Rowland Hassall School Relocation 49 Woodville Road, Chester Hill
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Rowland Hassall School Relocation 49 Woodville Road, Chester Hill Contamination Investigation Report number: 15-GS91B August 2015 Prepared for NSW Department of Education A division of the Department of Finance, Services and Innovation Rowland Hassall School Relocation – 49 Woodville Road, Chester Hill – Contamination Investigation Rowland Hassall School Relocation 49 Woodville Road, Chester Hill Contamination Investigation Report number: 15-GS91B August 2015 Document Control Approved for Issue Issue / Revision Author Reviewer Name Date Final P. Anderson C. Karwaj P. Anderson 21.8.2015 Contact name Peta Anderson Level 14 McKell Building 2-24 Rawson Place Sydney NSW 2000 T: 02 9372 7834 F: 02 9372 7877 E: [email protected] W: www.publicworks.nsw.gov.au © Crown in right of NSW through the Department of Finance, Services and Innovation, 2015 This publication is copyright and may incorporate moral rights of an individual. Other than for the purposes of and subject to the conditions prescribed under the Copyright Act, no part of it may, in any form or by any means, be reproduced, altered, manipulated, stored in a retrieval system or transmitted without prior written consent of the copyright owner or owner of moral rights. Any inquiries relating to consents and use of this publication, including by NSW Government agencies must be addressed to NSW Water Solutions, NSW Public Works. While this publication has been formulated with all due care, the State of New South Wales does not warrant or represent that the report is free from errors or omissions, or that it is exhaustive. The State of NSW disclaims, to the extent permitted by law, all warranties, representations or endorsements, express or implied, with regard to this publication including but not limited to, all implied warranties of merchantability, fitness for a particular purpose, or non- infringement. The State of NSW further does not warrant or accept any liability in relation to the quality or accuracy of this publication and no responsibility is accepted by the State of NSW for the accuracy, currency, reliability and correctness of any information in this publication provided by the client or third parties. Rowland Hassall School Relocation – 49 Woodville Road, Chester Hill – Contamination Investigation Table of contents 1 EXECUTIVE SUMMARY ....................................................................................................................1 2 INTRODUCTION ...............................................................................................................................4 2.1 General ................................................................................................................................. 4 2.2 Data Quality Objectives .......................................................................................................4 2.3 Objectives ............................................................................................................................5 2.4 Scope of Work ......................................................................................................................5 2.5 Proposed Development .......................................................................................................6 2.6 Limitations............................................................................................................................6 3 SITE IDENTIFICATION ......................................................................................................................6 4 SITE HISTORY ................................................................................................................................7 4.1 Section 149 Planning Certificate .........................................................................................7 4.2 WorkCover NSW – Dangerous Goods ................................................................................8 4.3 NSW Office of Environment and Heritage Records ...........................................................8 4.4 Land Title Records...............................................................................................................8 4.5 Historical Aerial Photographs .............................................................................................9 4.6 Other Documentation ........................................................................................................10 5 SITE CONDITIONS AND SURROUNDING ENVIRONMENT ....................................................................10 5.1 Zoning and Current Land Use ...........................................................................................10 5.2 Topography and Drainage ................................................................................................. 11 5.3 Site Inspection ...................................................................................................................11 5.4 Surrounding Land Use ......................................................................................................12 5.5 Local Sensitive Environment ............................................................................................ 12 6 GEOLOGY, HYDROGEOLOGY AND ACID SULFATE SOIL ...................................................................13 6.1 Geology ..............................................................................................................................13 6.2 Hydrogeology .....................................................................................................................13 6.3 Acid Sulfate Soil ................................................................................................................13 7 POTENTIAL ENVIRONMENTAL CONCERN ........................................................................................14 8 FIELD INVESTIGATION ...................................................................................................................15 8.1 Investigation Rationale ......................................................................................................15 8.2 Fieldwork ............................................................................................................................15 8.3 Field QA/QC........................................................................................................................15 9 LABORATORY INVESTIGATION .......................................................................................................16 9.1 Laboratory Analysis ..........................................................................................................16 9.2 Laboratory QA/QC .............................................................................................................18 10 ASSESSMENT CRITERIA.............................................................................................................18 NSW Public Works Rowland Hassall School Relocation – 49 Woodville Road, Chester Hill – Contamination Investigation 11 RESULTS AND SITE CHARACTERISTICS ......................................................................................22 11.1 General ...............................................................................................................................22 11.2 Ground Conditions ............................................................................................................22 11.3 Groundwater Conditions ...................................................................................................26 11.4 Soil Analytical Results ......................................................................................................27 11.5 Field and Laboratory QA/QC .............................................................................................28 11.6 Qualitative Assessment of Risk ........................................................................................29 12 CONCLUSION AND RECOMMENDATIONS .....................................................................................30 13 REFERENCES ............................................................................................................................31 Tables 1 Summary of Analytical Results - Heavy Metals, Cation Exchange Capacity (CEC), pH and Total Organic Carbon (TOC) 2 Summary of Analytical Results - Total Recoverable Hydrocarbons (TRH) / Benzene, Toluene, Ethylbenzene and Total Xylene (BTEX) 3 Summary of Analytical Results – Polynuclear (Polycyclic) Aromatic Hydrocarbons (PAHs) 4 Summary of Analytical Results - Organochlorine Pesticides (OCPs)/ Polychlorinated Biphenyls (PCBs) 5 Summary of Analytical Results – Asbestos Figures 1 Site Location Plan 2 Site Plan 3 Borehole Location Plan 4 100 Year ARI Flood Extent Map Plates 1 to 12 Appendices A Section 149 Planning Certificate B Land Title Records C Historical Aerial Photographs D Geotechnical Terminology E Borehole Logs F Analytical Results and Laboratory QA/QC Reports NSW Public Works Rowland Hassall School Relocation – 49 Woodville Road, Chester Hill – Contamination Investigation 1 Executive Summary Any party relying on this report is advised that this executive summary must be read in conjunction with the attached report of which this summary forms a part. Introduction Government Architects Office (GAO - NSW Public Works), on behalf of the NSW Department of Education (DoE), commissioned the Specialist Services Section (NSW Public Works, NSW Water Solutions) to undertake a Contamination