Qbuilding ratio = 4.49762E-06

Hauxton Post-Remediation Human Health Risk Assessment

Appendix E. DQRA Modelling

RBCA Tool Kit for Chemical Releases, Version 2.52

RBCA SITE ASSESSMENT RBCA SITE ASSESSMENT

1 OF 8 TIER 2 EXPOSURE CONCENTRATION AND INTAKE CALCULATION TIER 2 EXPOSURE CONCENTRATION AND INTAKE CALCULATION

INDOOR AIR EXPOSURE PATHWAYS o (Checked if Pathway is Complete)

SOILS : VAPOR INTRUSION INTO BUILDINGS 1) Source Medium 2) NAF Value (L/kg) 3) Exposure Medium 4) Exposure Multiplier 5) Average Inhalation Exposure Receptor Indoor Air: POE Conc. (mg/m^3) (1) / (2) (EFxED)/(ATx365) (unitless) Concentration (mg/m^3) (3) X (4) On-site On-site On-site On-site (0 m) (0 m) (0 m) (0 m)

Soil Conc. (mg/kg) None None None None Constituents of Concern Cis 1,2 Dichloroethene 1,2-dichloroethane Tetrachloroethene Trichloroethene Vinyl chloride * * = Chemical with user-specified data NOTE: AT = Averaging time (days) EF = Exposure frequency (days/yr) ED = Exposure duration (yr) NAF = Natural attenuation factor POE = Point of exposure

Site Name: Hauxton - I18 Date Completed: 14-Dec-12 Site Location: Cambridgeshire Job ID: Completed By: TM RBCA Tool Kit for Chemical Releases, Version 2.52

RBCA SITE ASSESSMENT RBCA SITE ASSESSMENT

1 OF 8 2 OF 8 TIER 2 EXPOSURE CONCENTRATION AND INTAKE CALCULATION TIER 2 EXPOSURE CONCENTRATION AND INTAKE CALCULATION

INDOOR AIR EXPOSURE PATHWAYS n (Checked if Pathway is Complete)

GROUNDWATER: VAPOR INTRUSION Exposure Concentration INTO BUILDINGS 1) Source Medium 2) NAF Value (m^3/L) 3) Exposure Medium Receptor Indoor Air: POE Conc. (mg/m^3) (1) / (2) On-site Off-site 1 Off-site 2 On-site Off-site 1 Off-site 2 (0 m) (0 m) (0 m) (0 m) (0 m) (0 m)

Groundwater Conc. Residential None None None None None Constituents of Concern (mg/L) Cis 1,2 Dichloroethene 2.5E-2 3.1E+3 8.0E-6 1,2-dichloroethane 1.0E-3 9.8E+3 1.0E-7 Tetrachloroethene 1.0E-2 7.5E+2 1.3E-5 Trichloroethene 2.0E-3 1.3E+3 1.6E-6 Vinyl chloride * 7.0E-3 3.1E+2 2.3E-5

NOTE: AT = Averaging time (days) EF = Exposure frequency (days/yr) ED = Exposure duration (yr) NAF = Natural attenuation factor POE = Point of exposure

Site Name: Hauxton - I18 Date Completed: 14-Dec-12 Site Location: Cambridgeshire Job ID: Completed By: TM RBCA Tool Kit for Chemical Releases, Version 2.52

RBCA SITE ASSESSMENT RBCA SITE ASSESSMENT

2 OF 8 3 OF 8 TIER 2 EXPOSURE CONCENTRATION AND INTAKE CALCULATION TIER 2 EXPOSURE CONCENTRATION AND INTAKE CALCULATION

INDOOR AIR EXPOSURE PATHWAYS

GROUNDWATER: VAPOR INTRUSION INTO BUILDINGS 4) Exposure Multiplier 5) Average Inhalation Exposure (EFxED)/(ATx365) (unitless) Concentration (mg/m^3) (3) X (4) On-site Off-site 1 Off-site 2 On-site Off-site 1 Off-site 2 (0 m) (0 m) (0 m) (0 m) (0 m) (0 m)

None None None None None None Constituents of Concern Cis 1,2 Dichloroethene 2.8E+0 2.2E-5 1,2-dichloroethane 2.8E+0 2.9E-7 Tetrachloroethene 2.8E+0 3.7E-5 Trichloroethene 2.8E+0 4.5E-6 Vinyl chloride * 2.8E+0 6.5E-5 * = Chemical with user-specified data NOTE: AT = Averaging time (days) EF = Exposure frequency (days/yr) ED = Exposure duration (yr) NAF = Natural attenuation factor POE = Point of exposure

Site Name: Hauxton - I18 Date Completed: 14-Dec-12 Site Location: Cambridgeshire Job ID: Completed By: TM RBCA Tool Kit for Chemical Releases, Version 2.52

RBCA SITE ASSESSMENT RBCA SITE ASSESSMENT

3 OF 8 4 OF 8 TIER 2 EXPOSURE CONCENTRATION AND INTAKE CALCULATION TIER 2 EXPOSURE CONCENTRATION AND INTAKE CALCULATION

INDOOR AIR EXPOSURE PATHWAYS o (Checked if Pathway is Complete)

SOIL LEACHING TO GW- VAPOR INTRUSION Exposure Concentration INTO BUILDINGS 1) Source Medium 2) NAF Value (m^3/L) 3) Exposure Medium Receptor Indoor Air: POE Conc. (mg/m^3) (1) / (2) On-site Off-site 1 Off-site 2 On-site Off-site 1 Off-site 2 (0 m) (0 m) (0 m) (0 m) (0 m) (0 m)

Soil Conc. (mg/kg) None None None None None None Constituents of Concern Cis 1,2 Dichloroethene 1,2-dichloroethane Tetrachloroethene Trichloroethene Vinyl chloride *

NOTE: AT = Averaging time (days) EF = Exposure frequency (days/yr) ED = Exposure duration (yr) NAF = Natural attenuation factor POE = Point of exposure

Site Name: Hauxton - I18 Date Completed: 14-Dec-12 Site Location: Cambridgeshire Job ID: Completed By: TM RBCA Tool Kit for Chemical Releases, Version 2.52

RBCA SITE ASSESSMENT RBCA SITE ASSESSMENT

4 OF 8 5 OF 8 TIER 2 EXPOSURE CONCENTRATION AND INTAKE CALCULATION TIER 2 EXPOSURE CONCENTRATION AND INTAKE CALCULATION

INDOOR AIR EXPOSURE PATHWAYS

SOIL LEACHING TO GW- VAPOR INTRUSION INTO BUILDINGS 4) Exposure Multiplier 5) Average Inhalation Exposure (EFxED)/(ATx365) (unitless) Concentration (mg/m^3) (3) X (4) On-site Off-site 1 Off-site 2 On-site Off-site 1 Off-site 2 (0 m) (0 m) (0 m) (0 m) (0 m) (0 m)

None None None None None None Constituents of Concern Cis 1,2 Dichloroethene 1,2-dichloroethane Tetrachloroethene Trichloroethene Vinyl chloride * * = Chemical with user-specified data NOTE: AT = Averaging time (days) EF = Exposure frequency (days/yr) ED = Exposure duration (yr) NAF = Natural attenuation factor POE = Point of exposure

Site Name: Hauxton - I18 Date Completed: 14-Dec-12 Site Location: Cambridgeshire Job ID: Completed By: TM RBCA Tool Kit for Chemical Releases, Version 2.52

RBCA SITE ASSESSMENT RBCA SITE ASSESSMENT

5 OF 8 6 OF 8 TIER 2 EXPOSURE CONCENTRATION AND INTAKE CALCULATION TIER 2 PATHWAY RISK CALCULATION

INDOOR AIR EXPOSURE PATHWAYS

MAXIMUM PATHWAY EXPOSURE (mg/m^3) (Maximum average exposure concentration from soil and groundwater routes.) On-site Off-site 1 Off-site 2 (0 m) (0 m) (0 m)

Residential None None Constituents of Concern Cis 1,2 Dichloroethene 2.2E-5 1,2-dichloroethane 2.9E-7 Tetrachloroethene 3.7E-5 Trichloroethene 4.5E-6 Vinyl chloride * 6.5E-5

Site Name: Hauxton - I18 Date Completed: 14-Dec-12 Site Location: Cambridgeshire Job ID: Completed By: TM RBCA Tool Kit for Chemical Releases, Version 2.52

RBCA SITE ASSESSMENT RBCA SITE ASSESSMENT

6 OF 8 7 OF 8 TIER 2 PATHWAY RISK CALCULATION TIER 2 PATHWAY RISK CALCULATION

INDOOR AIR EXPOSURE PATHWAYS n (Checked if Pathway is Complete) CARCINOGENIC RISK (1) Carcinogenic (2) Maximum Carcinogenic (3) Inhalation (4) Individual COC Classification Exposure (mg/m^3) Unit Risk Factor Risk (2) x (3) x 1000 On-site Off-site 1 Off-site 2 On-site Off-site 1 Off-site 2 (0 m) (0 m) (0 m) (0 m) (0 m) (0 m) (µg/m^3)^-1 Residential None None Residential None None Constituents of Concern Cis 1,2 Dichloroethene FALSE - - - - 1,2-dichloroethane FALSE - - - - Tetrachloroethene FALSE - - - - Trichloroethene FALSE - - - - Vinyl chloride * FALSE - - - -

Total Pathway Carcinogenic Risk =

Site Name: Hauxton - I18 Date Completed: 14-Dec-12 Site Location: Cambridgeshire Job ID: Completed By: TM RBCA Tool Kit for Chemical Releases, Version 2.52

RBCA SITE ASSESSMENT

7 OF 8 8 OF 8 TIER 2 PATHWAY RISK CALCULATION

INDOOR AIR EXPOSURE PATHWAYS n (Checked if Pathway is Complete) TOXIC EFFECTS (5) Maximum Toxicant (6) Inhalation (7) Individual COC Exposure (mg/m^3) Reference Concentration Hazard Quotient (5) / (6) On-site Off-site 1 Off-site 2 On-site Off-site 1 Off-site 2 (0 m) (0 m) (0 m) (0 m) (0 m) (0 m) (mg/m^3) Residential None None Residential None None Constituents of Concern Cis 1,2 Dichloroethene 2.2E-5 2.0E-2 1.1E-3 1,2-dichloroethane 2.9E-7 4.2E-4 6.8E-4 Tetrachloroethene 3.7E-5 2.1E-1 1.8E-4 Trichloroethene 4.5E-6 1.8E-2 2.4E-4 Vinyl chloride * 6.5E-5 1.1E-3 6.1E-2

Total Pathway Hazard Index = 6.4E-2

Site Name: Hauxton - I18 Date Completed: 14-Dec-12 Site Location: Cambridgeshire Job ID: Completed By: TM

Hauxton Post-Remediation Human Health Risk Assessment

Appendix F. Detailed Human Health Risk Assessment

Hauxton Post-Remediation Human Health Risk Assessment

F.1. Side, Base and Trial pit Validation Human Health DQRA

Revised SV, BV, TP validation samples assessment

Phenoxy Phenoxy Sum of Indane, 1-ethyl- Acetic Acetic 1-(2- 3-methylbenzene, 1- acid Phenoxy acid 2-Methyl- Chloroeth Mixed Meta/Par ethyl-3-methylbenzene, herbicide: Acetic acid herbicide: 2,4,6- 4,6- 4-Chloro-2- Bis (2- 1,2- 1,2- Cis-1,2- Vinyl oxy)-2-(o- Trichloro 1- Trichloro(chl Trichloro isomers of a TPH C8-14, 1-ethyl-3- Electrical Ethofumesa Dichlorpr herbicide: Mecopro Trichlorophe dinitrophe methylphen chloroethyl) Dichlorobe Dichloroeth Dichloroeth Cyclohex Tetrachloro Trichloroeth chloride Tolyloxy)- Dichloromethyl benzenea Trichlorometh Dichloromethy Methylnap Dichlorotolue Trichlorobenz oromethyl)b nitrobenz DDD DDE Ethyltolue TPH (C8- methylbenzene, 1-ethyl- Report Column Conductivity pH Moisture Dimefox te Hempa Schradan Simazine Dicamba op MCPA p nol nol ol ether Phenol nzene ane ylene anone ethylene Toluene ylene monomer Xylene (Total) ethane phenol mine ylbenzene lbenzene thalene ne ene enzene ene and DDT ne C14) Copper Lead Manganese Nickel Zinc 2-methylphenol 4-methylbenzene Report Date Number BV Reference Row Column Letters Zone Depth µS/CM % µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg 10/11/2011 256346 A18 SVS A 18 1 1 2200 8.2 8 <10 90 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 6 <1 <5 <5 <1 0 10/11/2011 256346 A17 SVE A 17 1 1.5 2200 8 9.2 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 10/11/2011 256346 A17 SVN A 17 1 1.5 2000 9.4 20 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 31/08/2011 248299 B22 6.0M B 22 1 1.5 2200 9 20 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <25 <25 <25 <50 <25 <5 <25 <25 <5 0 19/08/2011 246822 B20 1.6M B 20 2S 1.6 2000 8.5 17 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 3 <5 <5 <1 0 10/11/2011 256349 B17 SVN B 17 1 1 2200 7.8 11 <10 50 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 12 <1 <5 <5 <1 0 31/08/2011 248299 B20 5.5M B 20 1 5.5 2100 9.1 21 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 68 <1 <5 <5 <1 0 12/08/2011 246185 B17 2.5M B 17 1 1 2000 8.3 18 <10 20 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 10/11/2011 256349 B17 BV B 17 1 1 2100 8 12 <10 50 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 2 0 10/11/2011 256349 B17 SVS B 17 1 1 2100 7.9 9.3 <10 70 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 22/08/2011 247012 B18 4.7 B 18 2S 4.7 2100 8.4 16 <10 <10 <10 <10 <10 <0.01 <0.01 <0.01 <0.01 <0.1 <0.1 <0.1 <0.1 <0.1 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 22/08/2011 247012 B19 5.2 B 19 2S 5.2 2100 8.5 15 <10 <10 <10 <10 <10 <0.01 <0.01 <0.01 <0.01 <0.1 <0.1 <0.1 <0.1 <0.1 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 31/08/2011 248299 B21 4.9M B 21 1 4.9 2100 9 18 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 27/09/2011 251190 C16 BV (CS) C 16 1 4 2400 7.9 9.2 <10 70 <10 <10 <10 <10 <10 <10 <10 <100 <100 100 <100 <100 <10 <10 <10 <20 300 <2 <10 <10 <2 9300 0 30/09/2011 251696 C15 BV C 15 4 2500 7.9 22 <10 <10 2400 240 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 26 <1 11 <5 <1 0 10/11/2011 256349 C17 SVN C 17 1 2.5 2200 8.1 11 <10 140 20 <10 20 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 5 <1 47 <5 <1 0 19/08/2011 246822 C19 2.0M C 19 2S 2 2100 8.3 19 <10 <10 20 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 4 <5 <5 <1 0 10/11/2011 256349 C17 SVSW C 17 1 2.5 2100 7.9 9.9 <10 20 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 6 <1 <5 <5 <1 0 10/11/2011 256349 C17 BV C 17 1 2.5 2100 8.1 13 <10 60 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 10/11/2011 256349 C17 SVNE C 17 1 2.5 2200 8.3 9.2 <10 50 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 19/08/2011 246822 C20 5.5M C 20 2S 5.5 1700 8.5 19 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 19/08/2011 246823 C21 4.9M C 21 2S 4.9 2000 8.5 16 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 08/04/2010 195540 C22 C 22 2S 2.2 1900 8.2 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 19/07/2011 243419 C23 4M C 23 1 4 2100 8.8 14 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 12/04/2010 195723 C24 C 24 1 2 1900 8.4 <10 <10 <10 <10 <10 <50 <50 <50 <50 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 01/12/2010 220489 TP D16a D 16 a 2S 3.5 2500 8.5 22 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 46 2 7 <5 3 0 12/01/2011 223851 D15 A D 15 A 1 4 1900 8.5 20 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 150 <1 28 <5 <1 0 01/12/2010 220489 TP D17 D 17 2S 3 2500 8.7 22 <10 <10 120 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 9 <10 190 <1 52 <5 <1 0 19/09/2011 250160 D24 5.5M D 24 3 5.5 2100 8.2 14 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 1 59 <5 <1 0 19/09/2011 250160 D23 5.5M D 23 3 5 2200 8.1 13 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 72 <5 <1 0 19/08/2011 246823 D18 2.5M D 18 2S 2.5 1700 8.3 17 <10 30 80 10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 36 <1 <5 <5 <1 0 01/12/2010 220489 TP D16b D 16 b 2S 3.5 2500 8.3 24 <10 <10 50 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 13 <10 <5 <1 <5 <5 <1 0 12/01/2011 223853 D14 D 14 1 2.5 1900 8.4 19 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 27/09/2011 251180 D14 BV D 14 1 2.5 2000 8.7 17 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 12/01/2011 223851 D15 B D 15 B 1 4 1900 8.7 15 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 27/09/2011 251180 D15 BV D 15 1 4 2000 8.4 18 <10 20 <10 <10 <10 <10 10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 19/08/2011 246822 D19 1.0M D 19 2S 1 2000 8.5 5.5 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 12/09/2011 249223 D20 4.9M D 20 2S 4.9 2100 8.3 17 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 08/09/2011 249227 D21 4.6M D 21 2S 4.6 2100 8.2 16 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 22/08/2011 247009 D22 4.5 D 22 2S 4.5 2000 8.4 19 <10 <10 <10 <10 <10 <0.01 <0.01 <0.01 <0.01 <0.1 <0.1 <0.1 <0.1 <0.1 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 21/11/2011 257595 D25 5m D 25 3 2.5 2000 8.3 15 <10 <10 <10 <10 <10 <10 <10 <10 10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 16/12/2010 221996 TP D16B D 16 b 2S 4 0.3 0 16/12/2010 221996 TP D17 D 17 2S 3.5 0.1 0 19/10/2011 253608 E19 SVE E 19 2S 5 2200 8.2 20 <10 <10 190 <10 <10 <10 <10 <10 20 <100 <100 <100 <100 <100 7 <5 <5 <10 640 <1 <5 <5 <1 780 550 0 19/10/2011 253608 E19 BV E 19 2S 5 2200 8.3 20 <10 <10 590 60 <10 20 <10 10 30 <100 <100 110 <100 <100 670 <10 <10 <20 3000 <2 130 <10 7 11110 1070 0 19/10/2011 253608 E19 SVN E 19 2S 5 2200 8.4 11 <10 <10 130 <10 <10 <10 <10 <10 20 <100 <100 <100 <100 <100 <5 <5 <5 <10 14 <1 <5 <5 <1 280 0 20/01/2011 224432 E13 E 13 1 4 2100 7.8 22 <10 20 <10 <10 <10 <10 <10 <10 <10 <100 <100 530 <100 <100 <25 <25 62 <50 41 <5 44 <25 180 0 20/01/2011 224432 E12 E 12 1 2.5 2000 8.2 17 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <25 <25 <25 <50 <25 <5 <25 <25 <5 0 31/08/2011 248300 E17 5M E 17 2S 2.5 2200 8.6 21 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 37 1 7 <5 <1 0 30/09/2011 251696 E14 BV E 14 1 4 2500 7.8 23 <10 <10 200 <10 <10 <10 <10 10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 8 <5 <1 0 12/01/2011 223851 E14 A E 14 a 1 4 2100 8.6 15 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 9 <5 1 0 01/12/2010 220493 TP E16a E 16 a 2S 2 2300 8.1 26 <10 <10 10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 75 3 11 <5 6 0 01/12/2010 220493 TP E17 E 17 2S 2.5 2400 8 25 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 52 2 19 <5 3 0 27/09/2011 251180 E15 BV E 15 1 2 2100 8.8 14 <10 40 <10 <10 10 40 <10 70 30 140 <100 <100 <100 <100 8 <5 <5 <10 14 5 31 <5 130 0 19/09/2011 250160 E24 5.5M E 24 3 5.5 2300 7.9 13 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 87 <5 <1 0 11/10/2011 252148 E13 SVE E 13 1 4 2100 7.8 16 <10 <10 <10 <10 <10 <10 <10 <10 20 <100 <100 1000 <100 <100 <5 <5 <5 <10 <5 1 <5 <5 490 553 2000 2000 01/12/2010 220493 TP E16b E 16 b 2S 2 2500 8.4 23 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 2 <5 <5 5 0 19/10/2011 253608 E19 SVS E 19 2S 4.5 2400 8.4 15 <10 <10 610 1900 <10 20 <10 <10 10 <100 <100 <100 <100 <100 <5 <5 <5 <10 20 <1 <5 <5 <1 0 12/01/2011 223851 E14 B E 14 b 1 4 2000 8.4 18 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 12/01/2011 223853 E15 A E 15 a 1 2 2000 8.6 19 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 12/01/2011 223853 E15 B E 15 b 1 2 2000 8.8 21 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 27/09/2011 251190 E16 BV (CS) E 16 2S 2 2000 8.7 38 <10 20 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 12/09/2011 249231 E20 4.7M E 20 2S 4.7 <10 8.9 17 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 12/09/2011 249223 E21 4.9M E 21 2S 4.9 2200 8 18 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 19/08/2011 246997 E22 4.5M E 22 2S 4.5 2000 9.3 16 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 23/08/2011 247000 E23 4.5M E 23 3 4.5 2100 8.4 14 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 12/04/2010 195723 E25 E 25 3 1 1900 8.6 <10 <10 <10 <10 <10 <50 <50 <50 <50 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 09/12/2010 221370 TP E12 E 12 1 2 2400 8.2 23 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 09/12/2010 221373 TP E13 E 13 1 4 2400 8.1 22 <10 <10 170 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 30/09/2011 251696 E14 SV WEST E 14 1 4 2200 8.1 13 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 7 <5 <5 <10 <5 <1 <5 <5 <1 0 11/10/2011 252148 E13 BV E 13 1 4 2100 7.8 24 <10 <10 30 <10 <10 10 <10 <10 30 <100 <100 4300 <100 <100 <50 <50 <50 <100 <50 <10 <50 <50 140 118 0 16/12/2010 221994 TP E16A E 16 2S 2 <0.1 0 07/09/2011 249094 F19 4.4M F 19 2S 4.4 2400 9.8 20 <10 <10 <10 <10 <10 20 <10 <10 <10 <100 <100 <100 <100 <100 29 <5 <5 <10 2200 <1 30 <5 <1 120000 26000 9600 13000 13000 5000 0 28/10/2011 254891 F11 SVE F 11 1 3 2100 8.4 19 <10 <10 90 160 <10 <10 <10 10 20 <100 <100 <100 680 <100 10 <5 280 <10 12 <1 70 7 <1 0 20/01/2011 224432 F13 F 13 1 4 2100 7.9 18 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 76 <10 650 <1 13 10 7 0 23/09/2011 250748 F15 TRENCH F 15 2S 2.5 2400 11.1 30 <10 30 <10 <10 <10 <10 <10 12 160 <100 <100 1600 <100 <100 <5 <5 22 <10 <5 <1 8 <5 2 0 25/10/2011 254335 F17 3.9M F 17 2S 2.5 2100 8.2 19 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 9 <5 <1 0 23/09/2011 250748 F15 BV F 15 2S 2.5 2500 9.6 25 <10 30 <10 <10 <10 <10 <10 56 40 <100 <100 2400 <100 <100 <5 <5 <5 <10 <5 <1 11 <5 3 0 07/10/2011 252135 F16 2.65M F 16 2S 2.5 2200 8.8 24 <10 20 <10 <10 <10 <10 <10 40 50 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 17 <5 <1 0 28/10/2011 254891 F11 BV F 11 1 3 2400 8.3 19 <10 <10 1100 230 <10 10 <10 70 <10 <100 <100 2200 6800 <100 45 <5 31 <10 500 1 680 <5 7 0 09/12/2010 221370 TP F11 F 11 1 3 2300 9 25 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 520 <100 <100 <5 <5 48 <10 <5 1 <5 <5 5 0 11/10/2011 252148 F12 SVE F 12 1 4.5 2100 8.7 20 <10 100 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 6 <1 <5 <5 3 0 11/10/2011 252148 F12 BV F 12 1 4.5 2200 8.2 23 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 13 <1 <5 <5 1 0 12/09/2011 249095 E18 4.4M F 18 2S 1 2200 20 20 <10 <10 70 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 16 <1 <5 <5 <1 0 11/10/2011 252148 F12 SVW F 12 1 4.5 3300 7.7 20 <10 20 <10 <10 <10 <10 10 20 30 <100 <100 10000 2000 <100 <5 <5 <5 <10 28 <1 <5 <5 <1 0 09/12/2010 221373 TP F13 F 13 2S 4 2800 8.1 21 <10 <10 20 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 6 <10 <5 <1 <5 <5 <1 0 20/01/2011 224618 F16 A F 16 a 2S 2.5 2300 9 25 <10 40 <10 <10 <10 <10 <10 <10 10 <100 <100 <100 <100 <100 <5 <5 7 <10 <5 <1 <5 <5 <1 0 20/01/2011 224618 F16 B F 16 b 2S 2.5 2000 8.5 24 <10 <10 <10 <10 <10 <10 <10 <10 10 <100 <100 <100 <100 <100 <5 <5 11 <10 <5 <1 <5 <5 <1 0 20/01/2011 224432 F11 F 11 1 3 2800 8 22 <10 70 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 20/01/2011 224432 F12 F 12 2S 4.5 2300 8.1 20 <10 750 <10 <10 30 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 8 0 11/10/2011 252148 F13 SVE F 13 1 4 2100 8.7 15 <10 <10 <10 <10 <10 <10 <10 <10 10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 23/09/2011 250748 F14 SV W (CS) F 14 2S 2 2200 9.2 14 <10 50 <10 <10 <10 <10 <10 30 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 24/01/2011 224621 F15 A F 15 a 2S 2.5 2200 8.5 23 <10 <10 50 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 24/01/2011 224621 F15 B F 15 b 2S 2.5 2100 8.5 25 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 23/09/2011 250748 F15 SV S F 15 2S 2.5 2700 11 25 <10 <10 <10 <10 <10 23 <10 92 100 <100 <100 200 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 23/09/2011 250748 F15 SV W F 15 2S 2.5 2200 9.8 11 <10 <10 <10 <10 <10 <10 <10 120 40 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 25/10/2011 254134 F18 2.8M (CS) F 18 2S 1 2000 8.2 15 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 19/10/2011 253603 F19 BV F 19 2S 1.5 2200 7.7 14 <10 <10 30 60 <10 <10 <10 <10 30 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 19/10/2011 253603 F19 SVE (CS) F 19 2S 1.5 2200 8.3 13 <10 <10 130 70 <10 <10 <10 <10 10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 19/10/2011 253603 F19 SVN F 19 2S 1.5 2200 8.3 14 <10 30 140 90 <10 <10 <10 <10 10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 19/10/2011 253603 F19 SVS F 19 2S 1.5 2200 8.2 6.8 <10 <10 <10 90 <10 <10 <10 <10 20 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 28/10/2011 254852 F20 3.9M F 20 2S 1 2100 8.5 15 <10 20 <10 <10 <10 <10 <10 <10 10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 25/10/2011 254134 F21 4.0M F 21 2S 1 2000 8.3 15 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 14/09/2011 249835 F22 4.5 F 22 3 4.5 2100 8.3 14 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 22/08/2011 247003 F23 4.0M F 23 3 4.5 4300 8.4 18 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 14/09/2011 249837 F24 4.5M F 24 3 4.5 2100 8.5 13 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 12/04/2010 195723 F25 F 25 3 0.5 1900 8.5 <10 <10 <10 <10 <10 <50 <50 <50 <50 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 09/12/2010 221370 TP F12 F 12 1 4.5 2400 8.7 24 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 02/09/2011 248595 F12SVE F 12 2S 4.5 19 0 02/09/2011 248595 F12SVN F 12 2S 4.5 21 0 02/09/2011 248595 F12SVS F 12 2S 4.5 20 0 14/06/2011 239880 G16 BV G 16 2S 4.5 2900 8.5 18 <10 <10 <10 <10 <10 <10 <10 <10 260 <100 <100 <100 <100 <100 <5 <5 7 <10 <5 <1 <5 6 <1 0 19/09/2011 250154 G15 BV G 15 2S 4.5 2600 8.3 20 <10 50 10 <10 10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <25 <25 <25 <50 <25 <5 120 <25 <5 0 19/09/2011 250154 G14 BV G 14 2S 4.5 2500 8.2 20 <10 <10 <10 <10 <10 <10 <10 150 <10 <100 <100 100 <100 220 <25 <25 120 <50 <25 <5 1900 <25 12 0 03/08/2011 245225 G11 BV G 11 2S 4.5 2200 8.4 23 <10 20 2000 2500 <10 <10 20 50 90 <100 <100 3900 300 <100 150 <25 <25 <50 69 27 3700 <25 <5 3600 0 30/08/2011 248118 G8 BV G 8 2N 3 2500 8.3 16 <10 <10 200 30 <10 <10 <10 <10 20 <100 <100 100 3300 <100 <25 500 <25 <50 32 69 <25 <25 <5 0 03/08/2011 245225 G11 SVE G 11 2S 4.5 2000 8.5 20 <10 90 20 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 6 <5 <1 0 30/08/2011 248118 G10 BV G 10 1 4.5 2400 8.1 16 <10 <10 20 <10 <10 <10 <10 <10 10 <100 <100 100 1100 <100 <5 78 <5 <10 <5 150 7 <5 1 0 03/08/2011 245225 G12 SVE G 12 2S 5 2100 8.7 22 <10 130 <10 <10 <10 <10 <10 10 <10 <100 <100 100 <100 <100 <5 <5 <5 <10 <5 <1 7 <5 <1 0 02/11/2011 255401 G19 2.5M (CS) G 19 2S 1.5 <10 8.1 18 <10 <10 <10 <10 <10 <10 <10 <10 120 <100 <100 <100 <100 <100 <5 <5 <5 <10 26 <1 9 <5 <1 0 30/08/2011 248118 G9 BV G 9 1 3 2800 8.2 15 <10 <10 <10 <10 <10 <10 <10 <10 10 <100 <100 500 1300 <100 <5 44 7 <10 10 61 14 <5 <1 0 28/10/2011 254855 G17 3.1M (CS) G 17 2S 2.5 2300 8.3 24 <10 70 <10 <10 <10 <10 <10 <10 20 <100 <100 <100 <100 <100 <5 <5 <5 <10 28 <1 18 <5 <1 0 19/09/2011 250154 G14 SV E 2 G 14 2S 4 2200 8.4 16 <10 30 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 31 <5 <1 0 19/09/2011 250154 G14 SV E 1 G 14 2S 4 2200 8.6 18 <10 50 <10 <10 40 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 32 <5 <1 0 02/11/2011 255401 G18 3.5M G 18 2S 1.5 <10 8.3 18 <10 <10 <10 <10 <10 <10 <10 <10 10 <100 <100 <100 <100 <100 <5 <5 <5 <10 6 <1 48 <5 <1 0 11/10/2011 252148 G11 BV G 11 1 5 2300 9 22 <10 <10 330 10 <10 <10 30 <10 100 <100 <100 <100 <100 <100 <5 <5 180 <10 <5 5 58 <5 3 0 19/09/2011 250154 G15 SV E G 15 2S 4.5 2600 8.2 16 <10 1300 80 80 1600 20 <10 130 100 410 <100 150 170 <100 <5 <5 <5 <10 <5 <1 60 <5 <1 0 19/09/2011 250156 G10 BV 2S G 10 1 5 2600 7.9 18 <10 <10 460 10 <10 <10 <10 900 <10 <100 <100 320 270 <100 31 <5 16 <10 24 <1 98 <5 <1 0 19/09/2011 250156 G12 BV 2S G 12 2S 5 2400 8 19 <10 <10 40 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 73 <10 9 2 160 <5 <1 0 03/08/2011 245228 G8 BV G 8 1 3 3100 8.3 21 <10 70 80 10 <10 10 <10 1200 30 600 <100 6600 700 <100 7 900 58 <10 2100 1400 190 <5 78 0 19/09/2011 250156 G9 BV 2S G 9 1 3 2600 7.7 18 <10 <10 10 <10 <10 <10 <10 <10 <10 <100 <100 <100 590 <100 <5 <5 14 <10 14 <1 280 <5 <1 0 19/09/2011 250156 G11 BV 2S G 11 1 5 2900 7.9 17 <10 <10 180 <10 <10 12 <10 1100 <10 <100 <100 <100 <100 <100 9 <5 32 <10 200 <1 330 <5 <1 0 03/08/2011 245225 G12 BV G 12 2S 4.5 2600 8.2 22 <10 <10 410 80 <10 <10 20 <10 170 <100 <100 5000 900 <100 <5 16 1700 <10 23 22 1900 <5 85 500 0 03/08/2011 245225 G13 SVE G 13 2S 4.5 2200 9.6 18 <10 50 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 1 <5 <5 <1 0 23/09/2011 250748 G13 BV G 13 2S 4.5 2800 9.8 23 <10 <10 <10 <10 <10 <10 <10 <10 30 <100 <100 100 <100 <100 <5 <5 26 <10 <5 2 <5 <5 1 0 14/06/2011 239880 G16 SV G 16 2S 4.5 2800 8.7 18 <10 280 160 <200 <10 <10 <10 <10 100 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 4 0 02/11/2011 255401 G19 1.0M G 19 2S 1.5 <10 8.4 11 <10 <10 10 40 <10 <10 <10 <10 10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 25/10/2011 254129 G20 1.0M G 20 2S 1.5 1900 8.2 13 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 4 0 25/10/2011 254129 G21 2.95M G 21 2S 1 600 8.2 13 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 06/09/2011 248811 G22 2.7M G 22 3 1 2100 7.9 17 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 06/09/2011 248811 G23 2.5M G 23 3 1.5 2000 8.1 16 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 06/09/2011 248811 G24 2.5M G 24 3 1.5 2200 8.2 17 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 21/11/2011 257595 G25 1m G 25 3 1 2000 8 6.6 <10 <10 <10 <10 <10 <10 <10 <10 10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 17/11/2011 257086 G15 1.68M G 15 2S 4.5 19 60 0 14/09/2011 249465 H13 BV H 13 2S 3.5 2700 8.5 17 <10 50 <10 <10 <10 <10 <10 <10 <10 <100 <100 4000 770 <100 14 <5 29 <10 400 8 490 <5 7 510 540 0 11/07/2011 242714 H9 WALL H 9 2N 6 3600 8.8 18 <10 50 230 110 <10 30 20 2600 60 210 <100 2000 490 <100 25 1000 160 <10 580 580 170 11 12 0 14/06/2011 239880 H16 SV H 16 2S 4.5 2800 8.9 20 <10 <10 280 400 <10 <10 <10 <10 100 <100 <100 1000 <100 <100 <5 <5 430 <10 <5 2 8 22 5 0 11/07/2011 242714 H8 WALL H 8 2N 5 3200 8.2 19 <10 30 160 120 <10 <10 <10 <10 <10 <100 <100 2100 2100 <100 5100 1700 420 <10 2500 16 470 40 57 0 15/09/2010 211994 H14 Trial BV H 14 2S 3.5 2200 8.1 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 1200 <100 <100 <10 <10 65 <20 87 <10 1100 <10 6 0 01/08/2011 244972 H12 BV L H 12 2S 6 2400 8 19 <100 <100 <100 100 <100 <10 950 <10 <10 20 <10 <10 <10 <10 <25 <25 <25 <50 490 <5 31 <25 <5 0 01/08/2011 244972 H12 BV U H 12 2S 5 2000 8 21 <100 <100 <100 300 <100 <10 <10 30 <10 <10 <10 <10 <10 <10 <25 <25 43 <50 74 <5 550 <25 <5 0 30/08/2011 248118 H7 BV H 7 2N 4.5 2800 8.4 14 <10 <10 40 <10 <10 <10 <10 <10 20 <100 <100 3100 6200 <100 <25 370 <25 <50 <25 78 <25 <25 <5 0 01/08/2011 244972 H12 SVE H 12 2S 6 2600 7.9 15 <100 <100 <100 <100 <100 <10 170 40 <20 40 <10 <10 <10 <10 <25 <25 <25 <50 37 <5 <25 <25 <5 0 01/08/2011 244975 H10 BV H 10 2S 5 2400 8.9 20 <10 70 50 <10 20 <10 <10 160 10 <100 <100 200 400 <100 <25 <25 <25 <50 170 <5 <25 <25 <5 0 01/08/2011 244975 H11 BV H 11 2S 6 2300 7.7 16 <10 70 10 <10 <10 <10 <10 <10 <10 <100 <100 <100 100 <100 <25 <25 <25 <50 420 <5 <25 <25 <5 0 14/06/2011 239880 H16 BV H 16 2S 4 2800 8.7 19 <10 <10 420 910 <10 <10 <10 <10 170 <100 <100 2100 <100 <100 <5 <5 110 <10 <5 1 6 <5 12 0 02/11/2011 255404 H18 3.5M H 18 2S 1.5 <10 8.4 23 <10 <10 <10 <10 <10 30 20 20 130 <100 <100 <100 <100 <100 <5 <5 55 <10 <5 <1 19 <5 4 0 30/06/2011 241798 H8 2N BV H 8 2N 5 3800 8 <10 200 <10 <10 60 20 <10 480 50 100 <100 190 6900 <100 16 460 <5 <10 5200 <1 30 <5 16 0 30/06/2011 241798 H9 2N BV H 9 2N 5 3600 8.2 <10 <10 30 <10 <10 10 <10 1500 <10 <100 <100 150 <100 <100 <5 45 <5 <10 280 <1 43 <5 <1 0 06/06/2011 238884 H14 SV Trench H 14 2S 3.5 2600 7.7 19 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 35 <10 <5 2 44 <5 <1 0 14/06/2011 239880 H15 BV H 15 2S 4 2500 8.3 14 <10 <10 1600 1300 <10 <10 <10 40 50 <100 <100 4000 <100 <100 <5 <5 710 <10 <5 3 46 <5 65 0 29/10/2010 216821 H17 H 17 2S 2.5 2400 8.9 4.9 <10 <10 <10 <10 <10 <10 <10 <10 70 <100 <100 <100 <100 <100 <5 <5 62 <10 <5 2 58 <5 7 0 06/06/2011 238884 H14 SV2 Trench H 14 2S 3.5 2700 7.8 19 <10 <10 <10 <10 <10 <10 <10 50 <10 <100 <100 <100 <100 <100 <5 <5 18 <10 <5 3 94 <5 16 0 15/09/2010 211994 H14 H 14 2S 3.5 2300 8.1 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 9 3 96 <5 1 0 03/08/2011 245228 H7 BV H 7 1 4 3100 8 22 <10 <10 110 70 <10 <10 10 200 30 <100 <100 12000 2400 <100 <5 370 95 <10 3000 22 210 <5 160 8000 0 09/02/2011 226719 H6 CS H 6 1 3 2500 9.1 18 <10 120 40 210 <10 <10 <10 <10 <10 <100 <100 <100 340 <100 55 <5 <5 <10 <5 41 <5 <5 16 0 25/10/2011 254129 H20 2.1M H 20 2S 2 1900 8.2 13 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 10 <1 <5 <5 <1 0 02/11/2011 255404 H19 3.5M H 19 2S 3.5 <10 8.2 20 <10 <10 <10 <10 <10 <10 <10 <10 10 <100 <100 <100 <100 <100 <5 <5 <5 <10 34 <1 <5 <5 <1 0 21/04/2010 196655 H15 BV H 15 2S 3.5 2200 7.9 <10 <10 <10 <100 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 13/06/2011 239402 H17 H 17 2S 2.5 2200 8.6 15 <10 30 <10 <10 <10 20 30 40 80 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 07/10/2011 252167 H21 3.5M H 21 3 1.5 2000 8.2 22 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 28/09/2011 250856 H22 3.0M H 22 3 1 2100 8.4 14 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 07/10/2011 252163 H23 2.5M H 23 3 3.5 2000 8.3 18 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 16/11/2011 257084 H24 (CS) H 24 3 2.5 2100 7.3 12 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <2000 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 01/08/2011 244972 H12 SVS H 12 2S 6 2000 7.8 20 <100 <100 13,000 700 1800 <10 <10 50 <10 <10 60 <10 11000 <10 <50 <50 240 <100 <50 <10 470 <50 <10 0 01/08/2011 244972 H12 SVW H 12 2S 6 2100 8.1 19 <100 <100 <100 500 <100 <10 <10 <10 <10 <10 <10 <10 <10 <10 <50 <50 340 <100 290 <10 720 <50 <10 0 28/07/2010 206893 H10 Trial H 10 2S 4 3400 8.2 <10 40 40 <10 <10 70 <10 6900 <10 <100 <100 270 44000 <100 <50 2100 <50 <100 3900 130 <50 <50 <10 0 17/11/2011 257086 H15 3.54M H 15 2S 3.5 22 50 0 17/11/2011 257086 H16 3.57M H 16 2S 4 22 20 0 14/09/2011 249465 I13 BV I 13 2S 3.5 2500 8.8 15 <10 1200 <10 <10 40 20 <10 500 <10 390 <100 220 <100 <100 <5 <5 55 <10 90 3 160 <5 23 280 0 27/04/2011 235158 I9 BV I 9 2N 6 3400 8.3 19 <10 170 <10 <10 <10 <10 <10 13000 <10 <100 <100 1300 150000 <100 570 17000 8 <10 16000 1100 760 5 39 260 8750 240 2400 0 15/07/2011 243421 I11 SVS I 11 2N 6.5 2000 8.3 18 <10 <10 <10 <10 <10 <10 <10 180 <10 <100 <100 300 10000 <100 16 77 <5 <10 8 25 <5 3 2000 3000 0 15/07/2011 243421 I11 SVE I 11 2N 6.5 2300 8.3 17 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 10000 <100 <5 <5 <5 <10 6100 9 79 <5 <1 3900 4500 0 15/07/2011 243421 I11 BV I 11 2N 6.5 2000 8.5 18 <10 290 <10 <10 <10 <10 <10 240 <10 <100 <100 200 48000 <100 11 87 <5 <10 240 93 <5 12 8400 19000 0 16/06/2011 240124 I17 I 17 2S 1 2400 8.2 19 <10 90 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 6 <1 0 28/07/2010 206893 I10 Trial I 10 2N 6 5400 8.1 <10 20 <10 <10 <10 160 70 16000 70 <100 <100 360 40000 <100 <25 5500 <25 <50 990 160 140 <25 <5 0 11/05/2011 236127 I9 I 9 2N 6 2200 8.7 19 <100 5100 <100 <100 <100 <100 <100 1100 <100 <1000 <1000 11000 1100000 <1000 1300 37000 <25 <50 91000 590 250 <25 21 0 01/08/2011 244975 I10 BV I 10 2N 6 2300 8.3 18 <10 120 <10 <10 20 <10 <10 <10 <10 <100 <100 <100 <100 <100 <25 <25 <25 <50 2500 8 <25 <25 <5 0 08/09/2010 211302 I15 Trial BV I 15 2S 3.5 2200 8.1 <10 <10 <10 <10 <10 <10 <10 70 80 <100 <100 <100 <100 <100 <5 <5 <5 <10 640 5 5 <5 2 0 15/07/2011 243421 I12 SVS I 12 2S 4.5 250 8.4 19 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 400 7 6 <5 <1 0 01/08/2011 244975 I11 BV I 11 2S 5.5 2000 7.6 17 <10 30 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 110 <1 8 <5 <1 0 15/07/2011 243421 I10 SVE I 10 2N 5 2700 8.1 16 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 100 <100 <5 <5 <5 <10 460 9 10 <5 <1 0 30/06/2011 241798 I8 B BV I 8 2N 5 4300 8.1 <10 150 <10 <10 10 10 <10 <10 <10 <100 <100 <100 <100 <100 <5 10 <5 <10 500 <1 11 <5 <1 0 02/06/2011 238165 I14 BV I 14 2S 3.5 2400 7.6 21 <10 <10 <10 <10 <10 <10 30 <10 610 <100 <100 <100 <100 <100 <5 <5 110 <10 16 3 16 <5 <1 0 05/07/2010 204070 I8 BV I 8 2N 5 2100 8.3 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 32 <5 <10 320 24 17 <5 <1 0 01/08/2011 244975 I12 SVE I 12 2S 4.5 2500 7.7 14 <10 170 80 <10 40 <10 <10 <10 <10 <100 <100 <100 <100 <100 10 <5 8 <10 41 2 20 <5 <1 0 26/09/2011 250862 I16 BV (CS) I 16 2S 3 2300 8.2 18 <10 <10 <10 <10 <10 <10 46 <10 1200 <100 <100 140 <100 <100 <5 <5 59 <10 6 1 23 <5 5 0 15/07/2011 243421 I12 SVE I 12 2S 4.5 2100 8.4 19 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 400 8600 <100 <5 <5 <5 <10 15 23 <5 <1 0 13/05/2011 236575 I9 trial sample in gault I 9 2N 6 4600 8.3 24 <10 <10 <10 <10 <10 180 30 21000 100 <100 <100 600 32000 <100 12 11000 <5 <10 4600 170 46 <5 4 0 18/03/2011 230930 I6 Zone 2N BV I 6 2N 3.5 2500 8.4 18 <10 <10 <10 <10 <10 20 20 30 50 <100 <100 <100 260 <100 <5 110 10 <10 10 19 120 <5 <1 0 26/09/2011 250862 I15 BV I 15 2S 3.5 2200 8.3 19 <10 <10 <10 <10 <10 <10 44 <10 1300 <100 <100 110 <100 <100 26 <5 15 <10 5 2 <5 <5 66 0 18/04/2011 233858 I8 Zone 2N BV I 8 2N 6 2700 8.1 22 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 3 <5 <5 2 0 31/08/2011 248120 I6 BV I 6 2N 3.5 2800 8.4 16 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 500 <100 <5 110 <5 <10 <5 88 <5 <5 <1 0 18/11/2010 218834 TPI6 I 6 1 3.5 2200 8.2 24 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 120 <5 <5 7 0 28/10/2011 254858 I19 1.1M (CS) I 19 3 1 2100 8.4 19 <10 <10 <10 <10 <10 <10 <10 20 10 <100 <100 <100 <100 <100 <5 <5 <5 <10 10 <1 <5 <5 <1 0 24/06/2011 240637 I10 SV I 10 2N 6 2600 7.6 7.5 <10 <10 <10 <10 <10 <10 <10 410 30 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 26/09/2011 250862 I15 SVE I 15 2S 3.5 2200 8.4 13 <10 440 <10 20 <10 84 41 <10 490 <100 <100 850 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 1 0

Validation reports colour devided revised SV BV TP worksheet E_MAJORITY_HVW TM/Revised SV, BV, TP validations 1/3 Phenoxy Phenoxy Sum of Indane, 1-ethyl- Acetic Acetic 1-(2- 3-methylbenzene, 1- acid Phenoxy acid 2-Methyl- Chloroeth Mixed Meta/Par ethyl-3-methylbenzene, herbicide: Acetic acid herbicide: 2,4,6- 4,6- 4-Chloro-2- Bis (2- 1,2- 1,2- Cis-1,2- Vinyl oxy)-2-(o- Trichloro 1- Trichloro(chl Trichloro isomers of a TPH C8-14, 1-ethyl-3- Electrical Ethofumesa Dichlorpr herbicide: Mecopro Trichlorophe dinitrophe methylphen chloroethyl) Dichlorobe Dichloroeth Dichloroeth Cyclohex Tetrachloro Trichloroeth chloride Tolyloxy)- Dichloromethyl benzenea Trichlorometh Dichloromethy Methylnap Dichlorotolue Trichlorobenz oromethyl)b nitrobenz DDD DDE Ethyltolue TPH (C8- methylbenzene, 1-ethyl- Report Column Conductivity pH Moisture Dimefox te Hempa Schradan Simazine Dicamba op MCPA p nol nol ol ether Phenol nzene ane ylene anone ethylene Toluene ylene monomer Xylene (Total) ethane phenol mine ylbenzene lbenzene thalene ne ene enzene ene and DDT ne C14) Copper Lead Manganese Nickel Zinc 2-methylphenol 4-methylbenzene Report Date Number BV Reference Row Column Letters Zone Depth µS/CM % µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg 26/09/2011 250862 I16 SVE I 16 2S 3 2200 8.3 18 <10 70 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 02/11/2011 255408 I18 3.7M I 18 2S 1 <10 8.2 18 <10 <10 <10 <10 <10 <10 <10 <10 20 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 07/10/2011 252139 I20 3.5M I 20 3 1.5 2000 8.3 20 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 11/10/2011 252525 I21 3.9 I 21 3 1 2300 8.2 20 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 11/10/2011 252525 I22 3.1 I 22 3 1.5 2200 8.2 18 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 27/09/2011 251176 I23 2.6M I 23 3 4.5 2000 8.3 20 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 16/11/2011 257084 I24 (CS) I 24 3 2.5 2100 7.6 11 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 11/07/2011 242714 I6 WALL I 6 2N 3.5 2600 8.3 17 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 31/03/2011 232310 I6 Zone 1 BV I 6 1 3.5 2200 8.2 22 <10 10 <10 <10 30 20 <10 70 20 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 31/03/2011 232310 I7 Zone 1 BV I 7 1 5.5 2000 7.7 22 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 31/03/2011 232310 I7 Zone 2N BV I 7 2N 6 2100 8.3 22 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 26/09/2011 250862 I16 SVS I 16 2S 3 2100 8.4 15 <10 330 <10 <10 <10 <10 <10 <10 69 <100 <100 180 <100 <100 8 <5 <5 <10 <5 <1 <5 <5 <1 0 15/08/2011 246538 I12 BV I 12 2S 5 2200 8.5 21 <10 10 <10 10 <10 50 <10 6400 20 <100 <100 8200 2600 <100 <50 <50 <50 <100 <50 <50 160 <50 <10 0 24/06/2011 240637 I9 BV I 9 2N 6 0 24/06/2011 240637 J10 SV J 10 2N 6.5 3400 7.5 12 <10 2000 <10 <10 30 20 <10 800 120 300 <100 300 <100 <100 <5 <5 <5 <10 51 3 <5 <5 1 400 800 900 6800 700 0 24/06/2011 240637 J10 BV J 10 2N 6.5 900 0 07/07/2011 242275 J11 SV E J 11 2S 6.5 4200 7.4 21 <10 <10 <10 <10 <10 60 <10 3100 <10 <100 <100 210 110000 <100 <5 77 48 <10 7600 2 750 41 <1 4710 120 0 07/07/2011 242275 J11 BV J 11 2S 6.5 2300 7.5 21 <10 10 <10 <10 <10 <10 <10 1100 130 <100 <100 <100 530 <100 <5 <5 <5 <10 100 <1 5 <5 <1 170 0 27/04/2011 235158 J10 BV J 10 2N 6.5 3200 8.4 19 <10 280 <10 <10 <10 20 <10 1500 140 <100 <100 820 330 <100 6 1300 9 <10 2600 300 82 <5 5 160 440 880 0 24/05/2010 199763 J7 BV J 7 2N 5 2200 8.1 <10 <10 <10 <100 <10 <10 <10 <10 <10 <100 <100 <100 620 <100 <5 220 37 <10 110 250 36 7 13 0 24/08/2010 209399 J13 TP2 J 13 2S 4.5 2500 8.1 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 200 <100 11 <10 <10 <20 <10 2400 44 <10 14 0 24/05/2010 199763 J8 J 8 2N 6 2100 8.6 <10 330 <10 <100 <10 <10 <10 <10 <10 220 <100 <100 <100 <100 28 870 47 <50 420 2100 50 <25 47 0 12/08/2010 208691 J13 Trial BV Sample J 13 2S 4.5 4200 8.3 <10 <10 <10 <10 <10 <10 170 <10 0.1 <100 <100 20000 11000 <100 <5 <5 <5 <10 6 <1 5 <5 2 0 07/07/2011 242275 J12 BV J 12 2S 5.5 4700 7.5 20 <10 <10 <10 <10 <10 40 <10 <10 <10 <100 <100 <100 200 <100 <5 <5 <5 <10 56 16 7 <5 <1 0 13/05/2011 236575 J9 trail sample in gault J 9 2N 6 2100 8.8 20 <10 230 <10 <10 <10 <10 <10 470 <10 400 <100 100 180000 <100 6 34 <5 <10 11000 370 15 <5 29 0 24/08/2010 209399 J12 TP1 J 12 2S 5,5 3000 8.1 <10 <10 30 <10 <10 40 110 6800 600 <100 <100 7000 2000 <100 <5 <5 <5 <10 140 51 25 <5 20 0 18/04/2011 233858 J7 Zone 2N BV J 7 2N 6 2600 8.1 23 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 3 26 <5 2 0 27/04/2011 234979 J8 2 BV J 8 2N 6 2600 8.2 20 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 43 4 28 <5 <1 0 27/04/2011 235158 J9 BV J 9 2N 6 3200 8.5 18 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 1800 <100 <5 2400 <5 <10 990 54 79 <5 <1 0 11/05/2011 236127 J10 J 10 2N 6 2200 7.9 21 <100 27000 <100 <100 <100 <100 200 <100 200 <1000 <1000 <1000 4000 <1000 <5 200 <5 <10 1200 24 97 <5 3 0 31/03/2011 232310 J7 Zone 2N BV J 7 2N 5 1900 8.2 22 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 26 <10 <5 <1 140 <5 <1 0 08/07/2011 242852 J13 SV E J 13 2S 4 3800 8 20 <10 <10 <10 <10 <10 20 <10 <10 <10 <100 <100 <100 2200 <100 <5 <5 <5 <10 10 1 <5 <5 <1 0 26/08/2010 210115 J14 Trial BV J 14 2S 3.5 2300 7.1 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 160 <100 <5 <5 <5 <10 <5 1 <5 <5 <1 0 18/04/2011 233858 J7 Drainage Trench SV J 7 2N 5.5 2700 8.5 22 <10 <10 <10 <10 <10 <10 <10 <10 40 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 1 <5 <5 <1 0 18/04/2011 233858 J8 Zone 2N BV J 8 2N 6 2800 8.2 22 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 1 <5 <5 <1 0 08/07/2011 242852 J13 BV J 13 2S 4 2800 8.2 19 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 13 2 <5 <5 <5 0 14/04/2010 195983 BV J16 J 16 2S 1.5 3100 8.7 <100000 <100000 <100000 <100000 150 20 <10 <10 910 <100 <100 2600 2900 <100 <5 <5 <5 <10 <5 2 <5 <5 36 0 18/04/2011 233858 J7 Drainage Trench BV2 J 7 2N 5.5 2700 8.6 23 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 2 <5 <5 <1 0 26/08/2010 210115 TP J14 J 14 2S 3.5 2200 7.3 <10 <10 <10 <10 <10 <10 <10 280 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 4 <5 <5 3 0 14/07/2010 205640 J8 BV J 8 2N 6 2200 8 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 12 <5 <5 <1 0 31/08/2011 248120 J6 BV J 6 2N 4 2600 8.5 16 <10 20 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 100 <5 <10 <5 56 <5 <5 <1 0 24/08/2010 209399 J13 TP1 J 13 2S 4 2500 8.1 <10 <10 <10 <10 <10 <10 <10 <10 30 <100 <100 <100 <100 <100 <5 <5 <5 <10 7 <1 <5 <5 1 0 02/11/2011 255406 J20 4.0M (CS) J 20 3 4 <10 8.2 21 <10 <10 <10 <10 <10 20 40 1900 110 <100 <100 <100 <100 <100 <5 <5 <5 <10 10 <1 <5 <5 <1 0 07/07/2011 242275 J12 SV S J 12 2S 5 5000 7.6 17 <10 <10 <10 <10 <10 240 <10 <10 20 <100 <100 100 6300 <100 <5 <5 <5 <10 14 <1 <5 <5 <1 0 02/06/2011 238165 J14 BV J 14 2S 3.5 2400 7.6 23 <10 <10 <10 <10 <10 10 <10 <10 250 <100 <100 <100 <100 <100 <5 <5 27 <10 16 <1 <5 <5 <1 0 07/07/2011 242275 J12 SV E J 12 2S 6 3700 7.5 20 <10 1800 2,000 5700 210 50 <10 <10 <10 <100 <100 <100 1600 <100 <5 <5 <5 <10 30 <1 <5 <5 <1 0 07/07/2011 242275 J12 SV W J 12 2S 6 7600 7.7 21 <10 24000 <10 <10 3300 170 <10 73000 150 <100 <100 1400 27000 280 <5 <5 <5 <10 36 <1 <5 <5 <1 0 08/07/2011 242852 J13 SV S J 13 2S 4 5000 7.8 20 <10 <10 <10 <10 <10 140 <10 580 40 <100 <100 1500 5300 <100 <5 <5 <5 <10 130 <1 <5 <5 <1 0 08/07/2011 242852 J13 SV W J 13 2S 4 3700 8 19 <10 <10 <10 <10 <10 20 <10 <10 <10 <100 <100 20000 6800 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 28/10/2011 254852 J17 1.5M J 17 2S 1.5 2100 8.6 19 <10 110 70 350 <10 <10 <10 <10 40 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 28/10/2011 254852 J17 2.5M (CS) J 17 2S 2.5 2100 8.4 25 <10 110 <10 <10 <10 <10 <10 <10 10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 02/11/2011 255408 J18 2.8M J 18 3 2.5 <10 8.3 16 <10 <10 <10 <10 <10 <10 <10 <10 10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 02/11/2011 255406 J19 1.9M J 19 3 1.5 <10 8.2 16 <10 <10 <10 <10 <10 <10 10 <10 60 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 02/11/2011 255406 J19 3.8M (CS) J 19 3 3.8 <10 8.2 21 <10 <10 <10 <10 <10 <10 <10 <10 10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 02/11/2011 255406 J20 2.8M J 20 3 2.8 <10 8.2 17 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 28/10/2011 254858 J21 2.6M J 21 3 2.6 2100 8.1 22 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 17/10/2011 252988 J22 2.5M J 22 3 2.5 2200 9.6 18 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 17/10/2011 252988 J23 2.5M J 23 3 2.5 2200 9.1 18 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 16/11/2011 257084 J24 (CS) J 24 3 0.5 2100 7.4 7.5 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 11/07/2011 242714 J6 WALL J 6 1 3 2400 8.4 17 <10 10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 31/03/2011 232310 J6 Zone 1 BV J 6 1 3 2100 8.3 22 <10 <10 <10 <10 10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 18/03/2011 230930 J6 Zone 2N BV J 6 2N 3.5 2100 8.1 17 <10 <10 <10 <10 <10 <10 <10 <10 20 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 18/04/2011 233858 J7 Drainage Trench BV J 7 2N 5.5 2700 8.7 22 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 18/04/2011 233858 J7 Drainage Trench SV2 J 7 2N 5.5 2600 8.5 22 <10 <10 <10 <10 <10 <10 <10 <10 50 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 23/06/2010 203335 J7 VS J 7 2N 6 2300 8.5 <10 <10 <10 <100 <10 <10 <10 <10 <10 <100 <100 110 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 14/07/2010 205640 J7 BV J 7 2N 6 <10 <10 <10 <10 <10 0 08/07/2011 242852 K11BV K 11 2N 6 2700 8.3 20 <10 <10 <10 <10 <10 <10 10 1700 240 <100 <100 100 44000 <100 <5 5 6 <10 1000 1 48 6 <1 1100 0 11/05/2011 236127 K10 K 10 2N 6 2300 8.8 20 <100 27000 <100 <100 <100 <100 100 600 <100 <1000 <1000 <1000 550000 <1000 79 490 <25 <50 34000 1400 35 <25 130 0 08/09/2011 248818 K5 BV 2.8M K 5 1 2.8 2500 8.3 26 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 1600 2600 <100 <25 <25 <25 <50 54 <25 41 <25 <5 0 13/05/2010 198957 K7 BV2 K 7 2N 4.5 2300 8.4 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 3600 2600 <100 <25 58 29 <50 190 420 <25 <25 <25 0 07/07/2011 242275 K12 K 12 2S 4.5 5200 7.8 20 <10 <10 <10 <10 <10 70 <10 46000 120 <100 <100 25000 15000 260 <5 <5 <5 <10 9 <1 5 <5 <1 100 0 18/04/2011 233858 K8 Zone 2N BV K 8 2N 6.5 3200 8 24 <10 <10 <10 <10 <10 <10 <10 <10 80 <100 <100 <100 100 <100 7 <5 <5 <10 18 1 6 <5 <1 0 14/05/2010 199157 K7 TBV K 7 2N 4.5 2100 8.4 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 50 14 9 <5 <1 0 13/06/2011 239401 K15 Pile Base K 15 2S 5.5 2500 10.1 22 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 600 <100 <5 <5 <5 <10 46 1 11 <5 <1 0 13/05/2011 236575 K9 trial sample in gault K 9 2N 6 2100 8.3 20 <10 1500 <10 <10 <10 <10 <10 920 <10 600 <100 400 230000 <100 <5 85 <5 <10 14000 300 11 <5 12 0 12/04/2010 195725 K16 K 16 3 5.5 2300 8.4 <10 120 <10 <10 <10 <50 <50 <50 <50 <100 <100 <100 2100 <100 <5 <5 <5 <10 74 <1 14 <5 <1 0 14/05/2010 199157 K7 SV1 K 7 2N 4.5 2600 8.3 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 5500 <100 <5 <5 <5 <10 79 6 15 <5 <1 0 14/05/2010 199157 K7 SV2 K 7 2N 4.5 2300 8.1 <10 30 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 140 <100 <5 <5 <5 <10 86 23 17 <5 <1 0 12/08/2010 208691 K13 Trial BV Sample K 13 2S 4 3100 8.7 <10 <10 <10 <10 <10 <10 40 <10 <0.01 490 <100 9200 1400 <100 <5 <5 41 <10 81 31 17 <5 10 0 01/11/2011 255202 K17 2.5M K 17 3 2.5 2200 8.3 16 <10 <10 <10 <10 <10 <10 <10 <10 10 <100 <100 <100 <100 <100 <5 <5 <5 <10 85 <1 23 <5 <1 0 27/04/2011 234979 K8 2 BV K 8 2N 6 2900 8.2 19 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 42 3 35 <5 <1 0 27/04/2011 235158 K10 BV K 10 2N 6.5 2700 9.4 21 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 770 <100 <5 780 <5 <10 1500 71 61 <5 <1 0 27/04/2011 234979 K7 FACE VALIDATION K 7 2N 4.5 3400 8.6 20 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 420 <100 <5 <5 <5 <10 20 3 67 <5 <1 0 14/05/2010 199157 K8 TBV K 8 2N 6 2200 8.5 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 380 <100 <5 10 7 <10 670 32 76 <5 1 0 13/06/2011 239401 K14 Pile Base K 14 2S 5 2400 9.7 23 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 22 1 <5 <5 <1 0 08/07/2011 242852 K12 SV SW K 12 2S 5 3000 8.3 21 <10 <10 <10 <10 <10 <10 <10 390 40 <100 <100 <100 200 <100 <5 <5 <5 <10 23 1 <5 <5 <1 0 18/04/2011 233858 K7 Zone 2N BV K 7 2N 4.5 2700 8.2 26 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 230 1 <5 <5 <1 0 12/04/2010 195725 K15 K 15 2S 6 2500 9 <10 <10 <10 <10 <10 <50 <50 <50 110 <100 <100 <100 2000 <100 <5 <5 <5 <10 <5 2 <5 <5 33 0 08/11/2011 256023 K15 BV K 15 2S 6 2400 8.9 23 <10 <10 <10 <10 <10 <10 <10 30 70 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 3 <5 <5 <1 0 14/05/2010 199157 K8 SV1 K 8 2N 6 2500 8.3 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 1300 <100 <5 <5 <5 <10 23 4 <5 <5 <1 0 28/06/2010 203772 K7 BV A K 7 2N 4.5 2100 8.7 <10 <10 <10 <100 <10 <100 <100 700 200 <100 <100 <100 <100 <100 <5 <5 <5 <10 130 4 <5 <5 <1 0 28/06/2010 203772 K8 VS K 8 2N 6 2100 8.4 <10 <10 <10 <100 <10 <100 <100 1900 600 <100 <100 <100 <1000 <1000 <5 <5 <5 <10 150 4 <5 <5 <1 0 28/06/2010 203772 K7 SV A K 7 2N 4.5 2100 8.5 <10 <10 <10 <100 <10 <100 <100 200 <100 <100 <100 <100 <1000 <1000 <5 <5 <5 <10 180 4 <5 <5 <1 0 31/03/2011 232316 K5 SV A (Trial) K 5 1 1 2300 8.2 18 <10 90 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <5 <5 <5 <10 <5 5 <5 <5 <1 0 28/06/2010 203772 K7 SV B K 7 2N 4.5 2100 8.1 <10 <10 <10 <100 <10 <100 <100 <100 <100 <100 <100 <100 <1000 <1000 <5 <5 <5 <10 170 6 <5 <5 <1 0 05/04/2011 232770 K6 Zone 1 BV K 6 1 3.5 2500 7.6 21 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 150 9 <10 <5 6 <5 <5 <1 0 31/08/2011 248120 K5 BV K 5 2N 1 2900 8.7 24 <10 20 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 75 <5 <10 <5 17 <5 <5 <1 0 24/11/2010 219619 TPK6 K 6 1 3.5 2300 8.1 22 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 100 <5 <5 3 0 01/11/2011 255206 K20 1.5M K 20 3 1.5 2200 9.8 6.1 <10 110 <10 <10 <10 <10 <10 10 20 <100 <100 <100 <100 <100 <5 <5 <5 <10 7 <1 <5 <5 <1 0 24/06/2011 240637 K11 SV K 11 2N 6 2400 7.9 10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 9 <1 <5 <5 <1 0 01/11/2011 255206 K19 2.5M K 19 3 2.5 2200 8.3 19 <10 <10 <10 <10 <10 10 <10 <10 10 <100 <100 <100 <100 <100 <5 <5 <5 <10 9 <1 <5 <5 <1 0 20/05/2011 237414 K6 BV Drain Box K 6 1 3.5 2600 7.8 16 <10 1100 <10 <10 1,700 <50 <50 <50 <50 <100 <100 <100 2500 <100 <5 <5 <5 <10 13 <1 <5 <5 <1 0 08/07/2011 242852 K12 BV K 12 2S 4 8200 8.1 18 <10 <10 <10 <10 <10 <10 <10 33000 70 <100 <100 5400 48000 <100 <5 <5 <5 <10 29 <1 <5 <5 <1 0 24/06/2011 240637 K9 BV K 9 2N 6 3100 7.4 13 <10 70 <10 <10 30 <10 <10 80 30 <100 <100 <100 <100 <100 21 <5 <5 <10 51 <1 <5 <5 <1 0 01/11/2011 255202 K18 2.0M K 18 3 2 2200 8.1 19 <10 <10 <10 <10 <10 <10 <10 <10 10 <100 <100 <100 <100 <100 <5 <5 <5 <10 70 <1 <5 <5 <1 0 31/03/2011 232316 K5 SV B (Trial) K 5 1 1 2100 8.5 21 <10 90 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <5 <5 5 <10 <5 <1 <5 <5 <1 0 05/04/2011 232770 K6 Zone 1 ZN BV K 6 1 3.5 2500 7.9 21 <10 <10 <10 <10 <10 <10 20 20 130 <100 <100 <100 <100 <100 <5 10 <5 <10 <5 <1 <5 <5 <1 0 11/07/2011 242412 K13 5.4M K 13 2S 4 3900 7.9 21 <10 <10 <10 <10 <10 <10 <10 <10 60 <100 <100 1100 8200 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 21/04/2010 196655 K14 BV K 14 2S 4.5 2100 8.2 <10 <10 <10 <100 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 19/04/2010 196515 K16 BV 6 K 16 3 1 2700 6.5 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 01/11/2011 255206 K20 2.5M (CS) K 20 3 2.5 2200 8.1 21 <10 <10 <10 <10 <10 <10 <10 <10 10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 28/10/2011 254855 K21 3.1M K 21 3 3.1 2100 8.2 20 <10 <10 <10 <10 <10 <10 <10 <10 10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 27/09/2011 250882 K22 2.7M K 22 3 2.7 2100 8.2 19 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 17/10/2011 252988 K23 2.5M K 23 3 2.5 2200 10.6 17 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 16/11/2011 257084 K24 (CS) K 24 3 0.5 2100 7.9 13 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 11/07/2011 242714 K5 WALL K 5 1 1 2300 8.2 17 <10 40 <10 <10 <10 <10 <10 30 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 14/05/2010 199157 K8 SV2 K 8 2N 5.5 2400 8.2 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 5400 <100 <50 <50 <50 <100 4700 50 110 <50 <10 0 30/11/2011 258839 K8 BV 2.4M K 8 2N 5.5 3300 8.3 18 <10 10 <10 <10 <10 50 50 3200 1300 250 <100 7200 10000 130 <50 <50 1500 <100 580 980 150 <50 35 0 24/06/2011 240637 K10 BV K 10 2N 6.5 0 08/07/2010 205069 K7 SV A K 7 2N 4.5 <10 <10 <10 <10 <10 0 08/07/2010 205069 K7 SV B K 7 2N 4,5 <10 <10 <10 <10 <10 0 08/07/2010 205069 K7 BV A K 7 2N 4,5 <10 <10 <10 <10 <10 0 08/07/2010 205069 K8 VS K 8 2N 6 <10 <10 <10 <10 <10 0 06/06/2011 238884 L7 Marl SW L 7 2N 4 3100 8.2 24 <10 20 <10 <10 <10 <10 10 <10 180 <100 <100 <100 5800 <100 <5 23 180 <10 8 35 <5 7 40 0 06/07/2011 242153 L9 SV W L 9 2N 6 4500 9.1 19 <10 <10 <10 <10 <10 170 50 230 2300 <100 <100 <100 6800 <100 <5 15 950 <10 22 10 10 62 10 0 13/05/2010 198957 L7 BV L 7 2N 4 2600 8.3 <10 <10 <10 <10 <10 <10 20 3100 100 <100 <100 5100 14000 <100 <25 480 28 <50 8000 2200 330 <25 2000 0 08/09/2011 248818 L5 BV 2.8M L 5 1 2.8 2500 8.3 25 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 200 500 <100 <25 <25 <25 <50 <25 57 <25 <25 <5 0 06/12/2011 259541 L6 3.0 L 6 2N 3 2600 8.5 26 <10 <10 <10 <10 <10 10 30 10 130 <100 <100 200 2900 <100 <25 <25 <25 <50 <25 <25 <25 <25 60 0 06/12/2011 259478 L5 ZONE 2 4.0M L 5 2N 2.4 2800 8.1 21 <10 <10 <10 <10 <10 <10 <10 <10 30 <100 <100 440 2600 <100 <25 <25 <25 <50 <25 <5 <25 <25 <5 0 30/11/2011 258839 L8 SVW 2.2M L 8 2N 2.2 3000 7.8 21 <10 <10 <10 <10 <10 <10 10 170 150 <100 <100 <100 8800 <100 <25 <25 <25 <50 <25 <5 <25 <25 <5 0 21/07/2010 206314 L8 BV L 8 2N 6 2300 8.2 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 19 20 7 <5 1 0 07/11/2011 255889 L15 SVW L 15 3 0.5 2300 8 21 <10 <10 <10 <10 <10 <10 <10 180 30 <100 <100 <100 910 <100 <5 <5 9 <10 26 15 9 <5 <1 0 28/10/2011 254891 L5 BV L 5 1 0.5 2100 8.3 20 <10 <10 <10 <10 <10 <10 <10 20 10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 12 <5 <1 0 28/06/2010 203772 L7 SV B L 7 2N 5.5 2100 8.6 <10 <10 <10 <100 <10 <100 <100 600 <100 <100 <100 <100 <100 <100 <5 <5 <5 <10 890 8 27 <5 6 0 20/04/2011 234538 L8 TP L 8 2N 5 2800 8 22 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 1800 <100 <5 <5 <5 <10 1000 2 30 <5 5 0 13/05/2011 236129 L10 BV L 10 2N 6.5 2300 8.6 22 <10 <10 <10 <10 <10 <10 20 200 440 <100 <100 <100 <100 <100 <5 160 <5 <10 860 25 41 <5 2 0 13/05/2011 236575 L9 trail sample in gault L 9 2N 5 2000 8.3 21 <10 <10 <10 <10 <10 <10 <10 150 <10 <100 <100 <100 800 <100 7 100 <5 <10 21000 3200 65 <5 45 0 28/10/2011 254891 L5 SVN L 5 1 0.5 2100 11.7 84 <10 <10 90 60 <10 30 10 20 50 <100 <100 <100 160 <100 <5 <5 13 <10 <5 29 67 <5 <1 0 28/06/2010 203772 L7 L 7 2N 5.5 2300 8.9 <10 <10 <10 <100 <10 <100 <100 <100 <100 <100 <100 <100 <100 <100 <5 <5 <5 <10 2400 14 96 <5 6 0 06/07/2011 242153 L10 SV W L 10 2N 6.5 4100 7.5 23 <10 50 <10 <10 <10 <10 <10 430 50 <100 <100 2100 15000 <100 8 1500 21 <10 4100 62 180 <5 6 0 16/07/2010 205918 L11 BV L 11 2N 6.5 2200 8 <10 <10 <10 <10 <10 <10 <10 10 30 <100 <100 <0.1 <100 <100 <5 <5 <5 <10 6 1 <5 <5 <1 0 06/06/2011 237754 L8 Sidewall Validation L 8 2N 4.5 2300 7.9 <10 <10 <10 <10 <10 <10 <10 60 20 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 1 <5 <5 <1 0 06/06/2011 237754 L7 Sidewall Validation L 7 2N 5.5 3400 8 <10 <10 <10 <10 <10 <10 <10 10 570 <100 <100 <100 2400 <100 <5 <5 12 <10 7 2 <5 <5 <1 0 29/06/2011 241566 L10B BV L 10 2N 6.5 4300 7.5 23 <10 230 <10 <10 <10 10 <10 100 110 <100 <100 450 5200 <100 <5 <5 <5 <10 24 2 <5 <5 <1 0 06/06/2011 238884 L6 Marl SW L 6 2N 2.5 2900 7.8 23 <10 30 <10 <10 10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 47 2 <5 <5 <1 0 14/07/2010 205640 L10 Trial L 10 2N 6.5 2600 7.7 <10 <10 <10 <10 <10 <10 <10 100 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 2 <5 <5 <1 0 06/06/2011 238884 L8 Marl SW L 8 2N 5.5 2900 8.1 24 <10 <10 <10 <10 <10 30 50 950 1500 <100 <100 <100 <100 <100 <5 <5 <5 <10 8 3 <5 <5 <1 0 28/06/2010 203772 L7 BV A L 7 2N 5.5 2100 8.9 <10 <10 <10 <100 <10 <100 <100 400 <100 <100 <100 <100 <100 <100 <5 <5 <5 <10 130 3 <5 <5 <1 0 28/06/2010 203772 L7 SV C L 7 2N 5.5 2200 8.8 <10 <10 <10 <100 <10 <100 <100 <100 <100 <100 <100 <100 <100 <100 <5 <5 <5 <10 140 3 <5 <5 <1 0 24/11/2010 219458 L4 L 4 1 0.5 2300 8.4 20 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 3 <5 <5 <1 0 28/06/2010 203772 L7 SV A L 7 2N 5.5 2200 8.6 <10 <10 <10 <100 <10 <100 <100 100 <100 <100 <100 <100 <100 <100 <5 <5 <5 <10 150 4 <5 <5 <1 0 28/06/2010 203772 L7 SV D L 7 2N 5.5 2300 8.6 <10 170 <10 <100 <10 <100 <100 <100 <100 <100 <100 <100 <100 <100 <5 <5 <5 <10 210 4 <5 <5 2 0 13/05/2011 236129 L22 L 22 3 0.5 2100 8.2 20 <10 <10 <10 <10 <10 <10 <10 20 20 <100 <100 <100 <100 <100 <5 31 <5 <10 29 5 <5 <5 <1 0 23/11/2010 219461 L6 L 6 2N 2.5 2200 7.6 22 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 5 <5 <5 2 0 20/05/2011 237208 L8 trial sample in gault L 8 2N 5.5 2100 8.4 24 <10 <10 <10 <50 <10 <200 <200 <200 <200 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 7 <5 <5 1 0 07/11/2011 255889 L14 SVW L 14 2S 1.5 2300 8 21 <10 <10 <10 <10 <10 <10 <10 140 10 <100 <100 <100 280 <100 <5 <5 <5 <10 <5 9 <5 <5 <1 0 20/05/2011 237208 L7 trial sample in marl L 7 2N 3.5 2100 8.5 24 <10 <10 <10 <50 <10 <100 <100 <100 <100 <100 <100 <100 <100 <100 <5 <5 <5 <10 15 160 <5 <5 10 0 20/05/2011 237414 L7 BV 226 576 L 7 2N 3.5 2000 8.2 14 <10 <10 <10 <10 <10 <50 <50 <50 <50 <100 <100 <100 <100 <100 <5 <5 <5 <10 5 <1 <5 <5 <1 0 07/11/2011 255889 L15 2M L 15 3 1.5 2000 8.2 20 <10 <10 <10 <10 <10 <10 <10 680 30 <100 <100 <100 <100 <100 13 <5 <5 <10 5 <1 <5 <5 <1 0 02/06/2011 238165 L9 BV L 9 2N 5.5 2400 7.6 20 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 12 <1 <5 <5 <1 0 20/05/2011 237414 L8 BV 225 558 L 8 2N 4.5 2000 8.3 15 <10 <10 <10 <10 <10 <50 60 250 <50 <100 <100 <100 <100 <100 <5 <5 <5 <10 19 <1 <5 <5 <1 0 02/06/2011 238165 L8 BV L 8 2N 5.5 2400 7.5 22 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 26 <1 <5 <5 <1 0 08/11/2011 256029 L10 0.5 L 10 2N 6.5 2200 7.2 17 <10 <10 <10 <10 <10 <10 <10 30 60 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 28000 76000 380000 20000 88000 0 28/03/2011 231688 L12 L 12 2N 4 2400 7.6 23 <10 <10 <10 <10 <10 <10 <10 <10 230 <100 <100 <100 630 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 30/03/2011 232134 L14 L 14 2S 2 2900 8.5 17 <10 <10 <10 <10 <10 <10 <10 <10 5900 <100 <100 <100 3600 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 16/11/2011 257081 L17 (CS) L 17 3 0.5 2100 8 10 <10 <10 40 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 16/11/2011 257081 L18 (CS) L 18 3 0.5 2100 7.8 11 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 16/11/2011 257081 L19 (CS) L 19 3 0.5 2100 7.7 7.9 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 16/11/2011 257081 L20 (CS) L 20 3 0.5 2100 7.7 14 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 16/11/2011 257081 L21 (CS) L 21 3 0.5 2100 7.6 14 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 08/11/2010 217795 L5 L 5 1 3.5 2300 8.8 18 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 28/10/2011 254891 L5 SVW L 5 1 1 2100 9.1 18 <10 30 <10 <10 <10 <10 <10 <10 10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 06/12/2011 259483 L5 Z1 BV L 5 1 1 2300 8.8 15 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 200 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 06/12/2011 259483 L5 Z1 SVE L 5 1 1 2100 9.1 19 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 06/12/2011 259483 L5 Z1 SVN L 5 1 1 2200 8.8 21 <10 20 <10 10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 06/12/2011 259483 L5 Z1 SVW L 5 1 1 2200 8.8 19 <10 30 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 06/12/2011 259483 L5 Z2 SVN L 5 2N 1 2100 8.9 20 <10 20 <10 <10 <10 <10 <10 <10 20 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 13/06/2011 239578 L6 BV 4.0m L 6 2N 4 2500 7.5 19 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 300 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 31/03/2011 232316 L6 SV (Trial) L 6 2N 4 2200 8.5 17 <10 30 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 13/06/2011 239578 L7 BV 4.0m L 7 2N 4 2400 7.6 19 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 08/11/2011 256029 L9 0.5 L 9 2N 5.5 2100 7.9 14 <10 <10 <10 <10 <10 <10 <10 30 60 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 22000 77000 740000 19000 67000 0 30/11/2011 258839 L8 GAULT 3.8M L 8 2N 4 3200 8 22 <10 <10 <10 <10 <10 20 30 450 470 <100 <100 14000 16000 100 <50 <50 640 <100 820 8880 240 <50 33 0 11/07/2011 242412 L13 5.4M L 13 2N 3.5 22 0 08/07/2010 205069 L7 SV A L 7 2N 5.5 <10 <10 <10 <10 <10 0 08/07/2010 205069 L7 SV B L 7 2N 5.5 <10 <10 <10 <10 <10 0 08/07/2010 205069 L7 SV C L 7 2N 5.5 <10 <10 <10 <10 <10 0 08/07/2010 205069 L7 SV D L 7 2N 5 <10 <10 <10 <10 <10 0 08/07/2010 205069 L7 L 7 2N 5.5 <10 <10 <10 <10 <10 0 08/07/2010 205069 L7 BV A L 7 2N 5.5 <10 <10 <10 <10 <10 0 06/12/2011 259541 M8,L8,L7 0.5 L/M 7/8 2N 0.5 2500 8.1 7.6 <10 20 <10 <10 <10 <10 <10 <10 <10 <100 <100 110 600 <100 <5 <5 <5 <10 7 <1 <5 <5 <1 0 08/11/2010 217789 M8 M 8 2N 3.5 3300 8.1 21 <10 <10 <10 <10 <10 30 50 60 850 <100 <100 <100 39000 <100 <5 <5 37 <10 <5 20 <5 7 10 11000 0 06/12/2011 259469 M8 BV M 8 2N 3.5 4900 8.9 18 <10 <10 <10 <10 <10 170 110 960 3800 <100 <100 27000 22000 400 <25 <25 <25 <50 83 <5 26 <25 <5 0 06/12/2011 259497 M7 TRENCH BV M 7 2N 3 2900 8 27 <10 <10 <10 <10 <10 <10 10 10 30 <100 <100 660 5100 140 <25 <25 <25 <50 <25 <5 <25 <25 <5 0 06/12/2011 259469 M8 SV W M 8 2N 3.5 3300 9.2 17 <10 <10 <10 <10 <10 30 20 110 510 <100 <100 3400 3800 <100 <25 <25 <25 <50 <25 <5 <25 <25 <5 0 06/12/2011 259469 M9 BV M 9 2N 3.5 3200 8.1 18 <10 <10 <10 10 <10 <10 <10 <10 110 <100 <100 1900 11000 <100 <25 <25 <25 <50 <25 <5 <25 <25 <5 0 06/12/2011 259469 M9 SV W M 9 2N 3.5 3000 8.7 17 <10 <10 <10 <10 <10 <10 <10 <10 80 <100 <100 <100 5600 <100 <25 <25 <25 <50 <25 <5 <25 <25 <5 0 08/11/2010 217800 M9 M 9 2N 2.4 2800 8.1 23 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 1700 3900 <100 <5 <5 <5 <10 7 2 17 <5 2 0 06/12/2011 259497 M7 TRENCH SVE M 7 2N 2.5 3100 8.3 16 <10 3500 30 <10 50 10 10 40 60 2000 <100 520 110 <100 98 <5 9 <10 1200 38 22 <5 23 0 07/11/2011 255890 M5 WELL BASE M 5 2N 3 2100 7.9 20 <10 <10 <10 <10 <10 20 30 2300 50 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 2 <5 <5 <1 0 08/11/2010 217793 M6 M 6 2N 3 2700 8.6 20 <10 80 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 300 <100 <5 <5 <5 <10 <5 3 <5 <5 5 0 23/11/2010 219461 M10 M 10 2N 1.5 2100 7.9 24 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 5 <5 <5 2 0 23/11/2010 219461 M11 M 11 2N 1 2200 8.2 24 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 7 <5 <5 5 0 06/12/2011 259497 M7 TRENCH SVW M 7 2N 3 2600 8.1 26 <10 10 <10 <10 <10 <10 <10 10 100 <100 <100 <100 1000 <100 <5 <5 <5 <10 <5 7 <5 <5 <1 0 24/11/2010 219618 M7 M 7 2N 3 2300 8.3 24 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 450 <100 <5 <5 <5 <10 <5 54 <5 <5 <1 0 08/11/2010 217795 M4 M 4 1 3.92 2300 8.6 15 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <1 0 08/11/2010 217797 M5 M 5 2N 3.9 2600 8.1 21 <10 <10 <10 <10 <10 <10 <10 <10 40 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <5 0 23/11/2010 219456 N3 N 3 1 0.5 2200 8.1 18 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 240 <100 <5 <5 <5 <10 <5 6 <5 <5 <1 0

Validation reports colour devided revised SV BV TP worksheet E_MAJORITY_HVW TM/Revised SV, BV, TP validations 2/3 Phenoxy Phenoxy Sum of Indane, 1-ethyl- Acetic Acetic 1-(2- 3-methylbenzene, 1- acid Phenoxy acid 2-Methyl- Chloroeth Mixed Meta/Par ethyl-3-methylbenzene, herbicide: Acetic acid herbicide: 2,4,6- 4,6- 4-Chloro-2- Bis (2- 1,2- 1,2- Cis-1,2- Vinyl oxy)-2-(o- Trichloro 1- Trichloro(chl Trichloro isomers of a TPH C8-14, 1-ethyl-3- Electrical Ethofumesa Dichlorpr herbicide: Mecopro Trichlorophe dinitrophe methylphen chloroethyl) Dichlorobe Dichloroeth Dichloroeth Cyclohex Tetrachloro Trichloroeth chloride Tolyloxy)- Dichloromethyl benzenea Trichlorometh Dichloromethy Methylnap Dichlorotolue Trichlorobenz oromethyl)b nitrobenz DDD DDE Ethyltolue TPH (C8- methylbenzene, 1-ethyl- Report Column Conductivity pH Moisture Dimefox te Hempa Schradan Simazine Dicamba op MCPA p nol nol ol ether Phenol nzene ane ylene anone ethylene Toluene ylene monomer Xylene (Total) ethane phenol mine ylbenzene lbenzene thalene ne ene enzene ene and DDT ne C14) Copper Lead Manganese Nickel Zinc 2-methylphenol 4-methylbenzene Report Date Number BV Reference Row Column Letters Zone Depth µS/CM % µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg 24/11/2010 219618 N4 N 4 1 1.5 2300 8.7 19 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 15 <5 <5 <1 0 24/11/2010 219618 N6 N 6 2N 2.5 2300 8.7 27 <10 <10 <10 <10 <10 <10 <10 <10 30 <100 <100 <100 1000 <100 <5 <5 22 <10 <5 26 <5 <5 <1 0 24/11/2010 219618 N5 N 5 2N 2.5 2200 8.8 22 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 190 <100 <5 <5 <5 <10 <5 35 <5 <5 <1 0 24/11/2010 219618 N7 N 7 2N 2.5 2200 8.7 8.6 <10 10 40 <10 <10 <10 10 <10 10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 35 <5 <5 <1 0 08/11/2010 217797 N4 N 4 1 1.5 2300 7.3 21 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 <5 <5 <10 <5 <1 <5 <5 <5 0

Number of samples 395 395 350 406 406 409 409 402 395 395 395 395 395 395 395 395 395 395 395 395 395 392 395 395 395 395 3 13 2 13 1 1 5 1 1 1 1 2 1 2 2 2 2 2 1 419 Minimum value 10.00 6.50 4.90 10.00 10.00 0.10 10.00 10.00 0.01 0.01 0.01 0.01 0.10 0.10 0.10 0.10 0.10 5.00 5.00 5.00 10.00 5.00 1.00 5.00 5.00 1.00 160.00 100.00 240.00 120.00 26000.00 280.00 550.00 13000.00 13000.00 5000.00 9300.00 118.00 2000.00 22000.00 76000.00 380000.00 19000.00 67000.00 11000.00 0.00 Maximum value 8200.00 20.00 84.00 100000.00 100000.00 100000.00 100000.00 3300.00 240.00 950.00 73000.00 5900.00 2000.00 1000.00 27000.00 1100000.00 1000.00 5100.00 37000.00 1700.00 100.00 91000.00 8880.00 3700.00 62.00 2000.00 400.00 8750.00 900.00 120000.00 26000.00 280.00 9600.00 13000.00 13000.00 5000.00 9300.00 553.00 2000.00 28000.00 77000.00 740000.00 20000.00 88000.00 11000.00 2000.00 Second highest value 7600.00 11.70 38.00 100.00 27000.00 13000.00 5700.00 1800.00 200.00 200.00 46000.00 3800.00 1000.00 1000.00 25000.00 550000.00 1000.00 1300.00 17000.00 1500.00 100.00 34000.00 3200.00 1900.00 50.00 490.00 260.00 8400.00 240.00 19000.00 #NUM! #NUM! 1070.00 #NUM! #NUM! #NUM! #NUM! 118.00 #NUM! 22000.00 76000.00 380000.00 19000.00 67000.00 #NUM! 0.00 0.01- 13000- 13000- 5000- 2000- 76000- 67000- Range 10- 8200 6.5- 20 4.9- 84 10- 100000 10- 100000 0.1- 100000 10- 100000 10- 3300 0.01- 240 0.01- 950 0.01- 73000 5900 0.1- 2000 0.1- 1000 0.1- 27000 0.1- 1100000 0.1- 1000 5- 5100 5- 37000 5- 1700 10- 100 5- 91000 1- 8880 5- 3700 5- 62 1- 2000 160- 400 100- 8750 240- 900 120- 120000 26000- 26000 280- 280 550- 9600 13000 13000 5000 9300- 9300 118- 553 2000 22000- 28000 77000 380000- 740000 19000- 20000 88000 11000- 11000 0- 2000 Average concentratio n 2398.66 8.35 18.66 258.12 508.77 325.01 299.14 33.93 19.26 19.93 681.90 88.23 116.53 105.06 743.72 7610.71 113.87 28.13 228.36 30.12 14.96 708.61 75.61 56.00 7.90 12.42 273.33 3293.08 570.00 13044.62 26000.00 280.00 2564.00 13000.00 13000.00 5000.00 9300.00 335.50 2000.00 25000.00 76500.00 560000.00 19500.00 77500.00 11000.00 4.77 Number of exceedances 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 % above assessment criteria 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2.28 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Assessment criteria - - - NA NA NA NA NA NA NA NA NA 34502600 NA NA NA 20100000 3670000 1110.0 28900.0 NA 447000.0 216000000.0 35400.0 81.5 18900000.0 3000.0 2440000.0 NA 367500.0 3675000.0 75900.0 3675000.0 3670000.0 - - 932000.0 1590.0 - NA NA NA NA NA NA 16000.0 Lowest GAC foridenti Surrogate Surrogate Surrogate fied SSAC, Atkins Atkins surrogat chlorobenze Surrogate Surrogat Surrogate Source of SSAC SSAC e ne (reduced SSAC, e SSAC Surrogate SSAC, Surrogoate SSV for assessment Not Not Not Not Not Not Not Not (Pentachlor Not Not Hauxton (chlorobe Atkins Atkins Not Atkins Atkins Atkins copmou Not by a factor of chlorobenze (benzene SSAC, 1,2- Chlorobenz Atkins SSV Derived Not TPH aromatic C10- criteria - - - volatile volatile volatile volatile volatile volatile volatile Not volatile volatile ophenol) volatile volatile Not volatile SSAC nzene) SSAC SSAC volatile SSAC Atkins SSAC SSAC SSAC Atkins SSAC dns Derived SSV Volatile 10) ne ) DCA ene - - for DDD SSV - Not volatile Not volatile Not volatile Not volatile volatile - C12 Notes Coloured text from original spreadsh hb eet Across different zones informatio n enetered for zone area

Validation reports colour devided revised SV BV TP worksheet E_MAJORITY_HVW TM/Revised SV, BV, TP validations 3/3

Hauxton Post-Remediation Human Health Risk Assessment

F.2. Bentonite Wall Validation Human Health DQRA

BW Investigation and Val soil assessment

Phenoxy Acetic Phenoxy Acetic Phenoxy Acetic acid herbicide: acid herbicide: acid herbicide: 2,4,6- Bis (2-chloroethyl) 1,2- Electrical Conductivity pH Moisture Dimefox Ethofumesate Hempa Schradan Simazine Dicamba Dichlorprop MCPA Mecoprop Trichlorophenol 2-Methyl-4,6-dinitrophenol 4-Chloro-2-methylphenol ether Phenol Dichlorobenzene Report Date Report Number BV Reference Row Column Zone Depth µS/CM % µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg 10/12/2010 220113 BHG11 G 11 2S 5 1800 9.7 24 <10 60 <10 80 <10 <10 <10 <10 <10 <100 <100 170 <100 <100 34 29/11/2010 220115 BHI5 I 5 1 2.45-4 2200 9.5 16 <10 40 <10 50 <10 <10 <10 <10 <10 <100 <100 <100 700 <100 <5 06/12/2010 220099 BHG10b G 10b 1 3 2300 11.1 16 <10 20 <10 10 <10 <10 <10 <10 <10 <100 <100 <100 120 <100 <5 31/08/2011 248121 I6 SV BW I 6 1 2700 11.8 20 <10 5000 <10 <10 2300 10 <10 <10 40 <100 <100 300 800 <100 <25 31/08/2011 248121 H6 SV BW H 6 1 2500 11.8 21 <10 460 <10 250 100 10 <10 <10 90 <100 <100 <100 800 <100 <25 14/09/2011 249462 H7 SV BW H 7 1 2300 9.2 18 <10 <10 <10 20 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5 14/09/2011 249462 G8 SV BW G 8 1 2300 11.1 19 <10 <10 280 200 <10 <10 <10 <10 150 350 <100 220 <100 <100 42 06/12/2010 220099 BHG9 MARL G 9 1 2.5 2800 11.7 20 <10 50 <10 <10 <10 <10 20 20 50 <100 <100 1000 2900 <100 <5 31/08/2011 248121 H6 BV BW H 6 2N 2500 11.2 25 <10 270 380 <10 80 20 10 <10 70 <100 <100 2200 3100 <100 <25 29/11/2010 220115 BHG8 G 8 1 03-May 2800 11.6 46 <10 70 690 587 <10 20 20 60 70 170 <100 7200 1100 <100 9 31/08/2011 248121 I6 BV BW I 6 2N 2900 9.5 20 <10 690 1700 2000 140 <10 <10 <10 30 <100 <100 3800 3400 <100 <25 14/09/2011 249462 G9 BV BW G 9 1 2500 10.4 21 <10 20 310 160 <10 10 10 230 70 <100 <100 800 8800 <100 6 BHG9 06/12/2010 220099 BENTONITE G 9 1 2.5 3000 11.9 26 <10 170 <10 50 <10 10 50 50 150 110 <100 1100 2200 <100 <5 14/09/2011 249462 H7 BV BW H 7 1 3100 8.8 19 <10 330 80 380 <10 20 20 130 60 3100 <100 7200 3500 <100 <50 31/08/2011 248121 G10 SV BW G 10 2S 2200 9.7 12 <10 250 36 <10 <10 <10 10 20 40 400 <100 600 1100 100 63 24/11/2010 219615 G8 BWW G 8 1 2.5 2300 10.9 18 <10 4700 <10 <10 <10 50 70 2200 1100 3100 <100 <100 2800 <100 1000 31/08/2011 248121 G10 BV BW G 10 2N 2700 9.8 19 <10 <10 310 720 <10 10 20 440 70 <100 <100 4100 7900 <100 960 06/12/2010 220099 BHG9 G 9 1 4.5 1800 9.7 26 <10 <10 <10 <10 <10 <10 <10 <10 50 <100 <100 6700 22000 <100 690 14/09/2011 249462 G8 BV BW G 8 1 2500 8.7 18 <10 <10 7600 540 <10 <10 <10 940 60 <100 <100 13000 3000 <100 180 14/09/2011 249462 G9 SV BW G 9 1 2600 8.4 20 <10 20 650 270 <10 10 40 350 240 210 <100 2400 10000 <100 240 10/12/2010 220113 BHG12 G 12 2S 4.5 2000 10.6 20 <10 <10 390 <10 <10 <10 <10 <10 60 <100 <100 570 230 <100 <5 02/09/2011 248595 K5BWBV K 5 2N 6900 9.5 25 <10 <10 20 <10 <10 <10 <10 10 <10 <100 <100 190 2000 <100 <5 29/11/2010 220115 BHJ5 J 5 1 0.54-5 5300 12.5 53 <10 <10 <10 <10 <10 20 <10 30 20 <100 <100 <100 260 <100 <5 31/08/2011 248301 J6 SV BW J 6 2N 2200 10.9 17 <10 <10 10 90 <10 <10 <10 <10 <10 <100 <100 <100 300 <100 <5 29/11/2010 220115 BHH6 H 6 1 1.8-5 2200 11.6 16 <10 80 220 960 <10 40 40 30 30 <100 <100 230 380 <100 8 29/11/2010 220115 BHH7 H 7 1 0.69-4.5 2900 12.3 58 <10 80 140 1416 <10 10 20 20 40 <100 <100 110 620 <100 <5 31/08/2011 248301 J6 BV BW J 6 2N 5300 11.6 32 <10 20 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 620 <100 <5 02/09/2011 248595 K5BWSV K 5 2N 2300 9 22 <10 <10 20 <10 <10 10 10 30 50 <100 <100 260 710 <100 <5 29/11/2010 220115 BHF14 F 14 2S 0.61-5 4300 12.2 42 <10 <10 <10 <10 <10 90 20 120 500 <100 <100 150 <100 <100 <5 24/11/2010 219615 G12 BWW G 12 2S 4.5 2800 10.4 20 <10 <10 50 <10 <10 <10 <10 <10 110 <100 <100 530 <100 <100 <5 10/12/2010 220113 BHF13 F 13 2S 4.5 2200 10.6 24 <10 <10 <10 130 <10 <10 <10 <10 50 <100 <100 2200 <100 <100 <5 29/11/2010 220115 BHK5 K 5 1 3-4m 1800 11.6 11 <10 20 <10 <10 <10 <10 <10 20 <10 <100 <100 <100 <100 <100 <5 24/11/2010 219458 K5 BWS K 5 1 4.5 2400 8.3 20 <10 <10 <10 <10 <10 <10 <10 <10 <10 <100 <100 <100 <100 <100 <5

Number of samples 33 33 33 33 33 33 33 33 33 33 33 33 33 33 33 33 33 33 Minimum value 1800.00 8.30 11.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 100.00 100.00 100.00 100.00 100.00 5.00 Maximum value 6900.00 12.50 58.00 10.00 5000.00 7600.00 2000.00 2300.00 90.00 70.00 2200.00 1100.00 3100.00 100.00 13000.00 22000.00 100.00 1000.00 Second highest value 5300.00 12.30 53.00 10.00 4700.00 1700.00 1416.00 140.00 50.00 50.00 940.00 500.00 3100.00 100.00 7200.00 10000.00 100.00 960.00 Range 1800- 6900 8.3- 12.5 11- 58 10- 10 10- 5000 10- 7600 10- 2000 10- 2300 10- 90 10- 70 10- 2200 10- 1100 100- 3100 100- 100 100- 13000 100- 22000 100- 100 5- 1000 Average concentration 2800.00 10.53 23.76 10.00 378.48 395.33 244.33 88.18 15.76 16.67 147.27 99.70 304.24 100.00 1697.88 2428.48 100.00 105.06 Number of exceedances 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 % above assessment criteria 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Assessment criteria - - - NA NA NA NA NA NA NA NA NA 16000 NA NA NA 20100000 3670000.0 Surrogate Source of Atkins SSV Surrogate Atkins assessment Not Not (Pentachlorop Hauxton SSV criteria - - - volatile Not volatile Not volatile Not volatile Not volatile volatile Not volatile Not volatile Not volatile henol) Not volatile Not volatile Not volatile SSV (chlorobenzene)

Validation Reports BW Colour Divided_P_HW/BW Investigation and Val soil 1/2 BW Investigation and Val soil assessment

1,2- Cis-1,2- Vinyl chloride Xylene Dichloroethane Dichloroethylene Cyclohexanone Tetrachloroethylene Toluene Trichloroethylene monomer (Total) 1-(2-Chloroethoxy)-2-(o-Tolyloxy)-ethane Dichloromethylphenol Report Date Report Number BV Reference Row Column Zone Depth µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg 10/12/2010 220113 BHG11 G 11 2S 5 <5 13 <10 8 1 1400 <5 1 29/11/2010 220115 BHI5 I 5 1 2.45-4 <5 <5 <10 8 1 <5 <5 <1 06/12/2010 220099 BHG10b G 10b 1 3 <5 <5 <10 19 4 7 <5 <1 31/08/2011 248121 I6 SV BW I 6 1 31 <25 <50 46 180 44 <25 7 31/08/2011 248121 H6 SV BW H 6 1 <25 <25 <50 100 93 35 <25 <5 14/09/2011 249462 H7 SV BW H 7 1 <5 27 <10 120 6 120 <5 <1 14/09/2011 249462 G8 SV BW G 8 1 <5 12 <10 140 9 95 <5 1 06/12/2010 220099 BHG9 MARL G 9 1 2.5 <5 <5 <10 190 8 33 <5 2 31/08/2011 248121 H6 BV BW H 6 2N 35 88 <50 220 270 150 <25 48 29/11/2010 220115 BHG8 G 8 1 03-May <5 <5 <10 270 200 17 <5 68 31/08/2011 248121 I6 BV BW I 6 2N 1200 300 <50 280 240 150 <25 54 14/09/2011 249462 G9 BV BW G 9 1 29 46 <10 320 13 140 <5 1 BHG9 06/12/2010 220099 BENTONITE G 9 1 2.5 <5 7 <10 410 62 71 <5 17 14/09/2011 249462 H7 BV BW H 7 1 520 <50 <100 1300 410 260 <50 110 140 31/08/2011 248121 G10 SV BW G 10 2S <25 <25 <50 1600 7 110 <25 6 3000 24/11/2010 219615 G8 BWW G 8 1 2.5 <250 <250 <500 3500 170000 400 <250 25000 31/08/2011 248121 G10 BV BW G 10 2N 81 <25 <50 4700 370 440 <25 80 2300 06/12/2010 220099 BHG9 G 9 1 4.5 <5 8 <10 4700 22 2200 <5 36 14/09/2011 249462 G8 BV BW G 8 1 <25 180 <50 7600 12 3400 <25 35 14/09/2011 249462 G9 SV BW G 9 1 <25 40 <50 16000 10 960 <25 15 10/12/2010 220113 BHG12 G 12 2S 4.5 <5 <5 <10 <5 2 12 <5 2 02/09/2011 248595 K5BWBV K 5 2N 110 11 <10 <5 2 56 <5 <1 29/11/2010 220115 BHJ5 J 5 1 0.54-5 <5 <5 <10 <5 75 <5 <5 <1 31/08/2011 248301 J6 SV BW J 6 2N <5 <5 <10 <5 <1 <5 <5 <1 29/11/2010 220115 BHH6 H 6 1 1.8-5 <5 <5 <10 <5 2 <5 <5 5 29/11/2010 220115 BHH7 H 7 1 0.69-4.5 <5 41 <10 <5 8 <5 <5 2 31/08/2011 248301 J6 BV BW J 6 2N 10 <5 <10 <5 3 <5 <5 <1 02/09/2011 248595 K5BWSV K 5 2N <5 <5 <10 <5 2 <5 <5 <1 29/11/2010 220115 BHF14 F 14 2S 0.61-5 <5 <5 <10 <5 4 <5 <5 <1 24/11/2010 219615 G12 BWW G 12 2S 4.5 <5 <5 <10 <5 110 <5 <5 25 10/12/2010 220113 BHF13 F 13 2S 4.5 <5 <5 <10 <5 2 <5 <5 10 29/11/2010 220115 BHK5 K 5 1 3-4m <5 <5 <10 <5 3 <5 <5 <1 24/11/2010 219458 K5 BWS K 5 1 4.5 <5 <5 <10 <5 2 <5 <5 <1

Number of samples 33 33 33 33 33 33 33 33 1 2 Minimum value 5.00 5.00 10.00 5.00 1.00 5.00 5.00 1.00 3000.00 140.00 Maximum value 1200.00 300.00 500.00 16000.00 170000.00 3400.00 250.00 25000.00 3000.00 2300.00 Second highest value 520.00 250.00 100.00 7600.00 410.00 2200.00 50.00 110.00 #NUM! 140.00 Range 5- 1200 5- 300 10- 500 5- 16000 1- 170000 5- 3400 5- 250 1- 25000 3000- 3000 140- 2300 Average concentration 74.73 37.82 37.27 1260.48 5216.18 307.88 18.64 773.97 3000.00 1220.00 Number of exceedances 1 0 0 0 0 0 1 0 0 0 % above assessment criteria 3.03 0.00 0.00 0.00 0.00 0.00 3.03 0.00 0.00 0.00 Assessment criteria 1100.0 28900.0 NA 447000.0 216000000 354000.0 81.5 189000 3001.0 238000.0 Surrogate Source of Atkins SSV assessment (Vinyl Chloride) Hauxton Hauxton GAC for surrogates identified in the criteria Atkins SSV Not volatile Atkins SSV SGV Atkins SSV SSAC SSAC DQRA Derived SSV

Validation Reports BW Colour Divided_P_HW/BW Investigation and Val soil 2/2

Hauxton Post-Remediation Human Health Risk Assessment

F.3. Treatment Bed Analysis Validation DQRA

Hauxton Ex-situ Treatment Bed Validation Sample Human Health Assessment Appendix C.4 Phenoxy Phenoxy Phenoxy Acetic acid Acetic acid Acetic acid Bis(2- Vinyl herbicide: herbicide: herbicide: 2,4,6- 2-Methyl-4,6- 4-Chloro-2- chloroethyl) 1,2- 1,2- Cis-1,2- chloride Xylene Report Reinstatement Dimefox Ethofumesate Hempa Schradan Simazine Dicamba Dichlorprop MCPA Mecoprop Trichlorophenol dinitrophenol methylphenol ether Phenol Dichlorobenzene Dichloroethane Dichloroethylene Cyclohexanone Tetrachloroethylene Toluene Trichloroethylene monomer (Total) Location Date Number Lab Ref Zone µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg TB107 30/11/2010 221374 221374 006 Amalgamated with SP C 0 350 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TB127 04/04/2011 233536 233536 001 2S 0 0 0 0 0 0 0 170 60 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TB132 12/04/2011 234520 234520 006 2S 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TB152 28/05/2011 245380 245380 005 2S/2N 0 60 0 0 100 0 0 0 0 0 0 130 0 0 0 0 0 0 0 0 0 0 0 TB169 26/08/2011 248827 248827 003 3 0 50 0 0 0 0 0 0 0 0 0 0 200 0 0 0 0 0 0 4 0 0 0 TB17 14/06/2011 240640 240640 003 Amalgamated with SP C 0 60 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11 0 0 1 TB176 05/10/2011 252997 252997 001 2S 0 50 160 770 0 40 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TB178 13/10/2011 253912 253912 004 3 0 140 0 0 0 10 40 10 7300 0 0 35000 5000 0 0 0 6 0 0 6 0 0 4 TB2 Deviating 220670 220670 001 2N 0 20 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TB21 10/02/2011 228271 228271 001 Amalgamated with SP B 0 30 0 0 0 0 0 10 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TB41 30/03/2011 233076 233076 001 Amalgamated with SP A 0 750 0 0 30 50 10 0 100 1900 0 0 0 0 0 0 0 0 0 14 0 0 0 TB69A 18/07/2011 244348 244348 017 2N 0 8900 0 0 80 140 10 0 70 1300 0 100 100 0 0 0 0 0 0 11 0 0 0 TB3 21/07/2011 244620 244620 001 3 0 220 0 0 0 0 0 200 20 200 0 0 0 0 39 0 0 0 5 9 0 0 7 TB5 05/01/2011 224038 224038 001 2N 0 30 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 0 0 0 0 TB125 06/07/2011 243155 243155 002 2S/2N 0 710 150 0 220 0 0 0 0 0 0 0 0 0 0 0 0 0 6 0 0 0 3 TB43 03/03/2011 230138 230138 008 2N 0 120 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 4 0 0 0 TB174 07/10/2011 253271 253271 002 2S 0 240 870 1400 10 150 0 10 0 1300 0 160 110 0 0 0 0 0 7 0 0 0 0 TB175 07/10/2011 253271 253271 001 2S/3 0 220 0 0 180 220 0 20 0 0 0 0 0 0 0 0 0 0 8 0 0 0 0 TB89 12/05/2011 237183 237183 004 Amalgamated with SP A 0 90 0 0 20 0 0 6700 2300 0 0 1500 300 0 0 0 0 0 9 0 0 0 2 TB73 21/04/2011 235657 235657 004 2N 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10 0 0 0 0 TB12 21/04/2011 235657 235657 005 2N 0 30 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11 7 0 0 2 TB124 10/11/2010 218845 218845 004 2S 0 10 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11 0 0 0 0 TB157 01/08/2011 246061 246061 003 2S/3 0 110 0 0 50 40 500 9600 1900 0 0 3400 7500 0 0 0 0 0 12 0 0 0 0 TB37 12/05/2011 237183 237183 001 Amalgamated with SP A 0 290 0 0 20 0 0 0 0 0 0 0 0 0 0 0 0 0 12 4 0 0 0 TB48 23/06/2011 241752 241752 001 2N 0 420 0 0 0 0 0 30 0 840 0 0 0 0 0 0 0 0 12 21 0 0 0 TB67 23/03/2011 232310 232310 008 2N 0 60 0 0 20 0 0 0 0 0 0 0 0 0 0 0 0 0 12 0 0 0 0 TB138 01/06/2011 239396 239396 005 2N 0 2600 190 0 690 210 240 2700 1200 2500 0 0 400 0 6 0 0 0 13 12 0 0 4 TB109 16/06/2011 240921 240921 007 2N 0 5200 0 0 830 190 60 640 380 700 0 0 200 0 0 0 0 0 14 3 0 0 9 TB120 31/05/2011 239066 239066 003 Amalgamated with TB160, TB162 0 310 0 0 1400 0 0 330 0 0 0 0 0 0 0 0 0 0 16 8 0 0 0 TB15 10/05/2011 237224 237224 001 2N 0 120 0 0 90 0 0 0 0 300 0 0 0 0 0 0 0 0 18 3 0 0 0 TB20 00/01/1900 211305 211305 003 2N 0 90 0 0 260 10 0 0 0 260 0 0 0 0 0 0 0 0 18 5 0 0 1 TB6 14/06/2011 240640 240640 001 3 0 600 0 0 320 50 0 60 50 700 0 0 100 0 0 0 0 0 19 5 0 0 1 TB10 30/09/2010 214286 214286 001 2N 0 0 0 0 0 20 0 180 60 0 0 0 0 0 0 0 0 0 22 8 0 0 0 TB121 01/07/2011 242723 242723 003 Amalgamated with TB160, TB162 0 120 20 0 190 0 0 0 20 0 0 500 0 0 0 0 0 0 22 0 0 0 0 TB151 00/01/1900 239401 0 Amalgamated with SP A 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 22 1 0 0 0 TB47 24/03/2011 232481 232481 015 2N 0 590 0 0 90 30 10 0 30 0 0 0 0 0 7 0 0 0 23 2 0 0 0 TB25 12/05/2011 237409 237409 001 2N 0 1700 0 0 1700 0 0 0 0 400 0 0 0 0 0 0 0 0 24 17 0 0 2 TB40 12/05/2011 237409 237409 003 2N 0 1600 0 0 1600 0 0 600 200 1700 0 0 200 0 0 0 0 0 24 13 0 0 1 TB97 05/07/2011 242997 242997 001 2S/2N 0 110 0 0 30 0 0 90 0 0 0 0 100 0 32 0 6 0 24 5 0 0 0 TB44 04/04/2011 233536 233536 003 2N 0 2300 0 0 50 10 10 150 90 0 0 0 0 0 150 0 0 0 25 13 0 0 4 TB57 08/06/2011 240129 240129 006 2N 0 250 40 0 110 20 10 0 0 530 0 0 120 0 47 0 0 0 25 6 0 0 0 TB9 24/03/2011 232481 232481 010 2N 0 0 0 0 0 0 0 0 0 150 0 0 0 0 0 0 0 0 25 10 0 0 1 TB11 24/03/2011 232481 232481 017 2N 0 340 0 0 0 10 0 0 0 170 0 0 0 0 0 0 0 0 29 10 0 0 3 TB7 26/05/2010 201011 201011 012 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 30 130 0 0 4 TB144 07/07/2011 243409 243409 004 2S/2N 0 670 0 0 90 40 0 720 2700 120 0 0 130 0 0 0 0 0 31 1 0 0 0 TB19 13/05/2011 237411 237411 004 2N 0 780 0 0 0 80 0 210 60 500 0 0 0 0 0 0 0 0 33 2 0 0 0 TB141 16/06/2011 240921 240921 009 2S/2N 0 250 0 0 210 0 0 280 140 0 0 0 10000 0 0 0 0 0 34 0 0 0 0 TB105 08/06/2011 240136 240136 005 2S/2N 0 270 0 0 240 20 10 0 40 120 0 0 0 0 26 0 0 0 38 1 0 0 2 TB55 18/07/2011 244348 244348 013 2S 0 40 0 640 0 0 0 0 0 200 0 0 0 0 25 0 0 0 38 8 0 0 1 TB85 12/05/2011 237183 237183 003 2N 0 640 0 0 260 0 0 0 0 300 0 1000 500 0 12 0 0 0 39 5 0 0 1 TB90 04/04/2011 233533 233533 002 Amalgamated with SP A 0 60 0 0 0 10 0 110 540 0 0 0 0 0 0 0 0 0 39 3 0 0 0 TB130 12/04/2011 234517 234517 005 2S 0 530 20 0 220 20 0 0 0 0 0 0 0 0 0 0 0 0 40 0 0 0 0 TB32 10/02/2011 228271 228271 003 2N 0 140 0 0 40 10 0 20 0 0 0 0 0 0 0 0 0 0 40 4 0 0 0 TB140 17/06/2011 241130 241130 005 2S/2N 0 210 0 0 40 0 0 0 40 0 0 0 200 0 0 0 0 0 46 1 0 0 0 TB95 28/07/2011 245386 245386 006 2S 0 690 0 0 560 50 0 80 110 430 0 150 140 0 7 0 0 0 48 2 0 0 0 TB39 20/04/2011 235498 235498 002 Amalgamated with SP A 0 30 0 0 30 0 0 0 0 0 0 0 0 0 0 0 0 0 51 2 0 0 3 TB155 17/08/2011 248124 248124 006 2S/2N 0 130 0 0 40 30 40 3400 720 0 0 1000 1300 0 0 0 0 0 52 0 0 0 0 TB36 25/06/2010 204252 204252 002 2N 0 200 0 0 30 10 40 4600 340 600 0 1000 3800 0 0 0 0 0 57 8 0 0 1 TB45 24/03/2011 232481 232481 003 Amalgamated with SP A 0 0 0 0 0 100 0 50 30 0 0 0 100 0 7 0 0 0 73 2 0 0 0 TB13 30/03/2011 233076 233076 003 2N 0 50 0 0 0 40 0 0 90 230 0 0 190 0 0 0 0 0 74 6 0 0 2 TB42 23/08/2010 210561 210561 003 2S 0 4500 0 0 130 0 0 700 100 310 0 120 100 0 48 0 0 0 76 16 0 0 8 TB75 18/07/2011 244348 244348 016 2S/2N 0 28000 40 0 490 140 0 70 0 1200 0 0 0 0 0 0 0 0 82 24 0 0 0 TB129 07/06/2011 240138 240138 006 2N 0 380 0 0 170 0 0 0 0 0 0 0 0 0 0 0 0 0 88 0 0 0 0 TB96 08/06/2011 240136 240136 004 2N 0 80 0 0 10 0 0 60 0 0 0 0 0 0 14 0 0 0 88 2 0 0 0 TB65 28/07/2011 245383 245383 002 2N 0 1500 0 210 5,100 230 0 60 30 650 0 120 240 0 0 0 0 0 100 10 0 0 2 TB8 00/01/1900 200739 200739 001 1 0 0 0 0 0 0 0 0 0 0 0 0 200 0 0 28 0 0 110 990 0 0 16 TB154 17/08/2011 248124 248124 003 2S/2N 0 130 0 0 60 60 210 9500 1000 0 0 2400 9700 0 0 0 0 0 120 11 0 0 0 TB46 00/01/1900 233080 233080 003 2N 0 270 0 0 10 20 50 0 0 0 0 0 0 0 0 0 0 0 120 5 0 0 0 TB71 14/06/2011 240781 240781 003 2N 0 210 0 0 20 0 0 0 0 100 0 0 0 0 28 0 0 0 130 8 0 0 2 TB29 30/09/2010 212486 212486 002 2N 0 20 0 0 10 130 0 20 0 0 0 0 0 0 0 0 0 0 150 1 0 0 0 TB98 08/06/2011 240136 240136 003 2S 0 430 0 0 1200 40 520 350 0 110 210 270 0 0 0 0 0 0 150 10 0 0 1 TB56 05/07/2011 242851 242851 006 2N 0 3400 70 0 200 90 40 2100 410 1300 0 410 310 0 1900 0 0 0 180 22 0 0 8 TB78 03/02/2011 227048 227048 003 Amalgamated with SP A 0 160 0 0 80 0 0 0 0 0 0 0 0 0 15 0 0 0 190 6 0 0 3 TB31 20/05/2011 238165 238165 007 2N 0 200 0 0 50 20 0 0 0 0 0 0 0 0 9 0 0 0 200 2 0 0 3 TB58 09/06/2011 240137 240137 004 2N 0 250 0 0 0 20 0 0 0 0 0 0 0 0 6 0 0 0 200 2 0 0 0 TB145 12/07/2011 243739 243739 006 2N 0 110 0 0 20 0 0 0 0 0 0 0 0 0 23 0 0 0 230 20 0 0 1 TB18 04/08/2010 208440 208440 004 2N 0 1100 0 0 40 30 0 70 100 130 0 570 240 0 0 0 0 0 250 6 0 0 6 TB177 14/10/2011 254403 254403 001 Retained onsite 0 30 28 70 0.27 10 0.1 1.1 10 0 0 0 0 0 8 0 0 0 300 0 0 0 0 TB100 12/09/2011 250401 250401 002 0 1000 520 470 170 1100 200 100000 28000 13000 240000 5500 5700 0 10 0 0 0 370 29 0 0 32 TB23 03/03/2011 230138 230138 004 2N 0 50 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 590 35 0 0 5 TB14 26/05/2010 201011 201011 011 2N 0 520 0 0 20 0 0 3100 230 0 0 2800 9900 0 0 0 0 0 720 260 0 0 16 TB59 24/03/2011 0 0 2N 0 190 0 0 20 40 10 40 40 0 0 0 0 0 34 0 0 0 860 11 0 0 2 TB61 08/06/2011 240136 240136 002 2S 0 350 270 0 60 90 0 70 0 930 0 0 0 0 180 14 0 0 940 13 0 0 6 TB62 08/06/2011 240136 240136 002 2S 0 350 270 0 60 90 0 70 0 930 0 0 0 0 180 14 0 0 940 13 0 0 6 TB76 20/09/2011 251499 251499 002 3 0 8100 0 120 960 370 0 510 570 4900 50000 420 240 0 0 0 0 0 1200 21 0 0 23 TB69F 01/08/2011 246061 246061 005 3 0 20000 1500 1100 3300 190 10 500 520 1100 1100 130 180 0 28 0 0 0 1300 8 0 0 34 TB69E 01/08/2011 246061 246061 004 3 0 14000 0 0 1600 80 20 850 870 1400 3800 150 160 0 41 0 0 0 3700 7 0 0 24 TB88 20/09/2011 251499 251499 004 3 0 4500 0 430 980 370 26 2900 2000 6400 50000 270 360 0 40 0 0 0 4000 28 0 0 75 TB68 20/04/2011 235498 235498 004 2N 0 30 0 0 0 200 0 0 190 0 0 0 180 0 8 0 0 0 5700 0 0 0 0 TB52 20/07/2011 244617 244617 005 2N 400 0 0 0 0 0 890 30 0 120 0 0 0 0 0 0 0 0 5 7 5 0 0 TB77 11/04/2011 234179 234179 002 2N 0 100 0 0 60 20 0 0 0 0 0 0 0 0 6 0 0 0 37 2 5 0 1 TB69B 08/07/2011 243407 243407 002 2N 0 3000 0 0 200 70 0 20 0 1100 0 120 110 0 12 0 0 0 41 22 5 0 5 TB70 24/03/2011 232481 232481 012 2N 0 50 0 0 40 0 0 0 40 180 0 0 0 0 5 0 0 0 71 1 5 0 0 TB136 23/05/2011 238552 238552 007 2S 0 2200 0 0 380 100 20 0 180 2000 0 0 0 0 9 0 0 0 19 6 6 0 4 TB35 04/04/2011 233535 233535 002 2N 0 90 0 0 120 20 10 110 190 200 0 0 0 0 13 0 0 0 51 4 6 0 3 TB108 31/05/2011 239065 239065 004 2S/2N 0 1400 0 0 480 80 0 0 0 100 0 200 0 0 15 0 6 0 61 2 6 0 6 TB80 00/01/1900 229787 229787 011 2N 0 60 0 0 610 30 0 110 0 0 0 0 0 0 0 0 0 0 88 4 6 0 2 TB64 11/02/2011 230931 230931 004 2N 0 280 0 0 0 20 10 430 910 0 0 1800 360 0 94 0 83 0 130 55 6 17 24 TB92 04/04/2011 233535 233535 004 Amalgamated with SP A 0 90 0 0 0 10 0 140 70 0 0 0 0 0 0 0 0 0 210 22 6 0 1 TB49 03/08/2011 246180 246180 001 2S/2N 0 240 180 7500 60 30 20 0 20 0 0 0 0 0 23 0 0 0 530 4 6 0 5 TB27 10/02/2011 228271 228271 002 2N 0 980 0 0 40 10 10 470 60 1200 0 0 500 0 170 0 0 0 11000 23 6 0 190 TB106 27/07/2011 245233 245233 007 2N 0 1600 0 0 0 10 0 0 0 1900 0 400 100 0 81 0 6 0 44 68 7 0 3 TB153 19/08/2011 247963 247963 004 2S 0 90 0 0 20 40 0 2800 60 0 0 180 2600 0 0 7 0 0 300 2 7 0 0 TB126 02/02/2011 226715 226715 004 Amalgamated with TB56 0 230 0 0 0 0 0 0 0 0 0 0 0 0 60 0 0 0 340 5 7 0 19 TB143 26/08/2011 249097 249097 005 2S 0 230 0 0 70 0 0 0 0 200 0 0 300 0 0 0 0 0 51 11 8 0 2 TB34 12/05/2011 237409 237409 002 2N 0 2200 10 0 3000 60 0 400 30 1400 0 0 200 0 0 0 5 0 120 21 8 0 5 TB149 20/07/2011 244623 244623 003 2N 0 320 0 0 100 0 0 0 20 0 0 0 0 0 11 0 0 0 140 0 8 0 0 TB84 16/05/2011 237754 237754 003 0 11000 0 0 1200 3200 590 490000 510000 82000 3500000 15000 6600 0 14 0 0 0 240 230 8 0 21 TB87 07/09/2011 249833 249833 004 3 0 2300 130 160 800 120 30 1700 4700 2400 80000 600 250 0 42 0 0 0 640 7 8 0 6 TB30 04/04/2011 233533 233533 005 2N 0 0 0 0 0 520 40 77000 180 0 0 600 8600 0 19 25 0 0 1100 5 8 0 0 TB147 07/07/2011 243413 243413 003 2N 0 0 0 0 0 0 0 190 70 0 0 0 0 0 110 8 0 0 2800 91 8 0 390 TB122 01/07/2011 242723 242723 005 2S/2N 0 220 0 0 730 0 0 0 0 0 0 400 0 0 12 0 5 0 57 3 9 0 4 TB123 12/05/2011 237214 237214 005 Amalgamated with SP B 0 600 40 0 2100 0 0 90 30 0 0 200 0 0 0 0 0 0 110 4 9 0 1 TB146 08/07/2011 243407 243407 005 2S/2N 0 70 0 0 30 0 0 0 0 0 0 200 740 0 22 23 0 0 120 1 9 0 0 TB91 04/04/2011 233535 233535 003 Amalgamated with SP A 0 80 0 0 0 30 0 950 330 0 0 0 100 0 0 0 0 0 130 8 9 0 1 TB4 24/03/2011 232481 232481 009 2N 0 70 0 0 270 20 0 0 0 0 0 0 0 0 0 0 0 0 140 1 9 0 0 TB26 00/01/1900 229713 229713 002 2N 0 30 0 0 0 20 0 30 30 0 0 0 0 0 0 0 0 0 52 12 10 0 10 TB69D 02/08/2011 246057 246057 003 3 0 17000 0 0 450 120 10 100 20 1100 0 460 0 0 9 0 0 0 190 19 10 0 16 TB134 07/06/2011 240132 240132 004 2N 0 1400 70 0 110 190 70 1400 560 1000 0 0 320 0 13 0 0 0 10 10 11 0 1 TB167 21/09/2011 251704 251704 002 3 0 630 0 0 0 10 0 0 0 180 0 200 0 0 0 0 0 0 10 0 11 0 0 TB133 12/04/2011 234520 234520 004 2S/2N 0 5000 70 0 580 380 220 6000 1900 2300 0 300 200 0 150 0 0 0 220 810 11 0 110 TB72 20/07/2010 205782 205782 005 0 200 0 0 0 0 0 660 130 0 0 0 3900 0 1900 250 0 0 1400 25 11 0 5 TB112 27/07/2011 245233 245233 003 2S/2N 0 1900 2200 0 1,900 60 0 0 20 1200 3100 400 200 0 11 0 0 0 34 85 12 0 16 TB135 12/04/2011 234516 234516 002 2N 0 730 0 0 70 30 10 0 0 100 0 0 100 0 0 0 0 0 50 10 13 0 3 TB93 07/09/2011 249833 249833 006 3 0 1800 0 100 670 130 0 130 1200 6300 66000 220 200 0 28 0 0 0 3000 6 13 0 12 TB137 01/06/2011 239396 239396 003 2S 0 3900 460 0 280 190 50 630 370 5300 0 0 0 0 6 0 0 0 45 130 14 0 21 TB131 12/04/2011 234517 234517 003 2N 0 2200 20 0 500 20 0 0 0 0 0 0 0 0 5 0 0 0 47 1 14 0 27 TB79 00/01/1900 229787 229787 008 2N 0 20 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 100 12 14 0 3 TB69C 02/08/2011 246057 246057 002 3 0 23000 0 0 690 200 20 390 150 540 660 0 0 0 24 0 0 0 320 23 14 0 32 TB1 19/05/2010 202760 202760 001 3 0 100 0 0 0 20 20 270 110 0 0 0 0 0 30 89 0 0 410 950 14 0 3 TB83 28/07/2011 245386 245386 004 2S/2N 0 7900 0 770 2,600 80 10 10 50 3300 0 810 1700 0 25 33 0 0 420 71 14 0 10 Hauxton Ex-situ Treatment Bed Validation Sample Human Health Assessment Appendix C.4 Phenoxy Phenoxy Phenoxy Acetic acid Acetic acid Acetic acid Bis(2- Vinyl herbicide: herbicide: herbicide: 2,4,6- 2-Methyl-4,6- 4-Chloro-2- chloroethyl) 1,2- 1,2- Cis-1,2- chloride Xylene Report Reinstatement Dimefox Ethofumesate Hempa Schradan Simazine Dicamba Dichlorprop MCPA Mecoprop Trichlorophenol dinitrophenol methylphenol ether Phenol Dichlorobenzene Dichloroethane Dichloroethylene Cyclohexanone Tetrachloroethylene Toluene Trichloroethylene monomer (Total) Location Date Number Lab Ref Zone µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg TB102 03/06/2011 239626 239626 006 2N 0 840 0 0 230 60 0 110 0 200 0 0 0 0 94 0 0 0 1100 3 14 0 4 TB82 24/11/2010 220984 220984 006 Amalgamated with TB95 0 590 0 0 100 0 0 0 0 180 0 0 160 0 9 0 0 0 40 56 16 0 16 TB139 17/06/2011 241130 241130 003 2N 0 2300 0 0 370 40 90 1500 570 800 0 800 700 0 6 0 0 0 150 16 16 0 3 TB148 26/08/2011 249097 249097 006 2S 0 90 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 33 0 17 0 0 TB22 05/01/2011 224038 224038 002 2N 0 70 0 0 70 20 0 0 0 0 0 0 0 0 0 0 16 0 1500 4 17 0 27 TB156 01/09/2011 249482 249482 004 2S 0 450 0 0 60 0 30 0 4900 0 0 330 0 0 0 0 5 0 8 2 18 0 0 TB172 21/09/2011 251694 251694 006 3 0 0 110 70 0 0 0 21 88 0 0 640 250 0 0 0 6 0 8 1 18 0 6 TB166 12/09/2011 250404 250404 004 2S 0 310 0 0 0 0 0 0 0 310 0 110 0 0 0 0 0 0 79 4 18 0 1 TB164 14/09/2011 250749 250749 002 2S 0 20 0 0 0 20 0 240 12 0 0 400 800 0 70 37 0 0 250 2 18 0 4 TB94 02/06/2011 239619 239619 003 2N 0 1400 0 0 130 40 0 130 200 100 0 0 0 0 110 0 44 0 270 18 18 0 5 TB86 10/02/2011 230936 230936 006 2N 0 230 0 0 410 30 10 0 20 0 0 0 0 0 91 0 11 0 520 100 18 0 27 TB117 27/07/2011 245233 245233 006 2N 0 6800 0 0 0 30 0 0 0 100 0 0 0 0 0 0 0 0 7 2 20 0 0 TB163 13/09/2011 250753 250753 004 2S 0 1300 0 10 50 30 0 1400 20 0 0 500 150 0 32 9 0 0 170 1 20 0 0 TB28 31/03/2011 233097 233097 005 2N 0 150 20 0 60 80 0 190 140 0 0 0 0 0 27 150 0 0 5400 11 20 0 7 TB111 07/06/2011 239865 239865 008 2N 0 2300 150 0 2200 120 0 100 410 300 0 0 0 0 0 0 7 0 10 0 21 0 4 TB103 02/06/2011 239617 239617 002 2N 0 4000 0 0 1000 170 110 5500 3800 1100 0 0 3600 0 26 0 0 0 11000 7 21 0 11 TB101 03/06/2011 239626 239626 004 2N 0 1100 0 110 1,200 10 0 4900 0 0 0 0 0 0 19 0 0 0 810 3 24 0 4 TB99 18/07/2011 244506 244506 005 2S/2N 0 5300 40 0 2400 80 220 6600 2000 4600 0 400 600 0 290 0 0 0 3500 250 25 0 1300 TB50 05/08/2011 246533 246533 001 3 0 2600 300 3000 0 20 0 0 0 600 0 0 0 0 70 0 0 0 35 36 28 0 0 TB51 05/05/2011 236570 236570 002 2N 0 60 0 30 10 30 0 20 10 0 0 0 0 0 48 220 16 0 510 14 29 0 0 TB171 21/09/2011 251704 251704 001 3 0 320 13000 4300 190 20 40 350 40 1000 0 1900 3600 0 690 0 8 0 23 0 32 0 1 TB160 06/09/2011 249841 249841 003 2S/3 0 7200 1000 2200 190 30 0 0 0 540 0 760 130 0 790 0 41 0 2200 140 33 0 34 TB161 00/01/1900 252537 252537 004 3 0 640 340 740 0 50 30 20 20 270 0 0 320 0 23 0 13 0 160 30 36 0 8 TB16 31/03/2011 233097 233097 001 2N 0 440 20 0 290 120 10 170 260 1100 0 0 0 0 14 0 43 0 99 24 40 0 9 TB63 19/08/2011 247960 247960 004 2S 0 0 0 320 0 30 0 0 0 2400 0 530 310 0 510 0 0 0 290 150 40 0 7 TB150 20/07/2011 244623 244623 004 2S/2N 0 2300 0 0 260 0 0 10 0 400 0 0 3600 0 7 0 6 0 680 2 40 0 4 TB173 21/09/2011 251694 251694 005 2S/3 0 700 480 520 260 30 38 740 140 550 0 370 460 0 44 0 0 0 32 4 41 0 84 TB158 19/08/2011 247963 247963 007 2S 0 80 20 70 30 10 10 1900 30 200 0 1900 5300 0 190 20 0 0 300 4 41 0 1 TB170 21/09/2011 251694 251694 002 3 0 460 8000 56000 360 33 22 250 95 4400 0 520 1800 0 56 0 0 0 280 35 42 0 12 TB113 19/08/2011 247960 247960 005 3 0 1100 1300 5100 430 250 40 310 160 920 200 0 0 0 54 0 0 0 440 5 42 0 61 TB24 11/02/2011 230931 230931 001 2N 0 150 0 0 20 30 20 30 60 0 0 0 0 0 41 34 81 0 840 290 42 0 10 TB115C 23/08/2011 248438 248438 006 3 0 1200 2000 8400 240 40 0 0 0 510 0 0 120 0 26 0 0 0 140 10 44 0 0 TB33 31/03/2011 233097 233097 006 2N 0 260 0 0 70 80 0 120 110 130 0 0 4600 0 8 360 0 0 1800 32 50 0 5 TB115A 23/08/2011 248438 248438 001 2S/2N 0 3200 2400 6900 390 60 50 220 140 270 0 0 120 0 0 0 0 0 91 0 51 0 0 TB104 25/05/2011 238743 238743 005 2N 0 720 0 0 180 150 20 600 900 300 100 200 0 0 24 0 0 0 940 3 53 0 12 TB66 05/01/2011 224038 224038 005 2N 0 80 0 0 30 0 0 0 0 0 0 0 120 0 5 0 0 0 83 90 63 0 16 TB60 27/07/2011 245233 245233 004 2S/2N 0 1400 0 0 0 20 0 0 0 3000 0 400 200 0 110 0 24 0 120 150 71 0 4 TB159 13/09/2011 250753 250753 003 2S 0 70 50 20 30 30 20 1100 30 0 0 2100 1000 0 38 0 0 0 220 0 71 0 1 TB54 05/08/2011 246373 246373 006 2S 0 970 60 110 0 0 0 0 0 360 0 0 0 0 610 0 0 0 250 9 74 0 2 TB115D 23/08/2011 248438 248438 002 3 0 1800 2000 7600 410 50 40 140 80 1300 0 130 260 0 110 0 0 0 160 18 85 0 6 TB110 24/03/2011 232481 232481 019 2N 0 2900 0 0 100 110 70 270 640 3600 0 470 210 0 420 96 36 0 2700 590 95 0 120 TB115B 15/07/2011 244016 244016 004 2S/2N 0 3500 160 0 870 120 0 900 420 1000 0 0 0 0 240 0 17 0 63 48 100 0 42 TB38 24/03/2011 232481 232481 013 2N 0 200 0 0 50 0 0 0 0 0 0 0 0 0 390 0 36 0 240 14 100 0 18 TB74 14/06/2011 240781 240781 005 2N 0 1200 0 0 90 30 0 0 150 5500 0 0 0 0 22 0 930 0 760 420 130 0 23 TB128 00/01/1900 244627 244627 004 2S/2N 0 480 170 390 120 0 0 0 0 200 0 600 200 200 0 0 28 0 91 15 150 0 1 TB114 11/08/2011 247170 247170 007 3 0 1000 5200 3600 150 110 10 70 20 100 0 0 0 0 53 0 0 0 700 0 150 0 0 TB53 05/08/2011 246533 246533 002 3 0 1600 1800 3600 210 40 0 0 0 1300 0 100 500 0 760 61 0 0 1500 27 170 0 7 TB162 13/09/2011 250740 250740 004 2S/3 0 760 1500 2800 140 37 100 400 310 150 0 110 390 0 0 0 0 0 100 3 180 0 0 TB116 30/08/2011 249082 249082 007 3 0 760 1500 6500 130 80 20 0 30 300 0 0 0 0 28 28 15 0 1200 14 180 0 2 TB142 18/07/2011 2445060 244506 002 2S 0 110 0 0 20 20 0 1500 150 0 0 500 3200 0 64 0 0 0 1700 12 220 0 0 TB179 30/11/2011 259651 259651 003 Retained onsite 0 80 0 0 20 50 70 3100 1200 0 0 8600 17000 170 0 0 490 0 3900 1900 530 25 130 TB118 17/08/2011 248124 248124 010 2N/2S/3 0 3700 2700 5000 410 50 30 190 70 400 2200 200 0 0 280 0 7 0 1700 6 1000 0 15 TB165 12/09/2011 250404 250404 002 3 0 910 150 350 0 18 60 500 110 1000 440 980 3500 0 1300 32 32 0 1900 360 1000 0 310 TB119 23/08/2011 248438 248438 003 3 0 2300 6400 20000 300 40 100 620 210 580 0 0 770 0 1600 0 96 0 1400 180 8100 0 150

Number of samples 185 185 185 185 185 185 185 185 185 185 185 185 185 185 185 185 185 185 185 185 185 185 185

Minimum value 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

Maximum value 400.00 28000.00 13000.00 56000.00 5100.00 3200.00 890.00 490000.00 510000.00 82000.00 3500000.00 35000.00 17000.00 200.00 1900.00 360.00 930.00 0.00 11000.00 1900.00 8100.00 25.00 1300.00 Second highest value 0.00 23000.00 8000.00 20000.00 3300.00 1100.00 590.00 100000.00 28000.00 13000.00 240000.00 15000.00 10000.00 170.00 1900.00 250.00 490.00 0.00 11000.00 990.00 1000.00 17.00 390.00 Range 0- 400 0- 28000 0- 13000 0- 56000 0- 5100 0- 3200 0- 890 0- 490000 0- 510000 0- 82000 0- 3500000 0- 35000 0- 17000 0- 200 0- 1900 0- 360 0- 930 0- 0 0- 11000 0- 1900 0- 8100 0- 25 0- 1300 Average concentration 2.16 1563.51 314.58 818.81 308.38 71.83 28.95 4163.36 3198.03 1092.43 21609.78 555.35 752.70 2.00 82.42 8.31 11.49 0.00 549.84 53.16 74.96 0.23 20.58 Number of exceedances 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 % above assessment criteria 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Assessment criteria NA NA NA NA NA NA NA NA NA 345026742.0 NA NA NA 20055923.0 3674600.0 1113.6 28905.7 NA 446782 215518944.7 35390.2 81.5000 2500.0 Surrogate Source of Hauxton SSAC Surrogate assessment Non Non (Pentachlorophe Hauxton Hauxton SSAC Hauxton Hauxton Hauxton criteria Volatile Non Volatile Non Volatile Volatile Non Volatile Non Volatile Non Volatile Non Volatile Non Volatile nol) Non Volatile Non Volatile Non Volatile SSAC (chlorobenzene) Hauxton SSAC Hauxton SSAC Not volatile Hauxton SSAC SSAC Hauxton SSAC SSAC SSAC

Hauxton Post-Remediation Human Health Risk Assessment

F.4. Groundwater DQRA Side, Base and Trial pit Validation Human Health DQRA

Hauxton Vertase Groundwater Monitoring data WSVs for residential

Exceedances of the guideline value

Phenoxy Acetic Electrical Phenoxy Acetic acid herbicide: Phenoxy Acetic acid 2,4,6- 2-Methyl-4,6- 4-Chloro-2- Bis (2- Coordinates Determinand pH Dimefox Ethofumesate Hempa Schradan Simazine Dicamba acid herbicide: Phenol Conductivity Dichlorprop herbicide: Mecoprop Trichlorophenol dinitrophenol methylphenol chloroethyl) ether Report MCPA Report Date Number Location x y Units µs/cm µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l Method Detection Limit 07/02/2012 265655 BH9 2000.00 7.10 <0.1 8.70 0.60 <0.1 <0.01 <0.1 <0.1 <0.1 18.00 <10 <10 <10 160.00 <50 01/03/2012 268922 BH9 2600.00 6.80 <0.1 6.60 6.00 2.60 0.06 0.60 <0.1 4.60 0.60 <10 <10 <10 140.00 <50 11/04/2012 273595 BH9 2600.00 7.30 <0.1 4.40 <0.1 <0.1 0.05 <0.1 <0.1 <0.1 <0.1 <10 <10 <10 <10 <30 11/05/2012 277619 BH9 3000.00 7.00 <0.1 6.40 9.50 3.90 0.06 0.20 <0.1 <0.1 18.00 <10 <10 <10 120.00 <50 18/06/2012 282520 BH9 3000.00 7.00 <0.1 8.40 <0.1 <0.1 <0.01 0.10 <0.1 0.20 14.00 <10 <10 <10 110.00 <30 07/02/2012 265655 VN3 2100.00 7.00 <0.1 11.00 6.00 2.50 1.60 1.70 0.20 2.90 23.00 <10 <10 <10 270.00 <50 01/03/2012 268922 VN3 2100.00 7.00 <0.1 3.40 15.00 3.10 0.93 3.30 <0.1 1.80 12.00 <10 <10 <10 100.00 <50 11/04/2012 273595 VN3 2200.00 7.40 <0.1 6.80 <0.1 3.80 0.77 2.50 <0.1 <0.1 <0.1 <10 <10 <10 59.00 <30 11/05/2012 277619 VN3 2100.00 7.10 <0.1 5.30 100.00 5.30 3.40 3.20 0.30 1.90 24.00 <10 <10 <10 150.00 <50 18/06/2012 282520 VN3 2300.00 7.10 <0.1 10.00 <0.1 <0.1 1.60 0.70 0.30 <0.1 27.00 <10 <10 <10 460.00 <30 07/02/2012 265655 BH11 530.00 7.40 <0.1 20.00 81.00 25.00 17.00 18.00 <0.1 1.70 2.10 <10 13.00 <10 32.00 <50 24/02/2012 269103 BH11 930.00 7.20 <0.1 <0.1 290.00 85.00 6.50 19.00 <0.1 <0.1 0.30 <10 <10 <10 <10 <50 11/04/2012 273595 BH11 900.00 7.50 <0.1 0.60 230.00 84.00 0.44 1.50 0.20 <0.1 0.20 <10 <10 <10 <10 <30 11/05/2012 277619 BH11 450.00 7.80 <0.1 19.00 180.00 18.00 45.00 23.00 1.50 19.00 18.00 <10 <10 <10 <10 <50 18/06/2012 282344 BH11 640.00 7.60 <0.1 1.00 370.00 15.00 2.50 16.00 0.30 72.00 1.20 <10 <10 <10 <10 <30 11/05/2012 277631 B21 1200.00 7.40 <0.1 <0.1 95.00 4.50 10.00 1.70 <0.1 1.30 0.30 <10 <10 <10 <10 <50 10/01/2012 262382 I6 1500.00 7.30 <10 1900.00 800.00 1000.00 830.00 61.00 22.00 330.00 170.00 68.00 190.00 120.00 550.00 <40 07/02/2012 265629 I6 1100.00 7.40 <0.1 61.00 66.00 25.00 62.00 8.00 2.20 <0.1 16.00 11.00 <10 32.00 400.00 <50 01/03/2012 268928 I6 1300.00 7.50 <0.1 38.00 120.00 83.00 38.00 45.00 1.70 <0.1 13.00 10.00 <10 <10 380.00 <50 12/05/2012 277629 I6 790.00 7.80 <0.1 220.00 300.00 270.00 13.00 21.00 0.20 9.30 0.90 <10 <10 <10 250.00 <50 18/06/2012 282340 I6 870.00 7.60 <0.1 24.00 520.00 180.00 14.00 3.90 1.50 2.80 10.00 <10 <10 24.00 360.00 <30 10/01/2012 262382 H7 1600.00 7.70 <10 85.00 21000.00 17000.00 48.00 3.10 8.50 100.00 10.00 <10 <10 <10 160.00 <40 01/03/2012 268928 H7 1400.00 7.40 <0.1 11.00 80.00 400.00 2.50 8.30 6.00 130.00 10.00 30.00 <10 <10 2700.00 <50 12/05/2012 277629 H7 1200.00 7.60 <0.1 290.00 2100.00 6.30 12.00 5.90 3.60 68.00 10.00 13.00 <10 <10 1200.00 <50 18/06/2012 282340 H7 1200.00 7.40 <0.1 8.90 630.00 5200.00 5.50 3.30 3.70 71.00 7.70 13.00 <10 <10 1300.00 <30 01/03/2012 268933 E14 1300.00 6.90 <0.1 0.70 35.00 17.00 0.24 0.10 <0.1 <0.1 0.90 <10 <10 <10 <10 <50 11/04/2012 273625 E14 1400.00 6.90 <0.1 0.30 160.00 1.30 0.05 0.20 <0.1 <0.1 0.60 <10 <10 <10 <10 <30 08/02/2012 265247 A18 800.00 7.00 <0.1 2.50 23.00 32.00 1.10 0.40 <0.1 <0.1 <0.1 <10 <10 <10 <10 <30 09/01/2012 262390 A18 850.00 7.40 <0.1 0.60 15.00 32.00 0.35 0.80 <0.1 0.10 0.20 <10 <30 <10 <10 <40 01/03/2012 268931 A18 820.00 7.10 <0.1 0.90 33.00 57.00 0.32 0.20 <0.1 <0.1 0.10 <10 <10 <10 <10 <50 11/04/2012 273400 A18 930.00 7.20 <0.1 1.80 34.00 85.00 0.30 0.50 <0.1 <0.1 0.30 <10 <10 <10 <10 <30 11/05/2012 277631 A18 980.00 7.50 <0.1 0.50 63.00 14.00 0.29 4.70 <0.1 4.80 1.30 <10 <10 <10 <10 <50 18/06/2012 282083 A18 1100.00 7.10 <0.1 1.20 150.00 53.00 0.44 1.40 0.20 5.30 1.40 <10 <10 <10 <10 <30 09/01/2012 262386 G21 910.00 7.30 <0.1 0.50 1.40 2.80 0.11 0.40 <0.1 1.20 0.90 <10 <30 <10 <10 <40 07/02/2012 265249 G21 880.00 7.00 <0.1 0.50 0.90 0.50 0.11 0.50 <0.1 0.40 0.80 <10 <10 <10 <10 <30 01/03/2012 268295 G21 920.00 7.10 <0.1 0.50 5.90 1.30 0.16 1.20 <0.1 6.60 0.40 <10 <10 <10 <10 <50 11/04/2012 273400 G21 900.00 7.10 <0.1 0.40 <0.1 <0.1 0.10 0.40 <0.1 <0.1 0.50 <10 <10 <10 <10 <30 11/05/2012 277631 G21 920.00 7.40 <0.1 1.20 2.20 0.50 0.17 1.40 0.30 8.20 4.70 <10 <10 <10 <10 <50 18/06/2012 282083 G21 940.00 7.10 <0.1 0.50 <0.1 <0.1 0.13 0.70 0.10 4.40 2.50 <10 <10 <10 <10 <30 07/02/2012 265249 I24 2000.00 11.70 <0.1 840.00 110.00 4.60 440.00 100.00 22.00 1600.00 580.00 880.00 540.00 34.00 35.00 <30 01/03/2012 268925 I24 1500.00 11.70 <0.1 290.00 110.00 4.00 150.00 63.00 27.00 460.00 230.00 700.00 430.00 20.00 30.00 <50 11/04/2012 273625 I24 1400.00 11.40 <0.1 56.00 430.00 3.80 54.00 35.00 17.00 400.00 190.00 530.00 140.00 17.00 38.00 <30 12/05/2012 277630 I24 2100.00 11.90 <0.1 550.00 110.00 0.70 510.00 16.00 12.00 230.00 120.00 370.00 34.00 <10 11.00 <50 18/06/2012 282079 I24 2100.00 11.90 <0.1 520.00 410.00 <0.1 660.00 8.70 3.40 45.00 27.00 630.00 320.00 23.00 26.00 <30 09/01/2012 262386 K21 1300.00 7.20 <0.1 0.80 5.00 7.40 1.10 2.40 <0.1 0.50 0.50 <10 <30 <10 <10 <40 07/02/2012 265249 K21 1200.00 7.00 <0.1 0.60 25.00 0.70 1.10 16.00 <0.1 0.50 2.90 <10 <10 <10 <10 <30 01/03/2012 268925 K21 1300.00 7.00 <0.1 0.20 49.00 3.10 0.51 4.40 <0.1 1.40 0.20 <10 <10 <10 <10 <50 11/04/2012 273625 K21 1400.00 6.90 <0.1 0.20 32.00 <0.1 0.09 7.70 <0.1 9.60 1.40 <10 <10 <10 <10 <30 12/05/2012 277630 K21 1300.00 7.30 <0.1 1.00 130.00 1.30 0.78 65.00 0.50 1.00 5.00 <10 <10 <10 <10 <50 18/06/2012 282079 K21 1400.00 7.00 <0.1 0.80 190.00 <0.1 1.00 22.00 1.90 4.80 19.00 <10 <10 <10 <10 <30 09/01/2012 262390 I18 1400.00 7.30 <0.1 2.60 53.00 120.00 0.65 10.00 <0.1 <0.1 0.30 <10 <30 <10 15.00 <40 07/02/2012 265276 I18 1400.00 6.90 <0.1 42.00 92.00 54.00 7.80 63.00 7.10 220.00 110.00 39.00 <10 40.00 30.00 <30 01/03/2012 268933 I18 1500.00 7.00 <0.1 65.00 77.00 78.00 9.50 100.00 7.20 58.00 110.00 50.00 <10 <10 40.00 <50 05/04/2012 273389 I18 1600.00 7.00 <0.1 66.00 360.00 470.00 16.00 4.40 2.50 0.70 29.00 14.00 <10 <10 30.00 <30 12/05/2012 277630 I18 1600.00 7.30 <0.1 80.00 540.00 150.00 13.00 2.30 2.60 0.90 30.00 14.00 <10 <10 28.00 <50 18/06/2012 282079 I18 1700.00 7.00 <0.1 42.00 1300.00 170.00 6.60 44.00 <0.1 8.90 0.20 19.00 <10 <10 39.00 <30 07/02/2012 265653 K5 SUMP 550.00 10.50 <0.1 200.00 200.00 110.00 120.00 14.00 6.20 170.00 73.00 83.00 98.00 <10 18.00 <30 02/03/2012 269085 K5 SUMP 550.00 10.10 <0.1 120.00 430.00 39.00 70.00 45.00 20.00 450.00 170.00 80.00 170.00 <10 30.00 <50 12/05/2012 277620 K5 SUMP 330.00 9.10 <0.1 59.00 110.00 25.00 56.00 16.00 2.40 45.00 21.00 <10 <10 <10 <10 <50 18/06/2012 282073 K5 SUMP 520.00 9.30 <0.1 32.00 180.00 <0.1 40.00 18.00 2.20 41.00 17.00 19.00 13.00 <10 <10 <10 02/03/2012 269085 K10 PUDDLE 500.00 10.20 <0.1 120.00 190.00 87.00 55.00 17.00 4.10 18.00 27.00 10.00 140.00 <10 <10 <50 12/05/2012 277620 K10 PUDDLE 350.00 9.10 <0.1 65.00 110.00 25.00 65.00 17.00 1.30 17.00 12.00 <10 <10 <10 <10 <50 18/06/2012 282073 K10 PUDDLE 430.00 8.80 <0.1 4.00 75.00 12.00 24.00 24.00 0.20 6.10 1.70 <10 <10 <10 <10 <30 02/03/2012 269085 F14 PUDDLE 380.00 9.60 <0.1 22.00 93.00 74.00 2.90 19.00 2.20 25.00 15.00 <10 20.00 <10 <10 <50 12/05/2012 277620 F14 PUDDLE 230.00 10.50 <0.1 24.00 140.00 81.00 3.60 5.30 2.70 86.00 25.00 <10 <10 <10 <10 <50

Number of samples 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 Minimum value 230.00 6.80 0.10 0.10 0.10 0.10 0.01 0.10 0.10 0.10 0.10 10.00 10.00 10.00 10.00 10.00 Maximum value 3000.00 11.90 10.00 1900.00 21000.00 17000.00 830.00 100.00 27.00 1600.00 580.00 880.00 540.00 120.00 2700.00 50.00 Second highest value 3000.00 11.90 10.00 840.00 2100.00 5200.00 660.00 100.00 22.00 460.00 230.00 700.00 430.00 40.00 1300.00 50.00 Range 230- 3000 6.8- 11.9 0.1- 10 0.1- 1900 0.1- 21000 0.1- 17000 0.01- 830 0.1- 100 0.1- 27 0.1- 1600 0.1- 580 10- 880 10- 540 10- 120 10- 2700 10- 50

Average concentration 1281.54 7.91 0.40 91.77 508.83 403.62 52.73 15.44 3.08 73.05 34.44 62.05 41.82 13.54 147.71 40.46

Number of exceedances 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

% above assessment criteria 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Assessment criteria ------1690000

Source of assessment criteria ------WSV

Hauxton GW assessment WSVs E_HVW SSAC/Hauxton waters 1/2 Hauxton Vertase Groundwater Monitoring data WSVs for residential

Exceedances of the guideline value

Cis-1,2- Tetrachloroethylen Coordinates Determinand 1,2-Dichlorobenzene 1,2-Dichloroethane Dichloroethylen Cyclohexanone Toluene Trichloroethylene Vinyl chloride monomer Xylene (Total) e Report e Report Date Number Location x y Units µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l Method Detection Limit 07/02/2012 265655 BH9 <1 <1 1.00 <10 <1 <1 <1 <1 <1 01/03/2012 268922 BH9 <1 <1 <1 <10 <1 <1 <1 <1 <1 11/04/2012 273595 BH9 <1 <1 <1 <10 <1 <1 <1 <1 <1 11/05/2012 277619 BH9 <1 <1 <1 <10 <1 <1 <1 <1 <1 18/06/2012 282520 BH9 <1 <1 <1 <10 <1 <1 <1 <1 <1 07/02/2012 265655 VN3 <1 <1 <1 <10 <1 <1 <1 <1 <1 01/03/2012 268922 VN3 <1 <1 <1 <10 <1 2.00 <1 <1 <1 11/04/2012 273595 VN3 <1 <1 <1 <10 <1 <1 <1 <1 <1 11/05/2012 277619 VN3 <1 <1 <1 <10 <1 <1 <1 <1 <1 18/06/2012 282520 VN3 <1 <1 2.00 <10 <1 <1 <1 <1 <1 07/02/2012 265655 BH11 <1 <1 <1 <10 <1 <1 <1 <1 <1 24/02/2012 269103 BH11 <1 <1 <1 <10 <10 <1 <1 <1 <1 11/04/2012 273595 BH11 <1 <1 <1 <10 <1 <1 <1 <1 <1 11/05/2012 277619 BH11 <1 <1 <1 <10 <1 <1 <1 <1 <1 18/06/2012 282344 BH11 <1 <1 <1 <10 <1 <1 <1 <1 <1 11/05/2012 277631 B21 <1 <1 <1 <10 <1 <1 <1 <1 <1 10/01/2012 262382 I6 <1 <1 1.00 <10 2.00 <1 <1 <1 <1 07/02/2012 265629 I6 <1 <1 <1 <10 <1 <1 <1 <1 <1 01/03/2012 268928 I6 <1 <1 1.00 <10 1.00 3.00 <1 <1 <1 12/05/2012 277629 I6 <1 <1 2.00 <10 1.00 <1 <1 <1 <1 18/06/2012 282340 I6 <1 <1 2.00 <10 2.00 <1 <1 1.00 <1 10/01/2012 262382 H7 <10 <10 610.00 <100 16000.00 21.00 900 50 <10 01/03/2012 268928 H7 <1 240.00 280.00 <10 3900.00 13.00 340 30 3.00 12/05/2012 277629 H7 <1 240.00 430.00 <10 5000.00 9.00 750 38 <1 18/06/2012 282340 H7 1.00 290.00 510.00 <10 14000.00 12.00 800 49 4.00 01/03/2012 268933 E14 <1 <1 2.00 <10 4.00 2.00 1.00 <1 <1 11/04/2012 273625 E14 <1 <1 2.00 <10 2.00 <1 <1 <1 <1 08/02/2012 265247 A18 <1 <1 <1 <10 3.00 <1 <1 <1 <1 09/01/2012 262390 A18 <1 <1 <1 <10 5.00 <1 <1 <1 <1 01/03/2012 268931 A18 <1 <1 <1 <10 2.00 2.00 2.00 <1 <1 11/04/2012 273400 A18 <1 <1 <1 <10 4.00 <1 3.00 <1 <1 11/05/2012 277631 A18 <1 <1 1.00 <10 20.00 <1 4.00 <1 <1 18/06/2012 282083 A18 <1 <1 2.00 <10 12.00 <1 <1 <1 <1 09/01/2012 262386 G21 <1 <1 <1 <10 4.00 <1 <1 <1 <1 07/02/2012 265249 G21 <1 <1 <1 <10 4.00 <1 <1 <1 <1 01/03/2012 268295 G21 <1 <1 <1 <10 3.00 <1 <1 <1 <1 11/04/2012 273400 G21 <1 <1 <1 <10 1.00 <1 <1 <1 <1 11/05/2012 277631 G21 <1 <1 <1 <10 4.00 <1 <1 <1 <1 18/06/2012 282083 G21 <1 <1 <1 <10 3.00 <1 <1 <1 <1 07/02/2012 265249 I24 3.00 <1 <1 <10 7.00 <1 2.00 <1 4.00 01/03/2012 268925 I24 <1 <1 <1 <10 6.00 <1 2.00 <1 1.00 11/04/2012 273625 I24 <1 <1 <1 <10 3.00 <1 1.00 <1 <1 12/05/2012 277630 I24 4.00 <1 <1 <10 6.00 <1 2.00 <1 3.00 18/06/2012 282079 I24 3.00 <1 <1 <10 6.00 <1 2.00 <1 <1 09/01/2012 262386 K21 <1 <1 <1 <10 <1 <1 1.00 <1 <1 07/02/2012 265249 K21 <1 <1 <1 <10 1.00 <1 1.00 <1 <1 01/03/2012 268925 K21 <1 <1 <1 <10 <1 <1 <1 <1 <1 11/04/2012 273625 K21 <1 <1 <1 <10 <1 <1 <1 <1 <1 12/05/2012 277630 K21 <1 <1 <1 <10 2.00 <1 1.00 <1 <1 18/06/2012 282079 K21 <1 <1 <1 <10 2.00 <1 1.00 <1 <1 09/01/2012 262390 I18 <1 <1 25.00 <10 3.00 <1 1.00 1.00 <1 07/02/2012 265276 I18 <1 <1 18.00 <10 5.00 <1 1.00 7.00 <1 01/03/2012 268933 I18 <1 <1 11.00 <10 3.00 2.00 <1 6.00 <1 05/04/2012 273389 I18 <1 <1 13.00 <10 3.00 <1 <1 4.00 <1 12/05/2012 277630 I18 1.00 <1 22.00 <10 10.00 <1 2.00 5.00 <1 18/06/2012 282079 I18 1.00 <1 25.00 <10 8.00 <1 2.00 5.00 <1 07/02/2012 265653 K5 SUMP <1 <1 <1 <10 2.00 <1 1.00 <1 <1 02/03/2012 269085 K5 SUMP <1 <1 <1 <10 16.00 <1 7.00 <1 <1 12/05/2012 277620 K5 SUMP <1 <1 <1 <10 <1 <1 <1 <1 <1 18/06/2012 282073 K5 SUMP <1 <1 <1 <10 <1 <1 <1 <1 <1 02/03/2012 269085 K10 PUDDLE <1 <1 <1 <10 <1 <1 <1 <1 <1 12/05/2012 277620 K10 PUDDLE <1 <1 <1 <10 <1 <1 <1 <1 <1 18/06/2012 282073 K10 PUDDLE <1 <1 <1 <10 <1 <1 <1 <1 <1 02/03/2012 269085 F14 PUDDLE <1 <1 <1 <10 <1 <1 <1 <1 <1 12/05/2012 277620 F14 PUDDLE <1 <1 <1 <10 <1 <1 4.00 <1 <1

Number of samples 65 65 65 65 65 65 65 65 65 Minimum value 1.00 1.00 1.00 10.00 1.00 1.00 1.00 1.00 1.00 Maximum value 10.00 290.00 610.00 100.00 16000.00 21.00 900.00 50.00 10.00 Second highest value 4.00 240.00 510.00 10.00 14000.00 13.00 800.00 49.00 4.00 Range 1- 10 1- 290 1- 610 10- 100 1- 16000 1- 21 1- 900 1- 50 1- 10

Average concentration 1.25 12.94 30.85 11.38 601.48 1.88 44.18 3.85 1.29

Number of exceedances 0 0 0 0 0 0 0 0 0

% above assessment criteria 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Assessment criteria 26000 750.0 11500 - 29500 590000 4250 60 4100

Source of assessment criteria WSV SSAC SSAC - SSAC SSAC SSAC SSAC WSV

Hauxton GW assessment WSVs E_HVW SSAC/Hauxton waters 2/2

Hauxton Post-Remediation Human Health Risk Assessment

F.5. Statistics Calculator Output

Client/client ref Project ref 5036769 Site ref Hauxton Data description Validation samples

Contaminant(s) 1,2-dichloroethane

Test scenario PlanningPlanning: is true mean lower than critical concentration (µ < Cc)? Date 20 September 2012 User details TM

Statistics Calculator (Version 2) Input data

This spreadsheet has been produced based on the document 'Guidance on Comparing Soil Contamination Data with a Critical Concentration (CIEH/CL:AIRE, 2008)'. Users of this spreadsheet should always refer to this guidance, the User Manual and to relevant guidance on UK legislation and policy, in order to understand how the procedure should be applied in an appropriate context.

ESI Ltd (ESI) do not promise that the spreadsheet will provide any particular facilities or functions. The user must ensure that the spreadsheet meets their needs and they remain solely responsible for the competent use of the spreadsheet. Users are entirely responsible for the consequences of any use of the spreadsheet, ESI do not provide any warranty about the fitness for purpose or performance of any part of the spreadsheet. We do not promise that the media will always be free from defects, computer viruses, software locks or other similar code or that the operation of the spreadsheet will be uninterrupted or error free. The user should carry out all necessary virus checks prior to installing on their computing system.

© ESI Ltd. 2011 Go to summary Project details FALSE FALSE 12 DCA 12 DCA BW User- User- User- validation Depth (m) Sample Easting Northing defined 1 defined 2 defined 3 ID Filter Filter

G11 BV <25 G8 BV 500 G11 SVE <5

G10 BV 78 G9 BV 44 G11 BV <5 G10 BV <5 2S G8 BV 900 G9 BV <5 2S G11 BV <5 2S H9 WALL 1000

H8 WALL 1700

H10 BV <25 H11 BV <25 H8 2N 460 BV H9 2N 45 BV H10 Trial 2100 I9 BV 17000 I11 SVS 77 I11 SVE <5 I11 BV 87 I10 Trial 5500 I9 37000 I10 BV 25 I11 BV <5 I10 SVE <5 I8 B BV 10 I8 BV 32 I9 trial 11000 sample in gault I8 Zone <5 2N BV I10 SV <5 I9 BV J10 SV <5 J10 BV J11 SV E 77

J11 BV <5 J10 BV 1300 J8 870 J9 trail 34 sample in gault J8 2 BV <5 J9 BV 2400 J10 200 J8 Zone <5 2N BV J8 BV <5 K10 490 K9 trial 85 sample in gault K10 BV 780 K9 BV <5 K10 BV L9 SV W 15

L10 BV 160 L9 trail 100 sample in gault L10 SV 1500 W L10B BV <5

L10 Trial <5 12 DCA 12 DCA BW User- User- User- validation Depth (m) Sample Easting Northing defined 1 defined 2 defined 3 ID Filter Filter

L9 BV <5 L10 0.5 <5 L9 0.5 <5 C19 2.0M

C20 5.5M

D18 2.5M

D19 1.0M

D20 4.9M

E19 SVE E19 BV E19 SVN

E19 SVS

E20 4.7M

F19 4.4M

E18 4.4M

F18 2.8M (CS)

F19 BV F19 SVE (CS) F19 SVN

F19 SVS

F20 3.9M

BHG11 <5 BHI5 <5 BHG10b <5 I6 SV BW 31

H6 SV <25 BW H7 SV <5 BW G8 SV <5 BW BHG9 <5 MARL H6 BV 35 BW BHG8 <5 I6 BV BW 1200

G9 BV 29 BW BHG9 <5 BENTON ITE H7 BV 520 BW G10 SV <25 BW G8 BWW <250

G10 BV 81 BW BHG9 <5 G8 BV <25 BW G9 SV <25 BW BHG12 <5 K5BWBV 110

BHJ5 <5 J6 SV <5 BW BHH6 <5 BHH7 <5 J6 BV 10 BW 12 DCA 12 DCA BW User- User- User- validation Depth (m) Sample Easting Northing defined 1 defined 2 defined 3 ID Filter Filter

K5BWSV <5

BHF14 <5 G12 <5 BWW BHF13 <5 BHK5 <5 K5 BWS <5 Client/client ref: 12 DCA 12 DCA BW Project ref: 5036769 Site ref: Hauxton validation Data description: Validation samples Contaminant(s): 1,2-dichloroethane Test scenario: Planning Date: 20 September 2012 User details: TM

Critical concentration, Cc 1110 1110

Notes

Full dataset size 55 33 0 0 0 0 0 0 0 0 0 0 0 0 Outliers present? No #NULL! Number of outliers temporarily 0 excluded Number removed by filter 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Sample size, n 55 33 0 0 0 0 0 0 0 0 0 0 0 0 Sample mean, x 1557.43636 67.9090909 No Data No Data No Data No Data No Data No Data No Data No Data No Data No Data No Data No Data Standard deviation, s 5605.60993 223.35361 Number of non-detects 24 25 0 0 0 0 0 0 0 0 0 0 0 0 Set non-detect values to: Half detection limit2 Half detection limit2 Half detection limit2 Half detection limit2 Half detection limit2 Half detection limit2 Half detection limit2 Half detection limit2 Half detection limit2 Half detection limit2 Half detection limit2 Half detection limit2 Half detection limit2 Half detection limit2 Distribution Non-normal Non-normal Statistical approach Auto: Chebychev3 Auto: Chebychev3 Auto 3 Auto 3 Auto 3 Auto 3 Auto 3 Auto 3 Auto 3 Auto 3 Auto 3 Auto 3 Auto 3 Auto 3

Test scenario: Planning: is true mean lower than critical concentration (µ < Cc)? Evidence level required: 95% Use Log-Normal distribution to test for outliers

t statistic, t0 (or k0) 0.591956437 -26.80214796 Upper confidence limit 4852.15498 237.386887 (on true mean concentration, µ)

Evidence level 0% 100%

Base decision on: evidence 2level evidence 2level 2 2 2 2 2 2 2 2 2 2 2 2 Result µ ≥ Cc µ < Cc

Select dataset Y Y Y Y Y Y Y Y Y Y Y Y Y Y

Back to data Go to outlier test Go to normality test Show individual summary

0% 100%

Hauxton Post-Remediation Human Health Risk Assessment

Appendix G. Lines of Evidence

Hauxton Post-Remediation Human Health Risk Assessment

G.1. CLEA modelling – Further DQRA

CLEA v1.06 - soils Resi with run 2 - adapted vap perm

CLEA Software Version 1.06 Page 1 of 5 Report generated 21/09/2012

Report title Hauxton

Created by TM at Atkins

BASIC SETTINGS

Land Use Residential with homegrown produce

Building Small terraced house Receptor Female (res) Start age class 1 End age class 6 Exposure Duration 6 years Soil Sandy clay loam

Exposure Pathways Direct soil and dust ingestion  Dermal contact with indoor dust  Inhalation of indoor dust  Consumption of homegrown produce  Dermal contact with soil  Inhalation of soil dust  Soil attached to homegrown produce  Inhalation of indoor vapour  Inhalation of outdoor vapour  CLEA v1.06 - soils Resi with run 2 - adapted vap perm

CLEA Software Version 1.06 Report generated21-Sep-12 Page 2 of 5

Land Use Residential with homegrown produce

Exposure Frequencies (days yr -1 ) Occupation Periods (hr day -1 ) Soil to skin adherence factors (mg cm 2) ) -1 Age Class Direct soil ingestion soil Direct of Consumption produce homegrown with contact Dermal dust indoor with contact Dermal soil and dust of Inhalation outdoor vapour, Indoors Outdoors Indoor Outdoor rate ingestion soil Direct day (g Inhalation of dust and and dust of Inhalation indoor vapour, 1 180 180 180 180 365 365 23.0 1.0 0.06 1.00 0.10 2 365 365 365 365 365 365 23.0 1.0 0.06 1.00 0.10 3 365 365 365 365 365 365 23.0 1.0 0.06 1.00 0.10 4 365 365 365 365 365 365 23.0 1.0 0.06 1.00 0.10 5 365 365 365 365 365 365 19.0 1.0 0.06 1.00 0.10 6 365 365 365 365 365 365 19.0 1.0 0.06 1.00 0.10 7 0 0 0 0 0 0 0.0 0.0 0.00 0.00 0.00 8 0 0 0 0 0 0 0.0 0.0 0.00 0.00 0.00 9 0 0 0 0 0 0 0.0 0.0 0.00 0.00 0.00 10 0 0 0 0 0 0 0.0 0.0 0.00 0.00 0.00 11 0 0 0 0 0 0 0.0 0.0 0.00 0.00 0.00 12 0 0 0 0 0 0 0.0 0.0 0.00 0.00 0.00 13 0 0 0 0 0 0 0.0 0.0 0.00 0.00 0.00 14 0 0 0 0 0 0 0.0 0.0 0.00 0.00 0.00 15 0 0 0 0 0 0 0.0 0.0 0.00 0.00 0.00 16 0 0 0 0 0 0 0.0 0.0 0.00 0.00 0.00 17 0 0 0 0 0 0 0.0 0.0 0.00 0.00 0.00 18 0 0 0 0 0 0 0.0 0.0 0.00 0.00 0.00 CLEA v1.06 - soils Resi with run 2 - adapted vap perm

CLEA Software Version 1.06 Report generated 21-Sep-12 Page 3 of 5

Receptor Female (res)

Max exposed skin factor Consumption rates (g FW kg -1 BW day -1 ) ) -2 ) -2 m 2 m 2 ) -1 ) day

Age Class 2 3 Total skin area (m Outdoor (m Indoor (m Body weight (kg) weight Body (m) height Body rate Inhalation (m vegetables Green vegetables Root vegetables Tuber fruit Herbaceous fruit Shrub fruit Tree 1 5.60 0.7 8.5 0.32 0.26 3.43E-01 7.12 10.69 16.03 1.83 2.23 3.82 2 9.80 0.8 13.3 0.33 0.26 4.84E-01 6.85 3.30 5.46 3.96 0.54 11.96 3 12.70 0.9 12.7 0.32 0.25 5.82E-01 6.85 3.30 5.46 3.96 0.54 11.96 4 15.10 0.9 12.2 0.35 0.28 6.36E-01 6.85 3.30 5.46 3.96 0.54 11.96 5 16.90 1.0 12.2 0.35 0.28 7.04E-01 3.74 1.77 3.38 1.85 0.16 4.26 6 19.70 1.1 12.2 0.33 0.26 7.94E-01 3.74 1.77 3.38 1.85 0.16 4.26 7 22.10 1.2 12.4 0.22 0.15 8.73E-01 3.74 1.77 3.38 1.85 0.16 4.26 8 25.30 1.2 12.4 0.22 0.15 9.36E-01 3.74 1.77 3.38 1.85 0.16 4.26 9 27.50 1.3 12.4 0.22 0.15 1.01E+00 3.74 1.77 3.38 1.85 0.16 4.26 10 31.40 1.3 12.4 0.22 0.15 1.08E+00 3.74 1.77 3.38 1.85 0.16 4.26 11 35.70 1.4 12.4 0.22 0.14 1.19E+00 3.74 1.77 3.38 1.85 0.16 4.26 12 41.30 1.4 13.4 0.22 0.14 1.29E+00 3.74 1.77 3.38 1.85 0.16 4.26 13 47.20 1.5 13.4 0.22 0.14 1.42E+00 3.74 1.77 3.38 1.85 0.16 4.26 14 51.20 1.6 13.4 0.22 0.14 1.52E+00 3.74 1.77 3.38 1.85 0.16 4.26 15 56.70 1.6 13.4 0.21 0.14 1.60E+00 3.74 1.77 3.38 1.85 0.16 4.26 16 59.00 1.6 13.4 0.21 0.14 1.63E+00 3.74 1.77 3.38 1.85 0.16 4.26 17 70.00 1.6 14.8 0.33 0.27 1.78E+00 2.94 1.40 1.79 1.61 0.22 2.97 18 70.90 1.6 12.0 0.33 0.27 1.80E+00 2.94 1.40 1.79 1.61 0.22 2.97 CLEA v1.06 - soils Resi with run 2 - adapted vap perm

CLEA Software Version 1.06 Report generated21-Sep-12 Page 4 of 5

Building Small terraced house Soil Sandy clay loam

Building footprint (m 2) 2.80E+01 Porosity, Total (cm 3 cm -3 ) 5.30E-01 Living space air exchange rate (hr -1 ) 5.00E-01 Porosity, Air-Filled (cm 3 cm -3 ) 1.60E-01 Living space height (above ground, m) 4.80E+00 Porosity, Water-Filled (cm 3 cm -3 ) 3.70E-01

Living space height (below ground, m) 0.00E+00 Residual soil water content (cm 3 cm -3 ) 1.75E-01

Pressure difference (soil to enclosed space, Pa) 3.10E+00 Saturated hydraulic conductivity (cm s -1 ) 2.20E-06 Foundation thickness (m) 1.50E-01 van Genuchten shape parameter m (dimensionless) 3.10E-01 Bulk density (g cm -3 ) 1.80E+00 Floor crack area (cm 2) 4.23E+02

Dust loading factor ( µg m -3 ) 5.00E+01 Threshold value of wind speed at 10m (m s -1 ) 7.20E+00

Empirical function (F x) for dust model (dimensionless) 1.22E+00 Ambient soil temperature (K) 2.83E+02

Soil pH 7.00E+00 Soil Organic Matter content (%) 6.00E+00 Fraction of organic carbon (g g -1 ) 3.48E-02

Effective total fluid saturation (unitless) 5.49E-01 Intrinsic soil permeability (cm 2) 2.94E-11 Relative soil air permeability (unitless) 6.09E-01 Effective air permeability (cm 2) 1.79E-11 CLEA v1.06 - soils Resi with run 2 - adapted vap perm

CLEA Software Version 1.06 Report generated21-Sep-12 Page 5 of 5

Soil - Vapour Model Air Dispersion Model

Depth to top of source (no building) (cm) 500 Mean annual windspeed at 10m (m s -1 ) 5.00 Depth to top of source (beneath building) (cm) 500 Air dispersion factor at height of 0.8m * 2500.00 Default soil gas ingress rate? No Air dispersion factor at height of 1.6m * 0.00

Soil gas ingress rate (cm 3 s -1 ) 8.40E-03 Fraction of site cover (m 2 m -2 ) 0.75

Building ventilation rate (cm 3 s -1 ) 1.87E+04 * Air dispersion factor in g m -2 s -1 per kg m -3 Averaging time surface emissions (yr) 6 Finite vapour source model? No Thickness of contaminated layer (cm) 200

Dry weight conversion Soil - Plant Model factor Homegrown fraction Soil loading Preparation Average High factor correction factor

g DW g -1 FW dimensionless g g -1 DW dimensionless Green vegetables 0.096 0.05 0.33 1.00E-03 2.00E-01 Root vegetables 0.103 0.06 0.40 1.00E-03 1.00E+00 Tuber vegetables 0.210 0.02 0.13 1.00E-03 1.00E+00 Herbaceous fruit 0.058 0.06 0.40 1.00E-03 6.00E-01 Shrub fruit 0.166 0.09 0.60 1.00E-03 6.00E-01 Tree fruit 0.157 0.04 0.27 1.00E-03 6.00E-01

Gardener type Average CLEA v1.06 - soils Resi with run 2 - adapted vap perm

CLEA Software Version 1.06 Page 1 of 11 Report generated 21-Sep-12

Report title Hauxton

Created by TM at Atkins

RESULTS CLEA v1.06 - soils Resi with run 2 - adapted vap perm

CLEA Software Version 1.06 Report generated 21-Sep-12 Page 2 of 11

Assessment Criterion (mg kg -1 ) Ratio of ADE to HCV 50% rule? Saturation Limit (mg kg -1 ) oral inhalation combined oral inhalation combined Oral Inhal 1 Chlorobenzene (mono) - Feb 2011 NR 1.45E+04 1.45E+04 0.00 1.00 1.00 3.47E+03 (sol) Yes No 2 1,2-dichloroethane NR 3.91E+00 3.91E+00 0.00 1.00 1.00 7.83E+03 (sol) No No 3 Vinyl chloride NR 2.47E-01 2.47E-01 0.00 1.00 1.00 2.34E+03 (sol) No No 4 Cis 1,2 Dichloroethene -EIC Sept 20091.01E+02 NR NR 1.00 NR NR 1.23E+04 (sol) No No 5 Tetrachloroethene NR 1.86E+03 1.86E+03 0.00 1.00 1.00 2.16E+03 (sol) No No 6 Toluene - EA March 2009 Atkins NR 8.39E+05 8.39E+05 0.00 1.00 1.00 4.31E+03 (vap) No No 7 Trichloroethene NR 1.36E+02 1.36E+02 0.00 1.00 1.00 7.03E+03 (vap) No No 8 Benzene - EA March 2009 Atkins NR 2.71E+02 2.71E+02 0.00 1.00 1.00 4.57E+03 (sol) No No 9 Selenium NR NR NR 0.00 NR NR NR Yes No 10 Phenol - EA July 2009 Atkins NR 2.12E+04 2.12E+04 0.00 1.00 1.00 1.71E+05 (vap) No No 11 Pentachlorophenol (inhal only) NR 3.67E+05 NR NR 1.00 NR 1.61E+03 (vap) No No 12 o-xylene - EA March 2009 Atkins NR 8.79E+04 8.79E+04 0.00 1.00 1.00 2.61E+03 (sol) No No 13 m-xylene - EA March 2009 Atkins NR 8.27E+04 8.27E+04 0.00 1.00 1.00 3.44E+03 (vap) No No 14 p-xylene - EA March 2009 Atkins NR 7.90E+04 7.90E+04 0.00 1.00 1.00 3.15E+03 (sol) No No 15 16 17 18 19 20 CLEA v1.06 - soils Resi with run 2 - adapted vap perm

CLEA Software Version 1.06 Report generated 21-Sep-12 Page 3 of 11

Assessment Criterion (mg kg -1 ) Ratio of ADE to HCV 50% rule? Saturation Limit (mg kg -1 ) oral inhalation combined oral inhalation combined Oral Inhal 21 22 23 24 25 26 27 28 29 30 CLEA v1.06 - soils Resi with run 2 - adapted vap perm

CLEA Software Version 1.06 Report generated 21-Sep-12 Page 4 of 11

Soil Distribution Media Concentrations Sorbed Dissolved Vapour Total Soil gas Soil Indoor Dust Outdoor dust at 0.8m Outdoor dust at 1.6m Indoor Vapour Outdoor vapour at 0.8m Outdoor vapour at 1.6m Green vegetables Root vegetables Tuber vegetables Herbaceous fruit Shrub fruit Tree fruit

%%%% mg kg -1 mg m -3 mg kg -1 mg m -3 mg m -3 mg m -3 mg m -3 mg m -3 mg kg -1 FW mg kg -1 FW mg kg -1 FW mg kg -1 FW mg kg -1 FW mg kg -1 FW 1 Chlorobenzene (mono) - Feb 2011 97.6 2.3 0.1 100.0 1.45E+04 1.35E+05 NA NA NA 1.48E-01 6.60E-04 0.00E+00 NA NA NA NA NA NA 2 1,2-dichloroethane 77.0 22.8 0.2 100.0 3.91E+00 1.03E+02 NA NA NA 1.30E-04 5.96E-07 0.00E+00 NA NA NA NA NA NA 3 Vinyl chloride 68.0 24.2 7.8 100.0 2.47E-01 2.18E+02 NA NA NA 3.24E-04 1.54E-06 0.00E+00 NA NA NA NA NA NA 4 Cis 1,2 Dichloroethene -EIC Sept 200987.0 12.6 0.4 100.0 1.01E+02 4.61E+03 NA NA NA 5.85E-03 2.69E-05 0.00E+00 NA NA NA NA NA NA 5 Tetrachloroethene 97.6 2.1 0.3 100.0 1.86E+03 6.13E+04 NA NA NA 6.36E-02 2.79E-04 0.00E+00 NA NA NA NA NA NA 6 Toluene - EA March 2009 Atkins 97.1 2.8 0.1 100.0 8.39E+05 1.32E+07 NA NA NA 1.48E+00 6.60E-02 0.00E+00 NA NA NA NA NA NA 7 Trichloroethene 95.7 4.0 0.3 100.0 1.36E+02 4.96E+03 NA NA NA 5.62E-03 2.52E-05 0.00E+00 NA NA NA NA NA NA 8 Benzene - EA March 2009 Atkins 91.6 8.0 0.4 100.0 2.71E+02 1.22E+04 NA NA NA 1.51E-03 6.91E-05 0.00E+00 NA NA NA NA NA NA 9 Selenium 0.0 0.0 0.0 0.0 0.00E+00 NR NA NA NA 0.00E+00 0.00E+00 0.00E+00 NA NA NA NA NA NA 10 Phenol - EA July 2009 Atkins 93.4 6.6 0.0 100.0 2.12E+04 5.70E+01 NA NA NA 8.19E-03 4.54E-05 0.00E+00 NA NA NA NA NA NA 11 Pentachlorophenol (inhal only) 99.9 0.1 0.0 100.0 3.67E+05 6.27E+00 NA NA NA 8.95E-05 4.96E-06 0.00E+00 NA NA NA NA NA NA 12 o-xylene - EA March 2009 Atkins 98.6 1.4 0.1 100.0 8.79E+04 5.37E+05 NA NA NA 5.56E-02 2.43E-03 0.00E+00 NA NA NA NA NA NA 13 m-xylene - EA March 2009 Atkins 98.8 1.2 0.1 100.0 8.27E+04 5.37E+05 NA NA NA 5.56E-02 2.43E-03 0.00E+00 NA NA NA NA NA NA 14 p-xylene - EA March 2009 Atkins 98.6 1.3 0.1 100.0 7.90E+04 5.36E+05 NA NA NA 5.56E-02 2.43E-03 0.00E+00 NA NA NA NA NA NA 15 16 17 18 19 20 CLEA v1.06 - soils Resi with run 2 - adapted vap perm

CLEA Software Version 1.06 Report generated 21-Sep-12 Page 5 of 11

Soil Distribution Media Concentrations Sorbed Dissolved Vapour Total Soil gas Soil Indoor Dust Outdoor dust at 0.8m Outdoor dust at 1.6m Indoor Vapour Outdoor vapour at 0.8m Outdoor vapour at 1.6m Green vegetables Root vegetables Tuber vegetables Herbaceous fruit Shrub fruit Tree fruit

%%%% mg kg -1 mg m -3 mg kg -1 mg m -3 mg m -3 mg m -3 mg m -3 mg m -3 mg kg -1 FW mg kg -1 FW mg kg -1 FW mg kg -1 FW mg kg -1 FW mg kg -1 FW 21 22 23 24 25 26 27 28 29 30 CLEA v1.06 - soils Resi with run 2 - adapted vap perm CLEA v1.06 - soils Resi with run 2 - adapted vap perm

CLEA Software Version 1.06 Report generated 21-Sep-12 Page 6 of 11

Average Daily Exposure (mg kg -1 bw day -1 ) Distribution by Pathway (%) Direct soil ingestion Direct soil of Consumption produce homegrown attachedand soil contactDermal with dust and soil of Inhalation dust of Inhalation vapour (oral) Background Background (inhalation) ingestion Direct soil of Consumption produce homegrown attachedand soil contactDermal with dust and soil of Inhalation dust of Inhalation vapour (indoor) of Inhalation vapour (outdoor) (oral) Background Background (inhalation) 1 Chlorobenzene (mono) - Feb 2011 0.00E+00 0.00E+00 0.00E+00 0.00E+00 1.37E-01 3.40E-02 5.58E-03 0.00 0.00 0.00 0.00 96.08 0.02 0.00 3.90 2 1,2-dichloroethane 0.00E+00 0.00E+00 0.00E+00 0.00E+00 1.20E-04 0.00E+00 0.00E+00 0.00 0.00 0.00 0.00 99.98 0.02 0.00 0.00 3 Vinyl chloride 0.00E+00 0.00E+00 0.00E+00 0.00E+00 3.00E-04 0.00E+00 0.00E+00 0.00 0.00 0.00 0.00 99.98 0.02 0.00 0.00 4 Cis 1,2 Dichloroethene -EIC Sept 20090.00E+00 0.00E+00 0.00E+00 0.00E+00 5.41E-03 2.25E-04 3.64E-04 0.00 0.00 0.00 0.00 90.17 0.02 9.81 0.00 5 Tetrachloroethene 0.00E+00 0.00E+00 0.00E+00 0.00E+00 5.89E-02 4.73E-04 1.21E-02 0.00 0.00 0.00 0.00 82.91 0.02 0.00 17.07 6 Toluene - EA March 2009 Atkins 0.00E+00 0.00E+00 0.00E+00 0.00E+00 1.37E+00 5.63E-04 3.15E-02 0.00 0.00 0.00 0.00 97.55 0.20 0.00 2.25 7 Trichloroethene 0.00E+00 0.00E+00 0.00E+00 0.00E+00 5.20E-03 0.00E+00 0.00E+00 0.00 0.00 0.00 0.00 99.98 0.02 0.00 0.00 8 Benzene - EA March 2009 Atkins 0.00E+00 0.00E+00 0.00E+00 0.00E+00 1.40E-03 0.00E+00 0.00E+00 0.00 0.00 0.00 0.00 99.79 0.21 0.00 0.00 9 Selenium 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 1.97E-03 3.64E-06 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 10 Phenol - EA July 2009 Atkins 0.00E+00 0.00E+00 0.00E+00 0.00E+00 7.58E-03 1.97E-02 2.42E-03 0.00 0.00 0.00 0.00 75.73 0.02 0.00 24.25 11 Pentachlorophenol (inhal only) 0.00E+00 0.00E+00 0.00E+00 0.00E+00 8.30E-05 1.13E-05 0.00E+00 0.00 0.00 0.00 0.00 99.75 0.25 0.00 0.00 12 o-xylene - EA March 2009 Atkins 0.00E+00 0.00E+00 0.00E+00 0.00E+00 5.15E-02 6.19E-04 8.49E-03 0.00 0.00 0.00 0.00 85.69 0.17 0.00 14.14 13 m-xylene - EA March 2009 Atkins 0.00E+00 0.00E+00 0.00E+00 0.00E+00 5.15E-02 6.19E-04 8.49E-03 0.00 0.00 0.00 0.00 85.69 0.17 0.00 14.14 14 p-xylene - EA March 2009 Atkins 0.00E+00 0.00E+00 0.00E+00 0.00E+00 5.15E-02 6.19E-04 8.49E-03 0.00 0.00 0.00 0.00 85.69 0.17 0.00 14.14 15 16 17 18 19 20 CLEA v1.06 - soils Resi with run 2 - adapted vap perm

CLEA Software Version 1.06 Report generated 21-Sep-12 Page 7 of 11

Average Daily Exposure (mg kg -1 bw day -1 ) Distribution by Pathway (%) Direct soil ingestion Direct soil of Consumption produce homegrown attachedand soil contactDermal with dust and soil of Inhalation dust of Inhalation vapour (oral) Background Background (inhalation) ingestion Direct soil of Consumption produce homegrown contactDermal with dust and soil of Inhalation dust of Inhalation vapour (indoor) of Inhalation vapour (outdoor) (oral) Background Background (inhalation) 21 22 23 24 25 26 27 28 29 30 CLEA v1.06 - soils Resi with run 2 - adapted vap perm

CLEA Software Version 1.06 Report generated 21-Sep-12 Page 8 of 11 ) ) -1 -1 ) ) -3 -1 g 3 cm 3 ) ) BW day BW day -1 -1 (dimensionless) (cm ) ) -1 -1 -1 -1 oc ow ) (cm s s 2 2 DW) aw g g kg g day g day g g kg -1 µ µ µ µ Dermal Absorption Fraction Absorption Dermal (dimensionless) dust via bioavailability Relative (unitless) inhalation Coefficient ofWaterCoefficient in Diffusion (m Oral Health Criteria Value OralValue Criteria Health ( IntakeOral Mean Daily ( Intake Mean Daily Inhalation ( Air-water partition coefficient (K ofAir Coefficient in Diffusion (m K log K log Soil-to-dust transport factor (g g to Sub-surface air soil indoor correction factor (dimensionless) soil via bioavailability Relative (unitless) ingestion Inhalation Health Criteria Value Value Criteria Health Inhalation ( 1 Chlorobenzene (mono) - Feb 2011 TDI 85.7 TDI 142.86 604 92 8.31E-02 7.57E-06 5.92E-10 2.4 2.84 0.1 0.5 1 1 1 2 1,2-dichloroethane ID 0.12 ID 0.12 NR NR 2.38E-02 8.60E-06 6.74E-10 1.3 1.48 0.1 0.5 1 1 1 3 Vinyl chloride ID 0.014 ID 0.3 NR NR 7.47E-01 1.11E-05 8.34E-10 1.22 1.38 0.1 0.5 1 1 1 4 Cis 1,2 Dichloroethene -EIC Sept 2009TDI 6 NR 0 4 6 7.46E-02 9.02E-06 7.08E-10 1.61 1.86 0.1 0.5 1 1 1 5 Tetrachloroethene TDI 14 TDI 71 8.4 200 3.16E-01 7.10E-06 5.61E-10 2.43 2.88 0.1 0.5 1 1 1 6 Toluene - EA March 2009 Atkins TDI 223 TDI 1400 10 520 1.15E-01 7.78E-06 5.88E-10 2.31 2.73 0.1 0.5 10 1 1 7 Trichloroethene ID 5.2 ID 5.2 NR NR 1.87E-01 7.91E-06 6.23E-10 2.15 2.53 0.1 0.5 1 1 1 8 Benzene - EA March 2009 Atkins ID 0.29 ID 1.4 NR NR 1.16E-01 8.77E-06 6.64E-10 1.83 2.13 0.1 0.5 10 1 1 9 Selenium TDI 6.4 NR 0 35 0.06 NR NR NR NR NR 0 0.5 1 1 1 10 Phenol - EA July 2009 Atkins TDI 700 TDI 10 350 40 8.35E-06 7.90E-06 6.36E-10 1.92 1.48 0.3 0.5 1 1 1 11 Pentachlorophenol (inhal only) NR 0 ID 0.083 0.2 NR 5.55E-06 5.17E-06 4.21E-10 3.97 5.07 0.001 0.5 10 1 1 12 o-xylene - EA March 2009 Atkins TDI 180 TDI 60 11 140 9.20E-02 7.01E-06 5.31E-10 2.63 3.12 0.1 0.5 10 1 1 13 m-xylene - EA March 2009 Atkins TDI 180 TDI 60 11 140 1.12E-01 7.03E-06 5.31E-10 2.69 3.2 0.1 0.5 10 1 1 14 p-xylene - EA March 2009 Atkins TDI 180 TDI 60 11 140 1.07E-01 7.04E-06 5.31E-10 2.65 3.15 0.1 0.5 10 1 1 15 16 17 18 19 20 CLEA v1.06 - soils Resi with run 2 - adapted vap perm

CLEA Software Version 1.06 Report generated 21-Sep-12 Page 9 of 11 ) ) -1 -1 ) ) -3 -1 g 3 cm 3 ) ) BW day BW day -1 -1 (dimensionless) (cm ) ) -1 -1 -1 -1 oc ow ) (cm s s 2 2 DW) aw g g day g day g g kg g g kg -1 µ µ µ µ Oral Mean Daily IntakeOral Mean Daily ( Intake Mean Daily Inhalation ( ofWaterCoefficient in Diffusion (m Soil-to-dust transport factor (g g to Sub-surface air soil indoor correction factor (dimensionless) soil via bioavailability Relative (unitless) ingestion dust via bioavailability Relative (unitless) inhalation Oral Health Criteria Value OralValue Criteria Health ( Air-water partition coefficient (K ofAir Coefficient in Diffusion (m Inhalation Health Criteria Value Value Criteria Health Inhalation ( log K log K log Fraction Absorption Dermal (dimensionless) 21 22 23 24 25 26 27 28 29 30 CLEA v1.06 - soils Resi with run 2 - adapted vap perm

CLEA Software Version 1.06 Report generated 21-Sep-12 Page 10 of 11 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 ) -1 DW soil) -1 ) plant DW plant or FW basis -1 -1 g 3 DW soil) DW soil) DW soil) DW soil) DW soil) -1 -1 -1 -1 -1 Soil-to-water Soil-to-water partition coefficient (cm pressure Vapour (Pa) (mgWater L solubility concentration factorSoil-to-plant for green (mgvegetables g DW plant or FW over basis mg g concentration factorSoil-to-plant for root vegetables (mg g DW plant or FW over basis mg g concentration factorSoil-to-plant for tuber vegetables (mg g DW plant or FW over basis mg g concentration factorSoil-to-plant for fruitherbaceous (mg g DW plant or FW over basis mg g concentration factorSoil-to-plant for shrub fruit (mg g over mg g concentration factorSoil-to-plant for tree fruit (mg g DW plant or FW over basis mg g 1 Chlorobenzene (mono) - Feb 20118.74E+00 6.73E+02 3.87E+02 model model model model model model 2 1,2-dichloroethane 6.94E-01 4.92E+03 8.68E+03 model model model model model model 3 Vinyl chloride 5.78E-01 2.20E+05 2.76E+03 model model model model model model 4 Cis 1,2 Dichloroethene -EIC Sept1.42E+00 2009 1.37E+04 7.55E+03 model model model model model model 5 Tetrachloroethene 9.37E+00 1.01E+03 2.25E+02 model model model model model model 6 Toluene - EA March 2009 Atkins 7.11E+00 1.73E+03 5.90E+02 model model model model model model 7 Trichloroethene 4.92E+00 4.58E+03 1.37E+03 model model model model model model 8 Benzene - EA March 2009 Atkins 2.35E+00 6.24E+03 1.78E+03 model model model model model model 9 Selenium 5.00E+01 NR 2.17E+06 0.0108 fw 0.00364 fw 0.00083 fw 0.00271 fw 0.003 fw 0.003 fw 10 Phenol - EA July 2009 Atkins 2.89E+00 1.15E+01 8.41E+04 model model model model model model 11 Pentachlorophenol (inhal only) 3.25E+02 2.43E-04 1.40E+01 model model model model model model 12 o-xylene - EA March 2009 Atkins 1.48E+01 3.86E+02 1.73E+02 model model model model model model 13 m-xylene - EA March 2009 Atkins 1.70E+01 4.95E+02 2.00E+02 model model model model model model 14 p-xylene - EA March 2009 Atkins 1.55E+01 4.75E+02 2.00E+02 model model model model model model 15 16 17 18 19 20 CLEA v1.06 - soils Resi with run 2 - adapted vap perm

CLEA Software Version 1.06 Report generated 21-Sep-12 Page 11 of 11 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 ) -1 DW soil) -1 ) plant DW plant or FW basis -1 -1 g 3 DW soil) DW soil) DW soil) DW soil) DW soil) -1 -1 -1 -1 -1 Soil-to-water Soil-to-water partition coefficient (cm pressure Vapour (Pa) (mgWater L solubility concentration factorSoil-to-plant for green (mgvegetables g DW plant or FW over basis mg g concentration factorSoil-to-plant for root vegetables (mg g DW plant or FW over basis mg g concentration factorSoil-to-plant for tuber vegetables (mg g DW plant or FW over basis mg g concentration factorSoil-to-plant for fruitherbaceous (mg g DW plant or FW over basis mg g concentration factorSoil-to-plant for shrub fruit (mg g over mg g concentration factorSoil-to-plant for tree fruit (mg g DW plant or FW over basis mg g 21 22 23 24 25 26 27 28 29 30

Hauxton Post-Remediation Human Health Risk Assessment

G.2. Statistical Calculator Output – Further DQRA

Client/client ref Project ref 5036769 Site ref Hauxton Data description Validation samples

Contaminant(s) 1,2-dichloroethane

Test scenario PlanningPlanning: is true mean lower than critical concentration (µ < Cc)? Date 20 September 2012 User details TM

Statistics Calculator (Version 2) Input data

This spreadsheet has been produced based on the document 'Guidance on Comparing Soil Contamination Data with a Critical Concentration (CIEH/CL:AIRE, 2008)'. Users of this spreadsheet should always refer to this guidance, the User Manual and to relevant guidance on UK legislation and policy, in order to understand how the procedure should be applied in an appropriate context.

ESI Ltd (ESI) do not promise that the spreadsheet will provide any particular facilities or functions. The user must ensure that the spreadsheet meets their needs and they remain solely responsible for the competent use of the spreadsheet. Users are entirely responsible for the consequences of any use of the spreadsheet, ESI do not provide any warranty about the fitness for purpose or performance of any part of the spreadsheet. We do not promise that the media will always be free from defects, computer viruses, software locks or other similar code or that the operation of the spreadsheet will be uninterrupted or error free. The user should carry out all necessary virus checks prior to installing on their computing system.

© ESI Ltd. 2011 Go to summary Project details FALSE FALSE 12 DCA 12 DCA BW User- User- User- validation Depth (m) Sample Easting Northing defined 1 defined 2 defined 3 ID Filter Filter

G11 BV <25 G8 BV 500 G11 SVE <5

G10 BV 78 G9 BV 44 G11 BV <5 G10 BV <5 2S G8 BV 900 G9 BV <5 2S G11 BV <5 2S H9 WALL 1000

H8 WALL 1700

H10 BV <25 H11 BV <25 H8 2N 460 BV H9 2N 45 BV H10 Trial 2100 I9 BV 17000 I11 SVS 77 I11 SVE <5 I11 BV 87 I10 Trial 5500 I9 37000 I10 BV 25 I11 BV <5 I10 SVE <5 I8 B BV 10 I8 BV 32 I9 trial 11000 sample in gault I8 Zone <5 2N BV I10 SV <5 I9 BV J10 SV <5 J10 BV J11 SV E 77

J11 BV <5 J10 BV 1300 J8 870 J9 trail 34 sample in gault J8 2 BV <5 J9 BV 2400 J10 200 J8 Zone <5 2N BV J8 BV <5 K10 490 K9 trial 85 sample in gault K10 BV 780 K9 BV <5 K10 BV L9 SV W 15

L10 BV 160 L9 trail 100 sample in gault L10 SV 1500 W L10B BV <5

L10 Trial <5 12 DCA 12 DCA BW User- User- User- validation Depth (m) Sample Easting Northing defined 1 defined 2 defined 3 ID Filter Filter

L9 BV <5 L10 0.5 <5 L9 0.5 <5 C19 2.0M

C20 5.5M

D18 2.5M

D19 1.0M

D20 4.9M

E19 SVE E19 BV E19 SVN

E19 SVS

E20 4.7M

F19 4.4M

E18 4.4M

F18 2.8M (CS)

F19 BV F19 SVE (CS) F19 SVN

F19 SVS

F20 3.9M

BHG11 <5 BHI5 <5 BHG10b <5 I6 SV BW 31

H6 SV <25 BW H7 SV <5 BW G8 SV <5 BW BHG9 <5 MARL H6 BV 35 BW BHG8 <5 I6 BV BW 1200

G9 BV 29 BW BHG9 <5 BENTON ITE H7 BV 520 BW G10 SV <25 BW G8 BWW <250

G10 BV 81 BW BHG9 <5 G8 BV <25 BW G9 SV <25 BW BHG12 <5 K5BWBV 110

BHJ5 <5 J6 SV <5 BW BHH6 <5 BHH7 <5 J6 BV 10 BW 12 DCA 12 DCA BW User- User- User- validation Depth (m) Sample Easting Northing defined 1 defined 2 defined 3 ID Filter Filter

K5BWSV <5

BHF14 <5 G12 <5 BWW BHF13 <5 BHK5 <5 K5 BWS <5 Client/client ref: 12 DCA 12 DCA BW Project ref: 5036769 Site ref: Hauxton validation Data description: Validation samples Contaminant(s): 1,2-dichloroethane Test scenario: Planning Date: 20 September 2012 User details: TM

Critical concentration, Cc 3910 3910

Notes

Full dataset size 55 33 0 0 0 0 0 0 0 0 0 0 0 0 Outliers present? No #NULL! Number of outliers temporarily 0 excluded Number removed by filter 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Sample size, n 55 33 0 0 0 0 0 0 0 0 0 0 0 0 Sample mean, x 1557.43636 67.9090909 No Data No Data No Data No Data No Data No Data No Data No Data No Data No Data No Data No Data Standard deviation, s 5605.60993 223.35361 Number of non-detects 24 25 0 0 0 0 0 0 0 0 0 0 0 0 Set non-detect values to: Half detection limit2 Half detection limit2 Half detection limit2 Half detection limit2 Half detection limit2 Half detection limit2 Half detection limit2 Half detection limit2 Half detection limit2 Half detection limit2 Half detection limit2 Half detection limit2 Half detection limit2 Half detection limit2 Distribution Non-normal Non-normal Statistical approach Auto: Chebychev3 Auto: Chebychev3 Auto 3 Auto 3 Auto 3 Auto 3 Auto 3 Auto 3 Auto 3 Auto 3 Auto 3 Auto 3 Auto 3 Auto 3

Test scenario: Planning: is true mean lower than critical concentration (µ < Cc)? Evidence level required: 95% Use Log-Normal distribution to test for outliers

t statistic, t0 (or k0) -3.112431849 -98.816992 Upper confidence limit 4852.15498 237.386887 (on true mean concentration, µ)

Evidence level 91% 100%

Base decision on: evidence 2level evidence 2level 2 2 2 2 2 2 2 2 2 2 2 2 Result µ ≈≥ Cc µ < Cc

Select dataset Y Y Y Y Y Y Y Y Y Y Y Y Y Y

Back to data Go to outlier test Go to normality test Show individual summary

91% 100%

Hauxton Post-Remediation Human Health Risk Assessment

G.3. Vertase February 2013 Vapour Report and Laboratory Results

FLUX BOX MONITORING FACTUAL REPORT FORMER BAYER CROPSCIENCE SITE, HAUXTON

FEBRUARY 2013

On behalf of

Atkins FLUX BOX MONITORING FACTUAL REPORT FORMER BAYER CROPSCIENCE SITE, HAUXTON

Table of Contents

1.0 Introduction ...... 1 1.1 General ...... 1 2.0 Sampling Strategy...... 3 2.2 Flux Box Measurements ...... 4 3.0 Results ...... 5 3.1 Flux Box Monitoring Sheets ...... 5 3.2 Summary Sheets...... 5 3.3 Laboratory Certificates...... 5

Appendices Appendix A Drawing

Appendix B Standard Operating Procedure

Appendix C Monitoring Protocol Sheets

Appendix D Summary Table of Results

Appendix E Analysis Certificates

907BRI REVA i FLUX BOX MONITORING FACTUAL REPORT FORMER BAYER CROPSCIENCE SITE, HAUXTON

1.0 Introduction

1.1 General

1.1.1 Vertase FLI Limited (VertaseFLI) was appointed by Harrow Estates (Client) to undertake remedial works at the Former Bayer Crop Science Agrochemical Works, Road, Hauxton, Cambridgeshire (Site).

1.1.2 The site has been determined as a Special Site under Part IIa of the Environmental Protection Act (EPA) 1990 due to the identified significant pollutant linkages with respect to groundwater and surface water. The site was used for the storage and production of agrochemicals from the 1940’s through to ceasing production in 2004. The site was used primarily for the synthesis, formulation, packaging and storage of agrochemicals (both herbicides and pesticides). It is this former historical use that led to the contamination of soil and groundwater at the site. The site will be developed primarily for residential use post remediation. Remediation works are complete at the site.

Remediation Works Comprised:

1. Breaking, uplifting, crushing and sampling of concrete slabs;

2. Excavation, breaking crushing and sampling of underground obstructions;

3. Pumping and treatment of shallow groundwater and perched waters;

4. Services diversions;

5. Excavation of contaminated soils;

6. Sorting, classification, processing and segregation of soils;

7. Preparation of soils for treatment;

8. Treatment of contaminated soils;

9. Removal of all preferential pathways e.g. pipelines, drainage runs;

10. Re-instatement of soils;

11. Validation testing;

12. Re-instatement of site and Removal of plant and equipment;

13. Finalisation of site model to assess any residual risks;

14. Reporting.

907BRI REVA 1 FLUX BOX MONITORING FACTUAL REPORT FORMER BAYER CROPSCIENCE SITE, HAUXTON

1.1.3 During the remediation it was noted that there was a significant impact to a significant portion of the soils at the site by chlorinated solvents. It was decided by the remediation contractor (VertaseFLI) and supervising consulting engineer on site (Atkins) to collect supplementary data via flux boxes to aid in the assessment of risks from vapours post remediation as was required in the Remediation Method Statement VertaseFLI (2009), ‘Remediation Method Statement – Former Bayer Crop Science Site, Hauxton Cambridgeshire’, April 2009 – Revision 6. The following sets out the strategy for this and presents the collected data.

907BRI REVA 2 FLUX BOX MONITORING FACTUAL REPORT FORMER BAYER CROPSCIENCE SITE, HAUXTON

2.0 Sampling Strategy It was determined that to aid post remediation risk assessment, samples would be collected via flux boxes. The locations of these samples were based on the established site grid and also based on observations during the site works and the base validation data, VertaseFLI (2012a) ‘Contract Completion Report, Former Bayer Crop Science Site, Hauxton, Cambridgeshire’, May 2012 – Revision A”. The Completion report details all soils analysis for the site and all work undertaken during the remedial works including presenting all chemical analysis results and site conditions on completion.

2.1.1 The first area of focus was the base of the excavation before fill was replaced to assess residual concentrations within the lower deposits. This was in the area of the former manufacturing plant towards the north of the site where the most significant contamination was found. This testing was generally undertaken between depths of 3 to 5 m typically towards 5.5m. The following grid squares were targeted the location of which can be seen on Drawing D907_07.

 G9,G10,G13,G14

 H7,H8,H9,H10,H11

 I8,I9,I10,I11

 J6,J7,J10,J11

 K8,K9,K10

2.1.2 Following the restoration of the site the following grid squares were targeted at the surface of the site. Similar coverage of the deeper areas was targeted along with an area towards the south of the site. The testing was undertaken at the surface. The following grid squares were targeted the location of which can be seen on Drawing D907_07.

 G8,G9,G10

 H7,H8,H9

 I7,I8,I9

 J8,J9,J11,J12,J13

 K9,K11,K12,K13

 L9,L11,L12,L13,M11

 E19,F19,G20,H20,I20

907BRI REVA 3 FLUX BOX MONITORING FACTUAL REPORT FORMER BAYER CROPSCIENCE SITE, HAUXTON

2.2 Flux Box Measurements

2.2.1 Flux boxes were established and set up in accordance with the Standard operating procedure with background monitoring, weather conditions and other relevant points noted. The SOP can be found at Appendix B and provides general guidance on setting up the flux boxes. Whilst suggested pump rates are provided in the SOP it is important to note that the time taken for pumped samples will vary dependant on expected concentrations, pump flow volume, determinands required, the detection limit required and the recommendations of the laboratory. The laboratory recommends the following:

High Concentrations (i.e. you can smell it) 5 minutes

Suspected High 5 to 10 minutes

Unknown 50 minutes

Low 60 to 100 minutes

Expected clean air 100 minutes

It is sometimes necessary to reduce exposure time to ensure that the tube and thus detector is not saturated. For the purposes of the flux box testing at Hauxton the environmental engineer based the sampling time upon the above guide in conjunction with the knowledge gained during the site works and wider monitoring.

907BRI REVA 4 FLUX BOX MONITORING FACTUAL REPORT FORMER BAYER CROPSCIENCE SITE, HAUXTON

3.0 Results

3.1 Flux Box Monitoring Sheets

3.1.1 The flux box monitoring protocol sheets can be found at Appendix C. These record the conditions during the tests, any PID data gathered and references the Tenax Tubes samples.

3.2 Summary Sheets

3.2.1 A summary of all the collected data including the depth of the test, the grid square, start and finish times and note and observations can be found at Appendix D.

3.3 Laboratory Certificates

3.3.1 Laboratory certificates for the Collected Tenax Tubes can be found at Appendix E.

907BRI REVA 5 FLUX BOX MONITORING FACTUAL REPORT FORMER BAYER CROPSCIENCE SITE, HAUXTON

Appendix A

907BRI REVA 6

FLUX BOX MONITORING FACTUAL REPORT FORMER BAYER CROPSCIENCE SITE, HAUXTON

Appendix B

907BRI REVA 7 SOP 021 - STANDARD OPERATING PROCEDURE FLUX BOX MONITORING

Page 1 of

PURPOSE / BACKGROUND

This standard operating procedure (SOP) covers the use of flux boxes for data gathering to enable assessment of VOC emissions from Contaminated Land Sites. It is not to be used for assessing emissions from landfills without notification.

GENERAL INSTRUCTIONS

1. This SOP provides sequential instructions which should be undertaken in the correct order. 2. If the sequence of instructions can not be completed as described, the Vertase F.L.I. Project Manager should be informed so that amendments can be made or steps can be clarified. 3. This SOP s hould be read in conjunction with any SOP’s that are applicable to the works being undertaken.

TOOLS, MATERIALS AND EQUIPMENT

. Appropriately calibrated PID and tubing. . Flux box of correct design and known dimensions.

. Notebook . Sand bags for weighting down Flux Box. . Pumps and ATD tubes if required.

LIMITATIONS OF METHOD This method is suitable only for estimating the flux from contaminated sites and should not be used in this form on landfill sites.

Ensure you have the correct lamp within the PID, appropriate calibration certificates and correction factors.

Weather conditions can have a great bearing on the results of this test, this should be discussed with the Project Manager.

Revision A May 2011

SOP 021 - STANDARD OPERATING PROCEDURE FLUX BOX MONITORING

Page 2 of 2

PREPARATION

1. Access to site should be agreed in advance with relevant people (site owners, client etc). 2. Site engineers should have received site specific H&S induction by Project Managers. 3. Permits to Work should be obtained in advance, where required (to be advised by Project Manager). 4. Site induction to be received by all site engineers, where applicable (to be advised by Project Manager). 5. The aforementioned equipment should be checked prior to each visit to site to ensure that it is in a good state of repair, fully operational and that calibration certificates will be valid at the time of monitoring. Any faults should be reported promptly to the equipment supervisor.

PROCEDURE

1. Undertake walkover of the area for the Flux Box test. Record details of the surface appearance. Take a photograph of the surface and note both the ambient concentration via the PID at 0.05, 0.1, 0.3, 0.6, 1.2m above ground level and above head height. Note any relevant observations. 2. Record the presence of frost, the barometric pressure and wind speed along with trends over the period of the planned Flux Box test. 3. Prepare the area of the test ensuring that it is flat and level and free of large objects, vegetation and any obvious changes in level. Record the position of the test site accurately. 4. Calibrate the PID appropriately. 5. Set up the Flux Box, weighting it down with 2-4 sand bags. Ensure the skirt is placed in contact with the ground and weighted down with sand bags or loose sand to ensure an effective seal. 6a. For Ten ax tube boxes now connect the pump and tube to the port and commence the test. Record accurately to the hour, minute and seconds the start time. Leave the pump running for approximately 24 hours ensuring the end time for the test is accurately recorded. 6b. For PID based tests, ensure the PID is calibrated. Record the time at the start of the test. Connect the PID to the Flux Box and turn on, allowing the reading to stabilise over a period of approximately 20-30 seconds, then take the reading as an average over a 10-15 second period. Detach the instrument after the reading. Repeat at 1 minute intervals for a minimum of 30 minutes or until readings have stabilised. After 30 minutes, change the monitoring frequency to one reading every 5 minutes. If no significant change is noted after 1 hour cease the test. Significant change would be an increase of 5ppm or more over any 30 minute period.

If an increase of 75ppm over 30 minutes is noted, continue the test recording concentrations at 5 or 10 minute intervals based on observations during the first hour of the test.

Record the time and weather conditions including barometric pressure on completion of the test. Deconstruct the Flux Box moving to the next position.

RECORDS AND DOCUMENTATION

1. Monitoring results to be recorded in field note book or on standardised form. 2. Date and time of attendance of site. 3. Any H&S related incidents (slips, trips, falls etc). 4. Permits to Work and site inductions, where applicable. 5. All operatives associated with the work are to be given a tool box talk to describe the content of this Method Statement and related documentation and sign a register to acknowledge that they have received such instruction and understand the method and health and safety issues related to the task.

Revision A May 2011

FLUX BOX MONITORING FACTUAL REPORT FORMER BAYER CROPSCIENCE SITE, HAUXTON

Appendix C

907BRI REVA 8 FLUX BOX MONITORING

Site Name: ……Hauxton (REF:A101)…… Engineer Name: …Euan Liddle………..

Site Address:…Cambridge Road, Hauxton, Cambridge, CB22 5HT…………………...

Date: ……16/05/11…….. Test Location: …1 – grid H9/H8, gps 296/550

PID Reference No: …………V39…………………………

Atmospheric Description Weather Rising/falling Temperature Pressure (wet/dry/sunny/windy) Day of 1023 Falling 18°C Sunny with occasional showers monitoring Week before Sunny with occasional showers (generally)

Relevant Notes Test area fenced off from site traffic using Heras panels.

Moderately windy from NW

Underlying Gault clay has frequent cracks at surface from drying

PID and Tenax Undertaken

Walkover Results Height PPM Height PPM

0.05m 0.0 0.6m 0.0

0.1m 0.0 1.2m 0.0

0.3m 0.0 Overhead 0.0

Tenax Tube Reference (if applicable) FB1 Start Time (H/M/S) 17.02.11 (16.05.11) Finish Time (H/M/S) 16.09.11 (17.05.11)

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 1 0.0 29 0.0 2 0.0 30 0.0

3 0.0 35 0.3

4 0.0 40 0.3

5 0.0 45 0.8

6 0.0 50 0.6

7 0.0 55 0.2

8 0.0 60 0.3 9 0.0 TEST END TEST END 10 0.0 11 0.0 12 0.0 13 0.0 14 0.0 15 0.0 16 0.0 17 0.0 18 0.0 19 0.0 20 0.0 21 0.0 22 0.0 23 0.0 24 0.0 25 0.0 26 0.0 27 0.0 28 0.0

Test Complete at (H/M/S) 18.02.11

Signed EL

Page 2 of 2 FLUX BOX MONITORING

Site Name: ……Hauxton……(REF: A102) Engineer Name: …Euan Liddle………..

Site Address:…Cambridge Road, Hauxton, Cambridge, CB22 5HT…………………...

Date: ……16/05/11…….. Test Location: 2 – I10/J10, 271/521 grid ref

PID Reference No: …………V39…………………………

Atmospheric Description Weather Rising/falling Temperature Pressure (wet/dry/sunny/windy) Day of Sunny with occasional light 1023 Falling 18°C monitoring showers, windy NW Week before Generally Warm temperature High teens (generally)

Relevant Notes Underlying Gault Clay smooth and rolled flat with regular smooth cracks up to 5mm

Walkover Results Height PPM Height PPM

0.05m 0.0 0.6m 0.0

0.1m 0.0 1.2m 0.0

0.3m 0.0 Overhead 0.0

Tenax Tube Reference (if applicable) FB2 Start Time (H/M/S) 17.35.00 (16.05.11) Finish Time (H/M/S) 14.52.00 (17.05.11)

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 1 0.0 29 0.0 2 0.0 30 0.0

3 0.0 35 0.3

4 0.0 40 0.2

5 0.0 45 0.0

6 0.0 50 0.4

7 0.0 55 0.3

8 0.0 60 0.1 9 0.0 TEST END TEST END 10 0.0 11 0.0 12 0.0 13 0.0 14 0.0 15 0.0 16 0.0 17 0.0 18 0.0 19 0.0 20 0.0 21 0.0 22 0.0 23 0.0 24 0.0 25 0.0 26 0.0 27 0.0 28 0.0

Test Complete at (H/M/S) 18.35.00

Signed EL

Page 2 of 2 FLUX BOX MONITORING

Site Name: ……Hauxton……(REF:A103) Engineer Name: …Euan Liddle………..

Site Address:…Cambridge Road, Hauxton, Cambridge, CB22 5HT…………………...

Date: ……17/05/11…….. Test Location: 3, grid I9 – 276541 GPS…

PID Reference No: …………V39…………………………

Atmospheric Description Weather Rising/falling Temperature Pressure (wet/dry/sunny/windy) Day of Overcast and cloudy – light 1020 Rising 18°C monitoring breeze Week before Generally Warm temperature High teens (generally)

Relevant Notes Test area fenced off from site using heras

Light wind

Underlying Gault Clay has frequent cracks at the surface and is commonly fracturing to gravel on surface

Walkover Results Height PPM Height PPM

0.05m 0.5 0.6m 0.0

0.1m 0.0 1.2m 0.0

0.3m 0.0 Overhead 0.0

Tenax Tube Reference (if applicable) FB3 Start Time (H/M/S) 17.47.00 (17.05.11) Finish Time (H/M/S) 16.05.00 (18.05.11)

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 1 0.0 29 0.0 2 0.0 30 0.0

3 0.0 35 0.0

4 0.0 40 0.3

5 0.0 45 0.4

6 0.0 50 0.2

7 0.0 55 0.0

8 0.0 60 0.0 9 0.0 10 0.0 11 0.0 12 0.0 13 0.0 14 0.0 15 0.0 16 0.0 17 0.0 18 0.0 19 0.0 20 0.0 21 0.0 22 0.0 23 0.0 24 0.0 25 0.0 26 0.0 27 0.0 28 0.0

Test Complete at (H/M/S) 60.00.00

Signed EL

Page 2 of 2 FLUX BOX MONITORING

Site Name: ……Hauxton…(REF:A104)… Engineer Name: …Euan Liddle………..

Site Address:…Cambridge Road, Hauxton, Cambridge, CB22 5HT…………………...

Date: ……17/05/11…….. Test Location: 4 – grid J10, 266522 GPS…

PID Reference No: …………V39…………………………

Atmospheric Description Weather Rising/falling Temperature Pressure (wet/dry/sunny/windy) Day of Overcast with light wind from 1020 Rising 18°C monitoring NW Week before Generally Warm temperature High teens (generally)

Relevant Notes Underlying Gault Clay smooth and rolled flat with regular small cracks to 5mm

Walkover Results Height PPM Height PPM

0.05m 2.1 0.6m 0.0

0.1m 0.0 1.2m 0.0

0.3m 0.0 Overhead 0.0

Tenax Tube Reference (if applicable) FB4 Start Time (H/M/S) 17.52.00 (17.05.11) Finish Time (H/M/S) 15.45.00 (18.05.11)

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 1 0.0 29 0.0 2 0.0 30 0.1

3 0.0 31 0.0

4 0.0 32 0.0

5 0.0 33 0.4

6 0.0 34 0.2

7 0.0 35 0.3

8 0.0 40 0.0

9 0.0 45 0.0

10 0.0 50 0.0

11 0.0 55 0.0

12 0.0 60 0.0 13 0.0 14 0.0 15 0.0 16 0.0 17 0.0 18 0.0 19 0.0 20 0.0 21 0.0 22 0.0 23 0.0 24 0.0 25 0.0 26 0.0 27 0.0 28 0.0

Test Complete at (H/M/S) 60.00.00

Signed EL

Page 2 of 2 FLUX BOX MONITORING

Site Name: ……Hauxton…(REF:A105)… Engineer Name: …Euan Liddle………..

Site Address:…Cambridge Road, Hauxton, Cambridge, CB22 5HT…………………...

Date: ……18/05/11…….. Test Location: 5 – grid I9, 285 532………………….

PID Reference No: …………V39…………………………

Atmospheric Description Weather Rising/falling Temperature Pressure (wet/dry/sunny/windy) Day of 1014 Rising 18°C Generall dry but very overcast monitoring Week before Generally Warm temperature High teens (generally)

Relevant Notes Underlying Gault has track marks and is loose in places with light small (>5mm) cracking

Walkover Results Height PPM Height PPM

0.05m 0.0 0.6m 0.0

0.1m 0.0 1.2m 0.0

0.3m 0.0 Overhead 0.0

Tenax Tube Reference (if applicable) FB5 Start Time (H/M/S) 17.16.00 (18.05.11) Finish Time (H/M/S) 17.25.00 (19/5/11)

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) Post tenax tube pump testing (24hr) 19/5/11

1 0.0

2 0.0

3 0.0

4 0.0

5 0.0

6 0.0

7 0.0

8 0.0

9 0.0

10 0.0

Test Complete at (H/M/S) 00.10.00

Signed EL

Page 2 of 2 FLUX BOX MONITORING

Site Name: ……Hauxton…(REF:A106)…… Engineer Name: …Euan Liddle………..

Site Address:…Cambridge Road, Hauxton, Cambridge, CB22 5HT…………………...

Date: ……18/05/11…….. Test Location: 6- grid J10, 256519………………….

PID Reference No: …………V39…………………………

Atmospheric Description Weather Rising/falling Temperature Pressure (wet/dry/sunny/windy) Day of 1014 Rising 18°C Generally dry but very overcast monitoring Week before Generally Warm temperature High teens (generally)

Relevant Notes Underlying Gault rolled flat dry with some cracks up to 5mm

Walkover Results Height PPM Height PPM

0.05m 0.0 0.6m 0.0

0.1m 0.0 1.2m 0.0

0.3m 0.0 Overhead 0.0

Tenax Tube Reference (if applicable) FB5 Start Time (H/M/S) 16.55.00(18.05.11) Finish Time (H/M/S) 17.01.00 (19/5/11)

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 0 0.0 28 0.2

1 0.0 29 0.1

2 0.0 30 0.0

3 0.0 35 0.0

4 0.0 40 0.0

5 0.0 45 0.0

6 0.0 50 0.0

7 0.0 55 0.0

8 0.0 60 0.0

9 0.0

10 0.0 Post tenax tube testing 11 0.0 at 1017 M 19/5/11 PID 12 0.0 1 1.7

13 0.0 2 1.1

14 0.0 3 0.9

15 0.0 4 1.6

16 0.0 5 1.7

17 0.0 6 2.0

18 0.0 7 1.8

19 0.0 8 1.2

20 0.0 9 1.8

21 0.0 10 1.5 22 0.0 23 0.0 24 0.0 25 0.0 26 0.0 27 0.0

Test Complete at (H/M/S) 1.10.00 Signed EL

Page 2 of 2 FLUX BOX MONITORING

Site Name: ……Hauxton…(REF:A107) Engineer Name: …Euan Liddle………..

Site Address:…Cambridge Road, Hauxton, Cambridge, CB22 5HT…………………...

Date: ……20/05/11…….. Test Location: …5 – GPS 285532………….………...

PID Reference No: …………V39…………………………

Atmospheric Description Weather Rising/falling Temperature Pressure (wet/dry/sunny/windy) Day of 1019 Rising 18°C Dry cloudy monitoring Week before Generally Overcast but fine (generally)

Relevant Notes Underlying gault clay ahs been rolled and raked over. Drying of the surface has resulted in frequent cracks up to 5mm wide.

PID only due to Conditions

Walkover Results Height PPM Height PPM

0.05m 0.0 0.6m 0.0

0.1m 0.0 1.2m 0.0

0.3m 0.0 Overhead 0.0

Tenax Tube Reference (if applicable) N/A Start Time (H/M/S) Finish Time (H/M/S)

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 0 0.0 28 0.0 1 0.0 29 0.0

2 0.0 30 0.0

3 0.0 35 0.6

4 0.0 40 0.0

5 0.0 45 0.0

6 0.0 50 0.0

7 0.0 55 0.0 8 0.0 60 0.0 9 0.0 TEST END TEST END 10 0.0 11 0.0 12 0.0 13 0.0 14 0.0 15 0.0 16 0.0 17 0.0 18 0.0 19 0.0 20 0.0 21 0.0 22 0.0 23 0.0 24 0.0 25 0.0 26 0.0 27 0.0

Test Complete at (H/M/S) 60.00.00

Signed EL

Page 2 of 2 FLUX BOX MONITORING

Site Name: ……Hauxton…(REF:A108) Engineer Name: …Euan Liddle………..

Site Address:…Cambridge Road, Hauxton, Cambridge, CB22 5HT…………………...

Date: ……20/05/11…….. Test Location: …6, Grid J10 – GPS 256519…

PID Reference No: …………V39…………………………

Atmospheric Description Weather Rising/falling Temperature Pressure (wet/dry/sunny/windy) Day of 1019 Rising 18°C Dry cloudy monitoring Week before Generally Warm temperature High teens (generally)

Relevant Notes Underlying Gault Clay ahs been tracked and rolled. Drying of the surface has resulted in frequent cracks up to 3mm. PID only due to conditions

Walkover Results Height PPM Height PPM

0.05m 0.0 0.6m 0.0

0.1m 0.0 1.2m 0.0

0.3m 0.0 Overhead 0.0

Tenax Tube Reference (if applicable) N/A Start Time (H/M/S) Finish Time (H/M/S)

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 0 0.0 28 0.0 1 0.0 29 0.0

2 0.0 30 0.0

3 0.0 35 0.0

4 0.0 40 0.0

5 0.0 45 0.0

6 0.0 50 0.0

7 0.0 55 0.0 8 0.0 TEST END TEST END 9 0.0 10 0.0 11 0.0 12 0.0 13 0.0 14 0.0 15 0.0 16 0.0 17 0.0 18 0.0 19 0.0 20 0.0 21 0.0 22 0.0 23 0.0 24 0.0 25 0.0 26 0.0 27 0.0

Test Complete at (H/M/S) 60.00.00

Signed EL

Page 2 of 2 FLUX BOX MONITORING

Site Name: ……Hauxton…(REF:A109) Engineer Name: …Euan Liddle………..

Site Address:…Cambridge Road, Hauxton, Cambridge, CB22 5HT…………………...

Date: ……23/05/11…….. Test Location: …5, Grid I9 – GPS 285532...

PID Reference No: …………V39…………………………

Atmospheric Description Weather Rising/falling Temperature Pressure (wet/dry/sunny/windy) Day of 1018 Rising 16°C Overcast, cloudy, windy monitoring Week before Generally Dry but overcast (generally)

Relevant Notes Underlying Gault Clay as before with cracking at surface extending to 10mm

PID only No Tenax Tube due to conditions

Walkover Results Height PPM Height PPM

0.05m 0.0 0.6m 0.0

0.1m 0.0 1.2m 0.0

0.3m 0.0 Overhead 0.0

Tenax Tube Reference (if applicable) N/A Start Time (H/M/S) Finish Time (H/M/S)

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 0 0.0 28 0.0 1 0.0 29 0.0

2 0.0 30 0.0

3 0.0 35 0.6

4 0.0 40 0.0

5 0.0 45 0.0

6 0.0 50 0.0

7 0.0 55 0.0

8 0.0 60 0.0 9 0.0 TEST END TEST END 10 0.0 11 0.0 12 0.0 13 0.0 14 0.0 15 0.0 16 0.0 17 0.0 18 0.0 19 0.0 20 0.0 21 0.0 22 0.0 23 0.0 24 0.0 25 0.0 26 0.0 27 0.0

Test Complete at (H/M/S) 1 hour from commencement

Signed EL

Page 2 of 2 FLUX BOX MONITORING

Site Name: ……Hauxton…(REF: A110) Engineer Name: …Euan Liddle………..

Site Address:…Cambridge Road, Hauxton, Cambridge, CB22 5HT…………………...

Date: ……23/05/11…….. Test Location: …6, Grid K10/J10 – GPS 256519….

PID Reference No: …………V39…………………………

Atmospheric Description Weather Rising/falling Temperature Pressure (wet/dry/sunny/windy) Day of 1018 Rising 16°C Overcast, cloudy, windy monitoring Week before Generally Overcast but Dry (generally)

Relevant Notes Underlying Gault Clay as before with cracking increasing in diameter up to 10mm

Walkover Results Height PPM Height PPM

0.05m 0.0 0.6m 0.0

0.1m 0.0 1.2m 0.0

0.3m 0.0 Overhead 0.0

Tenax Tube Reference (if applicable) N/A Start Time (H/M/S) Finish Time (H/M/S)

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 0 0.0 28 0.0 1 0.0 29 0.0

2 0.0 30 0.0

3 0.0 35 0.6

4 0.0 40 0.0

5 0.0 45 0.0

6 0.0 50 0.0

7 0.0 55 0.0

8 0.0 60 0.0 9 0.0 TEST END TEST END 10 0.0 11 0.0 12 0.0 13 0.0 14 0.0 15 0.0 16 0.0 17 0.0 18 0.0 19 0.0 20 0.0 21 0.0 22 0.0 23 0.0 24 0.0 25 0.0 26 0.0 27 0.0

Test Complete at (H/M/S) 60.00.00

Signed EL

Page 2 of 2 FLUX BOX MONITORING

Site Name: ……Hauxton…(REF: A111) Engineer Name: …Euan Liddle………..

Site Address:…Cambridge Road, Hauxton, Cambridge, CB22 5HT…………………...

Date: ……24/05/11…….. Test Location: …7, Grid J10/J11 – GPS 257526…

PID Reference No: …………V108…………………………

Atmospheric Description Weather Rising/falling Temperature Pressure (wet/dry/sunny/windy) Day of 1025 Stable 15°C Clear sky, sunny and windy monitoring Week before Generally Overcast but fine (generally)

Relevant Notes Underlying Gault Clay has been bladed and rolled and has numerous small cracks in the surface

PID Only

Walkover Results Height PPM Height PPM

0.05m 4.1 0.6m 0.0

0.1m 0.0 1.2m 0.0

0.3m 0.0 Overhead 0.0

Tenax Tube Reference (if applicable) N/A Start Time (H/M/S) Finish Time (H/M/S)

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 0 21.2 28 31.9 1 29 32.1

2 24.4 30 32.4

3 20.1 35 35.6

4 23.8 40 37.5

5 23.6 45 41.1

6 25.9 50 33.3

7 26.0 55 40.1

8 26 60 35.8 9 26.8 TEST END TEST END 10 27.7 11 29.7 12 27.2 13 27.2 14 28.0 15 27.7 16 28.5 17 29.1 18 25.3 19 31.6 20 31.8 21 28.6 22 28.9 23 30.7 24 31.8 25 31.9 26 32.5 27 31.9

Test Complete at (H/M/S) 60.00.00

Signed EL

Page 2 of 2 FLUX BOX MONITORING

Site Name: ……Hauxton…(REF: A112) Engineer Name: …Euan Liddle………..

Site Address:…Cambridge Road, Hauxton, Cambridge, CB22 5HT…………………...

Date: ……24/05/11…….. Test Location: …8, Grid I9 – GPS 278,532…...

PID Reference No: …………V39…………………………

Atmospheric Description Weather Rising/falling Temperature Pressure (wet/dry/sunny/windy) Day of 1025 Stable 15°C Clear skys, sunny and windy monitoring Week before Generally Warm temperature High teens (generally)

Relevant Notes Underlying Gault Clay has been bladed and rolled and relatively crack/fracture free

PID ONLY

Walkover Results Height PPM Height PPM

0.05m 0.7 0.6m 0.0

0.1m 0.0 1.2m 0.0

0.3m 0.0 Overhead 0.0

Tenax Tube Reference (if applicable) N/A Start Time (H/M/S) Finish Time (H/M/S)

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 0 0 28 0 1 0 29 0 2 0 30 0

3 0 35 0

4 0 40 0

5 0 45 0

6 0 50 0

7 0 55 0

8 0 60 0 9 0 TEST END TEST END 10 0 11 0 12 0 13 0 14 0 15 0 16 0 17 0 18 0 19 0 20 0 21 0 22 0 23 0 24 0 25 0 26 0 27 0

Test Complete at (H/M/S) 60.00.00

Signed EL

Page 2 of 2 FLUX BOX MONITORING

Site Name: ……Hauxton…(REF A113) Engineer Name: …Euan Liddle………..

Site Address:…Cambridge Road, Hauxton, Cambridge, CB22 5HT…………………...

Date: ……25/05/11…….. Test Location: …J10 – GPS 257,522………...

PID Reference No: …………V108…………………………

Atmospheric Description Weather Rising/falling Temperature Pressure (wet/dry/sunny/windy) Day of 1022 Stable 15°C Clear sky, sunny, dry, light wind monitoring Week before (generally)

Relevant Notes Test overlay natural Gault Clay which had been bladed and rolled. Surface was dried out and had occasional cracks PID Only

Walkover Results Height PPM Height PPM

0.05m 2.6 0.6m 0.0

0.1m 0.0 1.2m 0.0

0.3m 0.0 Overhead 0.0

Tenax Tube Reference (if applicable) N/A Start Time (H/M/S) Finish Time (H/M/S)

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 0 234 28 150 1 238 29 147 2 241 30 148

3 239 35 148

4 245 40 145

5 227 45 158

6 224 50 129

7 223 55 139

8 205 60 119 9 213 TEST END TEST END 10 209 11 198 12 204 13 214 14 210 15 197 16 197 17 192 18 183 19 181 20 180 21 173 22 171 23 173 24 170 25 171 26 157 27 156

Test Complete at (H/M/S) 60.00.00

Signed EL

Page 2 of 2 FLUX BOX MONITORING

Site Name: ……Hauxton…(REF:A 114) Engineer Name: …Euan Liddle………..

Site Address:…Cambridge Road, Hauxton, Cambridge, CB22 5HT…………………...

Date: ……25/05/11…….. Test Location: …Grid I8 – GPS 215, 535…...

PID Reference No: …………V108…………………………

Atmospheric Description Weather Rising/falling Temperature Pressure (wet/dry/sunny/windy) Day of 1022 Stable 15°C Clear sky, suny, light wind monitoring Week before (generally)

Relevant Notes The underlying Gault Clay has dried out with a sandy gravelly surface

Walkover Results Height PPM Height PPM

0.05m 1.8 0.6m 0.0

0.1m 0.0 1.2m 0.0

0.3m 0.0 Overhead 0.0

Tenax Tube Reference (if applicable) N/A Start Time (H/M/S) Finish Time (H/M/S)

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 0 51.3 28 22.9 1 47.3 29 22.0 2 39.2 30 19.7

3 41.3 35 19.9

4 40.1 40 19.3

5 39.3 45 19.2

6 38.7 50 10.8

7 42.3 55 15.3

8 43.1 60 15.5 9 38.8 TEST END TEST END 10 39.3 11 36.7 12 35.4 13 37.4 14 37.1 15 33.2 16 35.2 17 36.8 18 34.9 19 33.0 20 31.5 21 29.8 22 29.1 23 28.1 24 26.6 25 26.9 26 24.9 27 24.4

Test Complete at (H/M/S) 60.00.00

Signed EL

Page 2 of 2 FLUX BOX MONITORING

Site Name: ……Hauxton…(REF:A 115) Engineer Name: …Euan Liddle………..

Site Address:…Cambridge Road, Hauxton, Cambridge, CB22 5HT…………………...

Date: ……25/05/11…….. Test Location: …J10 – GPS 266,524………...

PID Reference No: …………V108…………………………

Atmospheric Description Weather Rising/falling Temperature Pressure (wet/dry/sunny/windy) Day of 1019 Falling 19°C Dry overcast, cloudy , windy monitoring Week before Dry but overcast (generally)

Relevant Notes Test overlay natural Gault Clay which had been bladed and rolled. Surface drying and cracking (cracks up to 5 mm long)

PID only

Walkover Results Height PPM Height PPM

0.05m 1.8 0.6m 0.0

0.1m 0.0 1.2m 0.0

0.3m 0.0 Overhead 0.0

Tenax Tube Reference (if applicable) N/A Start Time (H/M/S) Finish Time (H/M/S)

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 0 28 10.1 1 10.0 29 10.2 2 10.1 30 10.4

3 10.0 35 10.2

4 10.0 40 10.7

5 9.9 45 10.2

6 10.0 50 10.6

7 10.2 55 10.4

8 10.4 60 10.6 9 10.5 TEST END TEST END 10 10.3 11 10.4 12 10.5 13 10.6 14 10.8 15 10.6 16 10.2 17 10.1 18 10.0 19 10.1 20 10.2 21 10.2 22 9.9 23 10.3 24 10.2 25 10.4 26 10.6 27 9.9

Test Complete at (H/M/S) 60.00.00

Signed EL

Page 2 of 2 FLUX BOX MONITORING

Site Name: ……Hauxton…(REF:A116) Engineer Name: …Euan Liddle………..

Site Address:…Cambridge Road, Hauxton, Cambridge, CB22 5HT…………………...

Date: ……25/05/11…….. Test Location: …I9 – GPS 290, 550………...

PID Reference No: …………V108…………………………

Atmospheric Description Weather Rising/falling Temperature Pressure (wet/dry/sunny/windy) Day of 1019 Falling 19°C Dry overcast, cloudy , windy monitoring Week before Generally Dry but overcast (generally)

Relevant Notes Test overlay natural Gault Clay which had been subject to blade and roller. Surface dry with loose clay and some cracking (up to 5mm)

Walkover Results Height PPM Height PPM

0.05m 0.4 0.6m 0.0

0.1m 0.0 1.2m 0.0

0.3m 0.0 Overhead 0.0

Tenax Tube Reference (if applicable) N/A Start Time (H/M/S) Finish Time (H/M/S)

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 0 28 5.1 1 2.0 29 5.1 2 3.3 30 5.2

3 3.6 35 5.2

4 3.7 40 5.1

5 3.8 45 5.2

6 3.7 50 5.4

7 3.2 55 5.4

8 3.4 60 5.6 9 3.5 TEST END TEST END 10 3.6 11 4.2 12 4.4 13 4.6 14 4.4 15 4.4 16 4.4 17 4.5 18 4.4 19 4.4 20 4.6 21 4.6 22 4.6 23 4.7 24 4.8 25 4.9 26 4.8 27 4.9

Test Complete at (H/M/S) 60.00.00

Signed EL

Page 2 of 2 FLUX BOX MONITORING

Site Name: ……Hauxton…(REF: A117) Engineer Name: …Euan Liddle………..

Site Address:…Cambridge Road, Hauxton, Cambridge, CB22 5HT…………………...

Date: ……25/05/11…….. Test Location: …J10 – GPS 254,523………...

PID Reference No: …………V108…………………………

Atmospheric Description Weather Rising/falling Temperature Pressure (wet/dry/sunny/windy) Day of 1022 Falling 20°C Clear Sunny, dry, windy monitoring Week before Generally Overcast but Fine (generally)

Relevant Notes Underlying Gault Clay has been bladed/rolled. Surface is dry with cracking in places (cracks up to 5mm long)

Walkover Results Height PPM Height PPM

0.05m 11.5 0.6m 0.0

0.1m 0.0 1.2m 0.0

0.3m 0.0 Overhead 0.0

Tenax Tube Reference (if applicable) N/A Start Time (H/M/S) Finish Time (H/M/S)

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 0 28 28.4 1 24.5 29 28.5 2 24.3 30 23.8

3 23.8 35 27.1

4 23.3 40 25.3

5 22.5 45 23.5

6 23.3 50 21.2

7 22.8 55 21.1

8 23.0 60 22.6 9 23.2 TEST END TEST END 10 24.1 11 25.6 12 24.8 13 26.2 14 27.3 15 28.1 16 28.0 17 28.3 18 27.8 19 27.5 20 28.1 21 27.6 22 27.4 23 27.1 24 27.2 25 26.9 26 26.8 27 29.1

Test Complete at (H/M/S) 60.00.00

Signed EL

Page 2 of 2 FLUX BOX MONITORING

Site Name: ……Hauxton…(REF A118) Engineer Name: …Euan Liddle………..

Site Address:…Cambridge Road, Hauxton, Cambridge, CB22 5HT…………………...

Date: ……25/05/11…….. Test Location: …I8 – GPS 296,553………...

PID Reference No: …………V108…………………………

Atmospheric Description Weather Rising/falling Temperature Pressure (wet/dry/sunny/windy) Day of 1020 Falling 20°C Clear Sunny, dry, windy monitoring Week before Generally fine sometimes overcast (generally)

Relevant Notes Underlying natural Gault Clay had been bladed, rolled and was dry with cracking and frequent breaking up

PID Only

Walkover Results Height PPM Height PPM

0.05m 2.1 0.6m 0.0

0.1m 0.0 1.2m 0.0

0.3m 0.0 Overhead 0.0

Tenax Tube Reference (if applicable) N/A Start Time (H/M/S) Finish Time (H/M/S)

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 0 28 5.3 1 6.6 29 5.0 2 7.5 30 5.1

3 5.3 35 4.8

4 4.9 40 5.1

5 5.3 45 6.2

6 5.1 50 6.5

7 5.3 55 6.9

8 5.6 60 6.8 9 5.8 TEST END TEST END 10 7.7 11 4.8 12 5.3 13 5.8 14 6.1 15 4.9 16 4.8 17 4.7 18 4.4 19 5.2 20 5.4 21 5.5 22 5.3 23 5.1 24 4.8 25 5.2 26 5.1 27 5.0

Test Complete at (H/M/S) 60.00.00

Signed EL

Page 2 of 2 FLUX BOX MONITORING

Site Name: ……Hauxton…(REF A119) Engineer Name: …Euan Liddle………..

Site Address:…Cambridge Road, Hauxton, Cambridge, CB22 5HT…………………...

Date: ……26/5/11…….. Test Location: …grid I9, GPR 289,534………...

PID Reference No: …………V108…………………………

Atmospheric Description Weather Rising/falling Temperature Pressure (wet/dry/sunny/windy) Day of 1003 Steady 16°C Heavy showers, overcast monitoring Week before Generally Fine But overcast (generally)

Relevant Notes Test overlying natural Gault Clay – Surface saturated by recent rain storms

Walkover Results Height PPM Height PPM

0.05m 4.5 0.6m 0.0

0.1m 0.0 1.2m 0.0

0.3m 0.0 Overhead 0.0

Tenax Tube Reference (if applicable) N/A Start Time (H/M/S) Finish Time (H/M/S)

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 0 28 13.2 1 12.1 29 12.9 2 13.9 30 13.1

3 11.8 35 13.0

4 12.3 40 12.8

5 12.2 45 12.7

6 12.5 50 12.9

7 12.8 55 13.2

8 12.3 60 12.9 9 12.4 TEST END TEST END 10 12.4 11 12.5 12 12.1 13 12.2 14 12.5 15 12.5 16 12.7 17 12.9 18 13.3 19 13.5 20 13.4 21 13.3 22 13.3 23 13.2 24 13.1 25 13.0 26 13.1 27 13.2

Test Complete at (H/M/S) 60.00.00

Signed EL

Page 2 of 2 FLUX BOX MONITORING

Site Name: ……Hauxton (REF A120) Engineer Name: …Euan Liddle………..

Site Address:…Cambridge Road, Hauxton, Cambridge, CB22 5HT…………………...

Date: ……26/5/11…….. Test Location: …I10 GPS 277,528………...

PID Reference No: …………V108…………………………

Atmospheric Description Weather Rising/falling Temperature Pressure (wet/dry/sunny/windy) Day of Overcast, light wind, sunny 1004 Falling 16°C monitoring spells/showers Week before Generally overcast but fine (generally)

Relevant Notes Test overlying natural Gault Clay (bladed and rolled), with surface drying and cracking.

Walkover Results Height PPM Height PPM

0.05m 0 0.6m 0.0

0.1m 0.0 1.2m 0.0

0.3m 0.0 Overhead 0.0

Tenax Tube Reference (if applicable) N/A Start Time (H/M/S) Finish Time (H/M/S)

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 0 28 7.4 1 6.2 29 7.5 2 6.1 30 7.4

3 5.9 35 7.2

4 6.3 40 7.2

5 6.2 45 7.1

6 6.1 50 7.0

7 6.1 55 6.8

8 6.3 60 6.7 9 5.7 TEST END TEST END 10 5.8 11 5.9 12 6.0 13 6.2 14 6.3 15 6.1 16 6.2 17 6.3 18 6.1 19 6.5 20 7.1 21 6.7 22 6.9 23 7.1 24 5.0 25 7.1 26 7.2 27 7.4

Test Complete at (H/M/S) 60.00.00

Signed EL

Page 2 of 2 FLUX BOX MONITORING

Site Name: ……Hauxton…(REF A121) Engineer Name: …Euan Liddle………..

Site Address:…Cambridge Road, Hauxton, Cambridge, CB22 5HT…………………...

Date: ……26/5/11…….. Test Location: …I9 GPS 282,532………...

PID Reference No: …………V108…………………………

Atmospheric Description Weather Rising/falling Temperature Pressure (wet/dry/sunny/windy) Day of 1003 Steady 16°C Heavy Showers, overcast monitoring Week before Generally fine but overcast (generally)

Relevant Notes Test overlying natural Gault Clay – Surface saturated following a rain storm

PID Only

Walkover Results Height PPM Height PPM

0.05m 0 0.6m 0.0

0.1m 0.0 1.2m 0.0

0.3m 0.0 Overhead 0.0

Tenax Tube Reference (if applicable) N/A Start Time (H/M/S) Finish Time (H/M/S)

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 0 28 5.9 1 6.1 29 6.2 2 6.0 30 6.4

3 5.8 35 5.1

4 5.9 40 6.3

5 6.0 45 6.2

6 6.1 50 6.1

7 6.3 55 6.1

8 5.9 60 5.9 9 5.8 TEST END TEST END 10 5.9 11 5.7 12 5.8 13 5.8 14 5.8 15 6.2 16 6.1 17 6.3 18 6.4 19 6.1 20 5.8 21 5.9 22 6.1 23 6.3 24 6.1 25 6.0 26 6.2 27 6.3

Test Complete at (H/M/S) 60.00.00

Signed EL

Page 2 of 2 FLUX BOX MONITORING

Site Name: ……Hauxton…(REF: A122) Engineer Name: …Euan Liddle………..

Site Address:…Cambridge Road, Hauxton, Cambridge, CB22 5HT…………………...

Date: ……26/5/11…….. Test Location: …I9 GPS 282,532………...

PID Reference No: …………V108…………………………

Atmospheric Description Weather Rising/falling Temperature Pressure (wet/dry/sunny/windy) Day of Heavy Showers, overcast, light 1004 Falling 14 monitoring wind Week before Generally fine but overcast (generally)

Relevant Notes Test overlying natural Gault Clay which was bladed and rolled. Surface dried out with numerous loose clay and cracking

PID Only

Walkover Results Height PPM Height PPM

0.05m 8.1 0.6m 0.0

0.1m 0.0 1.2m 0.0

0.3m 0.0 Overhead 0.0

Tenax Tube Reference (if applicable) N/A Start Time (H/M/S) Finish Time (H/M/S)

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 0 28 4.7 1 2.7 29 4.8 2 3.1 30 4.2

3 3.3 35 3.7

4 3.8 40 3.9

5 3.8 45 3.7

6 4.0 50 4.2

7 3.8 55 4.6

8 4.1 60 5.5 9 4.3 TEST END TEST END 10 4.8 11 4.7 12 4.7 13 4.3 14 4.4 15 4.4 16 4.4 17 4.4 18 3.5 19 3.7 20 3.8 21 4.1 22 4.0 23 3.8 24 4.0 25 3.9 26 4.2 27 5.0

Test Complete at (H/M/S) 60.00.00

Signed EL

Page 2 of 2 FLUX BOX MONITORING

Site Name: Hauxton REF: A123…………… Engineer Name: Euan Liddle………..

Site Address: A10 Cambridge Road………………………………..……………………

Date: 10/06/11……….. Test Location: J8 267560 top layer of marl…………

PID Reference No: …V108………………………

Atmospheric Description Weather Rising/falling Temperature Pressure (wet/dry/sunny/windy) Day of 1014 Steady 14 Overcast monitoring Week before

(generally)

Relevant Notes

Grid fill completed 2-3 weeks ago

Surface dry and cracking

Walkover Results Height PPM Height PPM 0.05m 0 0.6m 0 0.1m 0 1.2m 0 0.3m 0 Overhead 0

Tenax Tube Reference (if applicable) 10/6/11 MI 011044 Start Time (H/M/S) 14:05:00 Finish Time (H/M/S) 16:05:00

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 0 0 28 0.5 1 0 29 0.6 2 0 30 0.7 3 0 35 1.1 4 0 40 1.7 5 0 45 2.3 6 0 50 0.7 7 0 55 1.1 8 0.1 60 1.0 9 0.1 10 0.1 11 0.2 12 0.1 13 0.2 14 0.2 15 0.2 16 0.3 17 0.2 18 0.2 19 0.3 20 0.3 21 0.3 22 0.3 23 0.3 24 0.4 25 0.3 26 0.4 27 0.4

Test Complete at (H/M/S) 1:00:00 Signed EL

Page 2 of 2 FLUX BOX MONITORING

Site Name: Hauxton REF: A124…………… Engineer Name: Euan Liddle………..

Site Address: A10 Cambridge Road, Hauxton………………..……………………

Date: 10/06/11……….. Test Location: I7 284583 top layer of marl…………

PID Reference No: …V108………………………

Atmospheric Description Weather Rising/falling Temperature Pressure (wet/dry/sunny/windy) Day of 1014 Steady 14 Overcast monitoring Week before

(generally)

Relevant Notes

Top layer of marl which was finished filling 3 weeks ago

Surface drying with frequent cracks up to 5mm

2 hour test

Walkover Results Height PPM Height PPM 0.05m 0 0.6m 0 0.1m 0 1.2m 0 0.3m 0 Overhead 0

Tenax Tube Reference (if applicable) 10/6/11 MI 015132 Start Time (H/M/S) 14:04:00 Finish Time (H/M/S) 16:04:00

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 0 0.1 28 0.6 1 0.1 29 0.7 2 0.1 30 0.9 3 0.1 35 1.4 4 0.1 40 0.9 5 0.2 45 0.7 6 0.2 50 0.6 7 0.2 55 0.9 8 0.2 60 0.7 9 0.2 10 0.1 11 0.2 12 0.2 13 0.2 14 0.2 15 0.3 16 0.3 17 0.4 18 0.3 19 0.4 20 0.4 21 0.5 22 0.4 23 0.5 24 0.5 25 0.6 26 0.5 27 0.6

Test Complete at (H/M/S) 1:00:00 Signed EL

Page 2 of 2 FLUX BOX MONITORING

Site Name: Hauxton REF: A125…………… Engineer Name: Euan Liddle………..

Site Address: Hauxton…………………………………………………..……………………

Date: …13/06/11……….. Test Location: J6 265602 top layer………….………...

PID Reference No: …V108………………………

Atmospheric Description Weather Rising/falling Temperature Pressure (wet/dry/sunny/windy) Day of Sunny spells monitoring Week before Some showers (generally)

Relevant Notes

Fill surface damage from previous showers

2 hour test

Walkover Results Height PPM Height PPM 0.05m 17.2 0.6m 0.3 0.1m 3.1 1.2m 0 0.3m 0.9 Overhead 0

Tenax Tube Reference (if applicable) MI 012799 Start Time (H/M/S) 13:30:00 Finish Time (H/M/S) 15:30:00

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 1 0.4 29 14.2 2 0.1 30 32.9 3 0.6 35 31.6 4 0.9 40 33.7 5 2.1 45 32.7 6 2.8 50 33.0 7 3.5 55 34.1 8 3.8 60 31.6 9 3.9 10 4.6 11 4.9 12 5.3 13 4.3 14 4.7 15 4.1 16 2.6 17 0.9 18 0.8 19 0.5 20 0.3 21 0.8 22 0.9 23 6.9 24 8.5 25 9.7 26 10.7 27 11.5 28 12.2

Test Complete at (H/M/S) 1:00:00

Signed EL

Page 2 of 2 FLUX BOX MONITORING

Site Name: Hauxton REF: A126…………… Engineer Name: Euan Liddle………..

Site Address: Hauxton…………………………………………………..……………………

Date: 14/06/11……….. Test Location: J7………….………...

PID Reference No: …V108………………………

Atmospheric Description Weather Rising/falling Temperature Pressure (wet/dry/sunny/windy) Day of 1018 Stable 17 Sunny and warm monitoring Week before Mixed fair/showers (generally)

Relevant Notes

Surface dried out from showers a few days ago with some cracking

2 hour test

Walkover Results Height PPM Height PPM 0.05m 3.1 0.6m 0 0.1m 0 1.2m 0 0.3m 0 Overhead 0

Tenax Tube Reference (if applicable) J7 14/6/11 MI 035157 Start Time (H/M/S) 12:08:00 Finish Time (H/M/S) 14:03:00

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 1 0.3 29 12.1 2 0.4 30 14.8 3 1.7 35 39.8 4 2.1 40 38.4 5 2.6 45 39.9 6 5.3 50 22.6 7 18.3 55 0.4 8 11.9 60 0.2 9 10.2 10 13.1 11 16.3 12 14.1 13 19.1 14 23.1 15 21.2 16 25.3 17 27.9 18 29.2 19 25.0 20 24.3 21 9.6 22 14.7 23 23.0 24 15.5 25 23.8 26 4.7 27 11.3 28 10.7

Test Complete at (H/M/S) 1:00:00 Signed EL

Page 2 of 2 FLUX BOX MONITORING

Site Name: Hauxton REF: A127…………… Engineer Name: Euan Liddle………..

Site Address: Hauxton…………………………………………………..……………………

Date: 14/06/11……….. Test Location: K8 at formation level top of marl…………

PID Reference No: …V108………………………

Atmospheric Description Weather Rising/falling Temperature Pressure (wet/dry/sunny/windy) Day of 1018 Stable 17 Sunny monitoring Week before Mixed fair/showers (generally)

Relevant Notes

Fill surface dried up from recent showers with some cracking (73mm)

Walkover Results Height PPM Height PPM 0.05m 0.4 0.6m 0 0.1m 0 1.2m 0 0.3m 0 Overhead 0

Tenax Tube Reference (if applicable) K8 14/6/11 MI 0142196 Start Time (H/M/S) 12:05:00 Finish Time (H/M/S) 14:05:00

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 1 9.1 29 40.7 2 12.3 30 39.1 3 17.6 35 2.3 4 15.1 40 39.8 5 8.8 45 2.8 6 9.3 50 0.5 7 10.7 55 0.4 8 11.4 60 8.1 9 13.6 10 13.8 11 16.4 12 21.2 13 17.3 14 13.9 15 21.2 16 27.3 17 29.1 18 25.8 19 28.3 20 35.3 21 39.7 22 43.2 23 41.8 24 39.6 25 37.3 26 42.2 27 39.3 28 37.9

Test Complete at (H/M/S) 1:00:00 Signed EL

Page 2 of 2 FLUX BOX MONITORING

Site Name: Hauxton REF: A128…………… Engineer Name: Euan Liddle………..

Site Address: Hauxton………………………..……………………

Date: …17/06/11……….. Test Location: K9 Gault layer 3………….………...

PID Reference No: …V10………………………

Atmospheric Description Weather Rising/falling Temperature Pressure (wet/dry/sunny/windy) Day of Dry overcast monitoring Week before

(generally)

Relevant Notes

1 hour test

Walkover Results Height PPM Height PPM 0.05m 0 0.6m 0 0.1m 0 1.2m 0 0.3m 0 Overhead 0

Tenax Tube Reference (if applicable) K9 17/6/11 MI010907 Start Time (H/M/S) 10:38:00 Finish Time (H/M/S) 11:38:00

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 1 0 29 0 2 0 30 0 3 0 35 0 4 0 40 0 5 0 45 0 6 0 50 0 7 0 55 0 8 0 60 0 9 0 10 0 11 0 12 0 13 0 14 0 15 0 16 0 17 0 18 0 19 0 20 0 21 0 22 0 23 0 24 0 25 0 26 0 27 0 28 0

Test Complete at (H/M/S) 1:00:00

Signed EL

Page 2 of 2 FLUX BOX MONITORING

Site Name: Hauxton REF: A129…………… Engineer Name: Euan Liddle………..

Site Address: Hauxton………………………..……………………

Date: …17/06/11……….. Test Location: K10 Gault layer 3………….………...

PID Reference No: …V110………………………

Atmospheric Description Weather Rising/falling Temperature Pressure (wet/dry/sunny/windy) Day of Overcast dry monitoring Week before Occasional Showers (generally)

Relevant Notes

1 hour test

Walkover Results Height PPM Height PPM 0.05m 0 0.6m 0 0.1m 0 1.2m 0 0.3m 0 Overhead 0

Tenax Tube Reference (if applicable) K10 17/6/11 MI038935 Start Time (H/M/S) 10:30:00 Finish Time (H/M/S) 11:30:00

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 1 0.3 29 0.2 2 0.2 30 0.2 3 0.1 35 0.1 4 0.3 40 0.3 5 0.4 45 0.4 6 0.2 50 0.3 7 0.2 55 0.2 8 0.3 60 0.2 9 0.2 10 0.1 11 0.2 12 0.2 13 0.1 14 0.1 15 0.2 16 0.1 17 0.1 18 0.1 19 0.2 20 0.1 21 0.1 22 0.2 23 0.3 24 0.2 25 0.2 26 0.2 27 0.1 28 0.3

Test Complete at (H/M/S) 1:00:00

Signed EL

Page 2 of 2 FLUX BOX MONITORING

Site Name: Hauxton REF: A130…………… Engineer Name: Euan Liddle………..

Site Address: Hauxton………………………..……………………

Date: …20/06/11……….. Test Location: J10 262513 Gault layer 3……………...

PID Reference No: …V10………………………

Atmospheric Description Weather Rising/falling Temperature Pressure (wet/dry/sunny/windy) Day of 1013 Falling 18 Sunny monitoring Week before Showery but dry in last 1 day (generally)

Relevant Notes

Gault surface flat and rolled

Surface drying with very occasional cracks

1 hour test

Walkover Results Height PPM Height PPM 0.05m 0 0.6m 0 0.1m 0 1.2m 0 0.3m 0 Overhead 0

Tenax Tube Reference (if applicable) J10 20/06/11 MI036523 Start Time (H/M/S) 11:00:00 Finish Time (H/M/S) 12:04:30

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 1 19.9 29 0.8 2 16.1 30 0.8 3 32.1 35 1.1 4 21.3 40 1.0 5 0.9 45 0.9 6 23.4 50 4.7 7 21.7 55 1.1 8 15.9 60 1.3 9 17.3 10 22.1 11 1845 12 21.3 13 0.5 14 0.8 15 0.7 16 0.9 17 1.2 18 0.6 19 0.8 20 1.0 21 0.7 22 0.9 23 1.2 24 0.7 25 0.7 26 0.7 27 0.6 28 0.7

Test Complete at (H/M/S) 1:00:00

Signed EL

Page 2 of 2 FLUX BOX MONITORING

Site Name: ……Hauxton…(REF: A 131) Engineer Name: Euan Liddle/Nick Denton

Site Address:…Cambridge Road, Hauxton, Cambridge, CB22 5HT

Date: ……18/07/2011 Test Location: Top of Fill - Grid J9, 266 543

PID Reference No: …………V10

Atmospheric Temperature Description Weather Rising/falling Pressure (mb) (oC) (wet/dry/sunny/windy) Steady during Day of day Overcast with sunny spells and 999 16 monitoring Steady during occasional showers day Week before As above (generally)

Relevant Notes Compacted Marl. Marl compacted in accordance with Remediation Method Statement

Walkover Results Height PPM Height PPM

0.05m 0.0 0.6m 0.0

0.1m 0.0 1.2m 0.0

0.3m 0.0 Overhead 0.0

Tenax Tube Reference (if applicable) GRA 01445 Start Time (H/M/S) 16:20:50 Finish Time (H/M/S) 17:42:40

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 0 0.0 28 0.0

1 0.0 29 0.0

2 0.0 30 0.0

3 0.0 35 0.0

4 0.0 40 0.0

5 0.0 45 0.0

6 0.0 50 0.0

7 0.0 55 0.0

8 0.0 60 0.0

9 0.0

10 0.0

11 0.0 12 0.0 13 0.0 14 0.0 15 0.0 16 0.0 17 0.0 18 0.0 19 0.0 20 0.0 21 0.0 22 0.0 23 0.0 24 0.0 25 0.0 26 0.0 27 0.0

Test Complete at (H/M/S) 1:00:00

Signed EL/ND

Page 2 of 2 FLUX BOX MONITORING

Site Name: ……Hauxton…(REF: A 132)…………… Engineer Name: Nick Denton

Site Address:…Cambridge Road, Hauxton, Cambridge, CB22 5HT

Date: ……18/07/2011 Test Location: Top of Fill - Grid K9, 243 561

PID Reference No: …………V10

Atmospheric Temperature Description Weather Rising/falling Pressure (mb) (oC) (wet/dry/sunny/windy) Steady during Day of day Overcast with sunny spells and 999 15 monitoring Steady during occasional showers day Week before As above (generally)

Relevant Notes Compacted Marl. Marl compacted in accordance with Remediation Method Statement

Walkover Results Height PPM Height PPM

0.05m 0.0 0.6m 0.0

0.1m 0.0 1.2m 0.0

0.3m 0.0 Overhead 0.0

Tenax Tube Reference (if applicable) GRA 14593 Start Time (H/M/S) 13:48:15 Finish Time (H/M/S) 15:01:30

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 0 0.0 28 0.0

1 0.0 29 0.0

2 0.0 30 0.0

3 0.0 35 0.0

4 0.0 40 0.0

5 0.0 45 0.0

6 0.0 50 0.0

7 0.0 55 0.0

8 0.0 60 0.0

9 0.0

10 0.0

11 0.0 12 0.0 13 0.0 14 0.0 15 0.0 16 0.0 17 0.0 18 0.0 19 0.0 20 0.0 21 0.0 22 0.0 23 0.0 24 0.0 25 0.0 26 0.0 27 0.0

Test Complete at (H/M/S) 1:00:00

Signed ND

Page 2 of 2 FLUX BOX MONITORING

Site Name: ……Hauxton…(REF: A 133) Engineer Name: Euan Liddle/Nick Denton

Site Address:…Cambridge Road, Hauxton, Cambridge, CB22 5HT

Date: ……18/07/2011 Test Location: Top of Fill - Grid L9, 231 548

PID Reference No: …………V10

Atmospheric Temperature Description Weather Rising/falling Pressure (mb) (oC) (wet/dry/sunny/windy) Steady during Day of day Overcast with sunny spells and 999 15 monitoring Steady during occasional showers day Week before As above (generally)

Relevant Notes Compacted Marl. Marl compacted in accordance with Remediation Method Statement

Walkover Results Height PPM Height PPM

0.05m 0.0 0.6m 0.0

0.1m 0.0 1.2m 0.0

0.3m 0.0 Overhead 0.0

Tenax Tube Reference (if applicable) MI 143655 Start Time (H/M/S) 13:44:10 Finish Time (H/M/S) 14:52:35

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 0 0.0 28 0.0

1 0.0 29 0.0

2 0.0 30 0.0

3 0.0 35 0.0

4 0.0 40 0.0

5 0.0 45 0.0

6 0.0 50 0.0

7 0.0 55 0.0

8 0.0 60 0.0

9 0.0

10 0.0

11 0.0 12 0.0 13 0.0 14 0.0 15 0.0 16 0.0 17 0.0 18 0.0 19 0.0 20 0.0 21 0.0 22 0.0 23 0.0 24 0.0 25 0.0 26 0.0 27 0.0

Test Complete at (H/M/S) 1:00:00

Signed EL/ND

Page 2 of 2 FLUX BOX MONITORING

Site Name: ……Hauxton (REF: A 134)……………… Engineer Name: Nick Denton

Site Address:…Cambridge Road, Hauxton, Cambridge, CB22 5HT

Date: ……18 & 19/07/2011 Test Location: Top of Fill - Grid I9, 286 541

PID Reference No: …………V10

Atmospheric Temperature Description Weather Rising/falling Pressure (mb) (oC) (wet/dry/sunny/windy) Steady during Day of day Overcast with sunny spells and 999 16 monitoring Steady during occasional showers day Week before As above (generally)

Relevant Notes Compacted Marl. Marl compacted in accordance with Remediation Method Statement

PID testing carried out on 18/07/2011. Tenax Tube test carried out on 19/07/2011.

Weather details for 19/07/2011.

Atmospheric Pressure Rising/falling Temperature Description

1001mb Slight rise from 230C Overcast with sunny spells and yesterday occasional showers

Walkover Results Height PPM Height PPM

0.05m 0.0 0.6m 0.0

0.1m 0.0 1.2m 0.0

0.3m 0.0 Overhead 0.0

Tenax Tube Reference (if applicable) MI 058214 Start Time (H/M/S) 09:18:35 Finish Time (H/M/S) 10:31:44

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 0 0.0 28 0.0

1 0.0 29 0.0

2 0.0 30 0.0

3 0.0 35 0.0

4 0.0 40 0.0

5 0.0 45 0.0

6 0.0 50 0.0

7 0.0 55 0.0

8 0.0 60 0.0

9 0.0

10 0.0

11 0.0 12 0.0 13 0.0 14 0.0 15 0.0 16 0.0 17 0.0 18 0.0 19 0.0 20 0.0 21 0.0 22 0.0 23 0.0 24 0.0 25 0.0 26 0.0 27 0.0

Test Complete at (H/M/S) 1:00:00

Signed ND

Page 2 of 2 FLUX BOX MONITORING

Site Name: ……Hauxton…(REF:A135)…………… Engineer Name: Nick Denton

Site Address:…Cambridge Road, Hauxton, Cambridge, CB22 5HT

Date: ……19/07/2011 Test Location: Top of Fill - Grid H7, 300 580

PID Reference No: …………V10

Atmospheric Temperature Description Weather Rising/falling Pressure (mb) (oC) (wet/dry/sunny/windy) Slight rise from Day of yesterday Overcast with sunny spells and 1002 23 monitoring Steady during occasional showers day Week before As above (generally)

Relevant Notes Compacted Marl. Marl compacted in accordance with Remediation Method Statement

Walkover Results Height PPM Height PPM

0.05m 0.0 0.6m 0.0

0.1m 0.0 1.2m 0.0

0.3m 0.0 Overhead 0.0

Tenax Tube Reference (if applicable) MI 042729 Start Time (H/M/S) 15:18:50 Finish Time (H/M/S) 17:25:20

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 0 0.0 28 0.0

1 0.0 29 0.0

2 0.0 30 0.0

3 0.0 35 0.0

4 0.0 40 0.0

5 0.0 45 0.0

6 0.0 50 0.0

7 0.0 55 0.0

8 0.0 60 0.0

9 0.0

10 0.0

11 0.0 12 0.0 13 0.0 14 0.0 15 0.0 16 0.0 17 0.0 18 0.0 19 0.0 20 0.0 21 0.0 22 0.0 23 0.0 24 0.0 25 0.0 26 0.0 27 0.0

Test Complete at (H/M/S) 1:00:00 Signed ND

Page 2 of 2 FLUX BOX MONITORING

Site Name: ……Hauxton…(REF:A136)…………… Engineer Name: Nick Denton

Site Address:…Cambridge Road, Hauxton, Cambridge, CB22 5HT

Date: ……19/07/2011 Test Location: Top of Fill - Grid H8, 306 563

PID Reference No: …………V10

Atmospheric Temperature Description Weather Rising/falling Pressure (mb) (oC) (wet/dry/sunny/windy) Slight rise from Day of yesterday 1002 23 Sunny turning Overcast monitoring Steady during day Week before Overcast with sunny spells and

(generally) occasional showers

Relevant Notes Compacted Marl. Marl compacted in accordance with Remediation Method Statement

Walkover Results Height PPM Height PPM

0.05m 0.0 0.6m 0.0

0.1m 0.0 1.2m 0.0

0.3m 0.0 Overhead 0.0

Tenax Tube Reference (if applicable) MI 023008 Start Time (H/M/S) 12:38:15 Finish Time (H/M/S) 13:47:20

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 0 0.0 28 0.0

1 0.0 29 0.0

2 0.0 30 0.0

3 0.0 35 0.0

4 0.0 40 0.0

5 0.0 45 0.0

6 0.0 50 0.0

7 0.0 55 0.0

8 0.0 60 0.0

9 0.0

10 0.0

11 0.0 12 0.0 13 0.0 14 0.0 15 0.0 16 0.0 17 0.0 18 0.0 19 0.0 20 0.0 21 0.0 22 0.0 23 0.0 24 0.0 25 0.0 26 0.0 27 0.0

Test Complete at (H/M/S) 1:00:00 Signed ND

Page 2 of 2 FLUX BOX MONITORING

Site Name: ……Hauxton…(REF:A137)…………… Engineer Name: Nick Denton

Site Address:…Cambridge Road, Hauxton, Cambridge, CB22 5HT

Date: ……19/07/2011 Test Location: Top of Fill - Grid H9, 309 546

PID Reference No: …………V10

Atmospheric Temperature Description Weather Rising/falling Pressure (mb) (oC) (wet/dry/sunny/windy) Slight rise from Day of yesterday 1002 23 Overcast with sunny spells monitoring Steady during day Week before Overcast with sunny spells and

(generally) occasional showers

Relevant Notes Compacted Marl. Marl compacted in accordance with Remediation Method Statement

Walkover Results Height PPM Height PPM

0.05m 0.0 0.6m 0.0

0.1m 0.0 1.2m 0.0

0.3m 0.0 Overhead 0.0

Tenax Tube Reference (if applicable) GRA 01336 Start Time (H/M/S) 12:34:10 Finish Time (H/M/S) 13:52:30

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 0 0.0 28 0.0

1 0.5 29 0.0

2 0.0 30 0.0

3 0.0 35 0.0

4 0.0 40 0.0

5 0.0 45 0.0

6 0.0 50 0.0

7 0.0 55 0.0

8 0.0 60 0.0

9 0.0

10 0.0

11 0.0 12 0.0 13 0.0 14 0.0 15 0.0 16 0.0 17 0.0 18 0.0 19 0.0 20 0.0 21 0.0 22 0.0 23 0.0 24 0.0 25 0.0 26 0.0 27 0.0

Test Complete at (H/M/S) 1:00:00 Signed ND

Page 2 of 2 FLUX BOX MONITORING

Site Name: ……Hauxton… (REF: A138)……………Engineer Name: Nick Denton

Site Address:…Cambridge Road, Hauxton, Cambridge, CB22 5HT

Date: ……19/07/2011 Test Location: Top of Fill - Grid I8, 286 563

PID Reference No: …………V10

Atmospheric Temperature Description Weather Rising/falling Pressure (mb) (oC) (wet/dry/sunny/windy) Slight rise from Day of yesterday Overcast with sunny spells and 1002 23 monitoring Steady during occasional showers day Week before As above (generally)

Relevant Notes Compacted Marl. Marl compacted in accordance with Remediation Method Statement

Walkover Results Height PPM Height PPM

0.05m 0.0 0.6m 0.0

0.1m 0.0 1.2m 0.0

0.3m 0.0 Overhead 0.0

Tenax Tube Reference (if applicable) MI 143547 Start Time (H/M/S) 15:36:20 Finish Time (H/M/S) 17:29:55

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 0 0.0 28 0.0

1 0.0 29 0.0

2 0.0 30 0.0

3 0.0 35 0.0

4 0.0 40 0.0

5 0.0 45 0.0

6 0.0 50 0.0

7 0.0 55 0.0

8 0.0 60 0.0

9 0.0

10 0.0

11 0.0 12 0.0 13 0.0 14 0.0 15 0.0 16 0.0 17 0.0 18 0.0 19 0.0 20 0.0 21 0.0 22 0.0 23 0.0 24 0.0 25 0.0 26 0.0 27 0.0

Test Complete at (H/M/S) 1:00:00

Signed ND

Page 2 of 2 FLUX BOX MONITORING

Site Name: ……Hauxton…(REF: A 139)…………… Engineer Name: Nick Denton

Site Address:…Cambridge Road, Hauxton, Cambridge, CB22 5HT

Date: ……20/07/2011 Test Location: Layer 9 - Grid K11, 241 496

PID Reference No: …………V10

Atmospheric Temperature Description Weather Rising/falling Pressure (mb) (oC) (wet/dry/sunny/windy) Slight rise from Day of yesterday 1008 20 Overcast with sunny spells monitoring Steady during day Week before Overcast with sunny spells and

(generally) occasional showers

Relevant Notes Compacted Marl. Marl compacted in accordance with Remediation Method Statement

Walkover Results Height PPM Height PPM

0.05m 0.0 0.6m 0.0

0.1m 0.0 1.2m 0.0

0.3m 0.0 Overhead 0.0

Tenax Tube Reference (if applicable) GRA 09700 Start Time (H/M/S) 15:06:10 Finish Time (H/M/S) 16:07:15

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 0 0.0 28 0.0

1 0.0 29 0.0

2 0.0 30 0.0

3 0.0 35 0.0

4 0.0 40 0.0

5 0.0 45 0.0

6 0.0 50 0.0

7 0.0 55 0.0

8 0.0 60 0.0

9 0.0

10 0.0

11 0.0 12 0.0 13 0.0 14 0.0 15 0.0 16 0.0 17 0.0 18 0.0 19 0.0 20 0.0 21 0.0 22 0.0 23 0.0 24 0.0 25 0.0 26 0.0 27 0.0

Test Complete at (H/M/S) 1:00:00

Signed ND

Page 2 of 2 FLUX BOX MONITORING

Site Name: ……Hauxton…(REF: A 140)…………… Engineer Name: Nick Denton

Site Address:…Cambridge Road, Hauxton, Cambridge, CB22 5HT

Date: ……20/07/2011 Test Location: Layer 9 - Grid K12, 242 475

PID Reference No: …………V10

Atmospheric Temperature Description Weather Rising/falling Pressure (mb) (oC) (wet/dry/sunny/windy) Slight rise from Day of yesterday 1008 20 Overcast with sunny spells monitoring Steady during day Week before Overcast with sunny spells and

(generally) occasional showers

Relevant Notes Compacted Marl. Marl compacted in accordance with Remediation Method Statement

Walkover Results Height PPM Height PPM

0.05m 0.0 0.6m 0.0

0.1m 0.0 1.2m 0.0

0.3m 0.0 Overhead 0.0

Tenax Tube Reference (if applicable) GRA 04899 Start Time (H/M/S) 14:37:25 Finish Time (H/M/S) 16:04:20

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 0 0.0 28 0.0

1 0.0 29 0.0

2 0.0 30 0.0

3 0.0 35 0.0

4 0.0 40 0.0

5 0.0 45 0.0

6 0.0 50 0.0

7 0.0 55 0.0

8 0.0 60 0.0

9 0.0

10 0.0

11 0.0 12 0.0 13 0.0 14 0.0 15 0.0 16 0.0 17 0.0 18 0.0 19 0.0 20 0.0 21 0.0 22 0.0 23 0.0 24 0.0 25 0.0 26 0.0 27 0.0

Test Complete at (H/M/S) 1:00:00

Signed ND

Page 2 of 2 FLUX BOX MONITORING

Site Name: ……Hauxton…(REF: A141)…………… Engineer Name: Nick Denton

Site Address:…Cambridge Road, Hauxton, Cambridge, CB22 5HT

Date: ……20/07/2011 Test Location: Layer 9 - Grid L11, 221 491

PID Reference No: …………V10

Atmospheric Temperature Description Weather Rising/falling Pressure (mb) (oC) (wet/dry/sunny/windy) Slight rise from Day of yesterday 1008 20 Overcast monitoring Steady during day Week before Overcast with sunny spells and

(generally) occasional showers

Relevant Notes Compacted Marl. Marl compacted in accordance with Remediation Method Statement

Walkover Results Height PPM Height PPM

0.05m 0.0 0.6m 0.0

0.1m 0.0 1.2m 0.0

0.3m 0.0 Overhead 0.0

Tenax Tube Reference (if applicable) GRA 03729 Start Time (H/M/S) 11:26:55 Finish Time (H/M/S) 13:20:55

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 0 0.0 28 0.0

1 0.0 29 0.0

2 0.0 30 0.0

3 0.0 35 0.0

4 0.0 40 0.0

5 0.0 45 0.0

6 0.0 50 0.0

7 0.0 55 0.0

8 0.0 60 0.0

9 0.0

10 0.0

11 0.0 12 0.0 13 0.0 14 0.0 15 0.0 16 0.0 17 0.0 18 0.0 19 0.0 20 0.0 21 0.0 22 0.0 23 0.0 24 0.0 25 0.0 26 0.0 27 0.0

Test Complete at (H/M/S) 1:00:00

Signed ND

Page 2 of 2 FLUX BOX MONITORING

Site Name: ……Hauxton…(REF: A 142)…………… Engineer Name: Nick Denton

Site Address:…Cambridge Road, Hauxton, Cambridge, CB22 5HT

Date: ……20/07/2011 Test Location: Layer 9 - Grid L12, 220 475

PID Reference No: …………V10

Atmospheric Temperature Description Weather Rising/falling Pressure (mb) (oC) (wet/dry/sunny/windy) Slight rise from Day of yesterday 1008 20 Overcast monitoring Steady during day Week before Overcast with sunny spells and

(generally) occasional showers

Relevant Notes Compacted Marl. Marl compacted in accordance with Remediation Method Statement

Walkover Results Height PPM Height PPM

0.05m 0.0 0.6m 0.0

0.1m 0.0 1.2m 0.0

0.3m 0.0 Overhead 0.0

Tenax Tube Reference (if applicable) MI 058513 Start Time (H/M/S) 11:56:45 Finish Time (H/M/S) 13:22:00

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 0 0.0 28 0.0

1 0.0 29 0.0

2 0.0 30 0.0

3 0.0 35 0.0

4 0.0 40 0.0

5 0.0 45 0.0

6 0.0 50 0.0

7 0.0 55 0.0

8 0.0 60 0.0

9 0.0

10 0.0

11 0.0 12 0.0 13 0.0 14 0.0 15 0.0 16 0.0 17 0.0 18 0.0 19 0.0 20 0.0 21 0.0 22 0.0 23 0.0 24 0.0 25 0.0 26 0.0 27 0.0

Test Complete at (H/M/S) 1:00:00

Signed ND

Page 2 of 2 FLUX BOX MONITORING

Site Name: ……Hauxton…(REF: A 143)………… Engineer Name: Nick Denton

Site Address:…Cambridge Road, Hauxton, Cambridge, CB22 5HT

Date: ……20 & 21/07/2011 Test Location: Layer 9 - Grid J11, 263 498

PID Reference No: …………V10

Atmospheric Temperature Description Weather Rising/falling Pressure (mb) (oC) (wet/dry/sunny/windy) Slight rise from Day of yesterday 1008 20 Overcast with sunny spells monitoring Steady during day Week before Overcast with sunny spells and

(generally) occasional showers

Relevant Notes Compacted Marl. Marl compacted in accordance with Remediation Method Statement

PID testing carried out on 20/07/2011. Tenax Tube test carried out on 21/07/2011.

Weather details for 21/07/2011.

Atmospheric Pressure Rising/falling Temperature Description

1011mb Slight rise from 220C Overcast with sunny spells yesterday

Walkover Results Height PPM Height PPM

0.05m 0.0 0.6m 0.0

0.1m 0.0 1.2m 0.0

0.3m 0.0 Overhead 0.0

Tenax Tube Reference (if applicable) GRA 04296 Start Time (H/M/S) 08:21:40 Finish Time (H/M/S) 10:10:45

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 0 0.0 28 0.0

1 0.0 29 0.0

2 0.0 30 0.0

3 0.0 35 0.0

4 0.0 40 0.0

5 0.0 45 0.0

6 0.0 50 0.0

7 0.0 55 0.0

8 0.0 60 0.0

9 0.0

10 0.0

11 0.0 12 0.0 13 0.0 14 0.0 15 0.0 16 0.0 17 0.0 18 0.0 19 0.0 20 0.0 21 0.0 22 0.0 23 0.0 24 0.0 25 0.0 26 0.0 27 0.0

Test Complete at (H/M/S) 1:00:00

Signed ND

Page 2 of 2 FLUX BOX MONITORING

Site Name: ……Hauxton…(REF: A 144)…………… Engineer Name: Nick Denton

Site Address:…Cambridge Road, Hauxton, Cambridge, CB22 5HT

Date: ……20 & 21/07/2011 Test Location: Layer 9 - Grid K13, 263 498

PID Reference No: …………V10

Atmospheric Temperature Description Weather Rising/falling Pressure (mb) (oC) (wet/dry/sunny/windy) Slight rise from Day of yesterday 1008 20 Overcast with sunny spells monitoring Steady during day Week before Overcast with sunny spells and

(generally) occasional showers

Relevant Notes Compacted Marl. Marl compacted in accordance with Remediation Method Statement

PID testing carried out on 20/07/2011. Tenax Tube test carried out on 21/07/2011.

Weather details for 21/07/2011.

Atmospheric Pressure Rising/falling Temperature Description

1011mb Slight rise from 220C Overcast with sunny spells yesterday

Walkover Results Height PPM Height PPM

0.05m 0.0 0.6m 0.0

0.1m 0.0 1.2m 0.0

0.3m 0.0 Overhead 0.0

Tenax Tube Reference (if applicable) MI 143635 Start Time (H/M/S) 08:25:20 Finish Time (H/M/S) 9:52:45

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 0 0.0 28 0.0

1 0.0 29 0.0

2 0.0 30 0.0

3 0.0 35 0.0

4 0.0 40 0.0

5 0.0 45 0.0

6 0.0 50 0.0

7 0.0 55 0.0

8 0.0 60 0.0

9 0.0

10 0.0

11 0.0 12 0.0 13 0.0 14 0.0 15 0.0 16 0.0 17 0.0 18 0.0 19 0.0 20 0.0 21 0.0 22 0.0 23 0.0 24 0.0 25 0.0 26 0.0 27 0.0

Test Complete at (H/M/S) 1:00:00

Signed ND

Page 2 of 2 FLUX BOX MONITORING

Site Name: ……Hauxton…(REF: A145)…………… Engineer Name: Nick Denton

Site Address:…Cambridge Road, Hauxton, Cambridge, CB22 5HT

Date: ……21/07/2011 Test Location: Base of Excavation - Grid H10, 313 520

PID Reference No: …………V10

Atmospheric Temperature Description Weather Rising/falling Pressure (mb) (oC) (wet/dry/sunny/windy) Slight rise from Day of yesterday Overcast with sunny spells and 1011 22 monitoring Steady during occasional showers day Week before Overcast with sunny spells and

(generally) occasional showers

Relevant Notes Gault Clay at base of excavation. Surface rolled. Area had some desiccation cracks.

Walkover Results Height PPM Height PPM

0.05m 0.0 0.6m 0.0

0.1m 0.0 1.2m 0.0

0.3m 0.0 Overhead 0.0

Tenax Tube Reference (if applicable) GRA 01850 Start Time (H/M/S) 16:46:00 Finish Time (H/M/S) 17:47:20

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 0 0.0 28 0.0

1 0.0 29 0.0

2 0.0 30 0.0

3 0.0 35 0.0

4 0.0 40 0.0

5 0.0 45 0.0

6 0.0 50 0.0

7 0.0 55 0.1

8 0.0 60 0.0

9 0.0

10 0.0

11 0.1 12 0.0 13 0.0 14 0.0 15 0.0 16 0.0 17 0.0 18 0.0 19 0.0 20 0.0 21 0.0 22 0.0 23 0.0 24 0.0 25 0.0 26 0.0 27 0.0

Test Complete at (H/M/S) 1:00:00

Signed ND

Page 2 of 2 FLUX BOX MONITORING

Site Name: ……Hauxton…(REF:A146) Engineer Name: Euan Liddle/Nick Denton

Site Address:…Cambridge Road, Hauxton, Cambridge, CB22 5HT

Date: ……21/07/2011 Test Location: Base of Excavation - Grid H11, 314 597

PID Reference No: …………V10

Atmospheric Temperature Description Weather Rising/falling Pressure (mb) (oC) (wet/dry/sunny/windy) Slight rise from Day of yesterday Overcast with sunny spells and 1011 22 monitoring Steady during occasional showers day Week before Overcast with sunny spells and

(generally) occasional showers

Relevant Notes Gault Clay at base of excavation. Surface rolled. Area had some desiccation cracks.

Walkover Results Height PPM Height PPM

0.05m 0.7 0.6m 0.1

0.1m 0.2 1.2m 0.0

0.3m 0.2 Overhead 0.0

Tenax Tube Reference (if applicable) GRA 05877 Start Time (H/M/S) 15:41:00 Finish Time (H/M/S) 16:56:40

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 0 3.2 28 6.1

1 2.5 29 5.6

2 3.3 30 5.4

3 3.9 35 7.3

4 3.3 40 6.4

5 4.2 45 6.5

6 4.9 50 6.5

7 5.3 55 6.8

8 5.5 60 7.2

9 6.1

10 6.6

11 6.6 12 7.3 13 7.7 14 7.9 15 9.4 16 7.3 17 6.7 18 7.5 19 7.5 20 7.4 21 7.4 22 7.4 23 6.9 24 6.8 25 6.8 26 6.8 27 6.5

Test Complete at (H/M/S) 1:00:00 Signed ND

Page 2 of 2 FLUX BOX MONITORING

Site Name: ……Hauxton…(REF: A 147)…………… Engineer Name: Nick Denton

Site Address:…Cambridge Road, Hauxton, Cambridge, CB22 5HT

Date: ……21/07/2011 Test Location: Base of Excavation - Grid I10, 288 518

PID Reference No: …………V10

Atmospheric Temperature Description Weather Rising/falling Pressure (mb) (oC) (wet/dry/sunny/windy) Slight rise from Day of yesterday Overcast with sunny spells and 1011 22 monitoring Steady during occasional showers day Week before Overcast with sunny spells and

(generally) occasional showers

Relevant Notes Gault Clay at base of excavation. Area had some desiccation cracks.

Walkover Results Height PPM Height PPM

0.05m 1.4 0.6m 0.2

0.1m 0.9 1.2m 0.2

0.3m 0.1 Overhead 0.0

Tenax Tube Reference (if applicable) MI 014095 Start Time (H/M/S) 14:46:35 Finish Time (H/M/S) 15:51:35

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 0 3.1 28 5.9

1 3.2 29 5.6

2 3.2 30 5.9

3 3.4 35 5.0

4 3.5 40 3.8

5 3.7 45 6.7

6 4.0 50 7.8

7 4.1 55 9.8

8 4.1 60 8.2

9 4.0

10 3.8

11 3.5 12 3.5 13 3.6 14 3.6 15 3.6 16 3.4 17 3.4 18 3.6 19 4.0 20 4.0 21 4.0 22 4.0 23 5.8 24 5.6 25 5.2 26 5.2 27 5.4

Test Complete at (H/M/S) 1:00:00

Signed ND

Page 2 of 2 FLUX BOX MONITORING

Site Name: ……Hauxton…(REF: A 148)…………… Engineer Name: Nick Denton

Site Address:…Cambridge Road, Hauxton, Cambridge, CB22 5HT

Date: ……21/07/2011 Test Location: Base of Excavation - Grid I11, 286 503

PID Reference No: …………V10

Atmospheric Temperature Description Weather Rising/falling Pressure (mb) (oC) (wet/dry/sunny/windy) Slight rise from Day of yesterday Overcast with sunny spells and 1011 22 monitoring Steady during occasional showers day Week before Overcast with sunny spells and

(generally) occasional showers

Relevant Notes Gault Clay at base of excavation. Surface rolled. Area had numerous desiccation cracks.

Walkover Results Height PPM Height PPM

0.05m 1.4 0.6m 0.2

0.1m 0.9 1.2m 0.2

0.3m 0.1 Overhead 0.0

Tenax Tube Reference (if applicable) GRA 08649 Start Time (H/M/S) 13:22:35 Finish Time (H/M/S) 14:30:55

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 0 3.1 28 5.9

1 3.2 29 5.6

2 3.2 30 5.9

3 3.4 35 5.0

4 3.5 40 3.8

5 3.7 45 6.7

6 4.0 50 7.8

7 4.1 55 9.8

8 4.1 60 8.2

9 4.0

10 3.8

11 3.5 12 3.5 13 3.6 14 3.6 15 3.6 16 3.4 17 3.4 18 3.6 19 4.0 20 4.0 21 4.0 22 4.0 23 5.8 24 5.6 25 5.2 26 5.2 27 5.4

Test Complete at (H/M/S) 1:00:00

Signed ND

Page 2 of 2 FLUX BOX MONITORING

Site Name: ……Hauxton…(REF: A 149)…………… Engineer Name: Nick Denton

Site Address:…Cambridge Road, Hauxton, Cambridge, CB22 5HT

Date: ……21/07/2011 Test Location: Layer 9 - Grid J12, 262 475

PID Reference No: …………V10

Atmospheric Temperature Description Weather Rising/falling Pressure (mb) (oC) (wet/dry/sunny/windy) Slight rise from Day of yesterday 1011 20 Overcast with sunny spells monitoring Steady during day Week before Overcast with sunny spells and

(generally) occasional showers

Relevant Notes Compacted Marl. Marl compacted in accordance with Remediation Method Statement

Walkover Results Height PPM Height PPM

0.05m 0.0 0.6m 0.0

0.1m 0.0 1.2m 0.0

0.3m 0.0 Overhead 0.0

Tenax Tube Reference (if applicable) GRA 08874 Start Time (H/M/S) 11:36:35 Finish Time (H/M/S) 12:56:00

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 0 0.0 28 0.0

1 0.0 29 0.0

2 0.0 30 0.0

3 0.0 35 0.0

4 0.0 40 0.0

5 0.0 45 0.0

6 0.0 50 0.0

7 0.0 55 0.0

8 0.0 60 0.0

9 0.0

10 0.0

11 0.0 12 0.0 13 0.0 14 0.0 15 0.0 16 0.0 17 0.0 18 0.0 19 0.0 20 0.0 21 0.0 22 0.0 23 0.0 24 0.0 25 0.0 26 0.0 27 0.0

Test Complete at (H/M/S) 1:00:00

Signed ND

Page 2 of 2 FLUX BOX MONITORING

Site Name: ……Hauxton…REF A150 ...... Engineer Name: Nick Denton

Site Address:…Cambridge Road, Hauxton, Cambridge, CB22 5HT

Date: ……25/07/2011 Test Location: Base of Excavation - Grid G9, 324 542

PID Reference No: …………V10

Atmospheric Temperature Description Weather Rising/falling Pressure (mb) (oC) (wet/dry/sunny/windy) Dropped from Day of Friday 1008 18 Overcast with sunny spells monitoring Steady during day Week before Overcast with sunny spells and 1001 - 1016 (generally) occasional showers

Relevant Notes Gault Clay at base of excavation. Surface bladed flat. Area had some desiccation cracks.

Walkover Results Height PPM Height PPM

0.05m 0.6 0.6m 0.5

0.1m 0.6 1.2m 0.4

0.3m 0.5 Overhead 0.4

Tenax Tube Reference (if applicable) GRA 09730 Start Time (H/M/S) 10:57:35 Finish Time (H/M/S) 11:59:45 Next day

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 0 8.5 28 0.8

1 9.0 29 1.8

2 9.4 30 1.2

3 10.4 35 0.5

4 9.1 40 0.3

5 9.1 45 0.2

6 17.7 50 0.4

7 17.1 55 0.3

8 14.6 60 0.3

9 15.8

10 18.3

11 18.2 12 18.9 13 18.3 14 18.6 15 20.2 16 22.6 17 19.3 18 21.7 19 23.2 20 23.1 21 22.2 22 3.3 23 0.9 24 1.0 25 0.8 26 0.8 27 0.9

Test Complete at (H/M/S) 1:00:00

Signed ND

Page 2 of 2 FLUX BOX MONITORING

Site Name: ……Hauxton…(REF:A151)…………… Engineer Name: Nick Denton

Site Address:…Cambridge Road, Hauxton, Cambridge, CB22 5HT

Date: ……25/07/2011 Test Location: Base of Excavation - Grid G10, 329 520

PID Reference No: …………V10

Atmospheric Temperature Description Weather Rising/falling Pressure (mb) (oC) (wet/dry/sunny/windy) Dropped from Day of Friday 1008 18 Overcast with sunny spells monitoring Steady during day Week before Overcast with sunny spells and 1001 - 1016 (generally) occasional showers

Relevant Notes Gault Clay at base of excavation. Surface bladed flat. Area had some desiccation cracks.

Walkover Results Height PPM Height PPM

0.05m 0.2 0.6m 0.1

0.1m 0.1 1.2m 0.0

0.3m 0.1 Overhead 0.0

Tenax Tube Reference (if applicable) GRA 01964 Start Time (H/M/S) 09:31:20 Finish Time (H/M/S) 10:58:55

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 0 10.0 28 21.3

1 122 29 21.4

2 104 30 28.7

3 103 35 21.7

4 88.6 40 26.4

5 87.3 45 25.8

6 96.7 50 22.0

7 75.1 55 21.1

8 87.8 60 21.4

9 82.1

10 73.7

11 67.7 12 78.0 13 72.0 14 57.4 15 46.6 16 52.1 17 48.5 18 49.4 19 44.1 20 34.4 21 42.8 22 42.7 23 36.3 24 25.3 25 27.2 26 21.4 27 22.6

Test Complete at (H/M/S) 1:00:00

Signed ND

Page 2 of 2 FLUX BOX MONITORING

Site Name: ……Hauxton…(REF:A152)…………… Engineer Name: Nick Denton

Site Address:…Cambridge Road, Hauxton, Cambridge, CB22 5HT

Date: ……25/07/2011 Test Location: Base of Excavation - Grid H7, 310 584

PID Reference No: …………V10

Atmospheric Temperature Description Weather Rising/falling Pressure (mb) (oC) (wet/dry/sunny/windy) Dropped from Day of Friday 1008 22 Overcast with sunny spells monitoring Steady during day Week before Overcast with sunny spells and 1001 - 1016 (generally) occasional showers

Relevant Notes Gault Clay at base of excavation. Surface bladed flat. Area had some desiccation cracks.

Walkover Results Height PPM Height PPM

0.05m 0.3 0.6m 0.0

0.1m 0.1 1.2m 0.0

0.3m 0.0 Overhead 0.0

Tenax Tube Reference (if applicable) GRA 05820 Start Time (H/M/S) 13:51:05 Finish Time (H/M/S) 15:49:25

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 0 6.8 28 0.2

1 7.3 29 0.4

2 7.9 30 0.4

3 0.2 35 0.2

4 0.0 40 0.2

5 0.0 45 0.0

6 0.0 50 0.0

7 0.0 55 0.2

8 0.0 60

9 0.0

10 0.0

11 0.0 12 8.3 13 0.1 14 0.0 15 0.0 16 0.0 17 0.0 18 8.2 19 9.0 20 9.8 21 10.5 22 11.2 23 11.6 24 11.8 25 11.9 26 0.1 27 1.5

Test Complete at (H/M/S) 1:00:00

Signed ND

Page 2 of 2 FLUX BOX MONITORING

Site Name: ……Hauxton…(REF:153)…………… Engineer Name: Nick Denton

Site Address:…Cambridge Road, Hauxton, Cambridge, CB22 5HT

Date: ……25/07/2011 Test Location: Base of Excavation - Grid H8, 314 561

PID Reference No: …………V10

Atmospheric Temperature Description Weather Rising/falling Pressure (mb) (oC) (wet/dry/sunny/windy) Dropped from Day of Friday 1008 22 Overcast with sunny spells monitoring Steady during day Week before Overcast with sunny spells and 1001 - 1016 (generally) occasional showers

Relevant Notes Gault Clay at base of excavation. Surface bladed flat. Area had some desiccation cracks.

Walkover Results Height PPM Height PPM

0.05m 0.8 0.6m 0.0

0.1m 0.3 1.2m 0.0

0.3m 0.1 Overhead 0.0

Tenax Tube Reference (if applicable) GRA 09773 Start Time (H/M/S) 13:07:20 Finish Time (H/M/S) 14:14:20

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 0 3.2 28 4.4

1 2.9 29 4.3

2 3.0 30 3.9

3 3.4 35 3.6

4 3.4 40 3.5

5 3.2 45 3.1

6 3.5 50 2.6

7 3.7 55 2.6

8 3.7 60 2.6

9 3.9

10 4.0

11 3.0 12 3.8 13 4.0 14 4.4 15 4.1 16 3.4 17 2.9 18 2.9 19 2.8 20 2.6 21 2.5 22 2.6 23 2.9 24 2.9 25 3.1 26 3.7 27 3.7

Test Complete at (H/M/S) 1:00:00

Signed ND

Page 2 of 2 FLUX BOX MONITORING

Site Name: Hauxton REF: A154…………… Engineer Name: J Parker………..

Site Address: Bayer Crop Science, Hauxton………………………..……………………

Date: …12/08/11……….. Test Location: ……Grid H8 315563………………...

PID Reference No: …V36………………………

Atmospheric Description Weather Rising/falling Temperature Pressure (wet/dry/sunny/windy) Day of 987 Falling 19 Patchy cloud/dry light wind monitoring Week before Changeable partially wet (generally)

Relevant Notes

Base of excavation – gault clay – rolled

Tenax tube test only

Walkover Results Height PPM Height PPM 0.05m 0.0 0.6m 0.0 0.1m 1.3 1.2m 0.2 0.3m 0.0 Overhead 0.0

Tenax Tube Reference (if applicable) GRA 05529 Start Time (H/M/S) 14:50 Finish Time (H/M/S) 15:50

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM)

Test Complete at (H/M/S)

Signed

Page 2 of 2 FLUX BOX MONITORING

Site Name: Hauxton REF: A155…………… Engineer Name: J Parker………..

Site Address: Bayer Crop Science, Hauxton………………………..……………………

Date: …12/08/11……….. Test Location: ……Grid H7 312580………………...

PID Reference No: …V108………………………

Atmospheric Description Weather Rising/falling Temperature Pressure (wet/dry/sunny/windy) Day of 987 Falling 19 Patchy cloud/dry light wind monitoring Week before Changeable partially wet (generally)

Relevant Notes

Base of excavation – gault clay – rolled

Tenax tube test only

Walkover Results Height PPM Height PPM 0.05m 0.0 0.6m 0.0 0.1m 1.5 1.2m 0.3 0.3m 0.0 Overhead 0.0

Tenax Tube Reference (if applicable) GRA 05858 Start Time (H/M/S) 13:40 Finish Time (H/M/S) 14:40

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM)

Test Complete at (H/M/S)

Signed

Page 2 of 2 FLUX BOX MONITORING

Site Name: Hauxton REF: A156…………… Engineer Name: I Stephenson………..

Site Address: Hauxton, Cambridge………………………..………………………………

Date: …06/09/11……….. Test Location: …………G14 Gault Base……………...

PID Reference No: …V108………………………

Atmospheric Description Weather Rising/falling Temperature Pressure (wet/dry/sunny/windy) Day of 17 Wet monitoring Week before 17 Changeable (generally)

Relevant Notes

Walkover Results Height PPM Height PPM 0.05m 0.1 0.6m 0.0 0.1m 0.1 1.2m 0.0 0.3m 0.0 Overhead 0.0

Tenax Tube Reference (if applicable) G14 06/09/11 Start Time (H/M/S) 12:21:00 Finish Time (H/M/S) 13:21:00

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 1 0.1 29 0.1 2 0.1 30 0.3 3 0.0 35 0.3 4 0.1 40 0.4 5 0.0 45 0.7 6 0.0 50 0.6 7 0.0 55 0.8 8 0.0 60 0.8 9 0.0 10 0.0 11 0.0 12 0.0 13 0.0 14 0.0 15 0.0 16 0.1 17 0.0 18 0.1 19 0.1 20 0.1 21 0.1 22 0.1 23 0.1 24 0.1 25 0.0 26 0.2 27 0.1 28 0.2

Test Complete at (H/M/S)

Signed

Page 2 of 2 FLUX BOX MONITORING

Site Name: Hauxton REF: A157…………… Engineer Name: I Stephenson………..

Site Address: Hauxton, Cambridge………………………..………………………………

Date: …12/09/11……….. Test Location: …………G13………………...

PID Reference No: …V36………………………

Atmospheric Description Weather Rising/falling Temperature Pressure (wet/dry/sunny/windy) Day of Sunny/windy monitoring Week before Changeable (generally)

Relevant Notes

Unpleasant smell on gault. Precautionary flux box test on backfill likely to occur before results come back.

Walkover Results Height PPM Height PPM 0.05m 0.0 0.6m 0.0 0.1m 0.0 1.2m 0.0 0.3m 0.0 Overhead 0.0

Tenax Tube Reference (if applicable) GRA 08674 Start Time (H/M/S) 13:50 Finish Time (H/M/S) 15:05

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 1 0.0 29 0.0 2 0.0 30 0.0 3 0.0 35 0.0 4 0.0 40 0.0 5 0.0 45 0.0 6 0.0 50 0.0 7 0.0 55 0.0 8 0.0 60 0.0 9 0.0 10 0.0 11 0.0 12 0.0 13 0.0 14 0.0 15 0.0 16 0.0 17 0.0 18 0.0 19 0.0 20 0.0 21 0.0 22 0.0 23 0.0 24 0.0 25 0.0 26 0.0 27 0.0 28 0.0

Test Complete at (H/M/S) 13:55

Signed IS

Page 2 of 2 FLUX BOX MONITORING

Site Name: Bayer Site REF: A158………… Engineer Name: N Denton…………..

Site Address: Hauxton….…………………………………….………………………………

Date: …27/09/11……….. Test Location: ……G10 Grid: 5338521……………...

PID Reference No: …V36………………………

Atmospheric Description Weather Rising/falling Temperature Pressure (wet/dry/sunny/windy) Day of 1027 12 Overcast monitoring Week before 1027 24 Sunny (generally)

Relevant Notes

Zone 1 final layer marl

Sample for 6 solvent

Walkover Results Height PPM Height PPM 0.05m 0.0 0.6m 0.0 0.1m 0.0 1.2m 0.0 0.3m 0.0 Overhead 0.0

Tenax Tube Reference (if applicable) GRA 01121 Start Time (H/M/S) 09:55 Finish Time (H/M/S) 10:55

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 0 0 28 0 1 0 29 0 2 0 30 0 3 0 35 0 4 0 40 0 5 0 45 0 6 0 50 0 7 0 55 0 8 0 60 0 9 0 10 0 11 0 12 0 13 0 14 0 15 0 16 0 17 0 18 0 19 0 20 0 21 0 22 0 23 0 24 0 25 0 26 0 27 0

Test Complete at (H/M/S) 15:47

Signed ND

Page 2 of 2 FLUX BOX MONITORING

Site Name: Bayer Site REF: A159………… Engineer Name: N Denton…………..

Site Address: Hauxton….…………………………………….………………………………

Date: …27/09/11……….. Test Location: ……G9 Grid: 327546……………...

PID Reference No: …V36………………………

Atmospheric Description Weather Rising/falling Temperature Pressure (wet/dry/sunny/windy) Day of 1027 12 Overcast monitoring Week before 1027 24 Sunny (generally)

Relevant Notes

Zone 1 final layer marl

Sample for 6 solvent

Walkover Results Height PPM Height PPM 0.05m 0.0 0.6m 0.0 0.1m 0.0 1.2m 0.0 0.3m 0.0 Overhead 0.0

Tenax Tube Reference (if applicable) GRA 03428 Start Time (H/M/S) 09:57:00 Finish Time (H/M/S) 10:57:00

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 0 0 28 0 1 0 29 0 2 0 30 0 3 0 35 0 4 0 40 0 5 0 45 0 6 0 50 0 7 0 55 0 8 0 60 0 9 0 10 0 11 0 12 0 13 0 14 0 15 0 16 0 17 0 18 0 19 0 20 0 21 0 22 0 23 0 24 0 25 0 26 0 27 0

Test Complete at (H/M/S) 16:23

Signed ND

Page 2 of 2 FLUX BOX MONITORING

Site Name: Bayer Site REF: A160………… Engineer Name: N Denton…………..

Site Address: Hauxton….…………………………………….………………………………

Date: …28/09/11……….. Test Location: ……G8 Grid: 325561……………...

PID Reference No: …V36………………………

Atmospheric Description Weather Rising/falling Temperature Pressure (wet/dry/sunny/windy) Day of 1026 Steady 26 Sunny monitoring Week before

(generally)

Relevant Notes

Zone 1 top layer

Sample for 6 solvents

Walkover Results Height PPM Height PPM 0.05m 0.0 0.6m 0.0 0.1m 0.0 1.2m 0.0 0.3m 0.0 Overhead 0.0

Tenax Tube Reference (if applicable) GRA 04296 Start Time (H/M/S) 12:38:00 Finish Time (H/M/S) 14:08:00

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 1 0 29 0 2 0 30 0 3 0 35 0 4 0 40 0 5 0 45 0 6 0 50 0 7 0 55 0 8 0 60 0 9 0 10 0 11 0 12 0 13 0 14 0 15 0 16 0 17 0 18 0 19 0 20 0 21 0 22 0 23 0 24 0 25 0 26 0 27 0 28 0

Test Complete at (H/M/S) 12:35:00

Signed ND

Page 2 of 2 FLUX BOX MONITORING

Site Name: Bayer Site REF: A161………… Engineer Name: N Denton…………..

Site Address: Hauxton….…………………………………….………………………………

Date: …28/09/11……….. Test Location: ……H7 Grid: 201586……………...

PID Reference No: …V36………………………

Atmospheric Description Weather Rising/falling Temperature Pressure (wet/dry/sunny/windy) Day of 1026 Steady 26 Sunny monitoring Week before

(generally)

Relevant Notes

Zone 1 top layer

Sample for 6 solvents

Walkover Results Height PPM Height PPM 0.05m 0.0 0.6m 0.0 0.1m 0.0 1.2m 0.0 0.3m 0.0 Overhead 0.0

Tenax Tube Reference (if applicable) GRA 09722 Start Time (H/M/S) 13:15 Finish Time (H/M/S) 14:15

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 1 0 29 0 2 0 30 0 3 0 35 0 4 0 40 0 5 0 45 0 6 0 50 0 7 0 55 0 8 0 60 0 9 0 10 0 11 0 12 0 13 0 14 0 15 0 16 0 17 0 18 0 19 0 20 0 21 0 22 0 23 0 24 0 25 0 26 0 27 0 28 0

Test Complete at (H/M/S) 13:10:00

Signed ND

Page 2 of 2 FLUX BOX MONITORING

Site Name: Hauxton REF: A162…………… Engineer Name: I Stephenson………..

Site Address: Former Bayer Crop Science Site, A10 Cambridge Road, Hauxton…

Date: …18/10/11……….. Test Location: ……E19 – centre point………………...

PID Reference No: …V36………………………

Atmospheric Description Weather Rising/falling Temperature Pressure (wet/dry/sunny/windy) Day of 1008 Rising 8 Sunny monitoring Week before 1020 Falling 15 Sunny Spells (generally)

Relevant Notes

Test performed on top of finished concrete levels.

Solvents and Tri and Di Chlorotoluene

Walkover Results Height PPM Height PPM 0.05m 0.0 0.6m 0.0 0.1m 0.0 1.2m 0.0 0.3m 0.0 Overhead 0.0

Tenax Tube Reference (if applicable) GRA 05842 Start Time (H/M/S) 09:06 Finish Time (H/M/S) 10:08

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 10:01 0.0 10:29 0.0 10:02 0.0 10:30 0.0 10:03 0.0 10:35 0.0 10:04 0.0 10:40 0.0 10:05 0.0 10:45 0.0 10:06 0.0 10:50 0.0 10:07 0.0 10:55 0.0 10:08 0.0 11:00 0.0 10:09 0.0 10:10 0.0 10:11 0.0 10:12 0.0 10:13 0.0 10:14 0.0 10:15 0.0 10:16 0.0 10:17 0.0 10:18 0.0 10:19 0.0 10:20 0.0 10:21 0.0 10:22 0.0 10:23 0.0 10:24 0.0 10:25 0.0 10:26 0.0 10:27 0.0 10:28 0.0

Test Complete at (H/M/S) 11:00

Signed IS

Page 2 of 2 FLUX BOX MONITORING

Site Name: Hauxton REF: A163…………… Engineer Name: I Stephenson………..

Site Address: Hauxton, A10 Cambridge Road, CB22 5HT………………………………

Date: …28/10/11……….. Test Location: …………G20………………...

PID Reference No: …V36………………………

Atmospheric Description Weather Rising/falling Temperature Pressure (wet/dry/sunny/windy) Day of 1023 Falling 14 Sunny monitoring Week before 1015 Rising 14 Sunny spells and showers (generally)

Relevant Notes

Test carried out on finished concrete levels.

Solvents and Tri and Di Chlorotoluene

Walkover Results Height PPM Height PPM 0.05m 0.0 0.6m 0.0 0.1m 0.0 1.2m 0.0 0.3m 0.0 Overhead 0.0

Tenax Tube Reference (if applicable) GRA 04560 Start Time (H/M/S) 12:09 Finish Time (H/M/S) 14:14

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 1 0.0 29 0.0 2 0.0 30 0.0 3 0.0 31 0.0 4 0.0 32 0.0 5 0.0 33 0.0 6 0.0 34 0.0 7 0.0 35 0.0 8 0.0 36 0.0 9 0.0 37 0.0 10 0.10 38 0.0 11 0.0 39 0.0 12 0.0 40 0.0 13 0.0 45 0.0 14 0.0 50 0.0 15 0.0 55 0.0 16 0.0 60 0.0 17 0.0 18 0.0 19 0.0 20 0.0 21 0.0 22 0.0 23 0.0 24 0.0 25 0.0 26 0.0 27 0.0 28 0.0

Test Complete at (H/M/S) 14.00

Signed IS

Page 2 of 2 FLUX BOX MONITORING

Site Name: Hauxton REF: A164…………… Engineer Name: I Stephenson………..

Site Address: Hauxton, A10 Cambridge Road, CB22 5HT………………………………

Date: …28/10/11……….. Test Location: …………H20………………...

PID Reference No: …V36………………………

Atmospheric Description Weather Rising/falling Temperature Pressure (wet/dry/sunny/windy) Day of 1023 Falling 14 Sunny monitoring Week before 1015 Rising 14 Sunny spells and showers (generally)

Relevant Notes

Test carried out on finished concrete levels.

Solvents and Tri and Di Chlorotoluene

Walkover Results Height PPM Height PPM 0.05m 0.0 0.6m 0.0 0.1m 0.0 1.2m 0.0 0.3m 0.0 Overhead 0.0

Tenax Tube Reference (if applicable) GRA 05547 Start Time (H/M/S) 14:19 Finish Time (H/M/S) 15:51

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 1 0.0 29 0.0 2 0.0 30 0.0 3 0.0 35 0.0 4 0.0 40 0.0 5 0.0 45 0.0 6 0.0 50 0.0 7 0.0 55 0.0 8 0.0 60 0.0 9 0.0 10 0.0 11 0.0 12 0.0 13 0.0 14 0.0 15 0.0 16 0.0 17 0.0 18 0.0 19 0.0 20 0.0 21 0.0 22 0.0 23 0.0 24 0.0 25 0.0 26 0.0 27 0.0 28 0.0

Test Complete at (H/M/S) 16.55

Signed IS

Page 2 of 2 FLUX BOX MONITORING

Site Name: Hauxton REF: A165…………… Engineer Name: I Stephenson………..

Site Address: Hauxton, A10 Cambridge Road, CB22 5HT………………………………

Date: …28/10/11……….. Test Location: ……F19 – centre point………………...

PID Reference No: …V36………………………

Atmospheric Description Weather Rising/falling Temperature Pressure (wet/dry/sunny/windy) Day of 1023 Falling 14 Sunny monitoring Week before 1015 Rising 13 Sunny spells and showers (generally)

Relevant Notes

Test carried out on finished concrete levels.

Solvents and Tri and Di Chlorotoluene

Walkover Results Height PPM Height PPM 0.05m 0.0 0.6m 0.0 0.1m 0.0 1.2m 0.0 0.3m 0.0 Overhead 0.0

Tenax Tube Reference (if applicable) GRA 05572 Start Time (H/M/S) 10:12 Finish Time (H/M/S) 12:04

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 11:48 0.0 12:16 0.0 11:49 0.0 12:17 0.0 11:50 0.0 12:22 0.0 11:51 0.0 12:27 0.0 11:52 0.0 12:32 0.0 11:53 0.0 12:37 0.0 11:54 0.0 12:42 0.0 11:55 0.0 12:47 0.0 11:56 0.0 11:57 0.0 11:58 0.0 11:59 0.0 12:00 0.0 12:01 0.0 12:02 0.0 12:03 0.0 12:04 0.0 12:05 0.0 12:06 0.0 12:07 0.0 12:08 0.0 12:09 0.0 12:10 0.0 12:11 0.0 12:12 0.0 12:13 0.0 12:14 0.0 12:15 0.0

Test Complete at (H/M/S) 12:48

Signed IS

Page 2 of 2 FLUX BOX MONITORING

Site Name: Hauxton REF: A166…………… Engineer Name: I Stephenson………..

Site Address: Hauxton, A10 Cambridge Road, CB22 5HT………………………………

Date: …02/11/11……….. Test Location: …………I20………………...

PID Reference No: …V36………………………

Atmospheric Description Weather Rising/falling Temperature Pressure (wet/dry/sunny/windy) Day of 1006 Falling 13 Sunny monitoring Week before 1015 Rising 15 Overcast (generally)

Relevant Notes

Test carried out on finished concrete levels.

Solvents and Tri and Di Chlorotoluene

Walkover Results Height PPM Height PPM 0.05m 0.0 0.6m 0.0 0.1m 0.0 1.2m 0.0 0.3m 0.0 Overhead 0.0

Tenax Tube Reference (if applicable) GRA 08804 Start Time (H/M/S) 13:25 Finish Time (H/M/S) 14:35

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 1 0.0 29 0.0 2 0.0 30 0.0 3 0.0 35 0.0 4 0.0 40 0.0 5 0.0 45 0.0 6 0.0 50 0.0 7 0.0 55 0.0 8 0.0 60 0.0 9 0.0 10 0.0 11 0.0 12 0.0 13 0.0 14 0.0 15 0.0 16 0.0 17 0.0 18 0.0 19 0.0 20 0.0 21 0.0 22 0.0 23 0.0 24 0.0 25 0.0 26 0.0 27 0.0 28 0.0

Test Complete at (H/M/S) 15:40

Signed IS

Page 2 of 2 FLUX BOX MONITORING

Site Name: Hauxton REF: A167…………… Engineer Name: I Stephenson………..

Site Address: Hauxton, A10 Cambridge Road…………….………………………………

Date: …04/11/11……….. Test Location: ……L13……………….………………...

PID Reference No: …V36………………………

Atmospheric Description Weather Rising/falling Temperature Pressure (wet/dry/sunny/windy) Day of 995 Rising 15 Sunny spells/rain monitoring Week before 1015 Falling 15 Sunny spells (generally)

Relevant Notes

Test carried out on finished concrete levels.

Top 10 VOC

Walkover Results Height PPM Height PPM 0.05m 0.0 0.6m 0.0 0.1m 0.0 1.2m 0.0 0.3m 0.0 Overhead 0.0

Tenax Tube Reference (if applicable) MI 023002 Start Time (H/M/S) 12:27 Finish Time (H/M/S) 13:35

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 1 0.0 29 0.0 2 0.0 30 0.0 3 0.0 35 0.0 4 0.0 40 0.0 5 0.0 45 0.0 6 0.0 50 0.0 7 0.0 55 0.0 8 0.0 60 0.0 9 0.0 10 0.0 11 0.0 12 0.0 13 0.0 14 0.0 15 0.0 16 0.0 17 0.0 18 0.0 19 0.0 20 0.0 21 0.0 22 0.0 23 0.0 24 0.0 25 0.0 26 0.0 27 0.0 28 0.0

Test Complete at (H/M/S) 12:20

Signed IS

Page 2 of 2 FLUX BOX MONITORING

Site Name: Hauxton REF: A168…………… Engineer Name: I Stephenson………..

Site Address: Hauxton, A10 Cambridge Road…………….………………………………

Date: …04/11/11……….. Test Location: ……M11……………….………………...

PID Reference No: …V36………………………

Atmospheric Description Weather Rising/falling Temperature Pressure (wet/dry/sunny/windy) Day of 995 Rising 15 Sunny spells/rain monitoring Week before 1015 Falling 15 Sunny spells (generally)

Relevant Notes

Test carried out on finished concrete levels.

Top 10 VOC

Walkover Results Height PPM Height PPM 0.05m 0.0 0.6m 0.0 0.1m 0.0 1.2m 0.0 0.3m 0.0 Overhead 0.0

Tenax Tube Reference (if applicable) GRA 05584 Start Time (H/M/S) 13:38 Finish Time (H/M/S) 13:40

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 1 0.0 29 0.0 2 0.0 30 0.0 3 0.0 35 0.0 4 0.0 40 0.0 5 0.0 45 0.0 6 0.0 50 0.0 7 0.0 55 0.0 8 0.0 60 0.0 9 0.0 10 0.0 11 0.0 12 0.0 13 0.0 14 0.0 15 0.0 16 0.0 17 0.0 18 0.0 19 0.0 20 0.0 21 0.0 22 0.0 23 0.0 24 0.0 25 0.0 26 0.0 27 0.0 28 0.0

Test Complete at (H/M/S) 15:45

Signed IS

Page 2 of 2 FLUX BOX MONITORING

Site Name: ……Hauxton…(REF: A 169)…………… Engineer Name: Nick Denton

Site Address:…Cambridge Road, Hauxton, Cambridge, CB22 5HT

Date: ……21/07/2011 Test Location: Layer 9 - Grid J13, 262 450

PID Reference No: …………V10

Atmospheric Temperature Description Weather Rising/falling Pressure (mb) (oC) (wet/dry/sunny/windy) Slight rise from Day of yesterday 1011 20 Overcast with sunny spells monitoring Steady during day Week before Overcast with sunny spells and

(generally) occasional showers

Relevant Notes Compacted Marl. Marl compacted in accordance with Remediation Method Statement

Walkover Results Height PPM Height PPM

0.05m 0.0 0.6m 0.0

0.1m 0.0 1.2m 0.0

0.3m 0.0 Overhead 0.0

Tenax Tube Reference (if applicable) GRA 09172 Start Time (H/M/S) 11:07:25 Finish Time (H/M/S) 12:24:20

Page 1 of 2 FLUX BOX MONITORING

Flux Box Monitoring Stabilised PID Stabilised PID Reading Time Time Reading (PPM) (PPM) 0 0.0 28 0.0

1 0.0 29 0.0

2 0.0 30 0.0

3 0.0 35 0.0

4 0.0 40 0.0

5 0.0 45 0.0

6 0.0 50 0.0

7 0.0 55 0.0

8 0.0 60 0.0

9 0.0

10 0.0

11 0.0 12 0.0 13 0.0 14 0.0 15 0.0 16 0.0 17 0.0 18 0.0 19 0.0 20 0.0 21 0.0 22 0.0 23 0.0 24 0.0 25 0.0 26 0.0 27 0.0

Test Complete at (H/M/S) 1:00:00

Signed ND

Page 2 of 2 FLUX BOX MONITORING FACTUAL REPORT FORMER BAYER CROPSCIENCE SITE, HAUXTON

Appendix D

907BRI REVA 9 Day of Monitoring Walkover Results (PPM)

Depth from finished surface post REF to Monitoring Date Test Location PID Atmospheric Pressure Rising/Falling Temperature Description Notes crushed concrete placement 0.05m 0.1m 0.3m 0.6m 1.2m Overhead Tenax Ref (if applicable) Start Time Finish Time Protocol Test area fenced off from site traffic using heras panels, moderately windy Sunny with occasional from NW, underlying gault clay has 16/05/2011 (1) H8/H9 V39 1023 Falling 18 showers frequent cracks at surface from drying 5 0 0 0 0 0 0 GCMS 4763 FB1 17.02 16.09 A101 Sunny with occasional light showers, windy Underlying gault clay smooth and rolled 16/05/2011 (2) I10/J10 V39 1023 Falling 18 NW flat with regular small cracks upto 5mm 5.5 0 0 0 0 0 0 GCMS 4763 FB2 17.35 14.52 A102 Test area fenced off from site using heras, light wind, underlying gault clay has frequent cracks at the surface and is Overcast and cloudy commonly fracturing to gravel on 17/05/2011 3 K9 V39 1020 Rising 18 light breeze surface. 5 0.5 0 0 0 0 0 GCMS 4763 FB3 17.47 16.05 A103

Overcast withlight Underlying gaut clay smooth and rolled 17/05/2011 4 J10 V39 1020 Rising 18 wind from NW flat with regular small cracks to 5mm 5 2.1 0 0 0 0 0 GCMS 4763 FB4 17.52 15.45 A104 Underlying gault ahs track marks and is Generally dry but very loose in places with light small (>5mm) 18/05/2011 5 I9 V39 1014 Rising 18 overcast cracking 5.5 0 0 0 0 0 0 GCMS 4763 FB5 17.16 17.25 A105 Generally dry but very Underlying gault rolled flat, dry with 18/05/2011 6 J10 V39 1014 Rising 18 overcast some cracks up to 5mm 5.5 0 0 0 0 0 0 GCMS 4763 FB6 16.55 17.01 A106 Underlying gault clay has been rolled and tracked over. Drying at the surface has resulted in frequent cracks up to 20/05/2011 5 I9 V39 1019 Rising 18 Dry cloudy 5mm wide 5.5 0 0 0 0 0 0 None Taken NA NA A107

Underlying gault clay has been tracked and rolled and the dried surface has 20/05/2011 6 J10 V39 1019 Rising 18 Dry cloudy frequent cracks up to 3mm 5.5 0 0 0 0 0 0 None Taken NA NA A108

Underlying gault clay as before with 23/05/2011 5 I9-I10 V39 1018 Rising 16 Overcast cloudy windy cracking at surface extending to 10mm 5.5 0 0 0 0 0 0 None Taken NA NA A109

Underlying gault clay as before with 23/05/2011 6 K10 V39 1018 Rising 16 Overcast cloudy windy cracking at surface extending to 10mm 5.5 0 0 0 0 0 0 None Taken NA NA A110 Underlying gault has been bladed and rolled and has numerous small cracks at 24/05/2011 7 J11 V108 1025 Stable 15 Clear sky sunny windy the surface 5.5 4.1 0 0 0 0 0 None Taken NA NA A111 Underlying gault clay bladed and rolled, 24/05/2011 8 2K9-J9 V108 1025 Stable 15 Clear sky sunny windy relatively crack/fracture free 5.5 0.7 0 0 0 0 0 None Taken NA NA A112 Test overlying natural gault clay bladed Clear sky, sunny dry, and rolled with surface dried out and 25/05/2011 J10 V108 1022 Stable 15 light wind occasional cracks 5.5 2.6 0 0 0 0 0 None Taken NA NA A113 Clear sky, sunny dry, The underlying gault clay has dried out 25/05/2011 I8 V108 1022 Stable 15 light wind with a sandy/gravelly surface 5.5 1.8 0 0 0 0 0 None Taken NA NA A114 Test overlying natural gault clay which Dry, overcast, cloudy, had been bladed and rolled, surface 25/05/2011 J10 V108 1019 Falling 19 windy drying and cracking 5mm 5.5 1.8 0 0 0 0 0 None Taken NA NA A115

Test overlying natural gault clay which Dry, overcast, cloudy, had been bladed and rolled, surface dry 25/05/2011 I9 V108 1019 Falling 19 windy with loose clay and some cracking 5mm 5.5 0.4 0 0 0 0 0 None Taken NA NA A116 Underlying gault clay has been bladed and rolled, surface is dry and cracking in 25/05/2011 J10 V108 1022 Falling 20 Clear sunny dry windy places 5mm 5.5 11.5 0 0 0 0 0 None Taken NA NA A117 Underlying natural gault clay had been bladed, rolled and was dry with cracking 25/05/2011 I8 V108 1020 Falling 20 Clear sky sunny windy and frequent breaking up 5 2.1 0 0 0 0 0 None Taken NA NA A118 Heavy showers Test overlying natural gault clay, surface 26/05/2011 I9 V108 1003 Steady 16 overcast saturated by recent rain storm 5 4.5 0 0 0 0 0 None Taken NA NA A119 Test overlying natural gault clay bladed Overcast, light wind, and rolled with surface drying and 26/05/2011 I10 V108 1004 Falling 15 sunny spells, showers cracking 5.5 0 0 0 0 0 0 None Taken NA NA A120 Heavy showers Test overlying natural gault clay, surface 26/05/2011 I9 V108 1003 Steady 16 overcast saturated by recent rain storm 5.5 0 0 0 0 0 0 None Taken NA NA A121

Test overlying natural gault clay bladed Occasional showers and rolled surface dried out with 26/05/2011 I9 V108 1004 Falling 14 overcast light wind numerous loose clay and cracking 5.5 8.1 0 0 0 0 0 None Taken NA NA A122 Grid fiill completed 2-3 weeks ago, 10/06/2011 J8 V108 1014 Steady 14 Overcast surface dry and cracking 0.25 0 0 0 0 0 0 MI011044 14.05 16.05 A123 Top layer of marl which was finished filling 3 weeks ago, surface drying with 10/06/2011 I7 V108 1014 Steady 14 Overcast frequent cracks up to 5mm 0.25 0 0 0 0 0 0 MI015132 14.04 16.04 A124 Fill surface damage from previous 13/06/2011 J6 V108 Sunny spells showers 4 17.2 3.1 0.9 0.3 0 0 MI012799 13.30 15.30 A125 Surface dried out from showers a few 14/06/2011 J7 V108 1018 Stable 17 Sunny and warm days ago with some cracking 4 3.1 0 0 0 0 0 MI035157 12.08 14.03 A126 Surface dried out from recent showers 14/06/2011 K8 V108 1018 Stable 17 Sunny with some cracking <3mm 3.5 0.4 0 0 0 0 0 MI0142196 12.05 14.05 A127 17/06/2011 K9 V10 Dry overcast 5.5 0 0 0 0 0 0 MI010907 10.38 11.38 A128 17/06/2011 K10 V10 Overcast dry 5.5 0 0 0 0 0 0 MI038935 10.30 11.30 A129 Gault surface flat and rolled, surface 20/06/2011 J10 V10 1013 Falling 18 Sunny drying with very occasional cracks 5 0 0 0 0 0 0 MI036523 11.00 12.04 A130 Overcast, showers, 18/07/2011 J9 V10 1130 Steady 16 sunny spells Marl top of fill 0.25 0 0 0 0 0 0 GRA01445 16.20 17.42 A131 Overcast with 18/07/2011 K9 V10 910 Steady 15 showers Top of fill marl 0.25 0 0 0 0 0 0 GRA14593 13.48 15.01 A132 Overcast with 18/07/2011 L9 Top of Fill V10 982.5 Steady 15 occasional showers Marl 0.25 0 0 0 0 0 0 MI143655 13.44 14.52 A133 Overcast, showers, Top of fill marl, PID monitoring done 18/07/2011 I9 V10 982 Steady 16 sunny spells 18/7/11, tenax tube done 19/7/11 0.25 0 0 0 0 0 0 MI058214 9.18 10.31 A134 Overcast, showers, 19/07/2011 H7 V10 1002 Steady 23 sunny spells Top of fill marl 0.25 0 0 0 0 0 0 MI042729 15.18 17.25 A135 Sunny turning 19/07/2011 H8 V10 1002 Steady rise 23 overcast Top of fill marl 0.25 0 0 0 0 0 0 MI023008 12.38 13.47 A136 Sunny with cloudy 19/07/2011 H9 V10 1002 Slow rise 23 periods Top of fill marl 0.25 0 0 0 0 0 0 GRA01336 12.34 13.52 A137 Overcast, showers, 19/07/2011 I8 V10 1002 Steady 23 sunny spells Top of fill marl 0.25 0 0 0 0 0 0 MI143647 15.36 17.29 A138 Overcast, sunny 20/07/2011 K11 V10 1008 Steady 20 spells Layer 9 marl 0.25 0 0 0 0 0 0 GRA09700 15.06 16.07 A139 20/07/2011 K12 V10 1008 Steady 20 Cloudy, sunny spells Layer 9 marl 0.25 0 0 0 0 0 0 GRA04899 14.37 16.04 A140 20/07/2011 L11 V10 1008 Steady 20 Overcast Layer 9 marl 0.25 0 0 0 0 0 0 GRA03729 11.26 13.20 A141 20/07/2011 L12 V10 1008 Steady 20 Overcast Layer 9 marl 0.25 0 0 0 0 0 0 MI058513 11.12 13.22 A142 Overcast, sunny Layer 9 marl, PID 20/7/11, tenax tube 20/07/2011 J11 1008 Steady 20 spells 21/7/11 1011mb, steady, 22c 0.25 0 0 0 0 0 0 GRA04296 8.21 10.10 A143 Overcast, sunny Layer 9 marl, PID 20/7/11, tenax tube 20/07/2011 K13 V10 1008 Steady 20 spells 21/7/11 1011mb, steady, 22c 0.25 0 0 0 0 0 0 MI143635 8.25 9.52 A144 Overcast, showers, Gault clay base of excavation, some 21/07/2011 H10 V10 1011 Steady 22 sunny spells cracks 5 0 0 0 0 0 0 GRA01850 16.46 17.47 A145 Overcast, showers, Gault clay base of excavation, some 21/07/2011 H11 V10 1011 Steady 22 sunny spells cracks 5 0.7 0.2 0.2 0.1 0 0 GRA05877 15.41 16.56 A146 Overcast, showers, Gault clay base of excavation, some 21/07/2011 I10 V10 1011 Steady 22 sunny spells cracks 5 0 0 0 0 0 0 MI014095 14.46 15.51 A147 Overcast, showers, 21/07/2011 I11 V10 1011 Steady 22 sunny spells Gault clay cracked base of fill 5 1.4 0.9 0.1 0.2 0.2 0 GRA08649 13.22 14.30 A148 Overcast, showers, 21/07/2011 J12 V10 1011 Steady 22 sunny spells Layer 9 marl 0.25 0 0 0 0 0 0 GRA08874 11.36 12.58 A149 Overcast, sunny Gault base of excavation, bladed, 25/07/2011 G9 V10 spells cracked 4.5 0.6 0.6 0.5 0.5 0.4 0.4 GRA09730 10.57 11.59 A150 Overcast, sunny Gault clay, base of excavation, ground 25/07/2011 G10 V10 spells cracked <5mm 4.5 0.2 0.1 0.1 0.1 0 0 GRA01964 9.31 10.58 A151 gault clay, base of excavation, area Overcast, sunny bladed flat, heavily cracked/dessicated 25/07/2011 H7 V10 spells cracks <5mm 4.5 0.3 0.1 0 0 0 0 GRA05820 14.51 15.49 A152 gault clay, base of excavation, area Overcast, sunny bladed flat, heavily cracked cracks max 25/07/2011 H8 V10 spells 5mm 5 0.8 0.3 0.1 0 0 0 GRA09773 13.07 14.14 A153 Patchy cloud, dry light Base of excavation gault clay, rolled. 12/08/2011 H8 V108 987 Falling 19 wind Tenax tube test only 5 1.3 0.2 GRA05529 14.50 15.50 A154 Patchy cloud, dry light Base of excavation gault clay, rolled. 12/08/2011 H7 V108 987 Falling 19 wind Tenax tube test only 4.5 1.5 0.3 GRA05858 13.40 14.40 A155 06/09/2011 G14 Gault Base V108 17 Wet 4.5 0.1 0.1 0 0 0 0 G14 06/09/11 12.21 13.21 A156

Unpleasant smell on gault, precautionary flux box test on backfill likely to occur 12/09/2011 G13 V36 Sunny/windy before results come back 4.5 0 0 0 0 0 0 GRA08674 13.50 15.05 A157 Zone 1 final layer marl, sample for 6 27/09/2011 G10 V36 1027 12 Overcast solvent 0.25 0 0 0 0 0 0 GRA01121 9.55 10.35 A158 Zone 1 final layer marl, sample for 6 27/09/2011 G9 V36 1027 12 Overcast solvent 0.25 0 0 0 0 0 0 GRA03428 9.57 10.57 A159

28/09/2011 G8 V36 1026 Steady 26 Sunny Zone 1 top layer, sample for 6 solvents 0.25 0 0 0 0 0 0 GRA04296 12.38 14.08 A160

28/09/2011 H7 V36 1026 Steady 26 Sunny Zone 1 top layer, sample for 6 solvents 0.25 0 0 0 0 0 0 GRA09722 13.15 14.15 A161 Test performed on top of finished concrete layer, solvents tri and di 18/10/2011 E19 Centre Point V36 1008 Rising 8 Sunny chlorotoluene 0.25 0 0 0 0 0 0 GRA05842 9.06 10.08 A162 Test carried out on finished concrete 28/10/2011 G20 V36 1023 Falling 14 Sunny levels, solvents tri and di chlorotoluene 0.25 0 0 0 0 0 0 GRA04560 12.09 14.14 A163 Test carried out on finished concrete 28/10/2011 H20 V36 1023 Falling 14 Sunny levels, solvents tri and di chlorotoluene 0.25 0 0 0 0 0 0 GRA05547 14.19 15.51 A164 Test performed on top of finished concrete layer, solvents tri and di 28/10/2011 F19 Centre Point V36 1023 Falling 14 Sunny chlorotoluene 0.25 0 0 0 0 0 0 GRA05572 10.12 12.04 A165 Test carried out on finished concrete 02/11/2011 I20 V36 1006 Falling 13 Sunny levels, solvents tri and di chlorotoluene 0.25 0 0 0 0 0 0 GRA08804 13.25 14.35 A166 Test carried out on finished conrete 04/11/2011 L13 V36 995 Rising 15 Sunny spells and rain layer, top 10 VOC 0.25 0 0 0 0 0 0 MI023002 12.27 13.35 A167 Test carried out on finished conrete 04/11/2011 M11 V36 995 Rising 15 Sunny spells and rain layer, top 10 VOC 0.25 0 0 0 0 0 0 GRA05584 13.38 13.40 A168 Overcast, showers, 21/07/2012 J13 V10 1011 Steady 22 sunny spells Layer 9 marl 0.25 0 0 0 0 0 0 GRA09172 11.07 12.24 A169 Time (minutes) - all Flux Box test results in ppm Date Location 1 23456789101112131415161718192021222324252627282930354045505560 28/10/2011 G20 000000000000000000000000000000000000 28/10/2011 H20 000000000000000000000000000000000000 02/11/2011 I20 000000000000000000000000000000000000 18/10/2011 E19 Centre Point 000000000000000000000000000000000000 28/10/2011 F19 Centre Point 000000000000000000000000000000000000 04/11/2011 L13 000000000000000000000000000000000000 04/11/2011 M11 000000000000000000000000000000000000 27/09/2011 G10 000000000000000000000000000000------27/09/2011 G9 000000000000000000000000000000000000 28/09/2011 G8 000000000000000000000000000000000000 28/09/2011 H7 000000000000000000000000000000000000 12/09/2011 G13 000000000000000000000000000000000000 06/09/2011 G14 Gault Base 0.1 0.1 0 0.1 000000000000.100.10.10.10.10.10.10.100.20.10.20.10.30.30.40.70.60.80.8 18/07/2011 J9 000000000000000000000000000000000000 18/07/2011 K9 000000000000000000000000000000000000 18/07/2011 L9 Top of Fill 000000000000000000000000000000000000 18/07/2011 I9 000000000000000000000000000000000000 19/07/2011 H7 00000000000000000000000000000000000 19/07/2011 H8 000000000000000000000000000000000000 19/07/2011 H9 0 0.5 0000000000000000000000000000000000 19/07/2011 I8 000000000000000000000000000000000000 20/07/2011 K11 000000000000000000000000000000000000 20/07/2011 K12 000000000000000000000000000000000000 20/07/2011 L11 000000000000000000000000000000000000 20/07/2011 L12 000000000000000000000000000000000000 20/07/2011 J11 000000000000000000000000000000000000 20/07/2011 K13 000000000000000000000000000000000000 21/07/2011 H10 00000000000.1000000000000000000000000.10 21/07/2011 H11 2.5 3.3 3.9 3.3 4.2 4.9 5.3 5.5 6.1 6.6 6.6 7.3 7.7 7.9 9.4 7.3 6.7 7.5 7.5 7.4 7.4 7.4 6.9 6.8 6.8 6.8 6.5 6.1 5.6 5.4 7.3 6.4 6.5 6.5 6.8 7.2 21/07/2011 I10 00000000000000000000000000000000.90.70.40.30.3 21/07/2011 I11 3.2 3.2 3.4 3.5 3.7 4 4.1 4.1 4 3.8 3.5 3.5 3.6 3.6 3.6 3.4 3.4 3.6 44445.85.65.25.25.45.95.65.953.86.77.89.88.2 21/07/2011 J12 000000000000000000000000000000000000 21/07/2012 J13 000000000000000000000000000000000000 25/07/2011 G9 9 9.4 10.4 9.1 9.1 17.7 17.1 14.6 15.8 18.3 18.2 18.9 18.3 18.6 20.2 22.6 19.3 21.7 23.2 23.1 22.2 3.3 0.9 1 0.8 0.8 0.9 0.8 1.8 1.2 0.5 0.3 0.2 0.4 0.3 0.3 25/07/2011 G10 122 104 103 88.6 87.3 96.7 75.1 87.8 82.1 73.7 67.7 78 72 57.4 46.6 52.1 48.5 49.4 44.1 34.4 42.8 42.7 36.3 25.3 27.2 21.4 22.6 21.3 21.4 28.7 21.7 26.4 25.8 22 21.1 21.4 25/07/2011 H7 7.3 7.9 0.2 000000008.30.100008.299.810.5 11.2 11.6 11.8 11.9 0.1 1.5 0.2 0.4 0.4 0.2 0.2 0 0 0.2 0 25/07/2011 H8 2.9 3 3.4 3.4 3.2 3.5 3.7 3.7 3.9 4 3 3 3.8 4 4.4 4.1 3.4 2.9 2.8 2.6 2.5 2.6 2.9 2.9 3.1 3.7 3.7 4.4 4.3 3.9 3.6 3.5 3.1 2.6 2.6 2.6 20/06/2011 J10 19.9 16.1 32.1 21.3 0.9 23.4 21.7 15.9 17.3 22.1 1845 21.3 0.5 0.8 0.7 0.9 1.2 0.6 0.8 1 0.7 0.9 1.2 0.7 0.7 0.7 0.6 0.7 0.8 0.8 1.1 1 0.9 4.7 1.1 1.3 17/06/2011 K9 000000000000000000000000000000000000 17/06/2011 K10 0.3 0.2 0.1 0.3 0.4 0.2 0.2 0.3 0.2 0.1 0.2 0.2 0.1 0.1 0.2 0.1 0.1 0.1 0.2 0.1 0.1 0.2 0.3 0.2 0.2 0.2 0.1 0.3 0.2 0.2 0.1 0.3 0.4 0.3 0.2 0.2 13/06/2011 J6 0.4 0.1 0.6 0.9 2.1 2.8 3.5 3.8 3.9 4.6 4.9 5.3 4.3 4.7 4.1 2.6 0.9 0.8 0.5 0.3 0.8 0.9 6.9 8.5 9.7 10.7 11.5 12.2 14.2 23.9 31.6 33.7 32.7 33 34.1 31.6 14/06/2011 J7 0.3 0.4 1.7 2.1 2.6 5.3 18.3 11.9 10.2 13.1 16.3 14.1 19.1 23.1 21.2 25.3 27.9 29.2 25 24.3 9.6 14.7 23 15.5 23.8 4.7 11.3 10.7 12.1 14.8 39.8 38.4 39.9 22.6 0.4 0.2 14/06/2011 K7 9.1 12.3 17.6 15.1 8.8 9.3 10.7 11.4 13.6 13.8 16.4 21.2 17.3 13.9 21.2 27.3 29.1 25.8 28.3 35.3 39.7 43.2 41.8 39.6 37.3 42.2 39.3 37.9 40.7 39.1 2.3 39.8 2.8 0.5 0.4 8.1 10/06/2011 J8 00000000.10.10.10.20.10.20.20.20.30.20.20.30.30.30.30.30.40.30.40.40.50.60.71.11.72.30.71.11 10/06/2011 I7 0.1 0.1 0.1 0.1 0.2 0.2 0.2 0.2 0.2 0.1 0.2 0.2 0.2 0.2 0.3 0.3 0.4 0.3 0.4 0.4 0.5 0.4 0.5 0.5 0.6 0.5 0.6 0.6 0.7 0.7 1.4 0.9 0.7 0.6 0.9 0.7 26/05/2011 I9 12.1 13.9 11.8 12.3 12.2 12.5 12.8 12.3 12.4 12.4 12.5 12.1 12.2 12.5 12.5 12.7 12.9 13.3 13.5 13.4 13.3 13.3 13.2 13.1 13 13 13.1 13.2 12.9 13.1 13 12.8 12.7 12.9 13.2 12.9 26/05/2011 I10 6.2 6.1 5.9 6.3 6.2 6.1 6.1 6.3 5.7 5.8 5.9 6 6.2 6.3 6.1 6.2 6.3 6.1 6.5 7.1 6.7 6.9 7.1 7 7.1 7.2 7.4 7.4 7.5 7.4 7.2 7.2 7.1 7 6.8 6.7 26/05/2011 I9 6.1 6 5.8 5.9 6 6.1 6.3 5.9 5.8 5.9 5.7 5.8 5.8 5.8 6.2 6.1 6.3 6.4 6.1 5.8 5.9 6.1 6.3 6.1 6 6.2 6.3 5.9 6.2 6.4 5.9 6.3 6.2 6.1 6.1 5.9 26/05/2011 I9 2.7 3.1 3.3 3.9 3.8 4 3.8 4.1 4.3 4.8 4.7 4.7 4.3 4.4 4.4 4.4 4.4 3.5 3.7 3.8 4.1 4 3.8 4 3.9 4.2 5 4.7 4.8 4.2 3.7 3.9 3.7 4.2 4.6 5.5 25/05/2011 J10 234 238 241 239 245 227 224 223 205 213 209 198 204 214 210 197 192 183 181 180 173 171 173 170 171 157 156 150 147 148 148 145 138 129 139 119 25/05/2011 I8 47.3 3.92 41.3 40.1 39.3 38.7 42.3 43.1 38.8 39.3 36.7 35.4 37.4 37.1 33.2 35.2 36.8 34.9 33 31.5 29.8 29.1 28.1 26.6 26.9 24.9 24.4 22.1 22 19.7 19.9 19.3 17.2 16.8 15.3 15.5 25/05/2011 J10 10 10.1 10 10 9.9 10 10.2 10.4 10.5 10.3 10.4 10.5 10.6 10.8 10.6 10.2 10.1 10 10.1 10.2 10.2 9.9 10.3 10.2 10.4 10.6 9.9 10.1 10.2 10.4 10.2 10.7 10.2 10.6 10.4 10.6 25/05/2011 I9 3 3.3 3.6 3.7 3.8 3.7 3.2 3.4 3.5 3.6 4.2 4.4 4.6 4.4 4.4 4.4 4.5 4.4 4.4 4.6 4.6 4.6 4.7 4.8 4.9 4.8 4.9 5.1 5.1 5.2 5.2 5.1 5.2 5.4 5.4 5.6 25/05/2011 J10 24.5 24.3 23.8 23.3 22.5 23.3 22.8 23 23.2 24.1 25.6 24.8 26.2 27.3 28.1 28 28.3 27.8 27.5 28.1 27.6 27.4 27.1 27.2 26.9 26.8 29.1 28.4 28.5 28.8 27.1 25.3 23.5 21.2 21.1 22.6 25/05/2011 I8 6.6 7.5 5.3 4.9 5.3 5.1 5.3 5.6 5.8 7.7 4.8 5.3 5.8 6.1 4.9 4.8 4.7 4.4 5.2 5.4 5.5 5.3 5.1 4.8 5.2 5.1 5 5.3 5 5.1 4.8 5.1 6.2 6.5 6.9 6.8 24/05/2011 7 21.2 24.4 20.1 23.8 23.6 25.9 26 26.8 27.7 29.7 27.2 27.2 28 27.7 28.5 29.1 28.3 31.6 31.8 28.6 28.9 30.7 31.8 31.9 32.5 31.9 31.9 32.1 32.4 35.6 37.5 41.1 38.3 40.1 35.8 24/05/2011 8 4 3.9 3.7 3.9 3.7 3.9 3.6 4.1 3.8 3.7 3.5 2.8 2.7 3 3 3.2 2.6 2.8 2.5 2.9 2.9 2.9 2.6 2.6 3 2.9 2.5 2.6 2.6 2.5 3.2 2.7 2.8 3.1 2.9 2.6 23/05/2011 5 0000000.100000000000000000000000000.2000 23/05/2011 6 000000000000000000000000000000000000 20/05/2011 5 0000000000000000000000000000000.600000 20/05/2011 6 000000000000000000000000000000000000 18/05/2011 5 0000000000------18/05/2011 6 0000000000000000000000000000.20.10000000 17/05/2011 3 00000000000000000000000000000000.30.40.200 17/05/2011 4 000000000000000000000000000000.10.300000 16/05/2011 1 0000000000000000000000000000000.30.30.80.60.20.3 16/05/2011 2 00000000000000000000000000000000.200.40.30.1 FLUX BOX MONITORING FACTUAL REPORT FORMER BAYER CROPSCIENCE SITE, HAUXTON

Appendix E

907BRI REVA 10

Hauxton Post-Remediation Human Health Risk Assessment

G.4. Comparison of Vapour Results to UKRfC and Attenuation Factor

Appendix G 4: Summary of Vapour Chemical Data

Table 1a: Summary of Vapour Chemical Data, Shallow (2011)

Sample ID L7 L8 K7 J8 I7 J9 K9 L9 H7 H8 H9 I8 I9 K11 K12 L11 L12 J11 J12 J13 K13 L13 M11 Sampled Date NA NA NA 10/06/2011 10/06/2011 18/07/2011 18/07/2011 18/07/2011 19/07/2011 19/07/2011 19/07/2011 19/07/2011 18/07/2011 20/07/2011 20/07/2011 20/07/2011 20/07/2011 20/07/2011 21/07/2011 21/07/2012 20/07/2011 04/11/2011 04/11/2011 Depth NA NA NA 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25

Assessment No. of Minimum Maximum HCV Attenuation Criterion Surrogate Nature (Ali/Aro) Compound Units detects Value Value (µg/m³) Factor (µg/m³) L7 L8 K7 J8 I7 J9 K9 L9 H7 H8 H9 I8 I9 K11 K12 L11 L12 J11 J12 J13 K13 L13 M11 Aro m/p-xylene µg/m³ 6 0.75 32.71 1.84E+02 1.90E-03 9.69E+04 0.83 0.92 Aro toluene µg/m³ 2 1.17 1.89 4.80E+03 1.90E-03 2.53E+06 1.17 1.89 Aro o-xylene µg/m³ 4 7.14 11.3 1.84E+02 1.90E-03 9.69E+04 TPH Ali nonane µg/m³ 1 2.41 2.41 4.99E+02 1.90E-03 2.63E+05 2.41 TPH Ali tetradecane µg/m³ 1 1.43 1.43 4.99E+02 1.90E-03 2.63E+05 1.43 TPH Ali dodecane µg/m³ 1 1.23 1.23 4.99E+02 1.90E-03 2.63E+05 1.23 1,2-dichloroethane NA 1,2-dichloro-3-methylbenzene µg/m³ 5 0.37 0.51 1.90E-03 9.66E-04 1,2-dichloroethane NA 1,2,4-trichloro-3-methylbenzene µg/m³ 5 <1 <1 4.20E-01 1.90E-03 2.22E+02 NA cis-1,2-dichloroethene µg/m³ 30 0.81 15.75 1.99E+01 1.90E-03 1.05E+04 <1 5.03 1.61 1.19 2.83 <1 7.53 15.75 <1 <1 0.81 <1 6.29 <1 <1 <1 <1 <1 <1 5.98 <1 NA trichlorethene µg/m³ 30 0.81 673 1.82E+01 1.90E-03 9.60E+03 <1 44.1 161.45 14.31 8.26 4.4 18.8 55.69 <1 13.62 89.46 <1 673 <1 <1 <1 <1 7.72 <1 68.71 <1 NA tetrachloroethene µg/m³ 31 0.77 12334 2.11E+02 1.90E-03 111229.92 8.26 3543 12334 451 239 84.42 248.64 1597 <1 <1 217.78 <1 750 2.68 <1 <1 <1 27.57 2.58 221.53 <1 1.08 NA 1,2-dichloroethane µg/m³ 30 1.11 167 4.20E-01 1.90E-03 2.22E+02 <1 56 167 5.81 13.05 <1 2.21 9.61 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 1.11 <1 NA vinyl chloride µg/m³ 30 0 0 1.05E+00 1.90E-03 5.54E+02 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 Aro benzene µg/m³ 2 1.39 5.69 4.90E+00 1.90E-03 2.59E+03 5.69 1.39 NA acetone µg/m³ 2 3.89 13.76 2.97E+04 1.90E-03 1.57E+07 13.76 3.89 TPH Ali 2,2,4,6,6-pentamethylheptane µg/m³ 1 7.83 7.83 4.99E+02 1.90E-03 2.63E+05 7.83 TPH aromatics sum 4.99E+02 1.90E-03 2.63E+05 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7.69 4.2 TPH aliphatic sum 9.98E+01 1.90E-03 3.93E+05 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 12.9 0 Appendix G 4: Summary of Vapour Chemical Data

Table 1a: Summary of Vapour Chemical Data, Shallow (2011)

Sample ID H7 G8 G9 G10 G20 H20 I20 E19 F19 Sampled Date 28/09/2011 28/09/2011 27/09/2011 27/09/2011 28/10/2011 28/10/2011 02/11/2011 18/10/2011 28/10/2011 Depth 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25

Assessment No. of Minimum Maximum HCV Attenuation Criterion Surrogate Nature (Ali/Aro) Compound Units detects Value Value (µg/m³) Factor (µg/m³) H7 G8 G9 G10 G20 H20 I20 E19 F19 Aro m/p-xylene µg/m³ 6 0.75 32.71 1.84E+02 1.90E-03 9.69E+04 23.07 <1 32.71 0.75 Aro toluene µg/m³ 2 1.17 1.89 4.80E+03 1.90E-03 2.53E+06 Aro o-xylene µg/m³ 4 7.14 11.3 1.84E+02 1.90E-03 9.69E+04 11.3 <1 7.14 <1 TPH Ali nonane µg/m³ 1 2.41 2.41 4.99E+02 1.90E-03 2.63E+05 TPH Ali tetradecane µg/m³ 1 1.43 1.43 4.99E+02 1.90E-03 2.63E+05 TPH Ali dodecane µg/m³ 1 1.23 1.23 4.99E+02 1.90E-03 2.63E+05 1,2-dichloroethane NA 1,2-dichloro-3-methylbenzene µg/m³ 5 0.37 0.51 1.90E-03 9.66E-04 0.5 0.51 <1 <1 0.37 1,2-dichloroethane NA 1,2,4-trichloro-3-methylbenzene µg/m³ 5 <1 <1 4.20E-01 1.90E-03 2.22E+02 <1 <1 <1 <1 <1 NA cis-1,2-dichloroethene µg/m³ 30 0.81 15.75 1.99E+01 1.90E-03 1.05E+04 1.27 <1 <1 <1 <1 <1 <1 <1 <1 NA trichlorethene µg/m³ 30 0.81 673 1.82E+01 1.90E-03 9.60E+03 28.75 1.08 75.53 <1 1.01 0.81 <1 <1 <1 NA tetrachloroethene µg/m³ 31 0.77 12334 2.11E+02 1.90E-03 111229.92 224.82 <1 10591 6.03 9.52 12.1 0.77 8.43 7.2 NA 1,2-dichloroethane µg/m³ 30 1.11 167 4.20E-01 1.90E-03 2.22E+02 1.57 <1 <1 <1 <1 <1 <1 <1 <1 NA vinyl chloride µg/m³ 30 0 0 1.05E+00 1.90E-03 5.54E+02 <1 <1 <1 <1 <1 <1 <1 <1 <1 Aro benzene µg/m³ 2 1.39 5.69 4.90E+00 1.90E-03 2.59E+03 NA acetone µg/m³ 2 3.89 13.76 2.97E+04 1.90E-03 1.57E+07 TPH Ali 2,2,4,6,6-pentamethylheptane µg/m³ 1 7.83 7.83 4.99E+02 1.90E-03 2.63E+05 TPH aromatics sum 4.99E+02 1.90E-03 2.63E+05 34.37 0 39.85 0.75 0 0 0 0 0 TPH aliphatic sum 9.98E+01 1.90E-03 3.93E+05 0 0 0 0 0 0 0 0 0 Appendix G 4: Summary of Vapour Chemical Data

Table 1b: Summary of Vapour Chemical Data, Shallow (2013) Location H8 H/I10 I9 L10 H15 E/F19 Sample ID FB1 FB2 FB3 FB4 FB5 FB6 Sampled Date 26/02/2013 26/02/2013 18/03/2013 18/03/2013 18/03/2013 18/03/2013 Depth 0.25 0.25 0.25 0.25 0.25 0.25

Assessment No. of Minimum Maximum HCV Attenuation Criterion Surrogate Nature (Ali/Aro) Compound Units detects Value Value (µg/m³) Factor (µg/m³) FB1 FB2 FB3 FB4 FB5 FB6 Aro toluene µg/m³ 2 0.83 9.01 4.80E+03 1.90E-03 2.53E+06 9.01 0.83 Aro 1,2,4-trimethylbenzene µg/m³ 2 7.25 7.53 3.50E+00 1.90E-03 1.85E+03 7.53 7.25 NA limonene µg/m³ 0 0 0 2.31E+02 1.90E-03 1.22E+05 TPH Ali 3,7-dimethyldecane µg/m³ 0 0 0 4.99E+02 1.90E-03 2.63E+05 TPH Ali decane µg/m³ 4 1.08 22 4.99E+02 1.90E-03 2.63E+05 22 15 1.08 7.85 TPH Ali 2,2,4,6,6-pentamethylheptane µg/m³ 6 43.34 159.64 4.99E+02 1.90E-03 2.63E+05 142 119 43.34 159.64 153.6 100.09 NA 1,2,3-trichloro-4-methylbenzene µg/m³ 0 0 0 1.00E-04 1.90E-03 5.28E-02 1-Hexanol, 2-ethyl- µg/m³ 6 2.48 58.77 Unknown 1.90E-03 #VALUE! 35 25 2.48 40.38 34.96 58.77 TPH (C8-10) Ali 2,2,4,4-Tetramethyloctane + µg/m³ 6 6.18 43.27 4.99E+02 1.90E-03 2.63E+05 32 25 6.18 43.27 40.45 27.09 TPH (C8-10) Ali Decane, 2,6, 8-trimethyl- + µg/m³ 2 18 24 4.99E+02 1.90E-03 2.63E+05 24 18 TPH (C8-10) Ali Undecane µg/m³ 5 7.97 13.18 4.99E+02 1.90E-03 2.63E+05 13.18 7.97 9.96 8.99 9.68 Propanol, methoxy-, acetate + µg/m³ 2 7.24 10.07 Unknown 1.90E-03 #VALUE! 10.07 7.24 TPH (C8-10) Ali Decane, 3,3, 4-trimethyl- + µg/m³ 6 1.28 11.04 4.99E+02 1.90E-03 2.63E+05 8.3 6.23 1.28 11.04 10.24 7.4 TPH (C8-10) Ali Decane, 5,6-dipropyl- + µg/m³ 4 6.42 19.4 4.99E+02 1.90E-03 2.63E+05 6.42 11.32 8.7 19.4 TPH Aro Cyclohexane, butyl- + µg/m³ 1 5.68 5.68 9.98E+01 1.90E-03 5.27E+04 5.68 Tetrachloroethene NA Tetrachloroethylene µg/m³ 1 6.63 6.63 2.11E+02 1.90E-03 1.11E+05 6.63 TPH (C8-10) Ali Octane, 3,5-dimethyl-• µg/m³ 4 4.02 28.97 4.99E+02 1.90E-03 2.63E+05 4.02 28.97 26.98 16.59 TPH (C8-10) Ali Decane, 2,6,7-trimethyl-+ µg/m³ 4 3.29 27.16 4.99E+02 1.90E-03 2.63E+05 3.29 27.16 25.06 15.8 TPH (C8-10) Ali Decane, 2,2-dimethyl-+ µg/m³ 1 0.87 0.87 4.99E+02 1.90E-03 2.63E+05 0.87 TPH (C8-10) Ali Heptane, 2,2-dimethyl-+ µg/m³ 1 0.83 0.83 4.99E+02 1.90E-03 2.63E+05 0.83 1-Methoxy-2-propyl acetate· µg/m³ 3 5.41 9.07 Unknown 1.90E-03 #VALUE! 9.07 8.45 5.41 TPH aromatics sum µg/m³ 4.99E+02 1.90E-03 1.11E+08 32 31.63 6.18 43.27 40.45 27.09 TPH aliphatic sum µg/m³ 9.98E+01 1.90E-03 1.66E+08 22 15 1.91 7.85 0 0

60 Appendix G 4: Summary of Vapour Chemical Data

Table 1c: Summary of Vapour Chemical Data, Deep (2011) h8/h9 I10/J10 K9 J10 I9 J10 Sample ID FB1 FB2 FB3 FB4 FB5 FB6 L7 L8 K7 K8 J6 J7 H10 H11 I10 I11 G9 G10 H7 Sampled Date 16/05/2011 16/05/2011 17/05/2011 17/05/2011 18/05/2011 18/05/2011 17/06/2011 17/06/2011 17/06/2011 14/06/2011 13/06/2011 14/06/2011 21/07/2011 21/07/2011 21/07/2011 21/07/2011 25/07/2011 25/07/2011 25/07/2011 Depth 5 5.5 5 5 5.5 5.5 NA NA NA 3.5 4 4 5 5 5 5 4.5 4.5 4.5

No. of Minimum Maximum HCV Attenuation Assessment Surrogate Nature (Ali/Aro) Determinand Units detects Value Value (µg/m³) Factor Criterion (µg/m³) FB1 FB2 FB3 FB4 FB5 FB6 L7 L8 K7 K8 J6 J7 H10 H11 I10 I11 G9 G10 H7 chlorobenzene NA 1-chloro-2-methyl-benzene µg/m³ 4 263 3020 4.83E+02 4.50E-06 1.07E+08 263 833 3020 1162 1,2-dichloroethane NA 1,4-dichloro-2-methyl-benzene µg/m³ 3 100 368 4.20E-01 4.50E-06 9.33E+04 159 100 368 Aro m/p-xylene µg/m³ 4 109 596 1.84E+02 4.50E-06 4.08E+07 109 166 596 133 chlorobenzene/10 NA 1,3,5-trichlorobenzene µg/m³ 3 22.31 92 4.83E+01 4.50E-06 1.07E+07 92 81 22.31 1,2-dichloroethane NA 1,3,5-trichloro-4-methylbenzene µg/m³ 1 92 92 4.20E-01 4.50E-06 9.33E+04 92 1,2-dichloroethane NA 1,3-dichloro-5-methylbenzene µg/m³ 4 36 2329 4.20E-01 4.50E-06 9.33E+04 56 36 2329 152 Aro Naphthalene µg/m³ 3 20.93 1083 2.48E+00 4.50E-06 5.52E+05 20.93 1083 772 Aro 1,2,4-trimethylbenzene µg/m³ 3 18.6 171 3.50E+00 4.50E-06 7.78E+05 18.6 171 34 TPH NA 3,3,5-trimethyl-cyclohexanone µg/m³ 2 88 116 9.98E+01 4.50E-06 2.22E+07 88 116 TPH Aro 1-ethyl-3-methylbenzene µg/m³ 2 37 127 9.98E+01 4.50E-06 2.22E+07 37 127 1,2,4-trimethylbenzene Aro 1,3,5-trimethylbenzene µg/m³ 3 30.85 78 3.50E+00 4.50E-06 7.78E+05 30.85 78 31 naphthalene Aro 2-methylnaphthalene µg/m³ 2 1262 1784 2.48E+00 4.50E-06 5.52E+05 1784 1262 naphthalene Aro 1-methylnaphthalene µg/m³ 2 1412 1724 2.48E+00 4.50E-06 5.52E+05 1724 1412 naphthalene Aro 2,7-dimethylnaphthalene µg/m³ 2 1047 1188 2.48E+00 4.50E-06 5.52E+05 1188 1047 naphthalene Aro 1,6-dimethylnaphthalene µg/m³ 2 921 1048 2.48E+00 4.50E-06 5.52E+05 1048 921 naphthalene Aro 2,6-dimethylnaphthalene µg/m³ 2 504 584 2.48E+00 4.50E-06 5.52E+05 584 504 naphthalene Aro 1,4-dimethylnaphthalene µg/m³ 2 460 504 2.48E+00 4.50E-06 5.52E+05 504 460 naphthalene Aro 2,3-dimethylnaphthalene µg/m³ 2 455 495 2.48E+00 4.50E-06 5.52E+05 495 455 biphenyl NA 2-methylbenzo[b]thiophene µg/m³ 2 358 433 1.33E+02 4.50E-06 2.95E+07 433 358 NA biphenyl µg/m³ 2 370 405 1.33E+02 4.50E-06 2.95E+07 405 370 biphenyl NA 5-methylnbenzo[b]thiophene µg/m³ 2 275 325 1.33E+02 4.50E-06 2.95E+07 325 275 naphthalene Aro 1-ethylnaphthalene µg/m³ 2 292 318 2.48E+00 4.50E-06 5.52E+05 318 292 naphthalene Aro 4,7-dimethyl-1H-indene µg/m³ 2 287 303 2.48E+00 4.50E-06 5.52E+05 303 287 biphenyl NA 2-benzothiophene µg/m³ 1 283 283 1.33E+02 4.50E-06 2.95E+07 283 biphenyl NA 3,5-dimethylbenzo[b]thiophene µg/m³ 2 222 237 1.33E+02 4.50E-06 2.95E+07 237 222 chlorobenzene/10 NA 1,2,4-trichlorobenzene µg/m³ 2 45 333 4.83E+01 4.50E-06 1.07E+07 333 45 1,2-dichloroethane NA 1,3-dichloro-2-chloromethylbenzeneµg/m³ 2 35 257 4.20E-01 4.50E-06 9.33E+04 257 35 1,2-dichloroethane NA 1,2-dichloro-3-methylbenzene µg/m³ 2 24.95 207 4.50E-06 9.32E-04 207 24.95 1,2-dichloroethane NA 2,4-dichloro-1-chloromethylbenzeneµg/m³ 2 20.28 107 4.20E-01 4.50E-06 9.33E+04 107 20.28 naphthalene Aro 1,6,7-trimethylnaphthalene µg/m³ 1 221 221 2.48E+00 4.50E-06 5.52E+05 221 1,2-dichloroethane NA 1,2,4-trichloro-3-methylbenzene µg/m³ 2 96 523 4.20E-01 4.50E-06 9.33E+04 523 96 NA cis-1,2-dichloroethene µg/m³ 18 0.33 443.03 1.99E+01 4.50E-06 4.42E+06 <1 5.03 1.61 <1 0.6 0.33 <1 <1 <1 9.14 109.02 38.69 116.63 NA trichlorethene µg/m³ 19 0.82 7153 1.82E+01 4.50E-06 4.04E+06 17.34 <1 44.1 161.45 16.41 22.52 33.89 34.09 2.77 0.82 1786 2095 2037.22 363 NA tetrachloroethene µg/m³ 24 8.26 101335 2.11E+02 4.50E-06 4.68E+07 1780 345 1941 1492 1825 309 8.26 3543 12334 4862 2015 2675 75.76 356 <1 101335 5040 2827.23 4860 NA 1,2-dichloroethane µg/m³ 19 2.4 2204 4.20E-01 4.50E-06 9.33E+04 23.12 <1 56 167 8.38 41.58 12.3 <1 2.4 <1 1657 683 8.08 <1 NA vinyl chloride µg/m³ 18 16.25 249.55 1.05E+00 4.50E-06 2.33E+05 <1 <1 <1 <1 <1 <1 16.68 <1 <1 67.72 16.25 <1 226.46 Aro benzene µg/m³ 2 67.73 212.75 4.90E+00 4.50E-06 1.09E+06 chlorobenzene/10 NA 1,2,3-trichloro-4-methylbenzene µg/m³ 1 79 79 4.83E+01 4.50E-06 1.07E+07 79 TPH aromatics sum 4.99E+02 4.50E-06 1.11E+08 256.77 233.85 9491 1402 8215 363 0 0 0 0 0 0 0 0 0 0 0 0 0 TPH aliphatic sum 9.98E+01 4.50E-06 1.66E+08 200 866.14 928 0 542 419.08 0 0 0 0 0 0 0 0 0 0 0 0 0 Appendix G 4: Summary of Vapour Chemical Data

Table 1c: Summary of Vapour Chemical Data, Deep (2011)

Sample ID H8 H7 H8 G13 G14 Sampled Date 25/07/2011 12/08/2011 12/08/2011 12/09/2011 06/09/2011 Depth 5 5 4.5 4.5 4.5

No. of Minimum Maximum HCV Attenuation Assessment Surrogate Nature (Ali/Aro) Determinand Units detects Value Value (µg/m³) Factor Criterion (µg/m³) H8 H7 H8 G13 G14 chlorobenzene NA 1-chloro-2-methyl-benzene µg/m³ 4 263 3020 4.83E+02 4.50E-06 1.07E+08 1,2-dichloroethane NA 1,4-dichloro-2-methyl-benzene µg/m³ 3 100 368 4.20E-01 4.50E-06 9.33E+04 Aro m/p-xylene µg/m³ 4 109 596 1.84E+02 4.50E-06 4.08E+07 chlorobenzene/10 NA 1,3,5-trichlorobenzene µg/m³ 3 22.31 92 4.83E+01 4.50E-06 1.07E+07 1,2-dichloroethane NA 1,3,5-trichloro-4-methylbenzene µg/m³ 1 92 92 4.20E-01 4.50E-06 9.33E+04 1,2-dichloroethane NA 1,3-dichloro-5-methylbenzene µg/m³ 4 36 2329 4.20E-01 4.50E-06 9.33E+04 Aro Naphthalene µg/m³ 3 20.93 1083 2.48E+00 4.50E-06 5.52E+05 Aro 1,2,4-trimethylbenzene µg/m³ 3 18.6 171 3.50E+00 4.50E-06 7.78E+05 TPH NA 3,3,5-trimethyl-cyclohexanone µg/m³ 2 88 116 9.98E+01 4.50E-06 2.22E+07 TPH Aro 1-ethyl-3-methylbenzene µg/m³ 2 37 127 9.98E+01 4.50E-06 2.22E+07 1,2,4-trimethylbenzene Aro 1,3,5-trimethylbenzene µg/m³ 3 30.85 78 3.50E+00 4.50E-06 7.78E+05 naphthalene Aro 2-methylnaphthalene µg/m³ 2 1262 1784 2.48E+00 4.50E-06 5.52E+05 naphthalene Aro 1-methylnaphthalene µg/m³ 2 1412 1724 2.48E+00 4.50E-06 5.52E+05 naphthalene Aro 2,7-dimethylnaphthalene µg/m³ 2 1047 1188 2.48E+00 4.50E-06 5.52E+05 naphthalene Aro 1,6-dimethylnaphthalene µg/m³ 2 921 1048 2.48E+00 4.50E-06 5.52E+05 naphthalene Aro 2,6-dimethylnaphthalene µg/m³ 2 504 584 2.48E+00 4.50E-06 5.52E+05 naphthalene Aro 1,4-dimethylnaphthalene µg/m³ 2 460 504 2.48E+00 4.50E-06 5.52E+05 naphthalene Aro 2,3-dimethylnaphthalene µg/m³ 2 455 495 2.48E+00 4.50E-06 5.52E+05 biphenyl NA 2-methylbenzo[b]thiophene µg/m³ 2 358 433 1.33E+02 4.50E-06 2.95E+07 NA biphenyl µg/m³ 2 370 405 1.33E+02 4.50E-06 2.95E+07 biphenyl NA 5-methylnbenzo[b]thiophene µg/m³ 2 275 325 1.33E+02 4.50E-06 2.95E+07 naphthalene Aro 1-ethylnaphthalene µg/m³ 2 292 318 2.48E+00 4.50E-06 5.52E+05 naphthalene Aro 4,7-dimethyl-1H-indene µg/m³ 2 287 303 2.48E+00 4.50E-06 5.52E+05 biphenyl NA 2-benzothiophene µg/m³ 1 283 283 1.33E+02 4.50E-06 2.95E+07 biphenyl NA 3,5-dimethylbenzo[b]thiophene µg/m³ 2 222 237 1.33E+02 4.50E-06 2.95E+07 chlorobenzene/10 NA 1,2,4-trichlorobenzene µg/m³ 2 45 333 4.83E+01 4.50E-06 1.07E+07 1,2-dichloroethane NA 1,3-dichloro-2-chloromethylbenzeneµg/m³ 2 35 257 4.20E-01 4.50E-06 9.33E+04 1,2-dichloroethane NA 1,2-dichloro-3-methylbenzene µg/m³ 2 24.95 207 4.50E-06 9.32E-04 1,2-dichloroethane NA 2,4-dichloro-1-chloromethylbenzeneµg/m³ 2 20.28 107 4.20E-01 4.50E-06 9.33E+04 naphthalene Aro 1,6,7-trimethylnaphthalene µg/m³ 1 221 221 2.48E+00 4.50E-06 5.52E+05 1,2-dichloroethane NA 1,2,4-trichloro-3-methylbenzene µg/m³ 2 96 523 4.20E-01 4.50E-06 9.33E+04 NA cis-1,2-dichloroethene µg/m³ 18 0.33 443.03 1.99E+01 4.50E-06 4.42E+06 55.39 391.89 443.03 6.89 <1 NA trichlorethene µg/m³ 19 0.82 7153 1.82E+01 4.50E-06 4.04E+06 1797.36 194.46 7153 43 214.58 NA tetrachloroethene µg/m³ 24 8.26 101335 2.11E+02 4.50E-06 4.68E+07 22504.51 2850 12155 22.46 28.45 NA 1,2-dichloroethane µg/m³ 19 2.4 2204 4.20E-01 4.50E-06 9.33E+04 941.95 938 2204 <1 <1 NA vinyl chloride µg/m³ 18 16.25 249.55 1.05E+00 4.50E-06 2.33E+05 44.36 159.77 249.55 <1 <1 Aro benzene µg/m³ 2 67.73 212.75 4.90E+00 4.50E-06 1.09E+06 212.75 67.73 chlorobenzene/10 NA 1,2,3-trichloro-4-methylbenzene µg/m³ 1 79 79 4.83E+01 4.50E-06 1.07E+07 TPH aromatics sum 4.99E+02 4.50E-06 1.11E+08 0 966.75 451.66 0 0 TPH aliphatic sum 9.98E+01 4.50E-06 1.66E+08 0 105.46 49.14 0 0

Hauxton Post-Remediation Human Health Risk Assessment

G.5. Groundwater Data in m bgl from Vertase

Appendix G 5: Vertase Groundwater Monitoring Level Data mBGL

Well Number WM1 WM2 WM3 WM4 Island 1 B16 A18 D19 B21 D25 F23 G21 I24 K21 I18 H15 K14 J10 K5 I6 H7 G8 G9 F9 F10 G10 F12 E14 BH9 BH11 VN3 10/01/2012 0.872 0.908 1.222 2.427 2.003 1.891 2.063 2.704 2.415 3.128 1.79 2.435 1.706 1.351 2.724 1.152 5.033 1.565 1.268 1.447 0.951 0.654 1.156 1.452 1.369 1.475 27/01/2012 0.641 0.619 1.076 2.2 1.77 1.583 1.842 2.545 2.302 2.726 1.497 2.147 1.366 0.672 2.577 0.831 4.956 1.346 1.225 1.276 0.885 0.6 1.163 1.39 1.22 1.35 24/02/2012 0.801 0.715 1.156 2.164 1.84 1.645 1.849 2.488 2.214 2.279 1.572 2.375 1.43 0.74 2.44 0.96 5.089 1.37 1.36 1.324 0.951 0.718 1.194 1.494 1.251 1.44 29/03/2012 1.445 1.65 1.892 2.414 2.11 2.32 1.61 2.19 1.51 0.88 2.16 0.82 4.973 1.394 1.45 1.362 0.92 0.72 1.16 1.51 1.31 1.56 1.46 1.03 1.619 01/05/2012 1.12 1.15 1.37 2.18 1.91 2.15 0.98 1.65 0.87 0.21 1.86 0.65 4.89 1.02 1.18 1.06 0.37 0.34 0.58 1.12 1.07 1.30 0.94 0.29 1.22 06/06/2012 1.06 1.46 1.32 1.90 1.53 2.29 0.96 1.58 0.90 0.19 1.67 0.44 4.88 1.21 1.41 1.17 0.84 0.57 1.09 1.41 1.14 1.36 1.02 0.57 1.22

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Hauxton Post-Remediation Human Health Risk Assessment

G.6. HPA Boundary Monitoring

Assessment of emissions to air from the Centre for Radiation, Chemical and Environmental Hazards, former Bayer site at Hauxton, Cambridgeshire

UK long term Month 8 Month 9 Month Month Month Month Month Month Month Month Month Month Month Month Month WHO Air Quality Environmental Prework Month 1 Month 2 Month 3 Month 4 Month 5 Month 6 Month 7 (ppb) (ppb) 10 (ppb) 11 (ppb) 12 (ppb) 13 (ppb) 14 (ppb) 15 (ppb) 16 (ppb) 17 (ppb) 18 (ppb) 19 (ppb) 20 (ppb) 21 (ppb) 22 (ppb) Guidelines (ppb) Assessment Level (ppb) Irritation threshold (ppb) 8hrs Average house levels Compound (1) (ppb) (2) (ppb) (3) (ppb) (4) (ppb) (5) (ppb) (6) (ppb) (7) (ppb) (8) (ppb) (9) (10) (11) (12) (13) (14) (15) (16) (17) (18) (19) (20) (21) (22) (23) (24) (25) (26) exposure unless stated (27) (ppb) (28) Common Uses (29) 1R-.alpha.-Pinene <1 <1 1.04 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 N/A N/A 100,000 (turpentine) Deodorant Acenaphthene <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 1.03 <1 <1 <1 <1 <1 N/A N/A No data insecticide, dye Acetic acid <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 43 <1 N/A 102 10,000 Vinegar Acetone <1 <1 1.16 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 N/A 7,620 200,000* Nail varnish remover 254 total 25,000 (no effect for 2 hrs) total Benzene, 1,2,3-trimethyl 3.34 1.85 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 N/A Petroleum trimethylbenzenes trimethylbenzenes 254 total 25,000 (no effect for 2 hrs) total Benzene, 1,2,4-trimethyl 10.73 4.97 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 N/A Petroleum trimethylbenzenes trimethylbenzenes 254 total 25,000 (no effect for 2 hrs) total Benzene, 1,3,5-trimethyl 3.61 1.62 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 N/A Petroleum trimethylbenzenes trimethylbenzenes 10.25 (1,2,4 Benzene, 1,3,5-trichloro <1 <1 <1 <1 1.11 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 N/A 3000 (total trichlorobenzenes) Degreaser trichlorobenzene) Benzene, 1,2,4-trichloro-3- 10.25 (1,2,4 <1 <1 <1 <1 1.11 1.41 <1 <1 <1 <1 <1 <1 <1 <1 1.01 <1 <1 <1 <1 1.47 <1 <1 <1 N/A 3000 (total trichlorobenzenes) Degreaser methyl trichlorobenzene) Benzene, 1,2,3-trichloro-4- 10.25 (1,2,4 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 1.16 <1 <1 <1 2.12 <1 <1 1.16 1.41 1.57 1.32 <1 <1 N/A 3000 (total trichlorobenzenes) Degreaser methyl trichlorobenzene) 1,016 (total ethyl 100,000 irritant for long term Benzene, 1-ethyl 2-methyl 8.73 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 N/A Petroleum benzenes) exposure (total ethyl benzenes) 1,016 (total ethyl 100,000 irritant for long term Benzene, 1-ethyl 3-methyl 2.13 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 N/A Petroleum benzenes) exposure (total ethyl benzenes) 1,016 (total ethyl 100,000 irritant for long term Benzene, 1-ethyl 4-methyl <1 2.89 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 N/A Petroleum benzenes) exposure (total ethyl benzenes) Benzene, 1-methyl-2-(1- 1,016 (total ethyl No data but very similar structure to <1 <1 <1 <1 <1 <1 <1 <1 1.44 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 N/A Petroleum methylethyl)- benzenes) ethyl benzenes Benzene, 1-methyl-4-(1- 1,016 (total ethyl No data but very similar structure to <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 3.39 <1 N/A Petroleum methylethyl)- benzenes) ethyl benzenes 1,016 (total ethyl No data but very similar structure to Benzene, 1-methyl 3-propyl 2.41 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 N/A Petroleum benzenes) ethyl benzenes para-alpha-dimethyl styrene <1 <1 6.19 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 N/A N/A 50,000 US CDC REL (Cumene) Deodorant 1,016 (total ethyl 100,000 irritant for long term Benzene, 2-ethyl 1,4-dimethyl 2.41 1.21 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 N/A Petroleum benzenes) exposure (total ethyl benzenes) 5000000 for 10 minutes no irritation Cyclopentane, methyl <1 <1 <1 <1 <1 <1 1.06 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 N/A N/A Solvent (pentane) Dichlorotoluene <1 <1 1.36 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 N/A N/A No data Not Known 10 US ATSDR Chronic ≥1 year 1,2 Dichloro-Benzene (DCB) <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 1.11 <1 <1 <1 <1 <1 <1 <1 <1 N/A 254 (1,4- DCB) Solvent, pesticides MRL (1,4-DCB) 10 US ATSDR Chronic ≥1 year 1,3 Dichloro-Benzene (DCB) <1 <1 <1 4.03 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 N/A 254 (1,4- DCB) Herbicides, MRL (1,4-DCB) insecticides, 1,2 Dichloro-3-Methyl- 10 US ATSDR Chronic ≥1 year <1 <1 <1 4.03 <1 1.49 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 N/A 254 (1,4- DCB) medicine, and dyes Benzene MRL (1,4-DCB) D-limonene <1 <1 73 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 N/A N/A >80,000 1.1*** Deodorant / Natural 1,016 (total ethyl 100,000 irritant for long term Ethylbenzene 4.25 1.4 <1 <1 <1 <1 <1 <1 <1 <1 2.34 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 1.13 <1 N/A Paint / Thinners benzenes) exposure (total ethyl benzenes) Undecane <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 1.23 <1 <1 <1 <1 <1 <1 <1 N/A N/A 200,000 US CDC REL (Nonane) Kerosene-based fuels

Heptadecane <1 <1 <1 <1 <1 <1 <1 <1 <1 1.01 <1 <1 <1 <1 <1 <1 <1 <1 3.95 15 <1 <1 <1 N/A N/A 200,000 US CDC REL (Nonane) Kerosene-based fuels

Heptadecane, 2-methyl <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 1.42 4.65 <1 <1 <1 N/A N/A 200,000 US CDC REL (Nonane) Kerosene-based fuels

Heptadecane, 3-methyl <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 1.43 4.72 <1 <1 <1 N/A N/A 200,000 US CDC REL (Nonane) Kerosene-based fuels

Heptadecane, 4-methyl <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 1.67 <1 <1 <1 <1 N/A N/A 200,000 US CDC REL (Nonane) Kerosene-based fuels

Heptane, 2,2,4,6,6- <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 3.67 <1 <1 <1 <1 <1 <1 <1 N/A N/A 200,000 US CDC REL (Nonane) Kerosene-based fuels pentamethyl Paint / Thinners/ Hexane <1 <1 <1 <1 <1 <1 1.45 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 1.15 <1 <1 <1 <1 <1 N/A 204 1000000-25000000 (30-60minutes) Cleaning agent Hexadecane <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 1.13 5.75 <1 <1 <1 N/A N/A 200,000 US CDC REL (Nonane) Solvent Hexadecane, 2-methyl <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 4.29 <1 <1 <1 N/A N/A 200,000 US CDC REL (Nonane) Solvent Hexadecane, 4-methyl <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 5.01 <1 <1 <1 N/A N/A 200,000 US CDC REL (Nonane) Solvent Isopropyl Myristate <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 1.04 <1 N/A N/A No data Mouthwash Naphthalene 3.75 2.1 1.21 <1 <1 3.6 6.36 3.65 2.15 1.53 1.06 1.73 1.92 1.2 2.29 <1 1.18 13 6.61 6.93 8.19 2.77 1.95 N/A N/A 75,000 Mothballs Naphthalene, 2-methyl- <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 1.63 <1 <1 <1 <1 <1 N/A N/A 75,000 (naphthalene) insecticide Nonadecane <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 1.12 3.51 <1 <1 <1 N/A N/A 200,000 US CDC REL (Nonane) Petroleum Octadecane <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 3.16 8.7 <1 <1 <1 N/A N/A 200,000 US CDC REL (Nonane) Solvent 5000000 for 10 minutes no irritation Pentane, 2-methyl- <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 1.18 <1 <1 <1 <1 <1 N/A N/A Solvent (pentane) 5000000 for 10 minutes no irritation Pentane, 3-methyl- <1 <1 <1 <1 <1 <1 1.01 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 1.28 <1 <1 <1 <1 <1 N/A N/A Solvent (pentane) Dyestuffs, organic Phenanthrene <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 1.88 <1 <1 1.26 <1 <1 N/A N/A No data chemical manufacturing 1,2,3 - Propanetriol diacetate <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 5.83 <1 N/A N/A No data Food additive o-Xylene 5.48 2.04 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 N/A 1,016 (total xylenes) 110,000 (total xylenes) 0.88 (total xylenes)*** Paint / Thinners p-Xylene 19 6.49 <1 2.14 <1 2.04 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 N/A 1,016 (total xylenes) 110,000 (total xylenes) 0.88 (total xylenes)*** Paint / Thinners mp-Xylene <1 <1 <1 <1 <1 <1 1.05 2.13 <1 <1 2.62 <1 <1 <1 1.06 <1 <1 1.89 <1 <1 <1 1.52 <1 N/A 1,016 (total xylenes) 110,000 (total xylenes) 0.88 (total xylenes)*** Paint / Thinners Sulfanilamide <1 1.4 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 N/A N/A 140 Russian STEL OEL ** Antibacterial Tetrachloroethylene <1 <1 7.15 12.09 14 36.31 11.87 12.14 17 2.9 6.55 1.42 <1 2.88 9.83 1.89 2.78 3.42 5.03 3.59 1.62 <1 <1 37 509 50,000 Dry Cleaning Toluene <1 2.13 11.24 16 13 25.73 3.61 3.32 9.9 4.59 7.17 1.19 3.97 2.08 2 <1 <1 1.05 4.22 1.16 <1 <1 <1 69 507 50,000 4*** Paint / Thinners Dry cleaning, Trichloroethylene <1 <1 <1 <1 <1 <1 <1 2.75 1.11 <1 <1 <1 <1 <1 1.77 <1 <1 <1 1.13 <1 <1 <1 <1 43,000, 4300, 430# 205 200,000 (transient eye irritation) degreaser US ATSDR = United States Agency For Toxic Substances And Disease Registry

STEL = Short term exposure limit. REL = Recommended Exposure Limit. N/A = Not Available.

OEL = Occupational exposure limit. US CDC = United States Centre for Disease Control. MRL = Minimum Risk Level # Based on excess lifetime risk of 1:10,000; 1:100,000; and 1:1,000,000

References * McParland M and Bates N, Toxicology of Solvents , Rapra Ltd 2002,

** U.S. Department of Health and Human Services, Registry of Toxic Effects of Chemical Substances, 2010

***Coward et al, Indoor AQ in homes in England, BRE, 2002

Other references - Bingham et al, Patty's Toxicology 5th Ed, Wiley ltd, 2001

Guide to the VOC monitoring results summary sheet This summary presents the results of 28 day average VOC monitoring results taken at the perimeter of the Hauxton remediation site. The VOCs found at levels above 1 part per billion are listed. The names of the chemicals, the levels found and data about the identified VOCs are presented in horizonal rows across the table. Column (1) - Lists the individual VOCs identified at the site perimeter. Column (2) - Lists the monitoring results for these VOCs taken in the month prior to excavation taking place. The maximum concentrations from the site boundary are shown. Column (3) - Lists the monitoring results for the VOCs from 18/03/10 - 15/04/10. The maximum concentrations from the site boundary are shown. Column (4) - Lists the monitoring results for the VOCs from 15/4/10 - 13/5/10. The maximum concentrations from the site boundary are shown. Column (5) - Lists the monitoring results for the VOCs from 13/5/10 – 10/6/10. The maximum concentrations from the site boundary are shown. Column (6) - Lists the monitoring results for the VOCs from 10/6/10 to 8/7/10. The maximum concentrations from the site boundary are shown. Column (7) - Lists the monitoring results for the VOCs from 08/07/10 to 05/08/10. The maximum concentrations from the site boundary are shown. Column (8) - Lists the monitoring results for the VOCs from 06/08/10 to 03/09/10. The maximum concentrations from the site boundary are shown. Column (9) - Lists the monitoring results for the VOCs from 03/09/10 to 30/09/10. The maximum concentrations from the site boundary are shown. Column (10) - Lists the monitoring results for the VOCs from 30/09/10 to 28/10/10. The maximum concentrations from the site boundary are shown. Column (11) - Lists the monitoring results for the VOCs from 28/10/10 to 25/11/10. The maximum concentrations from the site boundary are shown. Column (12) - Lists the monitoring results for the VOCs from 25/11/10 to 21/12/10. The maximum concentrations from the site boundary are shown. Column (13) - Lists the monitoring results for the VOCs from 21/12/10 to 20/01/11. The maximum concentrations from the site boundary are shown. Column (14) - Lists the monitoring results for the VOCs from 20/01/11 to 17/02/11. The maximum concentrations from the site boundary are shown. Column (15) - Lists the monitoring results for the VOCs from 17/02/11 to 17/03/11. The maximum concentrations from the site boundary are shown. Column (16) - Lists the monitoring results for the VOCs from 17/03/11 to 14/04/11. The maximum concentrations from the site boundary are shown Column (17) - Lists the monitoring results for the VOCs from 14/04/11 to 12/05/11. The maximum concentrations from the site boundary are shown Column (18) - Lists the monitoring results for the VOCs from 12/05/11 to 09/06/11. The maximum concentrations from the site boundary are shown Column (19) - Lists the monitoring results for the VOCs from 09/06/11 to 13/07/11. The maximum concentrations from the site boundary are shown Column (20) - Lists the monitoring results for the VOCs from 13/07/11 to 15/08/11. The maximum concentrations from the site boundary are shown Column (21) - Lists the monitoring results for the VOCs from 15/08/11 to 08/09/11. The maximum concentrations from the site boundary are shown Column (22) - Lists the monitoring results for the VOCs from 08/09/11 to 06/10/11. The maximum concentrations from the site boundary are shown Column (23) - Lists the monitoring results for the VOCs from 06/10/11 to 03/11/11. The maximum concentrations from the site boundary are shown Column (24) - Lists the monitoring results for the VOCs from 03/11/11 to 03/12/11. The maximum concentrations from the site boundary are shown Column (25) - Lists the World Health Organisation air quality guideline levels for the VOCs, where available. These guideline levels provide a basis for protecting public health from adverse effects of air pollution. They are calculated to protect the health of the whole population, including susceptible groups, based on a lifetime exposure to the chemicals. Column (26) - Lists the Environmental assessment levels (EALs) for the identified VOCs. EALs are calculated for the protection of health by the Environment Agency. They are used to provide direction in the risk management decisions for industrial processes under the Environmental Permitting (England and Wales) Regulations 2007. Column (27) - Lists the results of studies of health effects arising from exposure to VOCs. The levels shown indicate the amount of the VOC required in the air to lead to health effects such as irritation. Column (28) - Lists the levels of the VOCs found in a study of indoor air quality carried out by the Department of the Environment, Food and Rural Affairs in 2002 Column (29) - Lists the common uses of the VOCs identified.

Hauxton Post-Remediation Human Health Risk Assessment

G.7. Correspondence with the vapour laboratory

From: Stewart, Andrew To: Stewart, Andrew Subject: FW: Hauxton - dichloromethylbenzene vapour and HCVs Date: 30 August 2013 11:05:39

From: Linda Sent: 20 August 2013 12:35 To: [email protected] Cc: 'Diffusion' Subject: RE: Hauxton - dichloromethylbenzene vapour and HCVs

Steve,

I have now completed the review of samples analysed for the Hauxton project reference our reports Y0518R and Y0755R.

Samples were collected on Tenax thermal desorption tubes and analysed by TD-GCMS. The analysis method used is suitable for the analysis of compounds in the hydrocarbon range C7to C28 and chlorinated compounds of equivalent boiling point range. The method has been validated for the quantitative analysis of dichlorobenzenes and hexhachlorobenzene which have boiling points above and below the compounds of interest. The method is suitable for the analysis of the following compounds:

alpha,alpha-dichloromethylbenzene (CAS 98-87-3) 2,3-Dichlorotoluene (CAS 32768-54-0) 2,4-dichlorotoluene (CAS 95-73-8) 2,6-dichlorotoluene (CAS 118-69-4) Trichloromethylbenzene (CAS Number 98-07-7)

Compounds 2,3-Dichlorotoluene, 2,4-dichlorotoluene, 2,6-dichlorotoluene and alpha,alpha- dichloromethylbenzene were searched for by selective ions specific to the dichloro compounds (m/z 125 and 160). Where these ions were detected the mass spectrum were reviewed to see if they were due to the presence of any of the compounds of interest.

Abundance of ions m/z 125 and 160 were very low and only present in the baseline noise. Specifically, the abundance of ion m/z 160 was not significant.

2,3-Dichlorotoluene, 2,4-dichlorotoluene, 2,6-dichlorotoluene and alpha,alpha- dichloromethylbenzene were not present in the samples at detectable levels and can be considered to be below the reporting limit of 5 ng on tube (as toluene equivalents).

Trichloromethylbenzene was searched for by selective ions specific to trichloromethylbenzene (m/z 159, 161 and 89 ) The molecular ion 194 was not used due to the low abundance in the mass spectrum. Where these ions were detected the mass spectrum were reviewed to see if they were due to the presence of trichloromethylbenzene.

Abundance of ions m/z 159 and 161 was very low. Abundance of ion m/z 89 was higher but not in conjunction with appropriate levels of the other two ions. The three ions were detected at 21.27 minutes in the chromatographs for samples FB4, FB5 and FB6 in report Y0755R, however the abundances were too low to detect a clean peak in the chromatograph. If present the compound was well below the reporting limit of 5ng on tube.

It should be noted that other structural isomers have similar mass spectrum to trichloromethylbenzene CAS Number 98-07-7 and the peak at 21.27 minutes may not be due to this compound.

In conclusion, if the compounds listed above were present in the samples, the analytical method would be able to report a result. The above investigation has confirmed that these compounds are not present above the reporting limit of 5ng on tube for this method (as toluene equivalents) which equates to 0.07µgm-3 for 72 liters sampled.

Regards,

Linda

Linda Gates BSc. MRSC Laboratory Supervisor

Gradko International Ltd St Martins House 77 Wales Street Winchester SO23 0RH Telephone: 01962 860331 www.gradko.co.uk

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Hauxton Post-Remediation Human Health Risk Assessment

Figures

5095855 PROJECT NO: DISCIPLINE: C

Legend TYPE: _ CODE:

Site Boundary _

Water Course DRG NO: 001

Exceeded Cell 1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 REV: Main Manufacturing A A Plant Location B B Production Area C C D D E E or GRANTA 1/3 F THE RIDDY F 1/1 G G

1 Exceedance Plots Amended AW 20/09/12 Main Manufacturing Plant H H Location Added I I 0 First Issue AW 18/09/12

1/2 3/3 REV DESCRIPTION BY DATE CHK'D AUTH J J Atkins Limited Albany Court Newcastle Business Park RIVER CAM or GRANTA 1/2 Newcastle Upon Tyne NE4 7YB K K England THE RIDDY Telephone +44(0)191 2334466 Fax +44(0)191 2235224 HAUXTON MILL RACE L L CLIENT: Harrow Estates M M

A10 Cambridge Road PROJECT: N N Former Bayer Site Hauxton Cambridge

O O TITLE: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 Trichloromethylbenzene Exceedances

SCALE: ORIGINAL SIZE: DESIGNED: DRAWN: CHECKED: AUTHORISED: A3 AW AW 22.0m Square 1:2000 OFFICE: DATE: DATE: DATE: DATE: NCL 18/09/12 18/09/12 PROJECT NO: DISCIPLINE: TYPE: CODE: DRG NO: REV: 5095855 C _ _ 001 1 5095855 PROJECT NO: DISCIPLINE: C

Legend TYPE: _ CODE:

Site Boundary _

Water Course DRG NO: 002

Exceeded Cell 1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 REV: Main Manufacturing A A Plant Location B B Production Area C C D D E E

RIVER CAM or GRANTA F THE RIDDY F 1/1 G G

1 Exceedance Plots Amended AW 20/09/12 Main Manufacturing Plant H H Location Added I I 0 First Issue AW 18/09/12

REV DESCRIPTION BY DATE CHK'D AUTH J J Atkins Limited Albany Court Newcastle Business Park RIVER CAM or GRANTA Newcastle Upon Tyne NE4 7YB K K England THE RIDDY Telephone +44(0)191 2334466 Fax +44(0)191 2235224 HAUXTON MILL RACE L L CLIENT: Harrow Estates M M

A10 Cambridge Road PROJECT: N N Former Bayer Site Hauxton Cambridge

O O TITLE: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 Dichloromethylbenzene Exceedances

SCALE: ORIGINAL SIZE: DESIGNED: DRAWN: CHECKED: AUTHORISED: A3 AW AW 22.0m Square 1:2000 OFFICE: DATE: DATE: DATE: DATE: NCL 18/09/12 18/09/12 PROJECT NO: DISCIPLINE: TYPE: CODE: DRG NO: REV: 5095855 C _ _ 002 1 5095855 PROJECT NO: DISCIPLINE: C

Legend TYPE: _ CODE:

Site Boundary _

Water Course DRG NO: 003

Exceeded Cell 1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 REV: Main Manufacturing A A Plant Location B B Production Area C C D D E E

RIVER CAM or GRANTA F THE RIDDY F G G

1 Exceedance Plots Amended AW 20/09/12 H H Main Manufacturing Plant 1/2 1/2 Location Added I I 0 First Issue AW 18/09/12

3/3 1/4 REV DESCRIPTION BY DATE CHK'D AUTH J J Atkins Limited Albany Court Newcastle Business Park RIVER CAM or GRANTA 1/2 1/3 Newcastle Upon Tyne NE4 7YB K K England THE RIDDY Telephone +44(0)191 2334466 Fax +44(0)191 2235224 HAUXTON MILL RACE L L CLIENT: 1/5 Harrow Estates M M

A10 Cambridge Road PROJECT: N N Former Bayer Site Hauxton Cambridge

O O TITLE: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 1,2-Dichloroethane Exceedances

SCALE: ORIGINAL SIZE: DESIGNED: DRAWN: CHECKED: AUTHORISED: A3 AW AW 22.0m Square 1:2000 OFFICE: DATE: DATE: DATE: DATE: NCL 18/09/12 18/09/12 PROJECT NO: DISCIPLINE: TYPE: CODE: DRG NO: REV: 5095855 C _ _ 003 1 055 0 1 004 _ _ C 5095855 PROJECT NO: DISCIPLINE:

Legend TYPE:

Site Boundary CODE:

Water Course DRG NO:

Exceeded Cell

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 REV: Main Manufacturing A A Plant Location B B Production Area C C D D E E

RIVER CAM or GRANTA F THE RIDDY F G G

1 Exceedance Plots Amended AW 20/09/12 H H Main Manufacturing Plant Location Added I I 0 First Issue AW 18/09/12

3/3 1/4 REV DESCRIPTION BY DATE CHK'D AUTH J J Atkins Limited Albany Court Newcastle Business Park RIVER CAM or GRANTA Newcastle Upon Tyne NE4 7YB K K England THE RIDDY Telephone +44(0)191 2334466 Fax +44(0)191 2235224 HAUXTON MILL RACE L L CLIENT: Harrow Estates M M

A10 Cambridge Road PROJECT: N N Former Bayer Site Hauxton Cambridge

O O TITLE: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 1,2-Dichloroethane Exceedances

SCALE: ORIGINAL SIZE: DESIGNED: DRAWN: CHECKED: AUTHORISED: A3 AW AW 22.0m Square 1:2000 OFFICE: DATE: DATE: DATE: DATE: NCL 18/09/12 18/09/12 PROJECT NO: DISCIPLINE: TYPE: CODE: DRG NO: REV: 5095855 C _ _ 004 1

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