Douglas Partners Pty Ltd ABN 75 053 980 117 www.douglaspartners.com.au Unit 5, 50 Topham Road Smeaton Grange NSW 2567 Phone (02) 4647 0075 Fax (02) 4646 1886 Project 76678.00 Macarthur Developments 4 June 2015 1150 Camden Valley Way RWG LEPPINGTON NSW 2765 Attention: Mr Stephen McMahon Email: [email protected] Dear Sirs Site Clean-up Status Report Lot 101 Greendale Road, Bringelly, NSW 1. Introduction Douglas Partners Pty Ltd (DP) was commissioned by Macarthur Developments (MD) to prepare a status report for remediation works currently being undertaken on Lot 101 Greendale Road, Bringelly, NSW which is currently owned and occupied by Boral Property Group. Transpacific Industrial Solutions Pty Ltd (TIS) previously prepared Surplus Site Clean Up Plan Boral Bringelly (Job No.: QN666224) dated 24 September 2014 (TIS, 2014). The TIS report includes the identification of four areas within the site where stockpiles of waste are present. 2. Background DP understands the following with respect to the site and MD’s requirements: Clean-up of the site, with reference to TIS (2014) is currently being conducted by remediation contractor Budget Demolitions; MD have been instructed by the Commonwealth Bank to provide a status report that investigates and reports on the progress of the clean-up of the Boral land in accordance with the requirements of the TIS (2014); and MD has requested the report include the following information, with particular reference to the four areas of concern identified Figure 2 of TIS (2014); o Inspect the site and interview the site foreman from Budget Demolitions; o Observe the extent of clean up works underway, completed and yet to be commenced as referenced in TIS (2014); o Identify and estimate of the scale of clean up works that, based on progress, will be required after Monday 15th June 2015 to ensure compliance with TIS (2014); and o Identify and estimate of the cost and timeframe of any clean up works, based on progress, that will be required after Monday 15th June 2015 to ensure compliance with TIS (2014). Brisbane • Cairns • Canberra • Darwin • Geelong • Gladstone • Gold Coast • Macarthur • Melbourne • Newcastle • Perth • Sunshine Coast • Sydney • Townsville • Wollongong • Wyong Page 2 of 3 3. Comments TIS (2014) identified four areas where bricks and waste material area stockpiles within the site (as shown on Figure 2 of TIS, 2014). The report presents a ‘preferred clean-up strategy’ and ‘ soil clean- up validation plan’. DP inspected the four areas on 3 June 2015. A summary of the observation made during the inspection is outlined below: Clean-up of the three northern most areas was approximately 75% complete. Based on discussion with Budget Demolition’s foreman, in the order of 30 truckloads (approximately 280 m3) of waste material had been excavated and disposed from the site. The foreman estimated that the clean-up of the three northern areas would be complete in approximately 2 – 4 days; and Clean-up of the southern area had not commenced. Budget Demolitions estimate approximately 200 m3 of stockpiled bricks in the southern area. Based on the progress of works to date and the contractors estimated time for completion, we anticipate that clean-up of the four nominated areas within the site should be completed on site by 15 June, with the possible exception of the brick piles located in the southern area of the site. For the purposes of this letter, as a conservative estimate, we have assumed in our costing that all of the brick piles in the southern area will require removal following the 15 June 2015. We have used the following assumptions in preparing this estimate: Volume of bricks to be removed: 200 m3 (estimated by contractor); Disposal rate for bricks: $350 per m3 including haulage (typical rate); Day rate for machines and labour: $5000 per day (typical rate); and Time required to remove 200 m3: 10 days (DP Estimate). Table 1, below presents below presents a breakdown of the estimate based on the above assumptions: Table 1: Cost Estimate Item Cost Estimate (ex. GST) Plant and Labour hire (10 days at $5000 per day) $50,000 Disposal Fee (200 m3 at $350 per m3) $70,000 Consultants fees (waste classification, validation) $10,000 Sub-total $130,000 Contingency (15% of sub-total) $19,500 Total $149,500 Site Clean-up Status Project 76678.00 Lot 101 Greendale Road, Bringelly June 2015 20 August 2015 Transpacific Industrial Solutions Prepared for Phil Taylor Boral Limited PO Box 42 South Wentworthville NSW 2145 By Transpacific Industrial Solutions Contact: Greg Bartlett Senior Environmental Scientist tel 1300 099 498 email [email protected] Document Reference: HC‐2015‐49 Job No: QN783837 Revision No. 1 Transpacific Industries Pty Ltd 1/423‐427 Victoria Street, Wetherill Park NSW 2164 PO Box 6460, Wetherill Park BC NSW 2164 Phone: 1300 099 498 Surplus Site Clean‐Up Validation Report Boral Bringelly | Greendale Road, Bringelly, NSW (Lot 101 DP 1203966) CONTENTSi Executive Summary 1 1 Introduction, Objective and Scope 2 1.1 Introduction 2 1.2 Objectives 2 1.3 Scope of Works 2 2 Site Summary Information 4 2.1 Site Identification 4 2.2 Site Description 4 2.3 Surrounding Land Use 4 2.4 Topography and Vegetation 4 2.5 Geology and Soils 4 3 Adopted Surplus Site Clean‐Up Strategy 6 4 Sampling, Analysis and Quality Plan 7 4.1 Regulatory Guidelines 7 4.2 Sediment Sampling Methodology 7 4.3 Soil Sampling Methodology 7 4.4 Sampling QA/QC 8 4.5 Decontamination 9 4.6 Laboratory Analysis 9 5 Surplus Site Clean‐Up Validation Criteria 10 5.1 Sediment Validation Criteria 10 5.2 Soil Validation Criteria 11 5.3 Waste Classification Criteria 13 6 Quality Assurance/Quality Control 16 6.1 Quality Assurance/Quality Control Results 18 6.1.1 Precision 20 6.1.2 Accuracy 21 6.1.3 Representativeness 22 6.1.4 Holding Times 23 6.1.5 Comparability 23 6.1.6 Completeness 23 6.1.7 Sensitivity 23 6.1.8 QA/QC Assessment Conclusions 23 7 Laboratory Analytical Results 24 7.1 Soil 24 7.1.1 Heavy Metals 25 7.1.2 TPH/ BTEX 25 Rev 1 page i Surplus Site Clean‐Up Validation Report Boral Bringelly | Greendale Road, Bringelly, NSW (Lot 101 DP 1203966) 7.1.3 PAHs 25 7.1.4 OCPs/ OPPs 25 7.1.5 PCBs 25 7.1.6 Asbestos 25 7.2 Sediment 26 7.2.1 Heavy Metals 26 7.2.2 UT PAHs 27 7.2.3 UT OCP/OPP 28 7.2.4 UT PCBs 29 7.2.5 Asbestos 29 7.3 Waste Classification & Disposal 30 8 Discussion of Analytical Results 31 8.1 Soil 31 8.2 Sediments 31 9 Conclusions 33 10 Limitations 34 Rev 1 page ii Surplus Site Clean‐Up Validation Report Boral Bringelly | Greendale Road, Bringelly, NSW (Lot 101 DP 1203966) Tables Table 1 | Sample Register Table 2 | Soil Summary Results Table 3 | Sediment Summary Results Table 4 | Stockpile Waste Classification Figures Figure 1 Site Location Figure 2 Site Layout Figure 3a Sampling Locations and Exceedances – Area 1 Figure 4a Sampling Locations and Exceedances – Area 2 Part 1 Figure 4b Sampling Locations and Exceedances – Area 2 Part 2 Figure 5a Sampling Locations and Exceedances – Area 3 Figure 6a Sampling Locations and Exceedances – Area 4 Part 1 Figure 6b Sampling Locations and Exceedances – Area 4 Part 2 Figure 6c Sampling Locations and Exceedances – Area 4 Part 3 Figure 7 Sampling Locations and Exceedances – Area 5 Figure 8 a Sampling Locations and Exceedances – Area 6 Part 1 Figure 8 b Sampling Locations and Exceedances – Area 6 Part 2 Figure 8c Sampling Locations and Exceedances – Area 6 Part 3 Figure 8 d Sampling Locations and Exceedances – Area 6 Part 4 Rev 1 page iii Surplus Site Clean‐Up Validation Report Boral Bringelly | Greendale Road, Bringelly, NSW (Lot 101 DP 1203966) Appendices Appendix A Test Pit Bore Logs Appendix B Decontamination and Calibration Certificates Appendix C Laboratory Reports and Chain of Custody Documentation Appendix D Laboratory QA/QC Reports Appendix E Waste Classification Reports Appendix F Waste Disposal Documentation Appendix G Clearance Certificates Appendix H 95% UCL Calculation Rev 1 page iv Surplus Site Clean‐Up Validation Report Boral Bringelly | Greendale Road, Bringelly, NSW (Lot 101 DP 1203966) Abbreviations µg/L micrograms per litre AHD Australian Height Datum ANZECC Australian and New Zealand Environment and Conservation Council ARMCANZ Agriculture and Resource Management Council of Australia and New Zealand bgs below ground surface COC Chain of Custody DQO Data Quality Objectives GSW General Solid Waste ISQG Interim Sediment Quality Guidelines m2 Square Metre m3 Cubic Metre m bgs Metres Below Ground Surface mg/kg Milligrams per kilogram NATA National Association of Testing Authorities NEPC National Environment Protection Council NEPM National Environment Protection Measure NHMRC National Health and Medical Research Council NSW EPA New South Wales Environment Protection Authority OCP Organochlorine Pesticides PAH Polycyclic Aromatic Hydrocarbon PID Photoionisation Detector ppm parts per million RSW Restricted Solid Waste SB Soil bore SIL Soil Investigation Level SSC Surplus Site Clean‐Up SSCP Surplus Site Clean‐Up Plan TPH Total Petroleum Hydrocarbons TPI Transpacific Industrial Solutions Pty Ltd Rev 1 page v Surplus Site Clean‐Up Validation Report Boral Bringelly | Greendale Road, Bringelly, NSW (Lot 101 DP 1203966) Executive Summary Transpacific Remediation Services, a division of Transpacific Industrial Solutions Pty Ltd (TPI) were commissioned by Boral Limited to undertake surplus site clean‐up (SSC) validation works at the Boral Bringelly site located at Lot 2 Greendale Road, Bringelly. The site is legally identified as Lot 101 DP 1203966 (formerly Lot 11 DP 1125892) (the ‘site’) (refer Figure 1).