Appendix H

700 Pages·2016·17.93 MB·English

by  Masters, Chris

Appendix H
PRELIMINARY ENVIRONMENTAL SITE ASSESSMENT
Lake Macquarie Transport Interchange 30011465 | March 2016

Preliminary Environmental Site
Assessment
Document No. LMTI-REP-ESA-001

For: Lake Make Macquarie City Council
NOVEMBER 15, 2013
Project Name: Lake Macquarie Transport Interchange
Project Number: 30011465
Report for: Lake Make Macquarie City Council

PREPARATION, REVIEW AND AUTHORISATION
Revision # Date Prepared by Reviewed by Approved for Issue by
Penelope Ford /
Draft 23/09/2013 Peter Horn Craig Sutton
Daniel Saunders
Final 26/09/2013 Daniel Saunders Peter Horn Craig Sutton
Daniel Saunders /
Rev01 15/11/2013 Penelope Ford Craig Sutton
Renae Gifford

ISSUE REGISTER
Distribution List Date Issued Number of Copies
Lake Make Macquarie City Council: 15/11/2013 1
SMEC staff: 15/11/2013 1
Associates:
Newcastle Office Library (SMEC office location): 15/11/2013 1
SMEC Project File: 15/11/2013 1

SMEC COMPANY DETAILS
SMEC AUSTRALIA PTY LTD
74 Hunter Street, Newcastle, NSW, 2300, Australia
Tel: [phone]
Fax: [phone]
Email: [email protected]
www.smec.com
The information within this document is and shall remain the property of SMEC AUSTRALIA PTY LTD
EXECUTIVE SUMMARY
Lake Macquarie City Council (LMCC) engaged SMEC Australia Pty Ltd (SMEC) to
conduct a Preliminary Environmental Site Assessment (PESA) at Lake Macquarie
Transport Interchange (LMTI) located between Glendale and Cardiff NSW (the site).
The PESA was required as part of the LMCC’s due diligence prior to commencing future
land title for the site. The PESA was conducted in accordance with the SMEC’s Sampling
and Analysis Plan (SAQP) dated 7 August 2013, as reviewed by the NSW EPA Site
Auditor, Mr Ian Gregson on 15 August 2013.
The site includes private property (Bendlink brewery site), the Downer rail yard, the
Downer fill mound, part of the Glendale Super Centre carpark, raised fill area (former
cricket pitch), sedimentation pond and associated sludge area. This PESA report presents
the findings of the investigation conducted at the Site by SMEC in July and August 2012.
The aim of the PESA was to assess contamination status of the subsurface in the
immediate vicinity of the LMTI which is associated with previous and current landuse
operations and past land filling activities.
This report presents the details of the field investigations, laboratory analysis results and
provides interpretive comments for forty nine (49) testpits to an approximate depth of 3-4
metres below ground level (mbgl), five (5) borehole locations drilled to top of rock profile
(7-11 mbgl), seven (7) handauger locations (0.3-1.0 mbgl), seven (7) groundwater well
locations (installed to 4-12 mbgl), one (1) seepage water location from a testpit and one
(1) groundwater location from an existing/ historic bore location.
Sampling and analysis results were compared against relevant the National Environment
Protection Measures (NEPM) - Schedule B(1) Guideline on Investigation Levels for Soil
and Groundwater. The NEPM was first published in 1999, and updated in 2013 by the
National Environment Protection Council (NEPC) and provides national standards for a
variety of environmental issues, including the assessment of site contamination. The
NEPM has been considered, in the context of the future use of the site as road
infrastructure (commercial/ industrial) with associated road verges and footpaths (public
open space).
Findings
(cid:131) A previous site contamination assessment undertaken by KME (1996) at the site
indicated that residual metal, total petroleum hydrocarbons (TPH), or total recoverable
hydrocarbons (TRH) and Polycyclic Aromatic Hydrocarbons (PAHs) contamination is
present in soil and groundwater.
(cid:131) Current analytical soil results indicate:
- Concentrations of TPH exceed the NEPM 2013 Management Limits (MLs)
for TPH fractions within soils sampled at five (5) sampling locations.
- Concentrations of lead and/ or Benzo(a)pyrene exceed the NEPM (2013)
Health Investigation Levels (HILs) for recreational parks and open space in
soils at nine (9) locations.
- Concentrations of PAHs were below HILs or laboratory limits of reporting
(LOR) in all remaining sample locations.
- Elevated arsenic, copper, zinc concentrations exceeded the NEPM (2013 or
1999) Ecological Investigation Levels (EILs) within soils sampled at twenty
nine (29) locations.
- Concentrations of heavy metals were below HILs, EILs or laboratory LOR in
all remaining sample locations.
- Concentrations of BTEX, OCPs, OPPs, PCBs, SVOCs, VOCs were below
LOR at all locations.
- Asbestos was identified at surface or in near surface fill material at 10
locations.
(cid:131) Current analytical groundwater results indicate:
- Concentrations of TPH were detected above the laboratory LOR in one (1)
groundwater sample GW2 (and duplicate QA1).
- Concentrations of TPH were below laboratory LOR in the remaining six (6)
groundwater samples.
- In terms of groundwater Health Screening levels (HSLs) for vapour intrusion
for BTEX and TPH C6-C10 and >C10-C16 for recreational open space,
HSLs are all ‘not limited’ (NL, i.e. cannot exist in concentrations high enough
to cause unacceptable risk to health, for scenarios where groundwater is at a
depth of 2 m mbgl or greater).
- Heavy metal concentrations (either Cd, Cu, Ni and/ or Zn) were above the
adopted Groundwater Investigation Levels (GILs) for protection of aquatic
ecosystems in all groundwater samples.
- Concentrations of phenols, PAHs, BTEX, OCPs, OPPs, PCBs, SVOCs,
VOCs were below laboratory LOR in all seven (7) groundwater samples.

(cid:131) The depth of fill across the site varies from 0mbgl to greater than 3.9mbgl. The
nature of the fill varies from clayey material to gravelly sandy clay with varying
amounts (usually less than 10%) of anthropogenic litter and building rubble.

Conclusions and Recommendations
(cid:131) Elevated heavy metal and TPH concentrations in the saturated sludge pond
sediments (deemed geotechnically unsuitable due to saturation) warrant further
assessment to define the extent of contamination and volume for offsite disposal.
(cid:131) SMEC recommend that Lake Macquarie City Council report contamination levels to
the various current site owners.
(cid:131) SMEC conclude, subject to further delineation investigations in the sludge pond area,
the preparation and implementation of an adequate Soil Management Plan (SMP),
will deem the site suitable for the proposed road alignment development.

Lake Macquarie Transport Interchange 30011465 | Revision No. 01 | 15 November 2013 Page | ii
TABLE OF CONTENTS
1 INTRODUCTION 5
1.1 Background 5
1.2 Contaminated Site Project Related Activities and Objectives 5
1.3 Scope of Work 6
1.4 Published Guidelines And Framework 7
1.5 Limitations 8
2 SITE DETAILS 12
2.1 Site Location and Setting 12
2.2 Site Description 13
2.2.1 Proposed Transport Link 13
2.3 Surface Conditions 13
2.4 Vegetation 14
2.5 Geology and Hydrogeology 14
2.6 Topography and Hydrology 15
2.7 Previous Reports 15
2.7.1 Site Contamination Assessment and Geotechnical Investigation Railway
Maintenance Facility and Adjoining Land Main Road Cardiff NSW March
1996. KME Pty Ltd. 15
2.7.2 Geotechnical and Environmental Investigation, April 2010. RCA Australia16
2.8 NSW EPA Contaminated Land Search 17
2.9 Historical Aerial Photographs 17
2.10 Site Walkover 19
2.10.1 Purpose 19
2.10.2 Methodology 20
2.10.3 Site Observations 20
3 CONCEPTUAL SITE MODEL (CSM) 12
3.1 Potential Sources of Contamination 12
3.1.1 On Site 12
3.1.2 Surrounding Land 12
3.2 Potential Contaminants of Concern and Areas of Environmental Concern 13
3.3 Potential Receptors of Concern 15
4 ASSESSMENT CRITERIA 12
4.1 INTRODUCTION ASSESSMENT CRITERIA 12
4.1.1 Health Screening Levels for Petroleum Hydrocarbons 12
4.1.2 Health Screening Levels for Organic and Inorganic Chemicals 13
4.1.3 Ecological Screening Levels for Metals and Other Contaminants 14

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4.1.4 Guidelines for Protection of Aquatic Ecosystems 15
4.2 Adopted Soil Assessment Criteria 16
4.3 Adopted Groundwater Assessment Criteria 16
4.3.1 Asbestos Criteria 16
4.4 Aesthetic Criteria 17
5 SITE INVESTIGATION AND METHODOLOGY 18
5.1 Background 18
5.2 Sampling Analysis and Quality Plan 18
5.2.1 Soil Sampling Program 20
5.2.2 Sampling Depths and Intervals 20
5.2.3 Methods of Soil Sampling 20
5.2.4 Groundwater Well Installation and Construction 21
5.2.5 Well Gauging and Sampling 21
5.2.6 Decontamination Procedures 21
5.2.7 Sample Storage and Handling 22
5.2.8 QA/QC Documentation 22
5.2.9 Laboratories 22
6 DATA QUALITY OBJECTIVES 24
6.1 Data Quality Objectives (DQOs) 24
6.2 Step 1: Definition of Problem 24
6.2.1 The Planning Team 24
6.2.2 Decision Makers 25
6.2.3 Technical Staff and Data Users 25
6.2.4 Stakeholders 25
6.2.5 Resource Constraints 26
6.3 Step 2: Identify the Decision 26
6.4 Step 3: Identify the Inputs to the Decision 26
6.5 Step 4: Define Study Boundaries 27
6.6 Step 5: Decision Rules 27
6.7 Step 6: Acceptance Criteria 28
6.7.1 Baseline Conditions 28
6.7.2 Decision Errors 29
6.8 Step 7: Data Collection Process 29
7 QUALITY ASSURANCE AND QUALITY CONTROL 31
7.1 Quality Control (QC) 31
7.1.1 Sample Handling, Storage and Transportation 32
7.1.2 Laboratory Accreditation 32
7.1.3 Analytical Methods 32

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7.2 Analytical Data Quality Objectives 32
7.2.1 Completeness 32
7.2.2 Accuracy 33
7.2.3 Precision 33
7.2.4 Sensitivity 35
7.2.5 Laboratory Control Spikes 35
7.2.6 Laboratory Blanks 35
7.2.7 Holding Times 36
7.2.8 Representativeness 36
7.3 QC Decision Error Limits 36
7.4 Summary QC Assessment 36
8 SITE ASSESSMENT 38
8.1 Field Observations - Soils 38
8.1.1 Location of Testpit Excavations and Boreholes 38
8.1.2 Fill material and Soil Lithology 38
8.1.3 Soil Vapour and Odours 40
8.2 Soil Analytical Results 40
8.3 Field Observations - Groundwater 43
8.3.1 Location of Monitoring Bores 43
8.3.2 Gauging of Monitoring Bores 43
8.3.3 Groundwater Quality Parameters 44
8.4 Groundwater Laboratory Analysis Results 46
9 FINDINGS 48
9.1 Soil 48
9.2 Groundwater 49
9.3 Discussion of Principle Study Questions Based on Findings 49
9.4 Adequacy of Assessment 50
10 SUMMARY CONCLUSIONS AND RECOMMENDATIONS 55
10.1 Summary Objectives 55
10.2 Summary 55
10.2.1 Proposed Material Re-use Options 57
10.3 Summary Recommendations 58
10.3.1 Phase 1 Investigation 58
10.3.2 Phase 2 Investigations 58
10.3.3 Hydrogeological Investigation, Containment Cell Design and CSM 59
10.3.4 Soil Management Plan (including Re-use of material Report) 59
10.3.5 Management of Imported Topsoil and/or Final Surface Layer 60
10.3.6 Asbestos Management Plan 61

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10.3.7 Management of Geotechnically Unsuitable Material 61
10.3.8 Management of Winding Creek tributary waters 61
11 REFERENCES 62

APPENDIX A: SITE FIGURE
APPENDIX B: SITE PHOTOS & HISTORICAL AERIAL PHOTOGRAPHS
APPENDIX C: BORELOGS AND GROUNDWATER WELLS
APPENDIX D: FIELD NOTES
APPENDIX E: CALIBRATION CERTIFICATES
APPENDIX F: LABORATORY SUMMARY TABLE
APPENDIX G: LABORATORY REPORTS AND COC

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