Mount Thorley Warkworth
Monthly Meaningful Summary
Environment Protection Licence 1376
Environment Protection Licence 1976
Environment Protection Licence 24
March 2015
Coal & Allied Operations Pty Ltd
ABN 16 000 023 656
Lemington Road, Ravensworth via Singleton NSW 2330 Australia
PO Box 315 Singleton NSW 2330 Australia
Telephone +61 2 6570 0300 Facsimile +61 2 6570 0399
Contents
1.0 INTRODUCTION
1
2.0 AIR QUALITY
2
2.1 Depositional Dust Monitoring
2
2.1.1 Depositional Dust Results
2
2.2 Total Suspended Particulates (TSP) Monitoring
3
2.2.1 TSP Results
3
3.0 SURFACE WATER
4
3.1 Mine Water Discharge Monitoring
4
3.2 Hunter River Tributaries Monitoring
4
4.0 BLAST MONITORING
5
4.1 Blast Monitoring
5
Appendix A: Mount Thorley Warkworth Monitoring Location Plans
6
Figures
Figure 1 Mount Thorley Warkworth Environmental Monitoring Locations ............................ 7
Tables
Table 1
Table 2
Table 3
Table 4
Depositional Dust Monitoring ................................................................................... 2
Total Suspended Particulates Monitoring ................................................................. 3
Hunter River Tributaries Monitoring ........................................................................ 4
Blast Monitoring ........................................................................................................ 5
1.0 INTRODUCTION
This report has been compiled to provide a summary of environmental monitoring results for Mount Thorley Warkworth in accordance with Environment Protection Licences
1376, 1976 and 24. This report includes all monitoring data collected in accordance with the aforementioned licences for the period 1 March – 31 March 2015.
Monitoring in this report includes:

Air quality monitoring;

Surface water monitoring including mine water discharge; and

Blast monitoring.
1
2.0 AIR QUALITY
To monitor regional air quality, MTW operates and maintains a network of nine depositional dust gauges and four Total Suspended Particulate (TSP) High Volume Air Samplers
(HVAS) on private and mine owned land surrounding the mining operations. It should be noted that the Depositional Dust and Total Suspended Particulates monitoring networks
are common to MTW, and reported against both Environment Protection Licences 1376 & 1976.
2.1 Depositional Dust Monitoring
2.1.1 Depositional Dust Results
Results of Depositional Dust Monitoring (WML EPL 1376 Monitoring Point 2, Condition M2.2), (MTO EPL 1976 Monitoring Point 1, Condition M2.2) are shown in Table 1. Where
samples have been identified as contaminated, these are assessed for inclusion in annual average compliance assessment. The outcomes of annual average compliance assessment
will be reported in the Annual Review.
Table 1
Depositional Dust Monitoring
Pollutant
Unit of
Measure
No. of samples
required by licence
No. of samples collected
and analysed
Lowest
sample value
Mean of
sample
Highest
sample value
Median
Comment
Particulates –
Deposited Matter
Grams per square
metre per month
D11
g/m². month
1
1
2.5
2.5
2.5
2.5
DW14
g/m². month
1
1
3.7
3.7
3.7
3.7
Field notes indicates
contamination
DW15
g/m². month
1
1
1.7
1.7
1.7
1.7
DW20A
g/m². month
1
1
1.9
1.9
1.9
1.9
-
DW21A
g/m². month
1
1
3.2
3.2
3.2
3.2
-
D122
g/m². month
1
1
6.0
6.0
6.0
6.0
D124
g/m². month
1
1
3.8
3.8
3.8
3.8
D125
g/m². month
1
1
1.3
1.3
1.3
1.3
Warkworth
g/m². month
1
1
4.2
4.2
4.2
4.2
Field notes indicates
contamination
Field notes indicates
contamination
Field notes indicates
contamination
2
2.2 Total Suspended Particulates (TSP) Monitoring
2.2.1 TSP Results
Results of Total Suspended Particulates (TSP) monitoring (EPA Monitoring Point 2, Condition M2.2) are shown in Table 2.
Table 2
Total Suspended Particulates Monitoring
Pollutant
Unit of
Measure
No. of samples
required by licence
No. of samples
collected and analysed
Lowest sample
value
Mean of
sample
Highest
sample value
Median
Total Suspended Particulates
Micrograms per
cubic metre
Loders Crk TSP
µg/m³
5
5
34
73
110
80
MTO TSP - 1
µg/m³
5
5
34
61
85
58
WML – TSP
µg/m³
5
5
29
55
83
52
Warkworth TSP (Lem HV1 TSP)
µg/m³
5
5
51
79
110
78
Long Point TSP
µg/m³
5
4*
90
148
247
128
*A full run not able to be completed due to a power failure at Long Point on 30/03/2015
3
3.0 SURFACE WATER
3.1 Mine Water Discharge Monitoring
MTW participates in the Hunter River Salinity Trading Scheme (HRSTS), and maintains two monitoring locations associated with this scheme as follows:

EPA Monitoring Point 1 (WML EPL 1376) – Dam 1N Discharge Point

EPA Monitoring Point 4 (MTO EPL 1976) – The end of the discharge pipe from Dam 9
During the reporting period Mount Thorley Warkworth did not discharge any mine water under the HRSTS.
3.2 Hunter River Tributaries Monitoring
MTW undertakes routine monitoring in Loders Creek, in accordance with Condition M2.3, at the following location:

EPA Monitoring Point 3 (MTO EPL 1976) – In Loders Creek, at the coal preparation plant access road bridge
The location of these sampling points can be found in Appendix A – MTW Monitoring Locations Plan.
Result of monitoring undertaken from W5 – Loders Creek is detailed in Table 3
Table 3
Hunter River Tributaries Monitoring
Loders Creek / EPL Point 3
Pollutant
unit of measure
No. of samples
required by
licence
No. of samples
you collected
and analysed
Lowest
sample
value
Mean
of
sample
Highest
sample
value
Median
Conductivity
microsiemens per centimetre
1
1
13070
13070
13070
13070
pH
pH
1
1
8.0
8.0
8.0
8.0
Total Suspended Solids
milligrams per litre
1
1
16
16
16
16
4
4.0 BLAST MONITORING
4.1 Blast Monitoring
In accordance with the requirements of Conditions M8.1 (MTO 1976) and M7.1 (WML 1376), Mount Thorley Warkworth maintains a network of blast monitors to measure airblast
overpressure and ground vibration for all blasts carried out at MTW. The location of these monitors can be found in Appendix A – Mount Thorley Warkworth Environmental
Monitoring Locations. It should be noted that the blast monitoring network is to MTW, and reported against both Environment Protection Licences 1376 & 1976.
Blast monitoring results are detailed in Table 4.
Compliance Summary:
During the reporting period no blasts exceeded the 115 dB(L) threshold for airblast overpressure or the 5mm/s threshold for ground vibration.
Detailed blast results may be viewed in Obtained Data Report for March 2015.
Table 4
Blast Monitoring
Unit of
No. of samples
No. of samples
lowest sample mean of
Pollutant
Measure
required by licence
collected and analysed
value
sample
highest sample
value
Median
Abbey Green
dB(L)
42
42
78.60
94.6
111.5
91.8
Bulga Village
dB(L)
42
42
75.30
91.7
106.0
91.8
Wambo Road
dB(L)
42
42
75.50
89.9
101.9
89.2
dB(L)
42
42
79.50
96.8
109.0
97.3
South Bulga
dB(L)
42
42
73.90
90.1
105.8
89.5
Warkworth
Wollemi Peak
Road
Abbey Green
dB(L)
42
42
80.20
90.2
103.4
90.2
dB(L)
42
42
78.40
90.9
107.0
90.0
mm/s
42
42
0.00
0.03
0.12
0.03
Bulga Village
mm/s
42
42
0.01
0.56
1.84
0.53
mm/s
42
42
0.00
0.31
0.92
0.27
mm/s
42
42
0.02
0.12
0.54
0.11
mm/s
42
42
0.01
0.23
0.75
0.22
mm/s
42
42
0.01
0.40
1.41
0.37
mm/s
42
42
0.00
0.48
1.37
0.47
Putty Rd MTIE
Airblast
Overpressure
Wambo Road
Putty Rd MTIE
South Bulga
Warkworth
Wollemi Peak
Road
Ground
Vibration
5
Appendix A: Mount Thorley Warkworth Monitoring Location Plans
6
Figure 1 Mount Thorley Warkworth Environmental Monitoring Locations
7