GROUNDWATER AND SURFACE WATER SCHEME OF MONITORING

CONDOVER QUARRY EXTENSION, ,

For

Hanson UK 3 Deighton Close Wetherby West Yorkshire United Kingdom LS22 7GZ

By

Envireau Water Aske Stables Aske Tel: 01748 889 268 Richmond E mail: [email protected] North Yorkshire Web: www.envireauwater.co.uk DL10 5HG

Ref: P20‐052 Hanson Ext 2020 \ RPT ‐ Condover Ext SOM January 2021

TABLE OF CONTENTS

1 INTRODUCTION ...... 1 1.1 Background ...... 1 1.2 Planning Conditions 18a and 18b ...... 2 2 IMPACTS OF QUARRYING ...... 2 3 MONITORING LOCATIONS ...... 3 3.1 Existing Quarry Area Monitoring Locations ...... 3 3.2 Extension Area Monitoring Locations ...... 3 3.2.1 Groundwater ...... 3 3.2.2 Surface Water ...... 4 4 PROGRAMME ...... 5 4.1 Measurement, Frequency & Duration ...... 5 4.2 Reporting & Review ...... 5 4.2.1 Annual Reporting ...... 5 4.2.2 Tri‐Annual Reporting ...... 5 4.2.3 Dewatering ...... 6 4.2.4 Scheme Amendments ...... 6 5 TRIGGER LEVELS ...... 6 5.1 Pre‐Dewatering Period ...... 6 5.2 Setting Trigger Levels ...... 6 5.2.1 Trout Pond ...... 6 5.2.2 Sand and Gravel (Kame) Monitoring Boreholes (PZ1, PZ3 and BH6) ...... 7 5.2.3 Lacustrine Deposits / Till, Flood Gravels Monitoring Boreholes (PZ2 and PZ4) ...... 7 5.3 Action upon Breach of Trigger Level ...... 7 6 CONTINGENCY & MITIGATION ...... 8 6.1 Pre‐Dewatering Period ...... 8 6.2 Dewatering Period ...... 8 6.3 Meetings ...... 8 REFERENCES ...... 9

FIGURES

Figure 1 Monitoring Locations

TABLES

Table 1 Monitoring Borehole Details Table 2 Surface Water Monitoring Details

APPENDICES

Appendix A Monitoring Borehole Construction Logs

© Envireau Ltd. 2021

Envireau Ltd. Registered in England & Wales No. 6647619. Registered office: Chartwell House, 4 St Pauls Square, Burton on Trent, DE14 2EF, UK.

Any report provided by Envireau Ltd. is for the client's use and may be reproduced by the client for internal use. The report must not be issued to third parties without the express written consent of Envireau Ltd. If the report is released to any third party, Envireau Ltd will not accept responsibility or liability of any nature to that third party to whom the report (or part thereof) is released. Moreover, Envireau Ltd will accept no liability for damage or loss as a result of any report being made known to, or relied upon by, a third party, unless expressly agreed with Envireau Ltd in writing.

Revision Details Completed by Date Checked by Date REV01 Internal draft PJ 29/05/2020 PH 03/06/2020

REV02 Client issue - DFC PJ 11/06/2020 JED 12/06/2020 REV03 Client issue - FDFC PJ 13/11/2020 JED 13/11/2020 REV04 Client issue - Final PJ 25/01/2021 PH 25/01/2021

Ref: P20-052 Hanson Condover Ext 2020 \ RPT - Condover Ext SOM January 2021

GROUNDWATER AND SURFACE WATER SCHEME OF MONITORING

CONDOVER QUARRY EXTENSION, SHREWSBURY, SHROPSHIRE

1 INTRODUCTION

This report provides details of a scheme of monitoring for the extension to Condover Quarry, which serves to address Conditions 18a and 18b of Planning Permission No. 19/01261/MAW.

The scheme of monitoring has been based on the information presented in the Hydrogeological Impact Assessment and Flood Risk Assessment (HIA‐FRA) that supported the planning application submission.

1.1 Background

Hanson Aggregates (Hanson) operates a sand and gravel quarry at the existing Condover Quarry situated to the north of Condover, Shropshire, which is coming towards the end of its life. Planning Permission No. 19/01261/MAW has been granted to extend the quarry and extract approximately 2.85 million tonnes of sand and gravel by excavating in a south and westwards direction away from the existing quarry at circa. 200,000 tonnes per annum.

The sand and gravel will be worked dry to a maximum depth of approximately 62mAOD by undertaking dewatering and there will be a wet restoration. Dewatering, for which an abstraction licence will be required, is not planned to commence until 9 years after the start of mineral extraction.

Envireau Water completed a HIA‐FRA to support the planning application submission for the extension of Condover Quarry, which was completed in June 2017 [Ref. 1] and updated in September 2018 [Ref. 2]. The “application site” comprises the existing plant/lagoon area and the extension area, however there are no proposed changes to the operation of the existing plant/lagoon area.

The HIA‐FRA determined that with appropriate mitigation, the development does not present an unacceptable risk to the water environment. However, to demonstrate the effectiveness of the mitigation measures, a scheme of monitoring would be developed. An outline scheme of monitoring was produced by Envireau Water in September 2018 [Ref. 2] to support the planning application submission.

North Office, Aske Stables, Aske, t 01748 889268 e [email protected] Richmond, North Yorkshire, DL10 5HG w www.envireauwater.co.uk

Envireau Ltd. Registered in England & Wales No. 6647619 Registered office: Chartwell House, 4 St Pauls Square, Burton on Trent, DE14 2EF

Envireau Water

1.2 Planning Conditions 18a and 18b

Condition 18a states that: “Within six months of the date of this planning permission a groundwater and surface water level monitoring scheme shall be submitted for the written approval of the Local Planning Authority (LPA) in consultation with the Environment Agency. Thereafter the approved scheme shall be implemented in accordance with the approved plans. The Scheme shall include:

i. Continued monitoring of the proposed monitoring boreholes identified in Table 1 of the Environmental Statement Appendix L – Scheme of Monitoring, Envireau Water, Rev: 30/3/2017. Such monitoring shall continue for the life of the development, until the expiry of the five year aftercare period; ii. monitoring locations (surface and groundwater); iii. method and nature of sampling/measurement; iv. a programme detailing frequency and duration of monitoring along with details of how and when the monitoring data and the Scheme itself shall be reviewed to assess if impacts (if any) are occurring; v. trigger levels when action is required to protect a water feature; vi. details of any contingency and mitigation proposals should a trigger level be breached and an impact apparent at a water feature.”

Condition 18b states that: “In the event that monitoring of groundwater / surface water indicates that a trigger level approved under Condition 18a has been breached a report and scheme investigating the reason for the breach shall be submitted to and approved in writing by the Local Planning Authority in consultation with the Environment Agency. The scheme shall set out mitigation proposals in the event that the monitoring data identifies a significant adverse impact or risk of deterioration which is likely to be attributable to the mineral extraction. The mitigation measures shall in such circumstances include provision for the mineral extraction to cease temporarily whilst investigation into the apparent deterioration is undertaken. The submitted proposals shall be implemented in accordance with the approved details.”

2 IMPACTS OF QUARRYING

The extraction of sand and gravel at the existing Condover Quarry commenced in 1961. For the first 9 years of operation, the extension area will continue with the existing working practice regarding the historic water management arrangements, with the operations and potential impacts for the extension being analogous to the current working area. To date there have been no impacts to the local environs as a result of the current operations.

Based upon projected sales, groundwater lowering is anticipated to commence some 9 years after planning permission is granted to optimise mineral recovery. Dewatering will allow the sand and gravel to be worked dry to a maximum depth of approximately 62mAOD. The dewatering water will be pumped from the extension area to the existing Freshwater Lagoon and will be discharged to a tributary of the Cound Brook (the existing discharge location) under discharge consent S/02/50163/T (Figure 1).

The sand and gravel in the extension area is considered to be a Kame structure, extending in a southerly direction towards the village of Condover and to the northeast towards Bomere Pool, although the full extent is unknown. The geological units surrounding the Kame comprise predominantly low permeability materials, which restrict the

Ref: P20-052 Hanson Condover Ext 2020 \ RPT - Condover Ext SOM - REV04 Page 2 of 9 Envireau Water flow of water into the Kame and the impacts associated with dewatering the Kame. The HIA‐FRA and additional technical notes [Ref. 3, 4, 5] submitted to the Environment Agency in 2019 as part of the planning submission concluded that there are no existing groundwater abstractions in the area that would be impacted by the dewatering activities.

Bomere Pool is formed in a hole associated with the Kame and is located on glacial till to the east of the quarry. The water level in Bomere Pool is approximately 20m higher than the closest groundwater levels recorded in the quarry. The difference in water level elevations demonstrates that the glacial till provides hydraulic separation between Bomere Pool and the groundwater system encountered at the quarry.

The ground in the southeast of the extension area, classed by Hanson as barren, is expected to be glacial till providing hydraulic separation between the site and the Cound Brook. Any theoretical impact on the river will also be mitigated by the discharge of dewatering water.

The Trout Pond to the northeast of the extension area is situated on a sand and gravel deposit and therefore is likely to be groundwater fed. It is quite possible that, similar to Bomere Pool, the Trout Pond is formed in a kettle hole associated with the Kame and is hydraulically separated from the groundwater system encountered at the quarry.

To assess the impacts of quarrying, a scheme of monitoring is proposed based on collecting groundwater level data from a series of monitoring boreholes constructed at the extension area and collecting water level data from the Trout Pond.

3 MONITORING LOCATIONS

3.1 Existing Quarry Area Monitoring Locations

Groundwater levels are currently monitored in eleven monitoring boreholes at the existing Condover Quarry and water level data from Bomere Pool is obtained by the Environment Agency. The existing monitoring locations are shown on Figure 1.

The water level in the boreholes is recorded manually on a monthly basis using a water level meter. The water level in Bomere Pool is recorded using a datalogger measuring the water level on an hourly basis.

3.2 Extension Area Monitoring Locations

3.2.1 Groundwater

Based on the conclusions of the HIA‐FRA, groundwater levels will be monitored in a total of five monitoring boreholes around the periphery of the extension area, the locations of which are shown on Figure 1. The construction logs of the monitoring boreholes are presented in Appendix A.

The five boreholes monitor groundwater levels within the sand and gravel deposit (along the axis of the Kame structure and groundwater hydraulic gradient), the lacustrine deposits/till to the northwest and the flood gravels to the southeast. Summary details of the boreholes are provided in Table 1.

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Table 1 Monitoring Borehole Details

Name Type Depth Purpose Easting Northing Groundwater level monitoring PZ1 Borehole 32m 349383 306662 – Sand and Gravel (Kame) Groundwater level monitoring PZ2 Borehole 16.8m 349334 307066 – Lacustrine Deposits / Till Groundwater level monitoring PZ3 Borehole *22.9m 349691 307062 – Sand and Gravel (Kame) Groundwater level monitoring PZ4 Borehole 11m 349656 306742 – Flood Gravels Groundwater level monitoring BH6 Borehole 10m 349315 306882 – Sand and Gravel (Kame) *Note that this depth has been corrected from that provided in the outline Scheme of Monitoring [Ref.2]

The boreholes listed in Table 1 are the same boreholes as those described in bullet (i) of Planning Condition 18a.

3.2.2 Surface Water

Based on the conclusions of the HIA‐FRA, the water level in the Trout Pond to the northeast of the extension area, as well as rainfall, will be measured. The monitoring locations are presented on Figure 1 and details are summarised in Table 2.

Table 2 Surface Water Monitoring Details

Name Type Purpose Easting Northing Measure surface water level in Trout Pond Gauge board 350100 307590 the Trout Pond Tipping bucket rain Rain gauge Measure rainfall 349500 307350 gauge

It should be noted that the Trout Pond is not under the ownership of Hanson. Access is currently granted by the landowner and the pond will continue to be monitored as long as access is permitted.

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4.1 Measurement, Frequency & Duration

The method and nature of measurement, together with frequency of measurement will be as follows:

 The groundwater level in the monitoring boreholes will be recorded manually on a monthly basis using a water level meter.  The water level in the Trout Pond will be recorded manually on a monthly basis from a gauge board surveyed to ordnance datum.  Rainfall will be monitored at the site office area using a tipping bucket rain gauge connected to a datalogger, which will store total daily rainfall.

Monitoring will be carried out at the monitoring locations prior to, during and after quarrying activities and will continue until the expiry of the five year aftercare period. Monitoring will also continue to be carried out at the existing monitoring locations until extraction at the existing Condover Quarry is complete, at which point the scheme of monitoring will be reviewed and amended as necessary, as agreed with the mineral planning authority (MPA).

4.2 Reporting & Review

4.2.1 Annual Reporting

Subject to any requirements of the Environment Agency in relation to dewatering, data will be collected as detailed in Sections 3 and 4.1 and maintained in an appropriate database. An electronic version of the data, including tables and graphed results will be forwarded to the MPA 12 months after this scheme is established, and thereafter on an annual basis.

4.2.2 Tri-Annual Reporting

Subject to any requirements of the Environment Agency in relation to dewatering, every three years, a tri‐annual report will be prepared and reviewed by a suitably experienced and qualified groundwater specialist, describing the trends in groundwater and surface water levels, and whether the scheme remains fit for purpose.

The tri‐annual report will describe the trends within the context of quarrying activities and ambient climatic conditions. Tri‐annual reports produced during the period of dewatering will assess the level of impact, if any, of the dewatering activities. The reports will also comment on any significant adverse impact/risk of deterioration that is likely to be attributable to the mineral extraction.

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4.2.3 Dewatering

Prior to dewatering starting, a report will be prepared which provides an up to date monitoring data set, and reviews the scheme of monitoring in light of any changes or recommendations requested by the Environment Agency at that time, to ensure that this scheme aligns with any scheme required by an abstraction licence to allow dewatering to take place. The report will support an abstraction licence application and will include:

 A water features survey to identify new abstractions / water features  Setting trigger levels based on groundwater level data collected up to that time  Defining contingency and mitigation measures based on the trigger levels

4.2.4 Scheme Amendments

As appropriate, recommendations will be made to amend the scheme, either as part of the reporting or separately, for approval with the MPA.

5 TRIGGER LEVELS

Trigger levels are an important management tool to protect the environment and, in many cases, provide a useful tool to trigger a reporting chain and implement mitigation and contingency measures.

An abstraction licence will need to be obtained prior to dewatering commencing and a water features survey will be undertaken as part of that process to identify any new abstractions. Setting trigger levels now is therefore premature and instead, the trigger levels will be set during the abstraction licence application process before dewatering commences. Once the trigger levels are established, this scheme will be amended via the tri‐annual or dewatering report to reflect them.

5.1 Pre‐Dewatering Period

As dewatering is not anticipated for some 9 years, and before dewatering can take place the Environment Agency must grant an abstraction licence, there is no risk of dewatering having an unacceptable impact. Trigger levels will be established based on the water level data collected prior to dewatering commencing. This will provide a data record some 9 years in duration which will allow the natural baseline, seasonal and inter‐annual trends to be established.

5.2 Setting Trigger Levels

Examples are provided in the following sub‐sections for how trigger levels will be calculated. However, if there are more appropriate methods applicable for setting trigger levels in 9 years time, then those methods will be used instead.

5.2.1 Trout Pond

Trigger levels are already set for the nearby Bomere Pool at 75.4mAOD and 75.1mAOD (0.25m and 0.55m below the average water level respectively). It is expected that a similar approach will be suitable for the Trout Pond and trigger levels will be set based on the baseline data collected prior to dewatering commencing.

Ref: P20-052 Hanson Condover Ext 2020 \ RPT - Condover Ext SOM - REV04 Page 6 of 9 Envireau Water

5.2.2 Sand and Gravel (Kame) Monitoring Boreholes (PZ1, PZ3 and BH6)

The Dupuit Forcheimer equation [Ref. 6] has been used to calculate conservative estimates of 8.5 to 10m drawdown at PZ1, PZ3 and BH6 from the dewatering activities in the extension area. Trigger levels will therefore be set between approximately 8.5 to 10m below the lowest water level recorded in the boreholes prior to dewatering commencing.

As described in Section 2, there are no existing groundwater abstractions in the area that would be impacted by the dewatering activities. A water features survey will be undertaken as part of the abstraction licence process to identify any new abstractions and in the event that any are identified, the trigger level method will be reviewed to ensure that the trigger levels are appropriate to monitor the potential impacts.

In any event, the trends in the groundwater level data will be fully described as part of the tri‐annual reports detailed in Section 4.2.2.

5.2.3 Lacustrine Deposits / Till, Flood Gravels Monitoring Boreholes (PZ2 and PZ4)

As described in Section 2, the geological units surrounding the Kame comprise the Lacustrine Deposits / Till and Flood Gravels, which are predominantly low permeability materials restricting the flow of water into the Kame. These geological units will not be impacted by dewatering, however, to confirm that this is the case, trigger levels will be set at approximately 10% of the saturated thickness below the lowest water level recorded in the borehole prior to dewatering commencing.

For example, if the saturated thickness below the lowest water level in PZ2 is 10m, then the trigger level will be set at 1m below the lowest water level, and if the saturated thickness below the lowest water level in PZ4 is 5m, then the trigger level will be set at 0.5m below the lowest water level.

5.3 Action upon Breach of Trigger Level

If the water level falls below a trigger level, then it can indicate a potential impact on the water environment from the quarry operations. Upon breach of a trigger level, appropriate actions will be implemented to protect water features and are listed as follows:

1. Notify Environment Agency / MPA of trigger level breach 2. Review frequency of manual water level measurements and increase from monthly to weekly, if appropriate, prior to the submission of a technical note 3. Analysis of monitoring data and produce a technical note within 1 month of trigger level breach for submission to Environment Agency / MPA 4. Undertake appropriate mitigation if an impact is apparent at a water feature and it is attributable to the mineral extraction

The technical note will investigate the reason for the breach and set out mitigation proposals in the event that the monitoring data identifies a significant adverse impact or risk of deterioration which is likely to be attributable to the mineral extraction. If it is concluded that an impact is occurring that is attributable to the mineral extraction, then mitigation measures will be implemented in accordance with the approved details.

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6.1 Pre‐Dewatering Period

In the event that any of the monitoring boreholes are lost by quarrying or collapse, then they will be replaced at a location to be agreed with the MPA.

6.2 Dewatering Period

In the event that there is any detrimental impact to groundwater levels and it is identified and attributed to activities at the quarry through the review of monitoring data, then contingency and mitigation measures will be implemented as defined in the dewatering report supporting the abstraction licence application, detailed in Section 4.2.3.

In the event that the agreed trigger levels at the Trout Pond are breached and it is identified and attributed to activities at the quarry through the review of monitoring data, then the water level in the Trout Pond will be augmented with water from the dewatering activities as required and as agreed with the landowner.

6.3 Meetings

If issues or matters arise that require discussion, a meeting may be called by either the MPA or Hanson, and the other party will make every effort to fulfil the meeting request within 21 days.

Envireau Water 25/01/2021

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REFERENCES

Ref.1 Envireau Water. Condover Quarry Extension ‐ Hydrogeological Impact Assessment & Flood Risk Assessment, Environmental Statement Appendix 6. Dated June 2017.

Ref.2 Envireau Water. Condover Quarry Extension ‐ Hydrogeological Impact Assessment & Flood Risk Assessment, Environmental Statement Appendix 6. Dated September 2018.

Ref.3 Envireau Water. Condover Quarry Southern Extension – Technical Note. Dated 02/07/19.

Ref.4 Envireau Water. Condover Quarry Southern Extension – Technical Note. Dated 02/10/19.

Ref.5 Envireau Water. Condover Quarry Southern Extension – Technical Note. Dated 13/12/19.

Ref.6 Environment Agency Tier 1 Analytical Tool, Assessing the Impacts of Dewatering.

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FIGURES

Ref: P20-052 Hanson Condover Ext 2020 \ RPT - Condover Ext SOM - REV04 Figures 49 50 51

N KEY BH25 W E Application site S

BH70 Extension area

PZ7/16 BH55 Existing quarry area Direction of pumped water 08 PZ6/16 Quarry BH41 from existing quarry area Face Pool Quarry Direction of pumped water BH177 Pool BH28 from application site

BH9 PZ5/16 Discharge Consent S/02/50163/T BH7 Trout Pond Existing quarry area monitoring borehole Freshwater Lagoon Extension area monitoring borehole Processing Existing Bomere Pool Plant / Site monitoring location Office Area Silt Lagoon Trout Pond monitoring location Approximate location of PZ3 rain gauge 07 PZ2 BH6

PZ4 PZ1 SJ Scale 1: 10,000 (at A3)

Reproduction of base map with the permission of The Controller of Her Majesty’s Stationary Office © Crown copyright. Licence No. AL 50002. 1000

Ref: P20-052 - Hanson Condover Ext 2020 / FIG 1 - Condover Ext SOM Date: 2 /0 /202 Hanson Aggregates - Condover Quarry Extension

5 1 1 Figure 1 Monitoring Locations Envireau Water

APPENDIX A MONITORING BOREHOLE CONSTRUCTION LOGS

Ref: P20-052 Hanson Condover Ext 2020 \ RPT - Condover Ext SOM - REV04 Appendices test test test test EnvireauWater

Project: Project Number: Client: BH Number: Condover Geotechnical 2103 Hanson BH6 Site: Grid Reference: Elevation: Drilled Diameter: Drillers: Hanson Condover SJ 49318 06886 200m to 10m 150mm to 23.20m Apex Drill Start: 07/10/2016 DrillWL: Strike9mbgl RWL8.2mbgl Depth: Drill End: 12/10/2016 Date: 10/10/201612:40 10/10/201613:00 23.20m m) th ( m) pe

o. Strength p m) ( y ( e N T D in e v el Description InstallationDetails L n e ss th m p le p ck m p le er i m p le e Sa h at

Sa D SPTCount NValue Sa T W

0 B 1 0-0.5 0.00-0.50 Topsoil B 2 0.5-1 0.50-1.00 Light brown siltyclayeySAND U1001m27blows100% Penotrometer 1 2 U1003 1-1.4 Brown locally black stained siltyclayey gravellySAND. Gravel is fine tocoarse subangular torounded gravel including test >4.5kg/cm mudstone,quartziteand igneous. D 4 1-1.4 U1002m18blows100% Penotrometer 2 1.00-3.40 2 D 5 1-2 test >4.5kg/m U1006 2-2 U1003m22blows100% Penotrometer 3 2 D 7 2-2.4 Medium dense brown silty sandyclayey,locallyveryclayey GRAVEL. Gravel is fine tocoarse,angular to subrounded test >4.5kg/cm includingmudstone,sandstone igneous,quartzite. D 8 2-3 U1004m25blows100% Penotrometer 4 2 U1009 3.1-3.4 2.5kg/cm D 10 3.4-3.6 U1005m30blows100% 5 D 11 3-4 3.40-7.50 SPT 5.5m B 12 3-4 244467 21 6 U10013 4-4.45 SPT 6.5 D 14 4.45-4.65 344495 22 7 D 15 4-5 SPT 7.5m U10016 5-5.45 MediumDense brownvery siltymedium tocoarse GravellySAND. Gravel is fine tocoarseangular to subrounded including 222342 11 8 B 17 5-5.5 7.50-9.10 sandstone,quartzite,igneous,mudstoneandrare subroundedcobblesofigneous. U1008.5m9 Blows100% RWL8.20 SPT 18 5.5-5.95 9 SPT 9.1m Strike B 19 5.5-6.5 MediumDensered brown silty gravelly fine tocoarseSAND. Gravel is fine tomedium gravel including sandstone,mudstone 233421 10 9.00 SPT 20 6.5-6.95 and igneous. 10 B 21 6.5-7.5 U10010m16blows100% SPT 22 7.5-7.95 SPT 11.2m 11 B 23 7.5-8.5 212234 11 U10024 8.5-8.95 12 D 25 8.95-9.15 U10012.2m50blows100% B 26 8.5-9.1 SPT 13.2m 13 CPT 27 9.1-9.55 9.10- 666322 13 18.20 B 28 9.1-10 14 SPT 14.2m D 29 10-10.2 123566 20 U10030 10.2-10.6 15 D 31 10.6-10.8 U10015.2m39blows100% D 32 10.2-11.2 SPT 16.2m 16 SPT 33 11.2-11.65 2 24534 16 B 34 11.2-12.2 17 U10035 12.2-12.65 U10017.2m40blows100% B 36 12.2-13.2 SPT 18.2m 18 SPT 37 13.2-13.65 Loosered brown silty gravelly fine tocoarseSAND. Gravel is fine tomedium gravel including sandstone,mudstoneand 1 1 1 1 1 2 5 igneous. B 38 13.2-14.2 19 SPT 39 14.2-14.65 U10019.2m14blows100% B 40 14.2-15.2 SPT 20.2m 20 U100 41 15.2-15.6 18.20- 2 1 2 1 2 2 7 B 42 15.2-16.2 23.20 21 SPT 43 16.2-16.65 U10021.2m18blows100% B 44 16.2-17.2 SPT 22.2m 22 U10045 17.2-17.65 1 1 1 1 1 1 4 17.6-17.8 D 46 23 D 47 17.2-18.2 SPT 48 18.2-18.65 CASING 24 B 49 18.2-19.2 • 0-9m:Plain 19.2-19.6 U10050 25 • 9-10m:Slotted D 51 19.6-19.8 with geosock D 52 19.2-20.2 26 SPT 53 20.2-20.65 BACKFILL D 54 20.2-21.2 27 • 0-0.5m:Cement U10055 21.2-21.6 • 0.5-1m:Bentonite D 56 21.6-21.8 28 • 1-6.8m:Gravel D 57 21.2-22.5 • 6.8-8.8m:Bentonite B 58 22.5 • 8.8-10m:Gravel 29 • 10-11mBentonite • 11-23.2m:Gravel 30 RWL

31 WaterLevel8.1mbgl 18/10/2016 Notes: Risingheadtest: RWL8.6mbgl Bailingfor15mins. WL depressedto10.4mbgl. Rose instantlyto9.6m. No changeover30mins.

All hand Penotrometer Tests shown in strength column given as average of three tests. Abbreviations:B=BulkBag,U=Undisturbed,D=Disturbed,W=WaterSample,S=Strike,RWL=RestWaterLevel

P:\Hanson Condover Geotechnical(2103)\30 - Data\BoreholeLogs\BoreholeLogsr5\BH6 23/11/201612:33