Universal Property Group Pty Ltd · P1504907JR01V01 – October 2015 Page 5 1 Overview 1.1...

ENVIRONMENTAL

WATER

WASTEWATER

GEOTECHNICAL

CIVIL

PROJECT

MANAGEMENT

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Universal Property Group Pty Ltd

Preliminary Site Investigation:

Lots 83 and 84 DP 2912,

Lot 500 DP 1195372, Lot 213 DP 1189773,

and Lot 81 DP 2912,

35 and 37 Boundary Road, and

29, 31 and 33 Schofields Road,

Schofields, NSW

P1504907JR01V01

October 2015

martens


Lots 83 and 84 DP2912, Lot 500 DP1195372, Lot 213 DP1189773 and Lot 81 DP 2912

35 and 37 Boundary Road and 29, 31 and 33 Schofields Road, Schofields, NSW. P1504907JR01V01 – October 2015

Copyright Statement

Martens & Associates Pty Ltd (Publisher) is the owner of the copyright subsisting in this publication. Other than as

permitted by the Copyright Act and as outlined in the Terms of Engagement, no part of this report may be reprinted

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known or hereafter invented (including microcopying, photocopying, recording, recording tape or through

electronic information storage and retrieval systems or otherwise), without the prior written permission of Martens &

Associates Pty Ltd. Legal action will be taken against any breach of its copyright. This report is available only as

book form unless specifically distributed by Martens & Associates in electronic form. No part of it is authorised to be

copied, sold, distributed or offered in any other form.

The document may only be used for the purposes for which it was commissioned. Unauthorised use of this document

in any form whatsoever is prohibited. Martens & Associates Pty Ltd assumes no responsibility where the document is

used for purposes other than those for which it was commissioned.

Limitations Statement

The sole purpose of this report and the associated services performed by Martens & Associates Pty Ltd is to provide a

Preliminary Site Investigation at the subject site in accordance with the scope of services set out in the contract /

quotation between Martens & Associates Pty Ltd and Universal Property Group Pty Ltd (hereafter known as the

Client). That scope of works and services were defined by the requests of the Client, by the time and budgetary

constraints imposed by the Client, and by the availability of access to the site.

Martens & Associates Pty Ltd derived the data in this report primarily from a number of sources which included

correspondence regarding the proposal, examination of records in the public domain, interviews with individuals

with information about the site or the project, and field explorations conducted on the dates indicated. The

passage of time, manifestation of latent conditions or impacts of future events may require further examination /

exploration of the site and subsequent data analyses, together with a re-evaluation of the findings, observations and

conclusions expressed in this report.

In preparing this report, Martens & Associates Pty Ltd may have relied upon and presumed accurate certain

information (or absence thereof) relative to the site. Except as otherwise stated in the report, Martens & Associates

Pty Ltd has not attempted to verify the accuracy of completeness of any such information (including for example

survey data supplied by others).

The findings, observations and conclusions expressed by Martens & Associates Pty Ltd in this report are not, and

should not be considered an opinion concerning the completeness and accuracy of information supplied by others.

No warranty or guarantee, whether express or implied, is made with respect to the data reported or to the findings,

observations and conclusions expressed in this report. Further, such data, findings and conclusions are based solely

upon site conditions, information and drawings supplied by the Client etc. in existence at the time of the

investigation.

This report has been prepared on behalf of and for the exclusive use of the Client, and is subject to and issued in

connection with the provisions of the agreement between Martens & Associates Pty Ltd and the Client. Martens &

Associates Pty Ltd accepts no liability or responsibility whatsoever for or in respect of any use of or reliance upon this

report by any third party.

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October 2015

Copyright Martens & Associates Pty Ltd

All Rights Reserved

Head Office

Suite 201, 20 George Street

Hornsby, NSW 2077, Australia

ACN 070 240 890 ABN 85 070 240 890

Phone: +61-2-9476-9999

Fax: +61-2-9476-8767

Email: [email protected]

Web: www.martens.com.au

Document and Distribution Status

Author(s) Reviewer(s) Project Manager Signature

Carolyn Stanley Mr Gray Taylor

Mr Andrew Norris Mr Gray Taylor

Re

vis

ion

No

.

Sta

tus

Re

lea

se D

ate

Document Location

File

Co

py

Un

ive

rsa

l

Pro

pe

rty

Gro

up

Pty

Ltd

- - -

1 Draft 14.09.2015 1E, 1P, 1H 1P

1 Final 09.10.2015 1E, 1P, 1H 1P

Distribution Types: F = Fax, H = hard copy, P = PDF document, E = Other electronic format. Digits indicate number of document copies.

All enquiries regarding this project are to be directed to the Project Manager.

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Contents

1 OVERVIEW ................................................................................................................ 5

1.1 Introduction 5

1.2 Objectives 5

1.3 Project Scope 5

1.4 Abbreviations 6

2 SITE DESCRIPTION .................................................................................................... 7

2.1 Site Location and Existing Land Use 7

2.2 Hydrogeology 8

3 SITE BACKGROUND ASSESSMENT ........................................................................... 9

3.1 Historical Site Records Review 9

3.2 NSW OEH Records 9

3.3 Historical Aerial Photograph Analysis 10

3.4 Walkover Site Inspection 13

4 AREAS OF ENVIRONMENTAL CONCERN/CONTAMINANTS OF PRIMARY

CONCERN .............................................................................................................. 16

5 CONCLUSIONS AND RECOMMENDATIONS ........................................................ 17

5.1 Conclusions 17

5.2 Recommendations 18

6 LIMITATIONS STATEMENT ....................................................................................... 19

7 REFERENCES ........................................................................................................... 20

8 ATTACHMENT A – SITE PLAN ................................................................................. 21

9 ATTACHMENT B – AEC LOCATIONS ..................................................................... 23

10 ATTACHMENT C – HISTORICAL AERIAL PHOTOGRAPHS ..................................... 28

11 ATTACHMENT D – BLACKTOWN CITY COUNCIL DA/BA/CC CORRESPONDENCE

................................................................................................................................ 39

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1 Overview

1.1 Introduction

Martens & Associates Pty Ltd has prepared this Preliminary Site

Investigation (PSI) for Universal Property Group Pty Ltd (‘the Client’) to

support a site residential development at 35 and 37 Boundary Road,

and 29, 31 and 33 Schofields Road, Schofields, NSW (‘the site’). The

study area includes Lots 83 and 84 DP 2912, Lot 500 DP 1195372, Lot 213

DP 1189773 and Lot 81 DP 2912.

1.2 Objectives

Investigation objectives include:

o Identification of historic and current potentially contaminating

site activities.

o Evaluation of potential areas of environmental concern (AEC)

and associated contaminants of primary concern (COPC).

o Provide comment on suitability of site for future development use

and provide recommendations for a detailed site investigation

(DSI) including possible intrusive soil investigations if required.

1.3 Project Scope

Scope of works includes:

o Walkover inspection to review current land use, potential

contaminating activities and neighbouring land uses.

o Review available Blacktown City Council (BCC) site

development consents.

o Review of 8 historic aerial photographs to assess past site and

surrounding land use patterns.

o Review NSW OEH (formerly NSW EPA) notices under the

Contaminated Land Management Act (1997).

o Prepare a preliminary site investigation (PSI) report in general

accordance with the relevant sections of ASC NEPM (1999,

amended 2013), NSW OEH (2011) and DEC (2006).

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1.4 Abbreviations

ACM - Asbestos containing material

AEC – Area of environmental concern

ASC NEPM – Assessment of Site Contamination - National Environmental

Protection Measure (1999 amended 2013).

AST – Above ground storage tank

BA – Building application

BCC – Blacktown City Council

BTEX – Benzene, toluene, ethyl benzene, xylene

COPC – Contaminants of primary concern

DEC – NSW Department of Environment and Conservation

DECC – Department of Environment and Climate Change

DP – Deposited plan

DSI – Detailed site investigation

EPA – NSW Environmental Protection Authority

HM – Heavy metals

LGA – Local government area

MA – Martens & Associates Pty Ltd

mAHD – Metres, Australian Height Datum

mbgl – Metres below ground level

OCP – Organochloride pesticides

OEH – NSW Office of Environment and Heritage

OPP – Organophosphate pesticides

PACM – Potential asbestos containing material

PAH – Polycyclic aromatic hydrocarbons

PSI – Preliminary site investigation

SAC – Site acceptance criteria

TRH – Total recoverable hydrocarbons

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2 Site Description

2.1 Site Location and Existing Land Use

Site information is summarised in Table 1. Site location and general

surrounds are provided in Figure 1 (Attachment A).

Table 1: Site background information.

Investigation address and lot title 35 and 37 Boundary Road, and 29, 31 and 33 Schofields Road, Schofields,

NSW.

Lot and DP (Title Information) Investigation area includes 5 lots:

Lot 83 DP 2912 (35 Boundary Road).

Lot 84 DP 2912 (37 Boundary Road).

Lot 500 DP 1195372 (29 Schofields Road).



Investigation area 8.4 ha (approximately)

Local Government Area (LGA) Blacktown City Council.

Zoning SEPP (SRGC) 2006: R2, SEPP (SRGC) 2006: RE1 (37 Boundary Road), and

SEPP (SRGC) 2006: R3 (27 Boundary Road and 29 and 31 Schofields Road),

and

SEPP (SRGC) 2006: R3, SEPP (SRGC) 2006: SP2 (33 Schofields Road).

Site description All lots are residential properties with existing dwellings and sheds. Dams are

located on Lots 84, 500 and 213.

The site is bordered by Boundary Road and rural residential properties to the

north east, Schofields Road and rural residential properties to the south east,

Schofields Farm Road and rural residential properties to the south west, and

rural residential properties to the north west.

The site has low to moderate grades of 0 – 15%. Lot 84 drains to the north

west, Lot 81 to the south east, Lot 213 to the south west and Lots 83 and 500

to the north west and south west. Site elevation ranges from approximately

55 mAHD in the site’s south west to 64 mAHD near the north eastern

boundary.

Current land use Rural residential.

Proposed land use Residential (low density).

Surrounding land uses Mixture of low density and rural residential.

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Geology and soil landscapes The Penrith 1:100,000 Geological Sheet 9030 (1991) identifies the site as being

underlain by Bringelly Shale, comprised of shale, carbonaceous claystone,

claystone, laminite, fine to medium-grained lithic sandstone, rare coal and

tuff.

The NSW Environment and Heritage eSPADE website identifies the site as

having soils of the Blacktown soil landscapes consisting of shallow to

moderately deep hardsetting mottled texture contrast soils, red and brown

podzolic soils on crests grading to yellow podzic soils on lower slopes and in

drainage lines.

Environmental receptors Dams are located on Lots 84, 213 and 500. The north western portion of the

site generally drains toward an unnamed tributary of Eastern Creek

(approximately 250m west), while the southern portion of the site generally

drains to another unnamed tributary of Eastern Creek (500 m south). Eastern

Creek drains into the Hawkesbury River (approximately 11 km north west).

Human receptors Existing surrounding rural residential and residential developments.

Future residents and site workers / builders.

2.2 Hydrogeology

Review of NSW Office of Water’s Real Time groundwater database

indicated no groundwater bores within 1.0 km of the site. Further

investigation would be required to characterise site hydrogeology.

On site geotechnical investigations to 3.1 mbgl did not encounter

groundwater (MA, 2015).

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3 Site Background Assessment

3.1 Historical Site Records Review

Development application and building plan summary of records kept

by Blacktown City Council were reviewed (Table 2) and provided in

Attachment D. The records indicate that various building applications

were made for construction of dwellings, sheds/garages, and additions.

Table 2: Site history information.

Lot ID Year Description

35 Boundary Road (Lot 83) 1978 BA for Pig Pens

1979 BA for Dwelling

1986 Awning

37 Boundary Road (Lot 84) 1973 BA for Poultry Shed

1977 BA for Dwelling

1983 BA for Garage Wall

29 Schofields Road (Lot 500) 1976 BA for Dwelling

1979 BA for Packing Shed

1995 BA for First Floor Additions

31 Schofields Road (Lot 213) 1966 BA for Dwelling

1966 BA for Additions

33 Schofields Road (Lot 81) 1985 BA for 2-Storey Dwelling

3.2 NSW OEH Records

No notices for the site or nearby surrounding areas under the

Contaminated Land Management Act (1997) or the Environmentally

Hazardous Chemicals Act (1985). No site within the suburb of Schofield

was listed on the register or identified on the list of NSW contaminated

sites notified to the EPA.

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3.3 Historical Aerial Photograph Analysis

Historical aerial photographs taken of the site during 1947, 1955, 1965,

1977, 1986, 1998, 2007 and 2014 were reviewed to investigate historic

site land uses (Table 3). Copies of aerial photographs are provided in

Attachment C.

Photos indicate that Lots 83 and 84 have been used for rural purposes

since at least 1947, with Lots 500, 213 and 81 developed for rural land

use by 1977. The southern portions of Lots 500, 213 and 81 were

acquired by BCC for road development in 2015.

Table 3: Historic aerial photograph observations 1947 – current.

Year Lot 81 Lot 83 Lot 84 Lot 500 Lot 213 Surrounding Land Use

1947 Lot is undeveloped

bushland.

Dwelling near north eastern

boundary, sheds in eastern

portion of lot. Western area

cleared for paddocks or

agricultural use.

Dwelling and sheds visible

in eastern portion of lot.

Orchards visible in western

area and near southern

boundary.

Lot is generally

undeveloped bushland

with clearing in north west.

Lot is undeveloped

bushland

Land use mainly rural

farmland to north and west.

Undeveloped bushland to

west, areas to south and

east partially cleared.

Orchards visible to north

and north west. Boundary

Road constructed to east,

Schofields Road to south,

and Schofields Farm Road

to west.

1955 Little change from 1947

photo.

Sheds near south eastern

boundary removed.

Market gardens visible in

western area.

Dam visible in north western

corner of lot and orchards

appear to be in decline.

Otherwise little change

from 1947 photo.

Dam and access track

constructed near north

western boundary,

otherwise little change from

1947 photo.

Little change from 1947

photo.

Additional rural farmland

development to north,

west, and east. Orchards

to north and north west no

longer visible, market

gardens visible to north

west and west. Some

clearing to east. Dams

visible to north and east.

1965 Growth of trees, otherwise

little change from 1955

photo.

Removal of some sheds,

others constructed in

eastern portion of lot.

South eastern area cleared

and market garden or

orchards visible in western

and southern areas.

Additional sheds

constructed, others

removed in eastern portion

of lot. Western area

possibly used for market

gardens rather than

orchards.

Growth of trees, otherwise


photo.

Growth of trees, otherwise


photo.

Surrounding rural, rural

residential and market

garden development.

Additional dams

constructed on surrounding

properties.

1977 (BCC

Maps

Online)

Lot has been cleared and

market gardens

established.

Additional sheds

constructed, others

removed in eastern area,

shed constructed in north

western portion of lot.

Sheds removed, large shed

constructed near southern

boundary. Dam in north

western corner enlarged

and sheds constructed to

east and south. Market

gardens and/or orchards

no longer visible.


market gardens

established. Dwelling


boundary. Dam enlarged

near north western

boundary, with sheds

constructed to southeast of

dam.


market gardens

established. Sheds


boundary. Dam and shed

constructed near northern

boundary.

Majority of surrounding

area cleared for rural land

use. Rural residential

development to south

west. Site surrounded by

market gardens except to

north west, west and south

west. Dwelling constructed

on recently Council

acquired land (2015) to

south of Lot 213.

Year Lot 81 Lot 83 Lot 84 Lot 500 Lot 213 Surrounding Land Use

1986 Little change from 1977

photo

Previous dwelling removed,

new dwelling constructed

in south eastern area of lot.

Sheds removed, others

constructed onsite.

Dwelling constructed near

south eastern boundary,


1977 photo.

Shed constructed to

northwest of dwelling.

Trees established near

western boundary.

Shed removed, additional

shed constructed to north

of dwelling, otherwise little

change from 1986 photo.

Surrounding additional

dwelling and shed

construction. Large sheds

constructed immediately

north of Lots 213 and 500.

Dwelling constructed on

recently Council acquired

land (2015) to south of Lot

81.

1998 Shed constructed near

south western boundary,


1986 photo.

Market gardens no longer

visible, otherwise little



photo.

Greenhouses or sheds

constructed in southern

portion of lot, otherwise


photo.


photo.

Rural and rural residential

development to north west

and west, otherwise little


2007

(Google

Earth

Maps)


photo.


photo.


photo.

Greenhouses/sheds no

longer visible, sheds

constructed to north and

north west of dwelling, and

in western area of lot.

Sheds constructed in south

east corner of lot, otherwise


photo.

Minor surrounding rural and

rural residential

development. Reduction

in market garden land use.

2015

(Nearmap)

Access road constructed

across central area of lot,


2007 photo.


photo.


photo.

Numerous stockpiles and/or

sheds visible in central area

of lot, market gardens no

longer visible in western

area of lot.


photo.

Clearing to west, north

west, north east and south,

and adjacent property to

east. Clearing of acquired

land to south for road

development. Residential

development to south.

Reduction in market

garden land use.

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Lots 83 and 84 DP2912, Lot 500 DP1195372, Lot 213 DP1189773 and Lot 81 DP 2912,


3.4 Walkover Site Inspection

Results of site walkover inspection on August 13, 2015 are summarised in

Table 4.

Table 4: Summary of site walkover.

Lot ID Lot Infrastructure Walkover Summary

35 Boundary Road

(Lot 83)

Brick and tile residential dwelling.

2 fibrous cement sheeting “fibro”

clad sheds with metal roofs.

6 metal sheds, 1 concrete block

shed.

Brick and tile residential dwelling in good condition near

south eastern boundary.

Fibro clad shed (PACM) with metal roof in reasonable

condition north west of dwelling, unable to access shed.

Fibro clad shed (PACM) with metal roof in poor condition,

north west of dwelling.

Metal shed in poor condition near north eastern boundary

used to store metals, plastic, fibrous cement sheeting

(PACM), and other refuse.

Metal sheds (3) to west of dwelling in poor condition,

formerly used as chicken coops, unable to access sheds.

Metal and timber shed near northern boundary in poor

condition, empty.

Metal shed in poor condition near western boundary, unable

to access shed.

Concrete block shed in poor condition near south western

boundary, unable to access shed.

Stockpiles to north west of dwelling, including metal, glass,

plastic, timber, containers, building and demolition materials,

fibrous cement sheeting (PACM), and general refuse.

Observed burnt area adjacent to stockpile (possible former

rubbish burning area), including broken pieces of fibrous

sheeting (PACM).

Stockpile of old TVs and general refuse adjacent to fence

near eastern boundary.

Concrete pad to north west of dwelling in poor condition

(possible former shed).

Extensive weeds and overgrown vegetation throughout the

site.

37 Boundary Road

(Lot 84)


Fibro clad dwelling with metal

roof.

3 metal sheds.

Brick and tile dwelling in south eastern corner, in good

condition. Fenced south eastern portion of lot, unable to

access area.

Fibrous cement clad dwelling with metal roof in reasonable

condition near eastern boundary.

Metal shed near southern boundary in reasonable condition

used for chicken farming. Unable to access shed.

Areas of fill to north and west of shed used for chicken

farming, used to create level pad for construction of shed,

unknown origin of fill.

Metal shed in north eastern area of lot, in poor condition,

with cracking and broken concrete floor, used for storage of

fuels, motor oil, machinery, plastics, metal, timber, containers

of unknown content, and general rubbish.

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Stockpile to east and south of shed, including metal, plastic,

concrete, building materials, and rusty and unused AST likely

formerly used for fuel storage.

Farm dam near north western boundary with embankments

(likely sourced from dam construction).

Metal shed in poor condition to east of dam, with concrete

floor in poor condition, containing pump, 44-gallon metal

drums likely used for fuel and oils, timber, metal

Stockpile to west of chicken shed, including timber, metals,

and general refuse.

Metal and timber shed in poor condition near south western

boundary, unable to access shed.

Concrete pad in poor condition near north eastern

boundary (likely former shed).

Lot primarily grassed paddock with extensive weeds and

overgrown vegetation.

29 Schofields

Road (Lot 500)


4 metal sheds.

Brick and tile dwelling in good condition near the southern

boundary.

Metal shed north of dwelling in poor condition used to store

machinery.

Farm dam near north western boundary with embankments

(likely sourced from dam construction).

Metal sheds (3) to south east of dam, in poor condition,

unable to gain access.

Stockpiles of soil of unknown origin near northern and central

areas of lot.

Stockpiles near northern boundary and central area of lot,

including builder’s and demolition waste, fuel/motor oil

containers, containers and drums of unknown content,

metal, timber, plastic, glass, bricks, tiles, old vehicles, tyres,

household items, metal skip bins, fibrous cement sheeting

(PACM), and general refuse.

Old and unused vehicles in central eastern area of lot.

Former orchard and market gardens on eastern portion of

site, currently overgrown with extensive weeds and

vegetation.

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31 Schofields

Road (Lot 213)

2 metal sheds. Metal shed in south east corner of lot in poor condition,

unable to access shed.

Stockpiles to north, west and south of metal shed, including

metal, timber, concrete, plastic, glass, wire, drums and

containers, household items, pipe, timber and wire pallets,

and general refuse.

Farm dam near northern boundary with embankments (likely

sourced from dam construction).

Metal shed to south of dam in poor condition, containing

pump, drums and containers, timber, metal, plastic, and

general refuse.

Majority of lot used for market gardens, some areas

overgrown with weeds and other vegetation.

33 Schofields

Road (Lot 81)

Metal shed. Metal shed in poor condition near south western boundary,

unable to access shed.

Stockpiles near south central area of lot, including old

vehicle, metal, timber, pipes, containers, fibrous cement

sheeting (PACM), and general refuse.

Stockpiles near south western area of lot containing metal,

timber, plastic, pipe, bricks, fibrous cement sheeting (PACM),

household items, and general refuse.

Stockpile near western boundary, including timber, metal,

plastic and general refuse.

Possible asbestos pipe near southern boundary.

Majority of lot formerly used for market gardens, currently

extensive weeds and overgrown vegetation throughout the

site.

Access road across the central area of the site for

development on neighbouring property to east.

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4 Areas of Environmental Concern/Contaminants of

Primary Concern

Our assessment of site AECs and COPCs (Table 5) is made on the basis

of available site history, aerial photograph interpretation and site

walkovers. Maps showing locations of identified AECs is provided in

Figures 2-6 (Attachment B).

Table 5: Areas of environmental concern and contaminants of primary concern.

AEC ¹ Potential for Contamination COPC Contamination

Likelihood

A - Dwellings Pesticides and heavy metals may

have been used underneath

dwellings for pest control. Dwelling

construction may include ACM

and/or lead based paints.

HM, OCP/OPP and

asbestos.

Medium - high

B – Sheds – (likely used as

workshop areas, and

storage of miscellaneous

items). Unable to gain

access to some sheds.

Sheds may currently (or have

previously) stored fuel, oils, asbestos

sheeting (PACM), pesticides and/or

been treated with heavy metals and

pesticides (pest control). Shed

construction may include ACM

and/or lead based paints.

HM, TRH, BTEX, PAH,

OCP/OPP and asbestos.

Medium - high

C – Portions of site, former

market garden or orchard

use

Application of agricultural chemicals,

use of pesticides and heavy metals

for pest control during site use as

market gardens or orchards.

HM and OCP/OPP. Medium

D - Possible filling Fill material of unknown origin and

quality.

HM, TRH, BTEX, PAH,


Medium

E - Containers of unknown

content, including AST

Potentially contaminating chemicals

may have spilled or leaked onto

underlying soil.

HM, TRH, BTEX, PAH and

OCP/OPP.

Medium - high

F - Stockpiles Contaminants from unknown

contents of stockpiles and general

refuse may have spilled or leaked

onto underlying soil. Burnt area

observed on Lot 83 adjacent to

stockpile.

HM, TRH, BTEX, PAH and


Medium - high

G - Dams Contaminants may have washed

into and accumulated in dams.

HM and OCP/OPP. Low

H - Broken fibrous cement

sheeting and pipes

(PACM).

Potential ACM material observed. Asbestos. Medium - high

I - Old vehicles and

batteries observed on Lots

500 and 81.

Fuel, oil or battery acid containing

lead from old vehicles may have

contaminated soil.

HM, TRH, PAH and BTEX. Low

Notes

¹ Locations identified on AEC maps in Attachment B.

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5 Conclusions and Recommendations

5.1 Conclusions

The results of the site history and walkover inspection indicates that Lots

83 and 84 have been used for rural purposes since at least 1947, with

Lots 500, 213 and 81 developed for rural land use by 1977. The site has

the following potential contamination sources:

o Past dwelling construction and maintenance have the potential

to have introduced contaminants in the form of asbestos (as a

construction material), pesticides (pest control) and heavy

metals (paints, pest control).

o Sheds may currently or previously have stored fuel, oils or other

chemicals, leading to hydrocarbon contamination. Lead based

paints or PACM (fibrous cement sheeting containing asbestos)

may have been used during construction. The sheds may have

been treated with pesticides and heavy metals for pest control.

o Localised fill importation may have occurred near shed on Lot 84

and within soil stockpiles on Lot 500, potentially introducing

heavy metals, hydrocarbons and asbestos.

o An AST was observed on Lot 84, and drums and containers of

unknown content were observed across the site which may

have leaked or been spilled introducing contaminants to the site

soils such as heavy metals, hydrocarbons and OCP/OPP.

o Fibrous cement sheeting (PACM) fragments were observed

across the site and could contain asbestos.

o Stockpiles may have introduced heavy metals, hydrocarbons,


o Former market garden and orchard use across the site may have

introduced heavy metals or pesticides into the soil.

o Fuel, oil or battery acid from old vehicles may have introduced

contaminants to the soil such as heavy metals and

hydrocarbons.

o Farm dams may have accumulated contaminants.

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5.2 Recommendations

To address potential AECs, a detailed site investigation (DSI) including

intrusive soil sampling is recommended. Testing is recommended to

address all AECs. Testing under all dwelling and shed footprints (plus 1

m curtilage) is recommended following their demolition to determine

any residual impacts from previous use. A walkover inspection of

remaining site should be conducted following removal of refuse to

assess any potential residual impacts.

The fibro dwellings and sheds on Lots 83 and 84 to undergo a hazardous

materials assessment by appropriately qualified contractor pre

demolition to determine if asbestos or other hazardous material is

present. Where hazardous materials are identified, the material is to be

removed and disposed of by an appropriately qualified contractor

under current controls.

The DSI plan is to be developed in accordance with NSW EPA (1995)

Sampling Design Guidelines and a risk based assessment. Assessment

shall address each of the identified AECs and assess COPC identified

for each AEC (Table 5). Results of the site testing shall be assessed

against site acceptance criteria (SAC) developed with reference to

ASC NEPM (1999, amended 2013).

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6 Limitations Statement

The preliminary site investigation was undertaken in line with current

industry standards.

It is important, however, to note that no land contamination study can

be considered to be a complete and exhaustive characterisation of a

site nor can it be guaranteed that any assessment shall identify and

characterise all areas of potential contamination or all past potentially

contaminating land-uses. This is particularly the case on sites where full

access is not possible due to the presence of structures (dwellings and

sheds), and where additional assessment work is identified as being

required. Therefore, this report should not be read as a guarantee that

no contamination shall be found on the site. Should material be

exposed in future which appears to be contaminated or inconsistent

with natural site soils, additional testing may be required to determine

the implications for the site.

Martens & Associates Pty Ltd has undertaken this assessment for the

purposes of the current development proposal. No reliance on this

report should be made for any other investigation or proposal. Martens

& Associates accepts no responsibility, and provides no guarantee

regarding the characteristics of areas of the site not specifically studied

in this investigation.

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7 References

Department of Lands – Map sales. Aerial photographs (1947, 1955,

1965, 1986, 1998).

Google Maps (2003).

Blacktown City Council – DA/BA/CC records (2015).

Blacktown City Council – Online Maps (1977).

Google Earth Maps (2007).

Martens (2015) Preliminary Salinity and Geotechnical Assessment: 27

and 37 Boundary Road and 29, 31 and 33 Schofields Road,

Schofields, NSW. P1504907JR02V01.

Nearmap (2015).

NEPC (1999, amended 2013) National Environmental Protection

(Assessment of Site Contamination) Measure (ASC NEPM,1999

amended 2013).).

NSW DEC (2006) 2nd Ed. Contaminated Sites: Guidelines for the NSW

Site Auditor Scheme.

NSW Department of Environment & Heritage (eSPADE, NSW soil and

land information), www.environment.nsw.gov.au.

NSW Department of Mineral Resources, (1991) Penrith 1:100,000

Geological Sheet 9030.

NSW DPI Office of Water, Real Time data, Groundwater database,

accessed August 13, 2015.

http://allwaterdata.water.nsw.gov.au/water.stm

NSW EPA (1995) Sampling Design Guidelines.

NSW OEH (2011) Contaminated Sites: Guidelines for Consultants

Reporting on Contaminated Sites, 2nd Edition.

SIX Viewer, LPI (2015).

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8 Attachment A – Site Plan

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Not to Scale Job No: P1504907

Environment | Water | Wastewater | Geotechnical | Civil | Management Martens & Associates Pty Ltd ABN 85 070 240 890

FIGURE 1

Drawing No:

Site Location

35 and 37 Boundary Road, and 29, 31 and 33 Schofields

Road, Schofields NSW

Source: Nearmap, 2015 (top) and

NSW SIX Viewer, 2015 (bottom)

Site boundary 37 Boundary Road (Lot 84)

35 Boundary Road (Lot 83)

29 Schofields Road (Lot 500) 31 Schofields Road (Lot 213)

33 Schofields Road (Lot 81)

Site boundary

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9 Attachment B – AEC Locations

Key

Site boundary AEC A – Dwelling

AEC B – Sheds AEC C – Former market garden

AEC E – Containers, AEC F – Stockpiles (including observed burnt area), and

AEC H –PACM

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FIGURE 2

Drawing No:

AEC Locations

Lot 83 DP 2912, 35 Boundary Road, Schofields, NSW

Source: Nearmap, 2015


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FIGURE 3

Drawing No:

AEC Locations

Lot 84 DP 2912, 37 Boundary Road, Schofields, NSW


Key


AEC B – Sheds AEC C – Former market garden and orchard

AEC D – Possible filling

AEC E – Containers and AST, AEC F – Stockpiles, and AEC H – PACM

AEC G - Dam


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FIGURE 4

Drawing No:

AEC Locations

Lot 500 DP 1195372, 29 Schofields Road, Schofields, NSW Source: Nearmap, 2015

Key


AEC B – Sheds AEC C – Former market garden and orchard

AEC D – Possible filling

AEC E – Containers, AEC F – Stockpiles, and AEC H – PACM

AEC G – Dam AEC I – Old vehicles


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FIGURE 5

Drawing No:

AEC Locations

Lot 213 DP 1189773, 31 Schofields Road, Schofields, NSW Source: Nearmap, 2015

Key

Site boundary AEC B – Sheds

AEC C – Former market garden


AEC G - Dam

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Key

Site boundary AEC B - Sheds

AEC C – Former market garden


AEC I – Old vehicles


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FIGURE 6

Drawing No:

AEC Locations

Lot 81 DP 2912, 33 Schofields Road, Schofields, NSW


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10 Attachment C – Historical Aerial Photographs

Approximate site boundary

Lot 84

Lot 83

Lot 81

Lot 213

Lot 500

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Figure 7

Drawing No:

1947 Aerial

Source: NSW Department Lands


Lot 84

Lot 83

Lot 81

Lot 213

Lot 500

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Figure 8

Drawing No:

1955 Aerial Source: NSW Department Lands

Approximate site boundary m

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Figure 9

Drawing No:

1965 Aerial


Lot 84

Lot 83

Lot 81

Lot 500

Lot 213

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Figure 10

Drawing No:

1977 Aerial

Source: Blacktown City Council, Online Maps (2015)

Lot 84

Lot 83

Lot 81

Lot 500

Lot 213


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Figure 11

Drawing No:

1986 Aerial


Lot 84

Lot 83

Lot 81

Lot 213

Lot 500


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Figure 12

Drawing No:

1998 Aerial


Lot 84

Lot 83

Lot 81

Lot 500

Lot 213


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Figure 13

Drawing No:

2007 Aerial

Source: Google Earth Maps (2015)

Lot 84

Lot 83

Lot 81

Lot 500

Lot 213


Lot 84

Lot 83

Lot 81

Lot 500

Lot 213

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Figure 14

Drawing No:

2015 Aerial

Source: Nearmap (2015)

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Page 39

11 Attachment D – Blacktown City Council DA/BA/CC

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