dam water and sediment assessment - city of blacktown · 2019. 8. 14. · (lor), but below the...

The business of sustainability

Dam Water and Sediment Assessment

14 Clarke Street, Riverstone NSW 2765

Elite International Investments Pty Ltd

Report Date: 5/06/2018

Project No.: 0462359

S008547

24 November 2017


Document control number: S008547

0462359_S008547_Dam Water and Sediment Assessment_14 Clarke St Riverstone_R1.docx


i

Project name:

Dam Water and Sediment Assessment


Prepared for: Elite International Investments Pty Ltd

© Copyright 2018 by ERM Worldwide Group Ltd and / or its affiliates (“ERM”).

All rights reserved. No part of this work may be reproduced or transmitted in any form,

or by any means, without the prior written permission of ERM

Document history

ERM approval to issue

Version Revision Author Reviewed by Name Date Comments

V1.0 R01 Russell

Jarman





ii

Table of contents

1 Introduction ................................................................................................... 1

1.1 General ........................................................................................................................... 1

1.2 Objective ......................................................................................................................... 1

1.3 Site Features .................................................................................................................. 1

2 Site Assessment ........................................................................................... 2

2.1 Overview ......................................................................................................................... 2

2.2 Site Assessment Criteria ................................................................................................ 2

2.2.1 Dam Water .............................................................................................................. 2

2.2.2 Sediment ................................................................................................................. 3

2.3 Sampling Strategy .......................................................................................................... 3

3 Water Quality Assessment ............................................................................ 4

4 Sediment Assessment .................................................................................. 6

4.1 Total Recoverable Hydrocarbons and Monocyclic Aromatic Hydrocarbons .................. 6

4.2 Polycyclic Aromatic Hydrocarbons ................................................................................. 6

4.3 Pesticides and Polychlorinated Biphenyls ...................................................................... 6

4.4 Heavy Metals .................................................................................................................. 6

4.5 Faecal Coliforms ............................................................................................................. 7

5 Recommendations ........................................................................................ 8

5.1 Dam Water ..................................................................................................................... 8

5.2 Sediments ....................................................................................................................... 8

6 Conclusion .................................................................................................... 9

List of Figures

Figure 1: Site Location

Figure 2: Site Layout

Appendices

Appendix A: Laboratory Results

Appendix B: Dam Decommissioning Work Method Procedure





1

1 Introduction

1.1 General

ERM Services Australia Pty Ltd (ERM) was commissioned by Elite International Investments

Pty Ltd to conduct a water and sediment quality assessment of a water storage dam within

the property located at 14 Clarke Street, Riverstone NSW, and identified as Lot 1 Deposited

Plan 30211 (the site).

Refer to Figure 1 – Site Location.

1.2 Objective

The objective of this report is to assess the suitability of the dam water for future discharge,

and the suitability of dam sediments to be retained or beneficially reused on-site under the

proposed future land use.

In particular, the assessment has been designed to assist with the dewatering and

decommissioning of the dam in an environmentally sensitive manner without unacceptable

risk to human health or the environment.

1.3 Site Features

The Site is located along Riverstone road via unsealed tracks to the north. The Site appears

to have previously been utilised for cattle grazing however at the time of inspection appeared

disused. The Site ranges from 55m elevation to the south east sloping to 42m to the north

west.

For the purpose of this report, the dam subject to assessment is identified as ‘Dam A’.

Dam A is roughly oval in shape and situated within the northern part of the site, fronting

Riverstone Road.

Dam A is approximately 760 m2 in size with a capacity of approximately 2,000 m3, which is

equivalent to 2 ML of water.

Water within the dam appears to be sourced from localised site runoff from the surrounding

land and is a constructed dam, with surplus water flowing to the north west toward Riverstone

road.





2

2 Site Assessment

2.1 Overview

The site is planned for a residential subdivision. To facilitate this the existing dam on the Site

is required to be decommissioned.

Sampling and laboratory analysis of water contained within Dam A was requested by the

Client to identify the most appropriate discharge method that will not adversely impact the

receiving environment or nearby water bodies.

Sampling and laboratory analysis of sediment within the base of Dam A was requested by the

Client to assess the suitability of the material for beneficial on-site reuse or to facilitate

appropriate off-site disposal.

Dam A was initially assessed by DLA Environmental Services on 8 June 2017 (Report

DL4140_S007004 issued July 2017). A follow up assessment was conducted by ERM

Services Australia (Formally DLA) on the 22 May 2018 to assess the validity of the previous

recommendations.

2.2 Site Assessment Criteria

2.2.1 Dam Water No stormwater system or creeks were observed in the immediate vicinity of the site to

facilitate discharge of dam water. The closest receiving waters to the site is First Ponds

Creek which is located approximately 150 m to the west.

Based on this, application of the water directly to the site is expected to be the most practical

method of dewatering. As such, water quality results have been compared against the

following:

stormwater reuse criteria (NSW DEC, 2006);

irrigation trigger values (ANZECC, 2000);

recreational secondary contact trigger values (ANZECC, 2000); and

aquatic ecosystem trigger values, specifically the freshwater 95% Trigger Values

(ANZECC, 2000).

These criteria have been adopted in order to minimise the likelihood for dewatering activities

to pollute receiving waters which would constitute an offence under the Protection of the

Environment Operations Act NSW 1997 (NSW). An assessment of the Site groundwater

conditions was beyond the scope of this report. Given the minimal duration of the dewatering

activity it is expected to have minimal impact on surrounding groundwater conditions.





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2.2.2 Sediment Sediment assessment is required to demonstrate the sediments to be excavated from the

base of the dam meet the land use suitability criteria adopted for the site. The intended reuse

of the sediments will be as soil during the site redevelopment works.

Given the reuse of the sediments as soils that are intended redevelopment of the site for low

density residential purposes, chemical laboratory results have been compared against the

health investigation and screening levels applicable to Residential A – Residential with

Garden / Accessible soils (NEPC, 2013).

Microbiological data has been obtained from Environmental Guidelines: Use and Disposal of

Biosolid Products (NSW EPA, 1997).

2.3 Sampling Strategy

Two water samples were collected from two sampling events from the dam using a

decontaminated HDPE 0.5L beaker attached to an extendable aluminium pole. A sampling

density of two samples was selected based on field observations and dam size, with the two

sampling events addressing any potential changes within the dam due to the report being 12

months since the sampling event. The samples were immediately transferred to laboratory

prepared and supplied glass and plastic bottles with appropriate preservation.

Sediment samples were collected from the edge of the dam using a decontaminated trowel.

The samples were immediately transferred to laboratory prepared and supplied glass jars

fitted with Teflon-lined caps.

Job number; sample identification number; sampler’s initials and date of sampling were

recorded on sample labels affixed to the sample containers.

All samples were placed into a chilled cooler to minimise the likelihood for the loss of potential

volatile components during storage and transport. The samples were transported under

standard ERM chain-of-custody protocols to the NATA accredited laboratory – Envirolab

Services Pty Ltd. All samples were stored and transported at temperatures below 4°C.





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3 Water Quality Assessment

The dam was visually inspected and sampled on the 8 June 2017 and 22 May 2018. During

both sampling events the water was observed to be free of scums, odours and films.

The results of the laboratory analysis are summarised in Table 1.

Table 1 – Water Quality Results (µg/L)

SAMPLE ID W5 W6 W1 W2 RE-USE CRITERIA

DISCHARGE CRITERIA

SAMPLE DATE 8 June 2017 22 May 2018

pH 7.4 6.7 7.0 7.1 6.5 – 8.5 6.5 – 8.5

Electrical

Conductivity

(µS/cm)

100 100 220 210 1,000 1,000

TSS (mg/l) - 54 16 58 50a 40b

BOD <5 - 26 66 -- <15b

OC Pesticides <0.1 <0.1 <0.2 <0.2 -- --

OP Pesticides <0.1 <0.1 <0.2 <0.2 -- --

Arsenic 1 1 <1 1 -- 13

Cadmium <0.1 <0.1 <0.1 <0.1 -- 0.2

Chromium 2 1 <1 <1 -- 1

Copper 3 3 <1 <1 -- 1.4

Lead <1 <1 <1 <1 -- 3.4

Mercury <0.05 <0.05 <0.05 <0.05 -- 0.6

Nickel 1 1 <1 <1 -- 11

Zinc 9 10 1 4 -- 8

Faecal Coliform

(MPN/100mL) 2400 2200 230 230 1,000 1,000

a: based on concentrations that may result in blockages or operational issues in irrigation sprays.

b: Protection of aquaculture species (ANZECC, 2000).

Bold denotes exceedance of reuse or discharge criteria.

The results of the laboratory analysis of dam water samples indicate the following:





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The pH of water dam is within the parameters adopted as acceptable for reuse and

discharge;

The Electrical Conductivity (EC) of the dam water is less than the criteria for reuse;

Total Suspended Solids (TSS) concentrations within samples collected during both

rounds of sampling exceed both the reuse and discharge criteria;

Biological Oxygen Demand (BOD) concentrations within samples collected during the

most recent round of sampling exceed the discharge criteria;

Heavy metal concentrations within samples collected during the initial round of samples

exceeded the discharge criteria for chromium and zinc, however the concentrations

reported within samples collected during the most recent round of sampling are below

the discharge criteria; and

Faecal coliform concentrations collected during the initial round of samples exceeded

the reuse and discharge criteria, however the concentrations reported within samples

collected during the most recent round of sampling are below the reuse and discharge

criteria.

Refer to Appendix A – NATA Certified Analytical Data.





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4 Sediment Assessment

Sediment samples were collected from Dam A on 8 June 2017 and 22 May 2018. The results

of the laboratory analysis are summarised below.

Refer to Appendix A – NATA Certified Analytical Data.

4.1 Total Recoverable Hydrocarbons and Monocyclic Aromatic Hydrocarbons

Sediment samples collected during the initial and current round of sampling reported Total

Recoverable Hydrocarbons (TRH) at concentrations above the laboratory limit of reporting

(LOR), but below the adopted assessment criteria.

Sediment samples collected during the initial and current round of sampling reported

benzene, toluene, ethylbenzene and xylene (BTEX) at concentrations below the laboratory

LOR.

4.2 Polycyclic Aromatic Hydrocarbons


Polycyclic Aromatic Hydrocarbons (PAH) at concentrations below the laboratory LOR.

4.3 Pesticides and Polychlorinated Biphenyls


Organochlorine and Organophosphorus Pesticides (OC/OP) and Polychlorinated Biphenyls

(PCB) at concentrations below the laboratory LOR.

4.4 Heavy Metals

Sediment samples collected during the initial and current round of sampling reported heavy

metals adopted assessment criteria as summarised in Table 2.

Table 2 – Heavy Metals in Sediment (mg/kg)

Sample As Cd Cr Cu Pb Hg Ni Zn

SED5 15 <0.4 21 24 19 <0.1 9 52

SED6 11 <0.4 16 21 16 <0.1 6 39

Sed-1 15 <0.4 20 20 25 <0.1 8 72

Sed-2 16 <0.4 21 15 24 <0.1 9 59

Criteria 100 20 100 30,000 1,200 120 1,200 60,000





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4.5 Faecal Coliforms

Sediment samples collected during the current round of sampling reported faecal coliforms at

concentrations of 4,900 MPN/100g in sample Sed-1 and 35,000 MPN/100g in sample Sed-2

which are below the adopted assessment criteria of 1,000 MPN/g.





8

5 Recommendations

5.1 Dam Water

Given the absence of a nearby stormwater system or waterway, application of dam water

directly to the surface of the site considered the most practical method of dewatering. As

such, assessment of nutrient concentrations within the dam water was not considered

necessary for discharge purposes. Further, given that dewatering will be carried out on a

short term basis and application is not intended to facilitate crop production, there are no

concerns for bio-logging of the pumping equipment or nutrient loading.

The results of the laboratory analysis from the current round of water sampling reported

elevated concentrations of both TSS and BOD. Given that the dam water is understood to be

sourced from run-off from site environments, and is not designated for off-site discharge to

surface receiving waters, the elevated concentrations are not considered to preclude the

suitably of the water for application directly to the surface of the site. Faecal coliforms were

initially reported above the nominated criteria however the most recent round of sampling

noted the concentrations were compliant with the reuse criteria. As such the water is

nominated to be applied to land without further validation.

The water should, however, be applied in a controlled manner so as not to cause off-site

runoff or unacceptable risk of exposure to receptors. The irrigation area should also be

assessed for moisture content at the completion of irrigation to ensure the soils are UV

sterilised prior to future land use.

5.2 Sediments

The results of the laboratory analysis from the current round of sediment sampling reported

contaminant concentrations below the adopted assessment criteria for land use consistent

with the definition of ‘Residential A’ (NEPC, 2013). As such, the sediments are considered

suitable for beneficial on-site reuse from a contamination perspective.





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6 Conclusion

Following assessment of the dam water and sediments, ERM consider that the dam water is

suitable for direct application to the surface of the site in a controlled manner so as not to

cause off-site runoff or unacceptable risk of exposure to receptors. The irrigation area should

also be assessed for moisture content at the completion of irrigation to ensure the soils are

UV sterilised prior to future land use.

Given that assessment of nutrient concentrations has not been carried out to date, the dam

water is not currently considered suitable for discharge to stormwater or offsite overland flow

environments.

Similarly, the sediments within the base of the dam are considered suitable for beneficial on-

site reuse from a contamination perspective.

Decommissioning of the dam should be undertaken in accordance with Appendix B – Dam

Decommissioning Work Method Procedure.





10

Figure 1

Site Location

Figure 1. Site Loca�onTitle

Site Address Figure No Date

Scale Compiled Revision

Version 1.0

22.05.2018

As Shown RJ

1

Approximate Scale

0m 100m 200m

Legend

Site Boundary

Project No.

0462359

DiversiClient

14 Clarke St, Riverstone, NSW

Locality Map





11

Figure 2

Site Layout

Site Layout & Dam Loca�on Figure Title

Client

Figure No.Date Scale Revision

Version 1.022/5/2017 As Shown 2

Diversi Consul�ng Pty Ltd

Approximate Scale

0m 50m 100m

Legend

Dam Loca�on

Project No.

0462359

Project Title

14 Clarke Street, Riverstone, NSW

Compiled

RJ

Site Boundary

Dam A

Sample ID

W1/SED1

W2/SED2

Proposed Irriga�on Areas





12

Appendix A

NATA Accredited Laboratory Reports

CERTIFICATE OF ANALYSIS 169056

Client:

DLA Environmental Services Pty Ltd

Unit 3, 38 Leighton Pl

Hornsby

NSW 2077

Attention: Josh Crawford

Sample log in details:

Your Reference: DL4140, Diversi - Riverstone

No. of samples: 6 waters, 6 sediments

Date samples received / completed instructions received 13/06/17 / 13/06/17

Analysis Details:

Please refer to the following pages for results, methodology summary and quality control data.

Samples were analysed as received from the client. Results relate specifically to the samples as received.

Results are reported on a dry weight basis for solids and on an as received basis for other matrices.

Please refer to the last page of this report for any comments relating to the results.

Report Details:

Date results requested by: / Issue Date: 20/06/17 / 19/06/17

Date of Preliminary Report: Not Issued

NATA accreditation number 2901. This document shall not be reproduced except in full.

Accredited for compliance with ISO/IEC 17025 - Testing Tests not covered by NATA are denoted with *.

Results Approved By:

Page 1 of 28Envirolab Reference: 169056

Revision No: R 00

Client Reference: DL4140, Diversi - Riverstone

OCP in water

Our Reference: UNITS 169056-2 169056-4 169056-6

Your Reference ------------

-

W2 W4 W6

Date Sampled ------------ 13/06/2017 13/06/2017 13/06/2017

Type of sample Water Water Water

Date extracted - 14/06/2017 14/06/2017 14/06/2017

Date analysed - 14/06/2017 14/06/2017 14/06/2017

HCB µg/L <0.2 <0.2 <0.2

alpha-BHC µg/L <0.2 <0.2 <0.2

gamma-BHC µg/L <0.2 <0.2 <0.2

beta-BHC µg/L <0.2 <0.2 <0.2

Heptachlor µg/L <0.2 <0.2 <0.2

delta-BHC µg/L <0.2 <0.2 <0.2

Aldrin µg/L <0.2 <0.2 <0.2

Heptachlor Epoxide µg/L <0.2 <0.2 <0.2

gamma-Chlordane µg/L <0.2 <0.2 <0.2

alpha-Chlordane µg/L <0.2 <0.2 <0.2

Endosulfan I µg/L <0.2 <0.2 <0.2

pp-DDE µg/L <0.2 <0.2 <0.2

Dieldrin µg/L <0.2 <0.2 <0.2

Endrin µg/L <0.2 <0.2 <0.2

pp-DDD µg/L <0.2 <0.2 <0.2

Endosulfan II µg/L <0.2 <0.2 <0.2

pp-DDT µg/L <0.2 <0.2 <0.2

Endrin Aldehyde µg/L <0.2 <0.2 <0.2

Endosulfan Sulphate µg/L <0.2 <0.2 <0.2

Methoxychlor µg/L <0.2 <0.2 <0.2

Surrogate TCMX % 79 82 89


Revision No: R 00


OP Pesticides in water



-

W2 W4 W6

Date Sampled ------------ 13/06/2017 13/06/2017 13/06/2017

Type of sample Water Water Water

Date extracted - 14/06/2017 14/06/2017 14/06/2017

Date analysed - 14/06/2017 14/06/2017 14/06/2017

Azinphos-methyl (Guthion) µg/L <0.2 <0.2 <0.2

Bromophos ethyl µg/L <0.2 <0.2 <0.2

Chlorpyriphos µg/L <0.2 <0.2 <0.2

Chlorpyriphos-methyl µg/L <0.2 <0.2 <0.2

Diazinon µg/L <0.2 <0.2 <0.2

Dichlorovos µg/L <0.2 <0.2 <0.2

Dimethoate µg/L <0.2 <0.2 <0.2

Ethion µg/L <0.2 <0.2 <0.2

Fenitrothion µg/L <0.2 <0.2 <0.2

Malathion µg/L <0.2 <0.2 <0.2

Parathion µg/L <0.2 <0.2 <0.2

Ronnel µg/L <0.2 <0.2 <0.2



Revision No: R 00


HM in water - dissolved

Our Reference: UNITS 169056-1 169056-2 169056-3 169056-4 169056-5


-

W1 W2 W3 W4 W5

Date Sampled ------------ 13/06/2017 13/06/2017 13/06/2017 13/06/2017 13/06/2017

Type of sample Water Water Water Water Water

Date prepared - 15/06/2017 15/06/2017 15/06/2017 15/06/2017 15/06/2017

Date analysed - 15/06/2017 15/06/2017 15/06/2017 15/06/2017 15/06/2017

Arsenic-Dissolved µg/L <1 <1 1 1 1

Cadmium-Dissolved µg/L <0.1 <0.1 <0.1 <0.1 <0.1

Chromium-Dissolved µg/L 2 1 1 <1 2

Copper-Dissolved µg/L 3 3 3 3 4

Lead-Dissolved µg/L <1 <1 <1 <1 <1

Mercury-Dissolved µg/L <0.05 <0.05 <0.05 <0.05 <0.05

Nickel-Dissolved µg/L 1 1 1 1 1

Zinc-Dissolved µg/L 10 11 3 3 9

HM in water - dissolved

Our Reference: UNITS 169056-6


-

W6

Date Sampled ------------ 13/06/2017

Type of sample Water

Date prepared - 15/06/2017

Date analysed - 15/06/2017

Arsenic-Dissolved µg/L 1

Cadmium-Dissolved µg/L <0.1

Chromium-Dissolved µg/L 1

Copper-Dissolved µg/L 4

Lead-Dissolved µg/L <1

Mercury-Dissolved µg/L <0.05

Nickel-Dissolved µg/L 1

Zinc-Dissolved µg/L 10


Revision No: R 00


Miscellaneous Inorganics



-

W1 W2 W3 W4 W5

Date Sampled ------------ 13/06/2017 13/06/2017 13/06/2017 13/06/2017 13/06/2017


Date prepared - 13/06/2017 13/06/2017 13/06/2017 13/06/2017 13/06/2017

Date analysed - 13/06/2017 13/06/2017 13/06/2017 13/06/2017 13/06/2017

pH pH Units 7.6 7.4 7.4 7.4 7.4

Electrical Conductivity µS/cm 64 63 1,000 990 100

BOD mg/L <5 [NA] <5 [NA] <5

Total Suspended Solids mg/L [NA] 35 [NA] 140 [NA]




-

W6

Date Sampled ------------ 13/06/2017

Type of sample Water



pH pH Units 6.7

Electrical Conductivity µS/cm 100

Total Suspended Solids mg/L 54


Revision No: R 00


Microbiologocal Testing



-

W1 W3 W4 W5 W6

Date Sampled ------------ 13/06/2017 13/06/2017 13/06/2017 13/06/2017 13/06/2017


Date of testing - 14/06/2017 14/06/2017 14/06/2017 14/06/2017 14/06/2017

Faecal Coliforms MPN/100

mL

2,400 5,400 9,200 2,400 2,200


Revision No: R 00


vTRH(C6-C10)/BTEXN in Soil



-

SED1 SED2 SED3 SED4 SED5

Date Sampled ------------ 13/06/2017 13/06/2017 13/06/2017 13/06/2017 13/06/2017

Type of sample Sediment Sediment Sediment Sediment Sediment

Date extracted - 14/06/2017 14/06/2017 14/06/2017 14/06/2017 14/06/2017

Date analysed - 14/06/2017 14/06/2017 14/06/2017 14/06/2017 14/06/2017

TRH C6 - C9 mg/kg <25 <25 <25 <25 <25

TRH C6 - C10 mg/kg <25 <25 <25 <25 <25

vTPH C6 - C10 less BTEX

(F1)

mg/kg <25 <25 <25 <25 <25

Benzene mg/kg <0.2 <0.2 <0.2 <0.2 <0.2

Toluene mg/kg <0.5 <0.5 <0.5 <0.5 <0.5

Ethylbenzene mg/kg <1 <1 <1 <1 <1

m+p-xylene mg/kg <2 <2 <2 <2 <2

o-Xylene mg/kg <1 <1 <1 <1 <1

Total +ve Xylenes mg/kg <1 <1 <1 <1 <1

naphthalene mg/kg <1 <1 <1 <1 <1

Surrogate aaa-Trifluorotoluene % 75 76 72 73 79




-

SED6

Date Sampled ------------ 13/06/2017

Type of sample Sediment

Date extracted - 14/06/2017


TRH C6 - C9 mg/kg <25

TRH C6 - C10 mg/kg <25

vTPH C6 - C10 less BTEX

(F1)

mg/kg <25

Benzene mg/kg <0.2

Toluene mg/kg <0.5

Ethylbenzene mg/kg <1

m+p-xylene mg/kg <2

o-Xylene mg/kg <1

Total +ve Xylenes mg/kg <1

naphthalene mg/kg <1

Surrogate aaa-Trifluorotoluene % 76


Revision No: R 00


svTRH (C10-C40) in Soil



-


Date Sampled ------------ 13/06/2017 13/06/2017 13/06/2017 13/06/2017 13/06/2017


Date extracted - 14/06/2017 14/06/2017 14/06/2017 14/06/2017 14/06/2017

Date analysed - 14/06/2017 14/06/2017 14/06/2017 14/06/2017 14/06/2017

TRH C10 - C14 mg/kg <50 <50 <50 <50 <50

TRH C15 - C28 mg/kg <100 <100 <100 <100 <100

TRH C29 - C36 mg/kg <100 <100 <100 <100 <100

TRH >C10-C16 mg/kg <50 <50 <50 <50 <50

TRH >C10 - C16 less

Naphthalene (F2)

mg/kg <50 <50 <50 <50 <50

TRH >C16-C34 mg/kg <100 <100 <100 <100 <100

TRH >C34-C40 mg/kg <100 <100 <100 <100 <100

Total +ve TRH (>C10-C40) mg/kg <50 <50 <50 <50 <50

Surrogate o-Terphenyl % 95 95 94 95 95




-

SED6

Date Sampled ------------ 13/06/2017




TRH C10 - C14 mg/kg <50

TRH C15 - C28 mg/kg <100

TRH C29 - C36 mg/kg <100

TRH >C10-C16 mg/kg <50

TRH >C10 - C16 less

Naphthalene (F2)

mg/kg <50

TRH >C16-C34 mg/kg <100

TRH >C34-C40 mg/kg <100

Total +ve TRH (>C10-C40) mg/kg <50

Surrogate o-Terphenyl % 94


Revision No: R 00


PAHs in Soil



-


Date Sampled ------------ 13/06/2017 13/06/2017 13/06/2017 13/06/2017 13/06/2017


Date extracted - 14/06/2017 14/06/2017 14/06/2017 14/06/2017 14/06/2017

Date analysed - 15/06/2017 15/06/2017 15/06/2017 15/06/2017 15/06/2017

Naphthalene mg/kg <0.1 <0.1 <0.1 <0.1 <0.1

Acenaphthylene mg/kg <0.1 <0.1 <0.1 <0.1 <0.1

Acenaphthene mg/kg <0.1 <0.1 <0.1 <0.1 <0.1

Fluorene mg/kg <0.1 <0.1 <0.1 <0.1 <0.1

Phenanthrene mg/kg <0.1 <0.1 <0.1 <0.1 <0.1

Anthracene mg/kg <0.1 <0.1 <0.1 <0.1 <0.1

Fluoranthene mg/kg <0.1 <0.1 <0.1 <0.1 <0.1

Pyrene mg/kg <0.1 <0.1 <0.1 <0.1 <0.1

Benzo(a)anthracene mg/kg <0.1 <0.1 <0.1 <0.1 <0.1

Chrysene mg/kg <0.1 <0.1 <0.1 <0.1 <0.1

Benzo(b,j+k)fluoranthene mg/kg <0.2 <0.2 <0.2 <0.2 <0.2

Benzo(a)pyrene mg/kg <0.05 <0.05 <0.05 <0.05 <0.05

Indeno(1,2,3-c,d)pyrene mg/kg <0.1 <0.1 <0.1 <0.1 <0.1

Dibenzo(a,h)anthracene mg/kg <0.1 <0.1 <0.1 <0.1 <0.1

Benzo(g,h,i)perylene mg/kg <0.1 <0.1 <0.1 <0.1 <0.1

Benzo(a)pyrene TEQ calc (zero) mg/kg <0.5 <0.5 <0.5 <0.5 <0.5

Benzo(a)pyrene TEQ calc(half) mg/kg <0.5 <0.5 <0.5 <0.5 <0.5

Benzo(a)pyrene TEQ calc(PQL) mg/kg <0.5 <0.5 <0.5 <0.5 <0.5

Total +ve PAH's mg/kg <0.05 <0.05 <0.05 <0.05 <0.05

Surrogate p-Terphenyl-d14 % 96 96 96 92 98


Revision No: R 00


PAHs in Soil



-

SED6

Date Sampled ------------ 13/06/2017




Naphthalene mg/kg <0.1

Acenaphthylene mg/kg <0.1

Acenaphthene mg/kg <0.1

Fluorene mg/kg <0.1

Phenanthrene mg/kg <0.1

Anthracene mg/kg <0.1

Fluoranthene mg/kg <0.1

Pyrene mg/kg <0.1

Benzo(a)anthracene mg/kg <0.1

Chrysene mg/kg <0.1

Benzo(b,j+k)fluoranthene mg/kg <0.2

Benzo(a)pyrene mg/kg <0.05

Indeno(1,2,3-c,d)pyrene mg/kg <0.1

Dibenzo(a,h)anthracene mg/kg <0.1

Benzo(g,h,i)perylene mg/kg <0.1

Benzo(a)pyrene TEQ calc (zero) mg/kg <0.5

Benzo(a)pyrene TEQ calc(half) mg/kg <0.5

Benzo(a)pyrene TEQ calc(PQL) mg/kg <0.5

Total +ve PAH's mg/kg <0.05

Surrogate p-Terphenyl-d14 % 90


Revision No: R 00


Organochlorine Pesticides in soil



-

SED2 SED4 SED6

Date Sampled ------------ 13/06/2017 13/06/2017 13/06/2017

Type of sample Sediment Sediment Sediment

Date extracted - 14/06/2017 14/06/2017 14/06/2017

Date analysed - 14/06/2017 14/06/2017 14/06/2017

HCB mg/kg <0.1 <0.1 <0.1

alpha-BHC mg/kg <0.1 <0.1 <0.1

gamma-BHC mg/kg <0.1 <0.1 <0.1

beta-BHC mg/kg <0.1 <0.1 <0.1

Heptachlor mg/kg <0.1 <0.1 <0.1

delta-BHC mg/kg <0.1 <0.1 <0.1

Aldrin mg/kg <0.1 <0.1 <0.1

Heptachlor Epoxide mg/kg <0.1 <0.1 <0.1

gamma-Chlordane mg/kg <0.1 <0.1 <0.1

alpha-chlordane mg/kg <0.1 <0.1 <0.1

Endosulfan I mg/kg <0.1 <0.1 <0.1

pp-DDE mg/kg <0.1 <0.1 <0.1

Dieldrin mg/kg <0.1 <0.1 <0.1

Endrin mg/kg <0.1 <0.1 <0.1

pp-DDD mg/kg <0.1 <0.1 <0.1

Endosulfan II mg/kg <0.1 <0.1 <0.1

pp-DDT mg/kg <0.1 <0.1 <0.1

Endrin Aldehyde mg/kg <0.1 <0.1 <0.1

Endosulfan Sulphate mg/kg <0.1 <0.1 <0.1

Methoxychlor mg/kg <0.1 <0.1 <0.1

Total +ve DDT+DDD+DDE mg/kg <0.1 <0.1 <0.1



Revision No: R 00


Organophosphorus Pesticides



-

SED2 SED4 SED6

Date Sampled ------------ 13/06/2017 13/06/2017 13/06/2017


Date extracted - 14/06/2017 14/06/2017 14/06/2017

Date analysed - 14/06/2017 14/06/2017 14/06/2017

Azinphos-methyl (Guthion) mg/kg <0.1 <0.1 <0.1

Bromophos-ethyl mg/kg <0.1 <0.1 <0.1

Chlorpyriphos mg/kg <0.1 <0.1 <0.1

Chlorpyriphos-methyl mg/kg <0.1 <0.1 <0.1

Diazinon mg/kg <0.1 <0.1 <0.1

Dichlorvos mg/kg <0.1 <0.1 <0.1

Dimethoate mg/kg <0.1 <0.1 <0.1

Ethion mg/kg <0.1 <0.1 <0.1

Fenitrothion mg/kg <0.1 <0.1 <0.1

Malathion mg/kg <0.1 <0.1 <0.1

Parathion mg/kg <0.1 <0.1 <0.1

Ronnel mg/kg <0.1 <0.1 <0.1



Revision No: R 00


PCBs in Soil



-

SED2 SED4 SED6

Date Sampled ------------ 13/06/2017 13/06/2017 13/06/2017


Date extracted - 14/06/2017 14/06/2017 14/06/2017

Date analysed - 14/06/2017 14/06/2017 14/06/2017

Aroclor 1016 mg/kg <0.1 <0.1 <0.1

Aroclor 1221 mg/kg <0.1 <0.1 <0.1

Aroclor 1232 mg/kg <0.1 <0.1 <0.1

Aroclor 1242 mg/kg <0.1 <0.1 <0.1

Aroclor 1248 mg/kg <0.1 <0.1 <0.1

Aroclor 1254 mg/kg <0.1 <0.1 <0.1

Aroclor 1260 mg/kg <0.1 <0.1 <0.1

Total +ve PCBs (1016-1260) mg/kg <0.1 <0.1 <0.1

Surrogate TCLMX % 100 103 97


Revision No: R 00


Acid Extractable metals in soil



-


Date Sampled ------------ 13/06/2017 13/06/2017 13/06/2017 13/06/2017 13/06/2017


Date prepared - 14/06/2017 14/06/2017 14/06/2017 14/06/2017 14/06/2017

Date analysed - 14/06/2017 14/06/2017 14/06/2017 14/06/2017 14/06/2017

Arsenic mg/kg 10 8 7 10 15

Cadmium mg/kg <0.4 <0.4 <0.4 <0.4 <0.4

Chromium mg/kg 18 12 20 17 21

Copper mg/kg 14 44 14 23 24

Lead mg/kg 16 18 14 16 19

Mercury mg/kg <0.1 <0.1 <0.1 <0.1 <0.1

Nickel mg/kg 6 11 11 7 9

Zinc mg/kg 23 71 43 67 52




-

SED6

Date Sampled ------------ 13/06/2017




Arsenic mg/kg 11

Cadmium mg/kg <0.4

Chromium mg/kg 16

Copper mg/kg 21

Lead mg/kg 16

Mercury mg/kg <0.1

Nickel mg/kg 6

Zinc mg/kg 39


Revision No: R 00


Moisture



-


Date Sampled ------------ 13/06/2017 13/06/2017 13/06/2017 13/06/2017 13/06/2017


Date prepared - 14/06/2017 14/06/2017 14/06/2017 14/06/2017 14/06/2017

Date analysed - 15/06/2017 15/06/2017 15/06/2017 15/06/2017 15/06/2017

Moisture % 22 23 24 24 20

Moisture



-

SED6

Date Sampled ------------ 13/06/2017




Moisture % 26


Revision No: R 00


Method ID Methodology Summary

Org-005 Soil samples are extracted with dichloromethane/acetone and waters with dichloromethane and analysed by

GC with dual ECD's.


GC with dual ECD's.

Metals-022 Determination of various metals by ICP-MS.

Metals-021 Determination of Mercury by Cold Vapour AAS.

Inorg-001 pH - Measured using pH meter and electrode in accordance with APHA latest edition, 4500-H+. Please note

that the results for water analyses are indicative only, as analysis outside of the APHA storage times.

Inorg-002 Conductivity and Salinity - measured using a conductivity cell at 25°C in accordance with APHA latest edition

2510 and Rayment & Lyons.

Inorg-091 BOD - Analysed in accordance with APHA latest edition 5210 D and in house INORG-091.

Inorg-019 Suspended Solids - determined gravimetricially by filtration of the sample. The samples are dried at 104+/-5°C.

Ext-008 Subcontracted to Sonic Food & Water Testing. NATA Accreditation No. 4034.

Org-016 Soil samples are extracted with methanol and spiked into water prior to analysing by purge and trap GC-MS.

Water samples are analysed directly by purge and trap GC-MS. F1 = (C6-C10)-BTEX as per NEPM B1

Guideline on Investigation Levels for Soil and Groundwater.


Water samples are analysed directly by purge and trap GC-MS. F1 = (C6-C10)-BTEX as per NEPM B1

Guideline on Investigation Levels for Soil and Groundwater.

Note, the Total +ve Xylene PQL is reflective of the lowest individual PQL and is therefore "Total +ve Xylenes"

is simply a sum of the positive individual Xylenes.


Org-003 Soil samples are extracted with Dichloromethane/Acetone and waters with Dichloromethane and analysed by

GC-FID.

F2 = (>C10-C16)-Naphthalene as per NEPM B1 Guideline on Investigation Levels for Soil and Groundwater

(HSLs Tables 1A (3, 4)). Note Naphthalene is determined from the VOC analysis.


GC-FID.

F2 = (>C10-C16)-Naphthalene as per NEPM B1 Guideline on Investigation Levels for Soil and Groundwater

(HSLs Tables 1A (3, 4)). Note Naphthalene is determined from the VOC analysis.

Note, the Total +ve TRH PQL is reflective of the lowest individual PQL and is therefore "Total +ve TRH" is

simply a sum of the positive individual TRH fractions (>C10-C40).


GC-MS. Benzo(a)pyrene TEQ as per NEPM B1 Guideline on Investigation Levels for Soil and Groundwater -

2013.

For soil results:-

1. ‘TEQ PQL’ values are assuming all contributing PAHs reported as <PQL are actually at the PQL. This is the

most conservative approach and can give false positive TEQs given that PAHs that contribute to the TEQ

calculation may not be present.

2. ‘TEQ zero’ values are assuming all contributing PAHs reported as <PQL are zero. This is the least

conservative approach and is more susceptible to false negative TEQs when PAHs that contribute to the TEQ

calculation are present but below PQL.

3. ‘TEQ half PQL’ values are assuming all contributing PAHs reported as <PQL are half the stipulated PQL.

Hence a mid-point between the most and least conservative approaches above.


Revision No: R 00


Method ID Methodology Summary

Note, the Total +ve PAHs PQL is reflective of the lowest individual PQL and is therefore "Total +ve PAHs" is

simply a sum of the positive individual PAHs.


GC with dual ECD's.

Note, the Total +ve reported DDD+DDE+DDT PQL is reflective of the lowest individual PQL and is therefore

simply a sum of the positive individually report DDD+DDE+DDT.


GC-ECD.


GC-ECD.

Note, the Total +ve PCBs PQL is reflective of the lowest individual PQL and is therefore" Total +ve PCBs" is

simply a sum of the positive individual PCBs.

Metals-020 Determination of various metals by ICP-AES.

Inorg-008 Moisture content determined by heating at 105+/-5 °C for a minimum of 12 hours.


Revision No: R 00


QUALITY CONTROL UNITS PQL METHOD Blank Duplicate

Sm#

Duplicate results Spike Sm# Spike %

Recovery

OCP in water Base ll Duplicate ll %RPD


017

[NT] [NT] LCS-W1 14/06/2017


017

[NT] [NT] LCS-W1 14/06/2017

HCB µg/L 0.2 Org-005 <0.2 [NT] [NT] [NR] [NR]

alpha-BHC µg/L 0.2 Org-005 <0.2 [NT] [NT] LCS-W1 76%

gamma-BHC µg/L 0.2 Org-005 <0.2 [NT] [NT] [NR] [NR]

beta-BHC µg/L 0.2 Org-005 <0.2 [NT] [NT] LCS-W1 92%

Heptachlor µg/L 0.2 Org-005 <0.2 [NT] [NT] LCS-W1 97%

delta-BHC µg/L 0.2 Org-005 <0.2 [NT] [NT] [NR] [NR]

Aldrin µg/L 0.2 Org-005 <0.2 [NT] [NT] LCS-W1 89%

Heptachlor Epoxide µg/L 0.2 Org-005 <0.2 [NT] [NT] LCS-W1 91%

gamma-Chlordane µg/L 0.2 Org-005 <0.2 [NT] [NT] [NR] [NR]

alpha-Chlordane µg/L 0.2 Org-005 <0.2 [NT] [NT] [NR] [NR]

Endosulfan I µg/L 0.2 Org-005 <0.2 [NT] [NT] [NR] [NR]

pp-DDE µg/L 0.2 Org-005 <0.2 [NT] [NT] LCS-W1 92%

Dieldrin µg/L 0.2 Org-005 <0.2 [NT] [NT] LCS-W1 99%

Endrin µg/L 0.2 Org-005 <0.2 [NT] [NT] LCS-W1 94%

pp-DDD µg/L 0.2 Org-005 <0.2 [NT] [NT] LCS-W1 99%

Endosulfan II µg/L 0.2 Org-005 <0.2 [NT] [NT] [NR] [NR]

pp-DDT µg/L 0.2 Org-005 <0.2 [NT] [NT] [NR] [NR]

Endrin Aldehyde µg/L 0.2 Org-005 <0.2 [NT] [NT] [NR] [NR]

Endosulfan Sulphate µg/L 0.2 Org-005 <0.2 [NT] [NT] LCS-W1 89%

Methoxychlor µg/L 0.2 Org-005 <0.2 [NT] [NT] [NR] [NR]

Surrogate TCMX % Org-005 90 [NT] [NT] LCS-W1 88%


Revision No: R 00



Sm#


Recovery

OP Pesticides in water Base ll Duplicate ll %RPD


017

[NT] [NT] LCS-W1 14/06/2017


017

[NT] [NT] LCS-W1 14/06/2017

Azinphos-methyl

(Guthion)

µg/L 0.2 Org-008 <0.2 [NT] [NT] [NR] [NR]

Bromophos ethyl µg/L 0.2 Org-008 <0.2 [NT] [NT] [NR] [NR]

Chlorpyriphos µg/L 0.2 Org-008 <0.2 [NT] [NT] LCS-W1 80%

Chlorpyriphos-methyl µg/L 0.2 Org-008 <0.2 [NT] [NT] [NR] [NR]

Diazinon µg/L 0.2 Org-008 <0.2 [NT] [NT] [NR] [NR]

Dichlorovos µg/L 0.2 Org-008 <0.2 [NT] [NT] LCS-W1 75%

Dimethoate µg/L 0.2 Org-008 <0.2 [NT] [NT] [NR] [NR]

Ethion µg/L 0.2 Org-008 <0.2 [NT] [NT] LCS-W1 85%

Fenitrothion µg/L 0.2 Org-008 <0.2 [NT] [NT] LCS-W1 89%

Malathion µg/L 0.2 Org-008 <0.2 [NT] [NT] LCS-W1 84%

Parathion µg/L 0.2 Org-008 <0.2 [NT] [NT] LCS-W1 99%

Ronnel µg/L 0.2 Org-008 <0.2 [NT] [NT] LCS-W1 87%

Surrogate TCMX % Org-008 90 [NT] [NT] LCS-W1 83%


Sm#


Recovery

HM in water - dissolved Base ll Duplicate ll %RPD


017

169056-2 15/06/2017 || 15/06/2017 LCS-W1 14/06/2017


017

169056-2 15/06/2017 || 15/06/2017 LCS-W1 14/06/2017

Arsenic-Dissolved µg/L 1 Metals-022 <1 169056-2 <1 || <1 LCS-W1 97%

Cadmium-Dissolved µg/L 0.1 Metals-022 <0.1 169056-2 <0.1 || <0.1 LCS-W1 100%

Chromium-Dissolved µg/L 1 Metals-022 <1 169056-2 1 || 1 || RPD: 0 LCS-W1 101%

Copper-Dissolved µg/L 1 Metals-022 <1 169056-2 3 || 3 || RPD: 0 LCS-W1 102%

Lead-Dissolved µg/L 1 Metals-022 <1 169056-2 <1 || <1 LCS-W1 98%

Mercury-Dissolved µg/L 0.05 Metals-021 <0.05 169056-2 <0.05 || [N/T] LCS-W1 92%

Nickel-Dissolved µg/L 1 Metals-022 <1 169056-2 1 || 1 || RPD: 0 LCS-W1 96%

Zinc-Dissolved µg/L 1 Metals-022 <1 169056-2 11 || 11 || RPD: 0 LCS-W1 99%


Revision No: R 00



Sm#


Recovery

Miscellaneous Inorganics Base ll Duplicate ll %RPD


017

[NT] [NT] LCS-W1 13/06/2017


017

[NT] [NT] LCS-W1 13/06/2017

pH pH Units Inorg-001 [NT] [NT] [NT] LCS-W1 101%

Electrical Conductivity µS/cm 1 Inorg-002 <1 [NT] [NT] LCS-W1 96%

BOD mg/L 5 Inorg-091 <5 [NT] [NT] LCS-W1 81%

Total Suspended Solids mg/L 5 Inorg-019 <5 [NT] [NT] LCS-W1 95%

QUALITY CONTROL UNITS PQL METHOD Blank


Date of testing - [NT]

Faecal Coliforms MPN/100

mL

1 Ext-008 [NT]


vTRH(C6-C10)/BTEXN in

Soil


017


017

TRH C6 - C9 mg/kg 25 Org-016 <25

TRH C6 - C10 mg/kg 25 Org-016 <25

Benzene mg/kg 0.2 Org-016 <0.2

Toluene mg/kg 0.5 Org-016 <0.5

Ethylbenzene mg/kg 1 Org-016 <1

m+p-xylene mg/kg 2 Org-016 <2

o-Xylene mg/kg 1 Org-016 <1

naphthalene mg/kg 1 Org-014 <1

Surrogate aaa-

Trifluorotoluene

% Org-016 81




017


017

TRH C10 - C14 mg/kg 50 Org-003 <50

TRH C15 - C28 mg/kg 100 Org-003 <100

TRH C29 - C36 mg/kg 100 Org-003 <100

TRH >C10-C16 mg/kg 50 Org-003 <50

TRH >C16-C34 mg/kg 100 Org-003 <100

TRH >C34-C40 mg/kg 100 Org-003 <100

Surrogate o-Terphenyl % Org-003 97


Revision No: R 00



PAHs in Soil


017


017

Naphthalene mg/kg 0.1 Org-012 <0.1

Acenaphthylene mg/kg 0.1 Org-012 <0.1

Acenaphthene mg/kg 0.1 Org-012 <0.1

Fluorene mg/kg 0.1 Org-012 <0.1

Phenanthrene mg/kg 0.1 Org-012 <0.1

Anthracene mg/kg 0.1 Org-012 <0.1

Fluoranthene mg/kg 0.1 Org-012 <0.1

Pyrene mg/kg 0.1 Org-012 <0.1

Benzo(a)anthracene mg/kg 0.1 Org-012 <0.1

Chrysene mg/kg 0.1 Org-012 <0.1

Benzo(b,j+k)

fluoranthene

mg/kg 0.2 Org-012 <0.2

Benzo(a)pyrene mg/kg 0.05 Org-012 <0.05

Indeno(1,2,3-c,d)pyrene mg/kg 0.1 Org-012 <0.1

Dibenzo(a,h)anthracene mg/kg 0.1 Org-012 <0.1

Benzo(g,h,i)perylene mg/kg 0.1 Org-012 <0.1

Surrogate p-Terphenyl-

d14

% Org-012 99


Organochlorine

Pesticides in soil


017


017

HCB mg/kg 0.1 Org-005 <0.1

alpha-BHC mg/kg 0.1 Org-005 <0.1

gamma-BHC mg/kg 0.1 Org-005 <0.1

beta-BHC mg/kg 0.1 Org-005 <0.1

Heptachlor mg/kg 0.1 Org-005 <0.1

delta-BHC mg/kg 0.1 Org-005 <0.1

Aldrin mg/kg 0.1 Org-005 <0.1

Heptachlor Epoxide mg/kg 0.1 Org-005 <0.1

gamma-Chlordane mg/kg 0.1 Org-005 <0.1

alpha-chlordane mg/kg 0.1 Org-005 <0.1

Endosulfan I mg/kg 0.1 Org-005 <0.1

pp-DDE mg/kg 0.1 Org-005 <0.1

Dieldrin mg/kg 0.1 Org-005 <0.1

Endrin mg/kg 0.1 Org-005 <0.1

pp-DDD mg/kg 0.1 Org-005 <0.1

Endosulfan II mg/kg 0.1 Org-005 <0.1

pp-DDT mg/kg 0.1 Org-005 <0.1

Endrin Aldehyde mg/kg 0.1 Org-005 <0.1

Endosulfan Sulphate mg/kg 0.1 Org-005 <0.1


Revision No: R 00



Organochlorine

Pesticides in soil

Methoxychlor mg/kg 0.1 Org-005 <0.1

Surrogate TCMX % Org-005 90


Organophosphorus

Pesticides


017


017

Azinphos-methyl

(Guthion)

mg/kg 0.1 Org-008 <0.1

Bromophos-ethyl mg/kg 0.1 Org-008 <0.1

Chlorpyriphos mg/kg 0.1 Org-008 <0.1

Chlorpyriphos-methyl mg/kg 0.1 Org-008 <0.1

Diazinon mg/kg 0.1 Org-008 <0.1

Dichlorvos mg/kg 0.1 Org-008 <0.1

Dimethoate mg/kg 0.1 Org-008 <0.1

Ethion mg/kg 0.1 Org-008 <0.1

Fenitrothion mg/kg 0.1 Org-008 <0.1

Malathion mg/kg 0.1 Org-008 <0.1

Parathion mg/kg 0.1 Org-008 <0.1

Ronnel mg/kg 0.1 Org-008 <0.1

Surrogate TCMX % Org-008 90


PCBs in Soil


017


017

Aroclor 1016 mg/kg 0.1 Org-006 <0.1







Surrogate TCLMX % Org-006 90


Revision No: R 00



Acid Extractable metals

in soil


017


017

Arsenic mg/kg 4 Metals-020 <4

Cadmium mg/kg 0.4 Metals-020 <0.4

Chromium mg/kg 1 Metals-020 <1

Copper mg/kg 1 Metals-020 <1

Lead mg/kg 1 Metals-020 <1

Mercury mg/kg 0.1 Metals-021 <0.1

Nickel mg/kg 1 Metals-020 <1

Zinc mg/kg 1 Metals-020 <1

QUALITY CONTROL UNITS Dup. Sm# Duplicate Spike Sm# Spike % Recovery

vTRH(C6-C10)/BTEXN in

Soil

Base + Duplicate + %RPD

Date extracted - [NT] [NT] LCS-4 14/06/2017

Date analysed - [NT] [NT] LCS-4 14/06/2017

TRH C6 - C9 mg/kg [NT] [NT] LCS-4 93%


Benzene mg/kg [NT] [NT] LCS-4 97%

Toluene mg/kg [NT] [NT] LCS-4 93%

Ethylbenzene mg/kg [NT] [NT] LCS-4 95%

m+p-xylene mg/kg [NT] [NT] LCS-4 91%

o-Xylene mg/kg [NT] [NT] LCS-4 88%

naphthalene mg/kg [NT] [NT] [NR] [NR]

Surrogate aaa-

Trifluorotoluene

% [NT] [NT] LCS-4 89%


svTRH (C10-C40) in Soil Base + Duplicate + %RPD






TRH >C10-C16 mg/kg [NT] [NT] LCS-4 100%



Surrogate o-Terphenyl % [NT] [NT] LCS-4 86%


Revision No: R 00



PAHs in Soil Base + Duplicate + %RPD



Naphthalene mg/kg [NT] [NT] LCS-4 112%

Acenaphthylene mg/kg [NT] [NT] [NR] [NR]

Acenaphthene mg/kg [NT] [NT] [NR] [NR]

Fluorene mg/kg [NT] [NT] LCS-4 108%

Phenanthrene mg/kg [NT] [NT] LCS-4 109%

Anthracene mg/kg [NT] [NT] [NR] [NR]

Fluoranthene mg/kg [NT] [NT] LCS-4 110%

Pyrene mg/kg [NT] [NT] LCS-4 112%

Benzo(a)anthracene mg/kg [NT] [NT] [NR] [NR]

Chrysene mg/kg [NT] [NT] LCS-4 124%

Benzo(b,j+k)fluoranthene mg/kg [NT] [NT] [NR] [NR]

Benzo(a)pyrene mg/kg [NT] [NT] LCS-4 94%

Indeno(1,2,3-c,d)pyrene mg/kg [NT] [NT] [NR] [NR]

Dibenzo(a,h)anthracene mg/kg [NT] [NT] [NR] [NR]

Benzo(g,h,i)perylene mg/kg [NT] [NT] [NR] [NR]

Surrogate p-Terphenyl-d14 % [NT] [NT] LCS-4 123%


Organochlorine Pesticides

in soil




HCB mg/kg [NT] [NT] [NR] [NR]

alpha-BHC mg/kg [NT] [NT] LCS-4 86%

gamma-BHC mg/kg [NT] [NT] [NR] [NR]

beta-BHC mg/kg [NT] [NT] LCS-4 97%

Heptachlor mg/kg [NT] [NT] LCS-4 108%

delta-BHC mg/kg [NT] [NT] [NR] [NR]

Aldrin mg/kg [NT] [NT] LCS-4 98%

Heptachlor Epoxide mg/kg [NT] [NT] LCS-4 101%

gamma-Chlordane mg/kg [NT] [NT] [NR] [NR]

alpha-chlordane mg/kg [NT] [NT] [NR] [NR]

Endosulfan I mg/kg [NT] [NT] [NR] [NR]

pp-DDE mg/kg [NT] [NT] LCS-4 100%

Dieldrin mg/kg [NT] [NT] LCS-4 110%

Endrin mg/kg [NT] [NT] LCS-4 108%

pp-DDD mg/kg [NT] [NT] LCS-4 106%

Endosulfan II mg/kg [NT] [NT] [NR] [NR]

pp-DDT mg/kg [NT] [NT] [NR] [NR]

Endrin Aldehyde mg/kg [NT] [NT] [NR] [NR]

Endosulfan Sulphate mg/kg [NT] [NT] LCS-4 95%


Revision No: R 00



Organochlorine Pesticides

in soil


Methoxychlor mg/kg [NT] [NT] [NR] [NR]

Surrogate TCMX % [NT] [NT] LCS-4 129%


Organophosphorus

Pesticides




Azinphos-methyl (Guthion) mg/kg [NT] [NT] [NR] [NR]

Bromophos-ethyl mg/kg [NT] [NT] [NR] [NR]

Chlorpyriphos mg/kg [NT] [NT] LCS-4 93%

Chlorpyriphos-methyl mg/kg [NT] [NT] [NR] [NR]

Diazinon mg/kg [NT] [NT] [NR] [NR]

Dichlorvos mg/kg [NT] [NT] LCS-4 86%

Dimethoate mg/kg [NT] [NT] [NR] [NR]

Ethion mg/kg [NT] [NT] LCS-4 114%

Fenitrothion mg/kg [NT] [NT] LCS-4 107%

Malathion mg/kg [NT] [NT] LCS-4 85%

Parathion mg/kg [NT] [NT] LCS-4 97%

Ronnel mg/kg [NT] [NT] LCS-4 104%

Surrogate TCMX % [NT] [NT] LCS-4 104%


PCBs in Soil Base + Duplicate + %RPD



Aroclor 1016 mg/kg [NT] [NT] [NR] [NR]





Aroclor 1254 mg/kg [NT] [NT] LCS-4 117%


Surrogate TCLMX % [NT] [NT] LCS-4 104%


Revision No: R 00



Acid Extractable metals in

soil


Date prepared - [NT] [NT] LCS-4 14/06/2017


Arsenic mg/kg [NT] [NT] LCS-4 114%

Cadmium mg/kg [NT] [NT] LCS-4 100%

Chromium mg/kg [NT] [NT] LCS-4 109%

Copper mg/kg [NT] [NT] LCS-4 108%

Lead mg/kg [NT] [NT] LCS-4 104%

Mercury mg/kg [NT] [NT] LCS-4 105%

Nickel mg/kg [NT] [NT] LCS-4 100%

Zinc mg/kg [NT] [NT] LCS-4 103%


HM in water - dissolved Base + Duplicate + %RPD

Date prepared - [NT] [NT] 169056-4 14/06/2017

Date analysed - [NT] [NT] 169056-4 14/06/2017

Arsenic-Dissolved µg/L [NT] [NT] 169056-4 99%

Cadmium-Dissolved µg/L [NT] [NT] 169056-4 99%

Chromium-Dissolved µg/L [NT] [NT] 169056-4 101%

Copper-Dissolved µg/L [NT] [NT] 169056-4 98%

Lead-Dissolved µg/L [NT] [NT] 169056-4 97%

Mercury-Dissolved µg/L [NT] [NT] [NR] [NR]

Nickel-Dissolved µg/L [NT] [NT] 169056-4 94%

Zinc-Dissolved µg/L [NT] [NT] 169056-4 100%


Revision No: R 00


Report Comments:

Dissolved Metals: The preserved sample provided was not identified as

either total or dissolved, and appears to contain sediment and/or colloids,

therefore the unpreserved sample was filtered through 0.45 µm filter at the lab.

Note: there is a possibility some elements may be underestimated.

Faecal Coliform analysed by Sonic Food & Water Testing. Report No.W1710975.

Asbestos ID was analysed by Approved Identifier: Not applicable for this job

Asbestos ID was authorised by Approved Signatory: Not applicable for this job

INS: Insufficient sample for this test PQL: Practical Quantitation Limit NT: Not tested

NR: Test not required RPD: Relative Percent Difference NA: Test not required

<: Less than >: Greater than LCS: Laboratory Control Sample


Revision No: R 00


Quality Control Definitions

Blank: This is the component of the analytical signal which is not derived from the sample but from reagents,

glassware etc, can be determined by processing solvents and reagents in exactly the same manner as for samples.

Duplicate : This is the complete duplicate analysis of a sample from the process batch. If possible, the sample

selected should be one where the analyte concentration is easily measurable.

Matrix Spike : A portion of the sample is spiked with a known concentration of target analyte. The purpose of the matrix

spike is to monitor the performance of the analytical method used and to determine whether matrix interferences exist.

LCS (Laboratory Control Sample) : This comprises either a standard reference material or a control matrix (such as a blank

sand or water) fortified with analytes representative of the analyte class. It is simply a check sample.

Surrogate Spike: Surrogates are known additions to each sample, blank, matrix spike and LCS in a batch, of compounds

which are similar to the analyte of interest, however are not expected to be found in real samples.

Laboratory Acceptance Criteria

Duplicate sample and matrix spike recoveries may not be reported on smaller jobs, however, were analysed at a frequency

to meet or exceed NEPM requirements. All samples are tested in batches of 20. The duplicate sample RPD and matrix

spike recoveries for the batch were within the laboratory acceptance criteria.

Filters, swabs, wipes, tubes and badges will not have duplicate data as the whole sample is generally extracted

during sample extraction.

Spikes for Physical and Aggregate Tests are not applicable.

For VOCs in water samples, three vials are required for duplicate or spike analysis.

Duplicates: <5xPQL - any RPD is acceptable; >5xPQL - 0-50% RPD is acceptable.

Matrix Spikes, LCS and Surrogate recoveries: Generally 70-130% for inorganics/metals; 60-140%

for organics (+/-50% surrogates) and 10-140% for labile SVOCs (including labile surrogates), ultra trace organics

and speciated phenols is acceptable.

In circumstances where no duplicate and/or sample spike has been reported at 1 in 10 and/or 1 in 20 samples

respectively, the sample volume submitted was insufficient in order to satisfy laboratory QA/QC protocols.

When samples are received where certain analytes are outside of recommended technical holding times (THTs),

the analysis has proceeded. Where analytes are on the verge of breaching THTs, every effort will be made to analyse

within the THT or as soon as practicable.

Where sampling dates are not provided, Envirolab are not in a position to comment on the validity

of the analysis where recommended technical holding times may have been breached.

Measurement Uncertainty estimates are available for most tests upon request.


Revision No: R 00

Envirolab Services Pty Ltd

ABN 37 112 535 645

12 Ashley St Chatswood NSW 2067

ph 02 9910 6200 fax 02 9910 6201

[email protected]

www.envirolab.com.au

CERTIFICATE OF ANALYSIS 192254

Unit 11 Macquarie Link, 277 Lane Cove Rd, Macquarie Park, NSW, 2113Address

Russell JarmanAttention

DLA Environmental Services Pty LtdClient

Client Details

22/05/2018Date completed instructions received

22/05/2018Date samples received

2 Soil, 2 WaterNumber of Samples

DL0462359Your Reference

Sample Details

Please refer to the last page of this report for any comments relating to the results.

Results are reported on a dry weight basis for solids and on an as received basis for other matrices.

Samples were analysed as received from the client. Results relate specifically to the samples as received.

Please refer to the following pages for results, methodology summary and quality control data.

Analysis Details

Tests not covered by NATA are denoted with *Accredited for compliance with ISO/IEC 17025 - Testing.

NATA Accreditation Number 2901. This document shall not be reproduced except in full.

29/05/2018Date of Issue

29/05/2018Date results requested by

Report Details

Jacinta Hurst, Laboratory Manager

Authorised By

Steven Luong, Senior Chemist

Nick Sarlamis, Inorganics Supervisor

Nancy Zhang, Assistant Lab Manager

Long Pham, Team Leader, Metals

Jeremy Faircloth, Organics Supervisor

Jaimie Loa-Kum-Cheung, Senior Chemist

Dragana Tomas, Senior Chemist

Results Approved By

Revision No: R00

192254Envirolab Reference: Page | 1 of 29

Client Reference: DL0462359

9694%Surrogate aaa-Trifluorotoluene

<1<1mg/kgTotal +ve Xylenes

<1<1mg/kgnaphthalene

<1<1mg/kgo-Xylene

<2<2mg/kgm+p-xylene

<1<1mg/kgEthylbenzene

<0.5<0.5mg/kgToluene

<0.2<0.2mg/kgBenzene

<25<25mg/kgvTPH C6 - C10 less BTEX (F1)

<25<25mg/kgTRH C6 - C10

<25<25mg/kgTRH C6 - C9

24/05/201824/05/2018-Date analysed

23/05/201823/05/2018-Date extracted

SoilSoilType of sample

22/05/201822/05/2018Date Sampled

Sed-2Sed-1UNITSYour Reference

192254-2192254-1Our Reference


Envirolab Reference: 192254

R00Revision No:

Page | 2 of 29


109112%Surrogate o-Terphenyl

440500mg/kgTotal +ve TRH (>C10-C40)

140160mg/kgTRH >C34 -C40

300340mg/kgTRH >C16 -C34

<50<50mg/kgTRH >C10 - C16 less Naphthalene (F2)

<50<50mg/kgTRH >C10 -C16

250280mg/kgTRH C29 - C36

140160mg/kgTRH C15 - C28

<50<50mg/kgTRH C10 - C14

25/05/201825/05/2018-Date analysed

23/05/201823/05/2018-Date extracted


22/05/201822/05/2018Date Sampled





R00Revision No:

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100103%Surrogate p-Terphenyl-d14

<0.5<0.5mg/kgBenzo(a)pyrene TEQ calc(PQL)

<0.5<0.5mg/kgBenzo(a)pyrene TEQ calc(half)

<0.5<0.5mg/kgBenzo(a)pyrene TEQ calc (zero)

<0.05<0.05mg/kgTotal +ve PAH's

<0.1<0.1mg/kgBenzo(g,h,i)perylene

<0.1<0.1mg/kgDibenzo(a,h)anthracene

<0.1<0.1mg/kgIndeno(1,2,3-c,d)pyrene

<0.05<0.05mg/kgBenzo(a)pyrene

<0.2<0.2mg/kgBenzo(b,j+k)fluoranthene

<0.1<0.1mg/kgChrysene

<0.1<0.1mg/kgBenzo(a)anthracene

<0.1<0.1mg/kgPyrene

<0.1<0.1mg/kgFluoranthene

<0.1<0.1mg/kgAnthracene

<0.1<0.1mg/kgPhenanthrene

<0.1<0.1mg/kgFluorene

<0.1<0.1mg/kgAcenaphthene

<0.1<0.1mg/kgAcenaphthylene

<0.1<0.1mg/kgNaphthalene

24/05/201824/05/2018-Date analysed

23/05/201823/05/2018-Date extracted


22/05/201822/05/2018Date Sampled



PAHs in Soil


R00Revision No:

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109112%Surrogate TCMX

<0.1<0.1mg/kgTotal +ve DDT+DDD+DDE

<0.1<0.1mg/kgMethoxychlor

<0.1<0.1mg/kgEndosulfan Sulphate

<0.1<0.1mg/kgEndrin Aldehyde

<0.1<0.1mg/kgpp-DDT

<0.1<0.1mg/kgEndosulfan II

<0.1<0.1mg/kgpp-DDD

<0.1<0.1mg/kgEndrin

<0.1<0.1mg/kgDieldrin

<0.1<0.1mg/kgpp-DDE

<0.1<0.1mg/kgEndosulfan I

<0.1<0.1mg/kgalpha-chlordane

<0.1<0.1mg/kggamma-Chlordane

<0.1<0.1mg/kgHeptachlor Epoxide

<0.1<0.1mg/kgAldrin

<0.1<0.1mg/kgdelta-BHC

<0.1<0.1mg/kgHeptachlor

<0.1<0.1mg/kgbeta-BHC

<0.1<0.1mg/kggamma-BHC

<0.1<0.1mg/kgalpha-BHC

<0.1<0.1mg/kgHCB

24/05/201824/05/2018-Date analysed

23/05/201823/05/2018-Date extracted


22/05/201822/05/2018Date Sampled



Organochlorine Pesticides in soil


R00Revision No:

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109112%Surrogate TCMX

<0.1<0.1mg/kgRonnel

<0.1<0.1mg/kgParathion

<0.1<0.1mg/kgMalathion

<0.1<0.1mg/kgFenitrothion

<0.1<0.1mg/kgEthion

<0.1<0.1mg/kgDimethoate

<0.1<0.1mg/kgDichlorvos

<0.1<0.1mg/kgDiazinon

<0.1<0.1mg/kgChlorpyriphos-methyl

<0.1<0.1mg/kgChlorpyriphos

<0.1<0.1mg/kgBromophos-ethyl

<0.1<0.1mg/kgAzinphos-methyl (Guthion)

24/05/201824/05/2018-Date analysed

23/05/201823/05/2018-Date extracted


22/05/201822/05/2018Date Sampled



Organophosphorus Pesticides


R00Revision No:

Page | 6 of 29


5972mg/kgZinc

98mg/kgNickel

<0.1<0.1mg/kgMercury

2425mg/kgLead

1520mg/kgCopper

2120mg/kgChromium

<0.4<0.4mg/kgCadmium

1615mg/kgArsenic

23/05/201823/05/2018-Date analysed

23/05/201823/05/2018-Date prepared


22/05/201822/05/2018Date Sampled





R00Revision No:

Page | 7 of 29


35,0004,900MPN/100gFaecal Coliforms in soil

23/05/201823/05/2018-Date testing completed

23/05/201823/05/2018-Date testing started


22/05/201822/05/2018Date Sampled



Micro testing in soil


R00Revision No:

Page | 8 of 29


3447%Moisture

24/05/201824/05/2018-Date analysed

23/05/201823/05/2018-Date prepared


22/05/201822/05/2018Date Sampled



Moisture


R00Revision No:

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8981%Surrogate TCMX

<0.2<0.2µg/LMethoxychlor

<0.2<0.2µg/LEndosulfan Sulphate

<0.2<0.2µg/LEndrin Aldehyde

<0.2<0.2µg/Lpp-DDT

<0.2<0.2µg/LEndosulfan II

<0.2<0.2µg/Lpp-DDD

<0.2<0.2µg/LEndrin

<0.2<0.2µg/LDieldrin

<0.2<0.2µg/Lpp-DDE

<0.2<0.2µg/LEndosulfan I

<0.2<0.2µg/Lalpha-Chlordane

<0.2<0.2µg/Lgamma-Chlordane

<0.2<0.2µg/LHeptachlor Epoxide

<0.2<0.2µg/LAldrin

<0.2<0.2µg/Ldelta-BHC

<0.2<0.2µg/LHeptachlor

<0.2<0.2µg/Lbeta-BHC

<0.2<0.2µg/Lgamma-BHC

<0.2<0.2µg/Lalpha-BHC

<0.2<0.2µg/LHCB

23/05/201823/05/2018-Date analysed

23/05/201823/05/2018-Date extracted

WaterWaterType of sample

22/05/201822/05/2018Date Sampled

W2W1UNITSYour Reference


OCP in water


R00Revision No:

Page | 10 of 29


8981%Surrogate TCMX

<0.2<0.2µg/LRonnel

<0.2<0.2µg/LParathion

<0.2<0.2µg/LMalathion

<0.2<0.2µg/LFenitrothion

<0.2<0.2µg/LEthion

<0.2<0.2µg/LDimethoate

<0.2<0.2µg/LDichlorovos

<0.2<0.2µg/LDiazinon

<0.2<0.2µg/LChlorpyriphos-methyl

<0.2<0.2µg/LChlorpyriphos

<0.2<0.2µg/LBromophos ethyl

<0.2<0.2µg/LAzinphos-methyl (Guthion)

23/05/201823/05/2018-Date analysed

23/05/201823/05/2018-Date extracted


22/05/201822/05/2018Date Sampled



OP Pesticides in water


R00Revision No:

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6626mg/LBOD

5816mg/LTotal Suspended Solids

210220µS/cmElectrical Conductivity

7.17.0pH UnitspH

22/05/201522/05/2015-Date analysed

22/05/201822/05/2018-Date prepared


22/05/201822/05/2018Date Sampled





R00Revision No:

Page | 12 of 29


41µg/LZinc-Total

<1<1µg/LNickel-Total

<0.05<0.05µg/LMercury-Total

<1<1µg/LLead-Total

<1<1µg/LCopper-Total

<1<1µg/LChromium-Total

<0.1<0.1µg/LCadmium-Total

1<1µg/LArsenic-Total

24/05/201824/05/2018-Date analysed

23/05/201823/05/2018-Date prepared


22/05/201822/05/2018Date Sampled



HM in water - total


R00Revision No:

Page | 13 of 29


230 NBO230 NBOcfu/100mLFaecal Coliforms

23/05/201823/05/2018-Date of testing


22/05/201822/05/2018Date Sampled





R00Revision No:

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Soil samples are extracted with dichloromethane/acetone and waters with dichloromethane and analysed by GC with dual ECD's.

Org-008

Soil samples are extracted with dichloromethane/acetone and waters with dichloromethane and analysed by GC with dual ECD's. Note, the Total +ve reported DDD+DDE+DDT PQL is reflective of the lowest individual PQL and is therefore simply a sum of the positive individually report DDD+DDE+DDT.

Org-005

Soil samples are extracted with dichloromethane/acetone and waters with dichloromethane and analysed by GC with dual ECD's.

Org-005

Soil samples are extracted with Dichloromethane/Acetone and waters with Dichloromethane and analysed by GC-FID. F2 = (>C10-C16)-Naphthalene as per NEPM B1 Guideline on Investigation Levels for Soil and Groundwater (HSLs Tables 1A (3, 4)). Note Naphthalene is determined from the VOC analysis. Note, the Total +ve TRH PQL is reflective of the lowest individual PQL and is therefore "Total +ve TRH" is simply a sum of the positive individual TRH fractions (>C10-C40).

Org-003

Soil samples are extracted with Dichloromethane/Acetone and waters with Dichloromethane and analysed by GC-FID. F2 = (>C10-C16)-Naphthalene as per NEPM B1 Guideline on Investigation Levels for Soil and Groundwater (HSLs Tables 1A (3, 4)). Note Naphthalene is determined from the VOC analysis.

Org-003

Determination of various metals by ICP-MS. Metals-022

Determination of Mercury by Cold Vapour AAS. Metals-021

Determination of various metals by ICP-AES. Metals-020

BOD - Analysed in accordance with APHA latest edition 5210 D and in house INORG-091.Inorg-091

Suspended Solids - determined gravimetricially by filtration of the sample. The samples are dried at 104+/-5°C.Inorg-019

Moisture content determined by heating at 105+/-5 °C for a minimum of 12 hours.

Inorg-008

Conductivity and Salinity - measured using a conductivity cell at 25°C in accordance with APHA latest edition 2510 and Rayment & Lyons.

Inorg-002

pH - Measured using pH meter and electrode in accordance with APHA latest edition, 4500-H+. Please note that the results for water analyses are indicative only, as analysis outside of the APHA storage times.

Inorg-001

Subcontracted to Sonic Food & Water Testing. NATA Accreditation No. 4034.Ext-008

Methodology SummaryMethod ID


R00Revision No:

Page | 15 of 29


Soil samples are extracted with methanol and spiked into water prior to analysing by purge and trap GC-MS. Water samples are analysed directly by purge and trap GC-MS. F1 = (C6-C10)-BTEX as per NEPM B1 Guideline on Investigation Levels for Soil and Groundwater. Note, the Total +ve Xylene PQL is reflective of the lowest individual PQL and is therefore "Total +ve Xylenes" is simply a sum of the positive individual Xylenes.

Org-016

Soil samples are extracted with methanol and spiked into water prior to analysing by purge and trap GC-MS. Water samples are analysed directly by purge and trap GC-MS. F1 = (C6-C10)-BTEX as per NEPM B1 Guideline on Investigation Levels for Soil and Groundwater.

Org-016

Soil samples are extracted with methanol and spiked into water prior to analysing by purge and trap GC-MS. Org-014

Soil samples are extracted with Dichloromethane/Acetone and waters with Dichloromethane and analysed by GC-MS. Benzo(a)pyrene TEQ as per NEPM B1 Guideline on Investigation Levels for Soil and Groundwater - 2013. For soil results:- 1. ‘EQ PQL’values are assuming all contributing PAHs reported as <PQL are actually at the PQL. This is the most conservative approach and can give false positive TEQs given that PAHs that contribute to the TEQ calculation may not be present. 2. ‘EQ zero’values are assuming all contributing PAHs reported as <PQL are zero. This is the least conservative approach and is more susceptible to false negative TEQs when PAHs that contribute to the TEQ calculation are present but below PQL. 3. ‘EQ half PQL’values are assuming all contributing PAHs reported as <PQL are half the stipulated PQL. Hence a mid-point between the most and least conservative approaches above. Note, the Total +ve PAHs PQL is reflective of the lowest individual PQL and is therefore "Total +ve PAHs" is simply a sum of the positive individual PAHs.

Org-012

Methodology SummaryMethod ID


R00Revision No:

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[NT]118[NT][NT][NT][NT]117Org-016%Surrogate aaa-Trifluorotoluene

[NT][NT][NT][NT][NT][NT]<1Org-0141mg/kgnaphthalene

[NT]131[NT][NT][NT][NT]<1Org-0161mg/kgo-Xylene

[NT]126[NT][NT][NT][NT]<2Org-0162mg/kgm+p-xylene

[NT]125[NT][NT][NT][NT]<1Org-0161mg/kgEthylbenzene

[NT]123[NT][NT][NT][NT]<0.5Org-0160.5mg/kgToluene

[NT]119[NT][NT][NT][NT]<0.2Org-0160.2mg/kgBenzene

[NT]124[NT][NT][NT][NT]<25Org-01625mg/kgTRH C6 - C10


[NT]24/05/2018[NT][NT][NT][NT]24/05/2018-Date analysed

[NT]23/05/2018[NT][NT][NT][NT]23/05/2018-Date extracted

[NT]LCS-3RPDDup.Base#BlankMethodPQLUnitsTest Description

Spike Recovery %DuplicateQUALITY CONTROL: vTRH(C6-C10)/BTEXN in Soil


R00Revision No:

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[NT]113[NT][NT][NT][NT]96Org-003%Surrogate o-Terphenyl

[NT]92[NT][NT][NT][NT]<100Org-003100mg/kgTRH >C34 -C40









Spike Recovery %DuplicateQUALITY CONTROL: svTRH (C10-C40) in Soil


R00Revision No:

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[NT]115[NT][NT][NT][NT]98Org-012%Surrogate p-Terphenyl-d14

[NT][NT][NT][NT][NT][NT]<0.1Org-0120.1mg/kgBenzo(g,h,i)perylene

[NT][NT][NT][NT][NT][NT]<0.1Org-0120.1mg/kgDibenzo(a,h)anthracene

[NT][NT][NT][NT][NT][NT]<0.1Org-0120.1mg/kgIndeno(1,2,3-c,d)pyrene

[NT]95[NT][NT][NT][NT]<0.05Org-0120.05mg/kgBenzo(a)pyrene

[NT][NT][NT][NT][NT][NT]<0.2Org-0120.2mg/kgBenzo(b,j+k)fluoranthene

[NT]95[NT][NT][NT][NT]<0.1Org-0120.1mg/kgChrysene

[NT][NT][NT][NT][NT][NT]<0.1Org-0120.1mg/kgBenzo(a)anthracene

[NT]98[NT][NT][NT][NT]<0.1Org-0120.1mg/kgPyrene

[NT]98[NT][NT][NT][NT]<0.1Org-0120.1mg/kgFluoranthene

[NT][NT][NT][NT][NT][NT]<0.1Org-0120.1mg/kgAnthracene

[NT]96[NT][NT][NT][NT]<0.1Org-0120.1mg/kgPhenanthrene

[NT]97[NT][NT][NT][NT]<0.1Org-0120.1mg/kgFluorene

[NT][NT][NT][NT][NT][NT]<0.1Org-0120.1mg/kgAcenaphthene

[NT][NT][NT][NT][NT][NT]<0.1Org-0120.1mg/kgAcenaphthylene

[NT]96[NT][NT][NT][NT]<0.1Org-0120.1mg/kgNaphthalene




Spike Recovery %DuplicateQUALITY CONTROL: PAHs in Soil


R00Revision No:

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[NT]108[NT][NT][NT][NT]88Org-005%Surrogate TCMX

[NT][NT][NT][NT][NT][NT]<0.1Org-0050.1mg/kgMethoxychlor

[NT]86[NT][NT][NT][NT]<0.1Org-0050.1mg/kgEndosulfan Sulphate

[NT][NT][NT][NT][NT][NT]<0.1Org-0050.1mg/kgEndrin Aldehyde

[NT][NT][NT][NT][NT][NT]<0.1Org-0050.1mg/kgpp-DDT

[NT][NT][NT][NT][NT][NT]<0.1Org-0050.1mg/kgEndosulfan II

[NT]79[NT][NT][NT][NT]<0.1Org-0050.1mg/kgpp-DDD

[NT]91[NT][NT][NT][NT]<0.1Org-0050.1mg/kgEndrin

[NT]97[NT][NT][NT][NT]<0.1Org-0050.1mg/kgDieldrin

[NT]94[NT][NT][NT][NT]<0.1Org-0050.1mg/kgpp-DDE

[NT][NT][NT][NT][NT][NT]<0.1Org-0050.1mg/kgEndosulfan I

[NT][NT][NT][NT][NT][NT]<0.1Org-0050.1mg/kgalpha-chlordane

[NT][NT][NT][NT][NT][NT]<0.1Org-0050.1mg/kggamma-Chlordane

[NT]78[NT][NT][NT][NT]<0.1Org-0050.1mg/kgHeptachlor Epoxide

[NT][NT][NT][NT][NT][NT]<0.1Org-0050.1mg/kgAldrin

[NT][NT][NT][NT][NT][NT]<0.1Org-0050.1mg/kgdelta-BHC

[NT]78[NT][NT][NT][NT]<0.1Org-0050.1mg/kgHeptachlor

[NT]90[NT][NT][NT][NT]<0.1Org-0050.1mg/kgbeta-BHC

[NT][NT][NT][NT][NT][NT]<0.1Org-0050.1mg/kggamma-BHC

[NT]76[NT][NT][NT][NT]<0.1Org-0050.1mg/kgalpha-BHC

[NT][NT][NT][NT][NT][NT]<0.1Org-0050.1mg/kgHCB




Spike Recovery %DuplicateQUALITY CONTROL: Organochlorine Pesticides in soil


R00Revision No:

Page | 20 of 29



[NT]101[NT][NT][NT][NT]<0.1Org-0080.1mg/kgRonnel

[NT]82[NT][NT][NT][NT]<0.1Org-0080.1mg/kgParathion

[NT]71[NT][NT][NT][NT]<0.1Org-0080.1mg/kgMalathion

[NT]82[NT][NT][NT][NT]<0.1Org-0080.1mg/kgFenitrothion

[NT]114[NT][NT][NT][NT]<0.1Org-0080.1mg/kgEthion

[NT][NT][NT][NT][NT][NT]<0.1Org-0080.1mg/kgDimethoate

[NT]94[NT][NT][NT][NT]<0.1Org-0080.1mg/kgDichlorvos

[NT][NT][NT][NT][NT][NT]<0.1Org-0080.1mg/kgDiazinon

[NT][NT][NT][NT][NT][NT]<0.1Org-0080.1mg/kgChlorpyriphos-methyl

[NT]99[NT][NT][NT][NT]<0.1Org-0080.1mg/kgChlorpyriphos

[NT][NT][NT][NT][NT][NT]<0.1Org-0080.1mg/kgBromophos-ethyl

[NT][NT][NT][NT][NT][NT]<0.1Org-0080.1mg/kgAzinphos-methyl (Guthion)




Spike Recovery %DuplicateQUALITY CONTROL: Organophosphorus Pesticides


R00Revision No:

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98101374721<1Metals-0201mg/kgZinc

849812981<1Metals-0201mg/kgNickel

1021130<0.1<0.11<0.1Metals-0210.1mg/kgMercury

83100424251<1Metals-0201mg/kgLead

98103020201<1Metals-0201mg/kgCopper

88105519201<1Metals-0201mg/kgChromium

891020<0.4<0.41<0.4Metals-0200.4mg/kgCadmium

85107616151<4Metals-0204mg/kgArsenic

23/05/201823/05/201823/05/201823/05/2018123/05/2018-Date analysed

23/05/201823/05/201823/05/201823/05/2018123/05/2018-Date prepared

192254-2LCS-3RPDDup.Base#BlankMethodPQLUnitsTest Description

Spike Recovery %DuplicateQUALITY CONTROL: Acid Extractable metals in soil


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[NT][NT][NT][NT][NT][NT]<0.2Org-0050.2µg/LMethoxychlor

[NT]85[NT][NT][NT][NT]<0.2Org-0050.2µg/LEndosulfan Sulphate

[NT][NT][NT][NT][NT][NT]<0.2Org-0050.2µg/LEndrin Aldehyde

[NT][NT][NT][NT][NT][NT]<0.2Org-0050.2µg/Lpp-DDT

[NT][NT][NT][NT][NT][NT]<0.2Org-0050.2µg/LEndosulfan II

[NT]86[NT][NT][NT][NT]<0.2Org-0050.2µg/Lpp-DDD

[NT]85[NT][NT][NT][NT]<0.2Org-0050.2µg/LEndrin

[NT]94[NT][NT][NT][NT]<0.2Org-0050.2µg/LDieldrin

[NT]91[NT][NT][NT][NT]<0.2Org-0050.2µg/Lpp-DDE

[NT][NT][NT][NT][NT][NT]<0.2Org-0050.2µg/LEndosulfan I

[NT][NT][NT][NT][NT][NT]<0.2Org-0050.2µg/Lalpha-Chlordane

[NT][NT][NT][NT][NT][NT]<0.2Org-0050.2µg/Lgamma-Chlordane

[NT]82[NT][NT][NT][NT]<0.2Org-0050.2µg/LHeptachlor Epoxide

[NT]85[NT][NT][NT][NT]<0.2Org-0050.2µg/LAldrin

[NT][NT][NT][NT][NT][NT]<0.2Org-0050.2µg/Ldelta-BHC

[NT]85[NT][NT][NT][NT]<0.2Org-0050.2µg/LHeptachlor

[NT]77[NT][NT][NT][NT]<0.2Org-0050.2µg/Lbeta-BHC

[NT][NT][NT][NT][NT][NT]<0.2Org-0050.2µg/Lgamma-BHC

[NT]86[NT][NT][NT][NT]<0.2Org-0050.2µg/Lalpha-BHC

[NT][NT][NT][NT][NT][NT]<0.2Org-0050.2µg/LHCB



[NT]LCS-W1RPDDup.Base#BlankMethodPQLUnitsTest Description

Spike Recovery %DuplicateQUALITY CONTROL: OCP in water


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[NT]86[NT][NT][NT][NT]<0.2Org-0080.2µg/LRonnel

[NT]98[NT][NT][NT][NT]<0.2Org-0080.2µg/LParathion

[NT]96[NT][NT][NT][NT]<0.2Org-0080.2µg/LMalathion

[NT]96[NT][NT][NT][NT]<0.2Org-0080.2µg/LFenitrothion

[NT]84[NT][NT][NT][NT]<0.2Org-0080.2µg/LEthion

[NT][NT][NT][NT][NT][NT]<0.2Org-0080.2µg/LDimethoate

[NT]88[NT][NT][NT][NT]<0.2Org-0080.2µg/LDichlorovos

[NT][NT][NT][NT][NT][NT]<0.2Org-0080.2µg/LDiazinon

[NT][NT][NT][NT][NT][NT]<0.2Org-0080.2µg/LChlorpyriphos-methyl

[NT]82[NT][NT][NT][NT]<0.2Org-0080.2µg/LChlorpyriphos

[NT][NT][NT][NT][NT][NT]<0.2Org-0080.2µg/LBromophos ethyl

[NT][NT][NT][NT][NT][NT]<0.2Org-0080.2µg/LAzinphos-methyl (Guthion)




Spike Recovery %DuplicateQUALITY CONTROL: OP Pesticides in water


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[NT]82[NT][NT][NT][NT]<5Inorg-0915mg/LBOD

[NT]102[NT][NT][NT][NT]<5Inorg-0195mg/LTotal Suspended Solids

[NT]100[NT][NT][NT][NT]<1Inorg-0021µS/cmElectrical Conductivity

[NT]102[NT][NT][NT][NT][NT]Inorg-001pH UnitspH


[NT]22/05/2018[NT][NT][NT][NT]22/05/2018-Date prepared


Spike Recovery %DuplicateQUALITY CONTROL: Miscellaneous Inorganics


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[NT]91[NT]13<1Metals-0221µg/LZinc-Total

[NT]92[NT]<13<1Metals-0221µg/LNickel-Total

961000<0.05<0.053<0.05Metals-0210.05µg/LMercury-Total

[NT]99[NT]<13<1Metals-0221µg/LLead-Total

[NT]96[NT]<13<1Metals-0221µg/LCopper-Total

[NT]97[NT]<13<1Metals-0221µg/LChromium-Total

[NT]97[NT]<0.13<0.1Metals-0220.1µg/LCadmium-Total

[NT]95[NT]<13<1Metals-0221µg/LArsenic-Total

24/05/201824/05/201824/05/201824/05/2018324/05/2018-Date analysed

23/05/201823/05/201823/05/201823/05/2018323/05/2018-Date prepared

192254-4LCS-W2RPDDup.Base#BlankMethodPQLUnitsTest Description

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Not ReportedNR

National Environmental Protection MeasureNEPM

Not specifiedNS

Laboratory Control SampleLCS

Relative Percent DifferenceRPD

Greater than>

Less than<

Practical Quantitation LimitPQL

Insufficient sample for this testINS

Test not requiredNA

Not testedNT

Result Definitions

Australian Drinking Water Guidelines recommend that Thermotolerant Coliform, Faecal Enterococci, & E.Coli levels are less than1cfu/100mL. The recommended maximums are taken from "Australian Drinking Water Guidelines", published by NHMRC & ARMC2011.

Surrogates are known additions to each sample, blank, matrix spike and LCS in a batch, of compounds whichare similar to the analyte of interest, however are not expected to be found in real samples.

Surrogate Spike

This comprises either a standard reference material or a control matrix (such as a blank sand or water) fortifiedwith analytes representative of the analyte class. It is simply a check sample.

LCS (LaboratoryControl Sample)

A portion of the sample is spiked with a known concentration of target analyte. The purpose of the matrix spikeis to monitor the performance of the analytical method used and to determine whether matrix interferencesexist.

Matrix Spike

This is the complete duplicate analysis of a sample from the process batch. If possible, the sample selectedshould be one where the analyte concentration is easily measurable.

Duplicate

This is the component of the analytical signal which is not derived from the sample but from reagents,glassware etc, can be determined by processing solvents and reagents in exactly the same manner as forsamples.

Blank

Quality Control Definitions


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Measurement Uncertainty estimates are available for most tests upon request.

Where sampling dates are not provided, Envirolab are not in a position to comment on the validity of the analysis whererecommended technical holding times may have been breached.

When samples are received where certain analytes are outside of recommended technical holding times (THTs), the analysis hasproceeded. Where analytes are on the verge of breaching THTs, every effort will be made to analyse within the THT or as soon aspracticable.

In circumstances where no duplicate and/or sample spike has been reported at 1 in 10 and/or 1 in 20 samples respectively, thesample volume submitted was insufficient in order to satisfy laboratory QA/QC protocols.

Matrix Spikes, LCS and Surrogate recoveries: Generally 70-130% for inorganics/metals; 60-140% for organics (+/-50% surrogates)and 10-140% for labile SVOCs (including labile surrogates), ultra trace organics and speciated phenols is acceptable.

Duplicates: <5xPQL - any RPD is acceptable; >5xPQL - 0-50% RPD is acceptable.

For VOCs in water samples, three vials are required for duplicate or spike analysis.

Spikes for Physical and Aggregate Tests are not applicable.

Filters, swabs, wipes, tubes and badges will not have duplicate data as the whole sample is generally extracted during sampleextraction.

Duplicate sample and matrix spike recoveries may not be reported on smaller jobs, however, were analysed at a frequency to meetor exceed NEPM requirements. All samples are tested in batches of 20. The duplicate sample RPD and matrix spike recoveries forthe batch were within the laboratory acceptance criteria.

Laboratory Acceptance Criteria


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Faecal Coliform in water analysed by Sonic Food & Water Testing. Report No.W1809590. NBO:The presence of competing background organisms may have reduced the count. Faecal Coliform in soil analysed by Sonic Food & Water Testing. Report No.W1809600.

Report Comments


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13

Appendix B

Dam Decommissioning Work Method

Procedure





14

1 Dam Decommissioning Work Method Procedure

1.1 Scope of Works

Decommissioning Works at the site will consist of the following stages:

Inflow diversion;

Erosion controls;

Dewatering system installation;

Monitoring;

Sediment testing and removal; and

Wall removal and surface contouring.

1.2 Inflow Diversion

If required, an earthen bund can be developed at the dam entry points to prevent runoff

entering the dam once dewatering has commenced. The bund will divert water from the

potential entry points of the dams into a channel to be established prior to the installation of

the bund. The diversions are to be established prior to the dewatering of the dams which will

carry runoff to the grassed or open areas adjacent to the dams.

1.3 Dewatering

The dam will be dewatered by way of application to land using on-site irrigation networks. Due

to the relatively low volume of water currently contained within the dam, the most appropriate

method of dewatering will be via application to land. Water will be pumped into a sprinkler

system using the pumping units to be installed on-site, with the sprinklers positioned so that

water is applied to land within the property boundary. The total area onsite suitable for the

application of irrigation water is variable according to property size.

The most suitable option for the dewatering project has been determined following

consideration of public amenity, environmental impact, flow capacities and monitoring

outcomes among other factors. No water runoff will be permitted, with irrigation intensity

monitored so that runoff does not occur through either pumping or runoff from the sprinkler

system into any off-site receiving environment.

During dewatering activities, the following points should be observed when installing and

operating the dewatering system:

The inlet should be floated to avoid sediment pickup;

Dewatering must cease as directed, to allow for removal of ecology by an ecological

consultant (if required);

Flow rate may need to decrease at low water levels to account for sediments and fauna;

and,





15

Action must be taken immediately if the infiltration rates of water to land are exceeded

resulting in the generation of runoff from the site.

1.4 Erosion Controls

As water will be gradually applied to land and not discharged into nearby creeks, no erosion

of the natural environment is expected to occur. Current and existing sedimentation controls

in place around the dams should be continued during all dewatering works. If

construction/demolition works are to be undertaken during or at the time of dewatering,

additional sedimentation controls should be implemented in accordance with Managing Urban

Stormwater Soils and Construction (Landcom, 2004).

Extraction from the dam will take place from high in the water column, which will avoid erosion

of the sediments within the dam. When the water level drops to the extent that sediments are

affected, additional protection should be added to the inlet of the pipes. This may consist of

water being drawn from within a crate wrapped in silt mesh or Geo-fabric. Disturbance will

need to be minimised and the output of the system must be monitored more stringently at this

stage to gauge sediment transport potential.

Once dewatered, sediments will be removed from the base of the dams and stockpiled. All

stockpiles must be protected by silt fencing, which is to be inspected daily and kept in good

working order. Backfilling the dam will be undertaken as part of civil works at the site and

erosion controls should be implemented in accordance with Managing Urban Stormwater

Soils and Construction (Landcom, 2004) and any development conditions.

1.5 Monitoring

1.5.1 Water Levels Water levels should be monitored to ensure adequate water is retained prior to the removal of

fauna (if required) and so that excess sediments are not entrained.

1.5.2 Water Quality No ongoing water testing is required after the initial screening due to the closed system of the

dam and the less sensitive nature of the water application to land.

1.5.3 Ecology There were no signs of significant ecology in the dam when assessed as given the high

bacterial loads within the water it is not anticipated that further ecological assessments or

controls will be required during the dewatering process.

If required, a nominated ecological consultant will monitor all stages of the decommissioning.

This will include approving the inflow mesh cover on the de-watering pipe and all other

aspects of the project that could impact on the local ecology. When the deepest portion of the

dam water is lowered to a nominal depth of one meter, the ecological consultant can begin

the relocation of aquatic fauna. As the remaining water is drained from the dam, the

ecological consultant will continue to relocate the fauna from the dam as required.





16

1.5.4 Visual Inspection Visual inspections should be undertaken of the implemented dewatering system on a daily

basis to ensure all aspects are in good working order. Regular inspection of the irrigation area

where dam water is being applied to land should be undertaken to ensure no runoff is being

generated.

1.6 Contingencies

In the event that inspections or monitoring note that key indicators are not compliant, some

action will be required; examples may include:

Blockage or inadequate distribution of irrigation water to land:

1) Check excessive sediments are not being extracted at intake, if so take measures to

rectify.

2) Reassess pumping techniques to ensure adequate equipment is being used; e.g. is the

sprinkler device appropriate for the area of application?

Notable ponding / runoff of applied water:

1. Immediately stop irrigation / land application;

2. Reduce flow rate;

3. Potentially relocate to another area of land for irrigation onsite; or,

4. Cease irrigation until such time as water has infiltrated, prior to continued irrigation.





17

2 Soils

2.1 Sediment Reuse

Once dewatered, saturated sediments will be removed from the dam, placed into stockpiles

and drained. Previous assessments of the sediments have confirmed they are suitable for

beneficial land use onsite and do not require further assessment.

The stockpiles should be inspected for evidence of filling or foreign materials. Should

contamination of the sediments be suspected due to the presence of fill or foreign materials,

the material should be tested for all potential contaminants of concern including:

Heavy Metals;

BTEX;

OC/OP Pesticides;

Polycyclic Aromatic Hydrocarbons (PAHS); and

Hydrocarbons.

Sampling should be at the frequency of at least one sample for every 100m3 of sediment.

Where results demonstrate that sediments are compliant with the Health Investigation Levels

provided by the National Environment Protection (Assessment of Site Contamination)

Amendment Measure (NEPM) 2013 for ‘Residential A - Residential with Garden / Accessible

soils’, the sediments are considered suitable for beneficial reuse on the site without

restriction.

2.2 Wall Removal and Surface Contouring

Decommissioning and rehabilitation of the dam structures will be undertaken in accordance

the Development Application consent for civil work at the site. Backfill will be compacted to a

suitable level and final contours will allow overland flow to align with the surrounding

environment. These measures will avoid any future inflow which may cause instability from

tunnelling or erosion.

2.3 Design Irrigation Rate

Local soils have been assessed for the absorption capacity according to the Design Irrigation

Rate in the Australian Standards 1547:2012. The soil description of sandy loams with weak

structure, providing an indicative permeability of >3.0 m/d, indicating the nominated spray

irrigation is suitable for 5mm/day application.





18

3 Schedule

With the requirements for the dewatering of the dam water on-site, the predicted schedule will

likely be weather dependant as increased warm, dry climatic conditions are more conducive

to dewatering by application to land than in wet, cold climates.

Water application to land would only be conducted under supervision assuming the

operational hours are 7am – 5pm weekdays. It is expected that pumping would only be

undertaken for a few hours each day to allow for soil infiltration, evaporation and UV

exposure.

It has been calculated on the recommended design irrigation rate and irrigation area is

suitable to receive 0.35ML per day. It is therefore estimated the entire dewatering process for

the combined 2.66ML of water will take approximately 8 days to complete. It is important to

note these calculations are based on estimates and modifications to the irrigation area and

actual water volume will impact the actual dewatering process.

It is acknowledged that the application rates during dam dewatering processes will be varied

on-site on a regular basis depending on current climatic conditions and observed rates of

infiltration rather than the design rates. Daily inspection of the irrigation process will be key in

ensuring appropriate application rates are obtained.

Key milestones in the dewatering process are:

Approval of the Dam Dewater and Sediment Assessment Rpeort;

Commencement of application of dam water to land;

Ongoing assessment of water quality being discharged;

Final water removal from dam; and

Excavation and inspection of dam sediments with sampling of materials for beneficial

reuse on-site if contamination is suspected.

dam water and sediment assessment - city of blacktown · 2019. 8. 14. · (lor), but below the...

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