Monthly Environmental Monitoring Report - Mach...
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Mount Pleasant MACH Energy Australia Pty. Limited 19-Jan-2017
Commercial-in-Confidence
Monthly Environmental Monitoring Report Mount Pleasant Project - December 2016
AECOM
Mount Pleasant Monthly Environmental Monitoring Report Commercial-in-Confidence
K:\60521257\8. Issued Docs\8.1 Reports\2016\2016-12. Dec\MTP_Monthly Report_1216_Jan17.docx Revision 1 – 19-Jan-2017 Prepared for – MACH Energy Australia Pty. Limited – ABN: 34608495441
Monthly Environmental Monitoring Report Mount Pleasant Project - December 2016
Client: MACH Energy Australia Pty. Limited ABN: 34608495441
Prepared by AECOM Australia Pty Ltd St Patrick's Commercial Centre, Queens Street, Singleton NSW 2330, Australia T +61 2 6575 9000 F +61 2 6575 9099 www.aecom.com ABN 20 093 846 925
19-Jan-2017
Job No.: 60521257
AECOM in Australia and New Zealand is certified to ISO9001, ISO14001 AS/NZS4801 and OHSAS18001.
© AECOM Australia Pty Ltd (AECOM). All rights reserved.
AECOM has prepared this document for the sole use of the Client and for a specific purpose, each as expressly stated in the document. No other party should rely on this document without the prior written consent of AECOM. AECOM undertakes no duty, nor accepts any responsibility, to any third party who may rely upon or use this document. This document has been prepared based on the Client’s description of its requirements and AECOM’s experience, having regard to assumptions that AECOM can reasonably be expected to make in accordance with sound professional principles. AECOM may also have relied upon information provided by the Client and other third parties to prepare this document, some of which may not have been verified. Subject to the above conditions, this document may be transmitted, reproduced or disseminated only in its entirety.
AECOM Mount Pleasant Monthly Environmental Monitoring Report Commercial-in-Confidence
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Quality Information Document Monthly Environmental Monitoring Report
Ref 60521257
Date 19-Jan-2017
Prepared by Chris Burns
Reviewed by Paul Wenta
Revision History
Name/Position Signature
19 Jan 17 Paul Wenta Principal Scientist - Air Quality
AECOM
Mount Pleasant Monthly Environmental Monitoring Report Commercial-in-Confidence
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Table of Contents Executive Summary i 1.0 Introduction 1 2.0 Dust Deposition 2
2.1 Methodology 2 2.2 Assessment Criteria 2 2.3 Results 2 2.4 Discussion 7
3.0 Surface Water Quality 8 3.1 Methodology 8 3.2 Assessment Criteria 8 3.3 Results 9 3.4 Discussion 11
4.0 Groundwater Quality 12 4.1 Methodology 12 4.2 Assessment Criteria 13
Appendix A Dust Deposition - Analytical Report, Field Sheets and Chain of Custody Documentation A
Appendix B Surface Water - Analytical Report, Field Sheets and Chain of Custody Documentation B
Appendix C Groundwater - Analytical Report, Field Sheets and Chain of Custody Documentation C
List of Tables
Table 1 MTP Monitoring Summary i Table 2 MTP Monthly Depositional Dust Summary 2 Table 3 Monthly Dust Deposition Gauge Sampling Results 3 Table 4 Field Notes for Contaminated Dust Gauges 7 Table 5 MTP Monthly Surface Water Monitoring Summary 8 Table 6 Monthly Surface Water Monitoring Results- December 2016 9 Table 7 MTP Quarterly Groundwater Summary 12
List of Figures
Figure 1 MTP DDG Total Insoluble Solids Monitoring Results – December 2016 4 Figure 2 Depositional Dust Contours – December 2016 5 Figure 3 Depositional Dust Contours – Rolling Annual Average, December 2016 6 Figure 4 Mt Pleasant Surface Water pH 10 Figure 5 Mt Pleasant Surface Water EC 10 Figure 6 Mt Pleasant Surface Water TSS 11
AECOM
Mount Pleasant Monthly Environmental Monitoring Report Commercial-in-Confidence
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i
Executive Summary Environmental monitoring is conducted in the vicinity of the Mount Pleasant Operation (MPO) through routine and event based sampling of local air, soil and water. The monitoring aims to collect data on local environmental parameters, and assess this background data in relation to construction activities and future mining activities. All environmental monitoring was performed by AECOM.
A summary of the monitoring results for December 2016, assessed against adopted criteria, is provided in Table 1. Table 1 MTP Monitoring Summary
Sampling Activity Sites Date(s)
performed
Acc
epta
ble
Exce
edan
ce
Comments
Ambient Air Quality Monitoring
Dust deposition D1, D3 – D14
20 December 2016
X Exceedance of insoluble solids
annual rolling average at D7.
Surface Water Quality Monitoring
Monthly W2, W4, W5, W7, W8, W9 & W10
20 December 2016
X
Groundwater Quality Monitoring Quarterly WRA1L; WRA1U;
WRA2L; WRA2U; WRA3L; WRA3U; WRA5L; WRA5U; WRA6L; WRA6U; MPBH1; MPBH2; MPBH3; 3500B500 (L); 3500B500 (S); 3500C500 (L); 3500C500 (S); 4500F000; 5000D000 (S); 5500D000; 6000C000 (L); 6000C000 (S); 6500F500L; 6500F500U; 6500F500M; 7000D000U; 7000D000L; and 7500F000.
Non Sampling Month
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1.0 Introduction Environmental monitoring is conducted in the vicinity of the Mount Pleasant Operation (MPO) through routine sampling of surface water, ground water and depositional dust. The purpose of the monitoring regime is to demonstrate compliance with Australia and New Zealand Environmental Conservation Council (ANZECC) guidelines and Office of Environment and Heritage (OEH) impact assessment criteria.
This report presents the results from the environmental monitoring program conducted at MPO during December 2016, which consisted of monitoring of:
Monthly depositional dust; and
Monthly surface water quality.
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2.0 Dust Deposition
2.1 Methodology Dust deposition was monitored according to the OEH’s Approved Methods for the Sampling and Analysis of Air Pollutants in New South Wales (DEC 2007), which references AS/NZS 3580.10.1:2003 (R2014) Determination of particulate matter – Deposited matter – Gravimetric Method. The monitoring network comprises of 13 dust deposition gauges (DDG). Details of the monitoring locations and sampling parameters are summarised in Table 2. The DDG samples were analysed for insoluble solids and ash residue; ash residue indicated the presence of inorganic or non-combustible material. Table 2 MTP Monthly Depositional Dust Summary
Monitoring Location / ID
Insoluble Solids (g/m2/month)
Ash Content (g/m2/month)
Combustible Matter (g/m2/month)
D1 X X X
D3 X X X
D4 X X X
D5 X X X
D6 X X X
D7 X X X
D8 X X X
D9 X X X
D10 X X X
D11 X X X
D12 X X X
D13 X X X
D14 X X X
DDG samples can be contaminated by a variety of means, notably by the presence of insects and bird droppings. Results for contaminated gauges were not included in the calculation of the annual averages as this would result in skewed or misleading results for the purpose of dust deposition assessment. The Australian Standard does not provide criteria for the determination of contamination of a DDG. A gauge sample is determined by AECOM to be contaminated only after reference to field observation sheets, historical monitoring location data, laboratory notes and results, prevailing atmospheric conditions and feedback from field technicians. For example, a gauge sample with a statistically abnormally high insoluble solids result, a low ash residue result (indicating a high level of organic matter) and field notation that bird droppings or insects were present is likely to be considered contaminated.
2.2 Assessment Criteria Dust deposition is assessed against the guidelines defined in the OEH Approved Methods for the Modelling and Assessment of Air Pollutants in New South Wales (DEC 2005). The OEH specifies an impact assessment criterion of 4 g/m2.month as a maximum annual average value, which is compared to the annual average insoluble solid levels.
2.3 Results Sampling was undertaken on 20 December 2016; results are summarised in Table 3. Analytical reports, field sheets and chain of custody documentation are provided in Appendix A.
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Table 3 Monthly Dust Deposition Gauge Sampling Results
Station
Depositional Dust (g/m2.month) Ratio of
Insoluble Solids to Ash (%)
YTD Insoluble Solids (g/m2.month)
Insoluble Solids Annual Rolling Average (g/m2.month)
Insoluble Solids Ash
D1 2.8 1.2 43 1.3 1.3
D3 2.0 1.3 65 1.5 1.5
D4 2.5 1.3 52 1.5 1.5
D5 6.3c 2.2c 35 2.2 2.2
D6 2.2 1.2 55 2.3 2.3
D7 4.7c 2.4c 51 6.8 6.8
D8 2.9 2.1 72 3.7 3.7
D9 1.9 1.3 68 1.6 1.6
D10 2.2 1.1 50 1.1 1.1
D11 3.3 1.6 48 1.3 1.3
D12 0.7 0.3 43 0.7 0.7
D13 2.1 1.1 52 2.0 2.0
D14 6.3 3.6 57 3.2 3.2
Criterion - - - - 4 Results in bold indicate exceedances’ of adopted assessment criteria ‘c.’ indicates contaminated gauge. Results not included in annual average calculation.
Figure 1 compares the monthly insoluble solids results to the annual averages for each dust gauge and the assessment criterion. Figure 2 and Figure 3 display the December 2016 depositional dust contours and the annual rolling average dust contours respectively.
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Figure 1 MTP DDG Total Insoluble Solids Monitoring Results – December 2016
0
1
2
3
4
5
6
7
8
D1 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 D14
g/m
2.m
onth
Inso
lubl
e M
atte
r
MTPDust Deposition Gauge - Total Insoluble Matter
December 2016
Current Month Dust Deposition 12 Month Mean Insoluble Solids Long Term Assessment Criteria
*
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Figure 2 Depositional Dust Contours – December 2016
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Figure 3 Depositional Dust Contours – Rolling Annual Average, December 2016
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2.4 Discussion Exceedance of the OEH annual average criterion for dust deposition (insoluble solids) was recorded at site D7 (6.8g/m2. month). The gauge was contaminated in December and therefore did not contribute to the annual rolling average. Table 4 outlines the contaminated Dust gauges for December. Other field notes from the December sampling event noted that all the gauges contained insects, with some also contaminated by vegetation, bird droppings and a spider.
Table 4 Field Notes for Contaminated Dust Gauges
Site Insol
matter (g/m2,
month)
Ash
(g/m2, month)
Ash to insol
ratio (%)
Water Colour
Turbidity
Decomposing
Matter
D5 6.3 2.2 35 Green Slightly Turbid
Insects, vegetation, bird droppings
D7 4.7 2.4 51 Green Slightly Turbid
Insects, vegetation, bird droppings
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3.0 Surface Water Quality
3.1 Methodology Surface water quality is monitored on a monthly basis at nine sites. The monitoring sites and monthly sampling parameters are summarised in Table 5. Table 5 MTP Monthly Surface Water Monitoring Summary
Monitoring Location/ ID pH Electrical Conductivity
(µs/cm) Total Suspended Solids (mg/L)
W1 X X X W2 X X X W4 X X X W5 X X X W6 X X X W7 X X X W8 X X X W9 X X X W10 X X X
All surface water samples were collected and analysed in accordance with or referenced to the following documents:
NSW OEH’s Approved Methods for Sampling and Analysis of Water Pollutants in New South Wales (2004);
AS/NZS 5667.1 (1998) Water Quality – Sampling – Guidance on the Design of Sampling Programs, Sampling Techniques and the Preservation and Handling of Samples;
AS/NZS 5667.6 (1998) Water Quality – Sampling – Guidance on the Sampling of Rivers and Streams;
AS/NZS 5667.4 (1998) Guidance on sampling from lakes, natural and manmade;
NATA Accredited In-house Method Q4-AN(EV)-336 PR41 Water Sampling Rivers, Streams and Dams;
NATA Accredited In-house Method Q4AN(EV)-332-WI3 Horiba D54 Field pH Meter – Standard Checks, Calibration and Measurement, and;
NATA Accredited In-house Method Q4AN(EV)-332-WI2 Horiba Conductivity Meter – D54 Standard Solution Checks, Calibration and Measurement.
3.2 Assessment Criteria Surface waters were assessed in accordance with default trigger values for physical and chemical stressors for southeast Australia in the Australian and New Zealand Guidelines for Fresh and Marine Water Quality (ANZECC, 2000). These values are:
pH in the range of 6.5 - 8.5 (Table 3.3.2, lowland river);
Electrical conductivity (EC) in the range of 125 – 2200 µS/cm (Table 3.3.3, lowland river); and
Total suspended solids (TSS) below 50 mg/L (Table 8.2.12, Lowland River).
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3.3 Results Surface water quality monitoring was conducted on 20 December 2016. Monthly monitoring results for pH, EC and TSS are presented in Table 6 and Figure 4,
Figure 5 and Figure 6; results in bold type indicate exceedances of the adopted criteria. Analytical reports, field sheets and chain of custody documentation are presented in Appendix B. Table 6 Monthly Surface Water Monitoring Results- December 2016
Station pH Electrical
Conductivity (µs/cm)
Total Suspended Solids (mg/L)
W1 ^ ^ ^
W2 8.2 550 16
W4 7.6 1500 10
W5 * * *
W6 ^ ^ ^
W7 * * *
W8 * * *
W9 * * *
W10 * * * Criteria 6.5 – 8.5 125 - 2200 <50 Results in bold indicate exceedances of adopted assessment criteria * dry or insufficient water ^ no suitable access point
pH field measurement by In-house Method Q4AN(EV)-332-WI3. EC by In-house method Q4AN(EV)-332-WI2.
Results have been rounded in accordance with the In-house methods as stated above, original results are presented in Appendix B – Field Sheets.
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Figure 4 Mt Pleasant Surface Water pH
Figure 5 Mt Pleasant Surface Water EC
6.0
6.5
7.0
7.5
8.0
8.5
W1 W2 W3 W4 W5 W8 W9 W10
pH
Sites
Mt Pleasant Surface Water 2016 - pH
January
February
March
April
May
June
July
August
September
October
November
December
0
500
1000
1500
2000
2500
3000
W1 W2 W3 W4 W5 W8 W9 W10
EC (u
S/cm
)
Sites
Mt Pleasant Surface Water 2016 - EC
January
February
March
April
May
June
July
August
September
October
November
December
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Figure 6 Mt Pleasant Surface Water TSS
3.4 Discussion Five of the nine monitoring locations were found to be dry or had insufficient water on the sampling day. W1 and W6 were not sampled as no suitable access point was identified. All sites sampled met the adopted criteria during December 2016.
0
200
400
600
800
1000
1200
1400
1600
1800
2000
W1 W2 W3 W4 W5 W8 W9 W10
TSS
(mg/
L)
Sites
Mt Pleasant Surface Water 2016 - TSS
January
February
March
April
May
June
July
August
September
October
November
December
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4.0 Groundwater Quality
4.1 Methodology Quarterly sampling of groundwater is undertaken for pH and electrical conductivity. The groundwater sampling program is summarised in Table 7. Table 7 MTP Quarterly Groundwater Summary
Monitoring Location / ID pH Electrical Conductivity (µs/cm)
WRA6U X X
WRA6L X X
WRA5U X X
WRA5L X X
WRA4U X X
WRA4L X X
WRA3U X X
WRA3L X X
WRA2U X X
WRA2L X X
WRA1U X X
WRA1L X X
MPBH3 (Bore 2) X X
MPBH2 X X
MPBH1 (Bore3) X X
3500B500 (L) X X
3500B500 (S) X X
3500C500 (L) X X
3500C500 (S) X X
4500F000 X X
5000D000 X X
5500D000 X X
6000C000 (L) X X
6000C000 (S) X X
6500F500L X X
6500F500M X X
6500F500U X X
6500F625 X X
7000D000U X X
7000D000L X X
7500F000 X X
Bore 6500F625 could not be located. Bores WRA4L and WRA4U are no longer in place.
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Sampling was conducted in accordance with the Department of Planning and Environment document Groundwater Monitoring Guidelines for Mine Sites within the Hunter Region, as adapted from AS 5667.11 (1998) Guidance on sampling of ground waters and AS/NZS 5667.1 (1998) Water Quality – Sampling – Guidance on the Design of Sampling Programs, Sampling Techniques and the Preservation and Handling of Samples. Where monitoring bores could not be practically purged due to depth, large well volumes or slow recharge rates, water was extracted to achieve stability in field measurements before samples were extracted.
4.2 Assessment Criteria Groundwater quality will be assessed against historical baseline data. A change in standing water level of > 20 % from the previous measurement was adopted as an assessment criterion.
4.3 Results
Sampling did not occur during Decemer 2016. The next sampling event is scheduled for February 2017
AECOM
Mount Pleasant Monthly Environmental Monitoring Report Commercial-in-Confidence
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Appendix A
Dust Deposition - Analytical Report, Field
Sheets and Chain of Custody Documentation
AECOM
Mount Pleasant Monthly Environmental Monitoring Report Commercial-in-Confidence
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A-1
Appendix A Dust Deposition - Analytical Report, Field Sheets and Chain of Custody Documentation
Origin:
Description : Dust Deposition Samples Date :
Report To :
06-Jan-17
Copy to: FILE
Sample
Number
Insoluble
Matter
g/m .month
Ash
g/m .month
Page 1 of 1
Project: 60341537
Sampling : 18-Nov-16
2 2
32 Days)(20-Dec-16To
Report :
Ralph Brown
AECOM
5/11 McIntosh Drive, Mayfield West, NSW 2304
Phone 02 49677880
St Patricks Commercial Centre, Queen Street Singleton NSW 2330
Combustible
Matter
g/m .month2
DUST DEPOSITION REPORT
12710-0
D1 2.8 1.2 1.6
D3 2.0 1.3 0.7
D4 2.5 1.3 1.2
D5 6.3 2.2 4.1
D6 2.2 1.2 1.0
D7 4.7 2.4 2.3
D8 2.9 2.1 0.8
D9 1.9 1.3 0.6
D10 2.2 1.1 1.1
D11 3.3 1.6 1.7
D12 0.7 0.3 0.4
D13 2.1 1.1 1.0
D14 6.3 3.6 2.7
Reported By:__________________
Determined in Accordance With: AS3580.10.1
(Section 8 Only)
Sample Times & Funnel Dimensions supplied by client
Results expressed as a 30 day month
Accredited for compliance with
ISO/IEC 17025 - Testing
NATA Accredited Laboratory 18079
Michael Campbell
AECOM
Mount Pleasant Monthly Environmental Monitoring Report Commercial-in-Confidence
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Appendix B
Surface Water - Analytical Report, Field
Sheets and Chain of Custody Documentation
AECOM
Mount Pleasant Monthly Environmental Monitoring Report Commercial-in-Confidence
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B-1
Appendix B Surface Water - Analytical Report, Field Sheets and Chain of Custody Documentation
Description: Date: 23-Dec-16
Report to:
Sample Description TSS
mg/L
pH Conductivity
µS/cm
Sample No TDS
mg/L
Sampled
Page 1 of 1
5/11 McIntosh Drive, Mayfield West, NSW 2304
Phone: 02 49677880
Client: AECOM
Project No: 60341537
Received: 21-Dec-16
Ralph Brown
St Patricks Commercial Centre, Queen Street Singleton NSW 2330
WATER ANALYSIS REPORT
12712-0Report No.:
33492 W2 - Hunter Central Site 1620-Dec-1612:20
33493 W4 - Muscle Creek 1020-Dec-1613:45
Reported By:
Determined in accordance with:APHA Methods for Conductivity (2510 B),pH (4500-H B),TSS (2540 D) & TDS (2540 C)+
Accredited for compliance with
ISO/IEC 17025 - Testing
NATA Accredited Laboratory 18079
Michael Campbell
1. Sampled by Client 2. Recommended preservation time was exceeded for pH
Note: