WAMBO COAL PTY LIMITED
MONTHLY ENVIRONMENTAL MONITORING REPORT
December 2014
Page | 1
Table of Contents
1.0 INTRODUCTION ........................................................................................................... 3
2.0 METEOROLOGICAL DATA ......................................................................................... 3 2.1. Rainfall ....................................................................................................................... 3 2.2. Wind ........................................................................................................................... 4
3.0 SURFACE WATER SAMPLING ................................................................................... 4 3.1. Hunter River Salinity Trading Scheme (HRSTS) ....................................................... 5
4.0 GROUNDWATER SAMPLING ..................................................................................... 5
5.0 DEPOSITIONAL DUST SAMPLING ............................................................................. 6
6.0 HIGH VOLUME AIR SAMPLING .................................................................................. 8
7.0 BLAST EVENTS ......................................................................................................... 10
8.0 NOISE MONITORING ................................................................................................. 12 8.1. Attended Monitoring ................................................................................................. 12 8.2. Real Time Monitoring ............................................................................................... 12
9.0 REAL-TIME AIR QUALITY MONITORING ................................................................. 12
10.0 COMMUNITY COMPLAINTS ...................................................................................... 14
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Tables
Table 1 - Monthly Surface Water Results – December 2014 .................................................... 4
Table 2 - Ground Water Results – December 2014 .................................................................. 5
Table 3 - Dust Deposition Results – December 2014 ............................................................... 7
Table 4 - HVAS Results – December 2014 ............................................................................... 8
Table 5 - Blasting Criteria Limits .............................................................................................. 10
Table 6 - Blast Results – December 2014 ............................................................................... 11
Table 7 - PM10 Results – December 2014 ............................................................................. 13
Figures
Figure 1 - Monthly and Cumulative Rainfall............................................................................... 3
Figure 2 - Deposition Dust Gauge Results – December 2014 .................................................. 7
Figure 3 - HVAS YTD Annual Average – December 2014 ........................................................ 9
Figure 4 - 24 Hour Average PM10 Results – December 2014 ................................................. 14
Appendix A Meteorological Data
Appendix B Surface Water Graphs
Page | 3
1.0 Introduction
This report presents environmental monitoring results for the reporting period
Monday 1st December to Wednesday 31st December 2014. Monitoring during this
period includes meteorological measurement, surface and ground water sampling,
depositional dust sampling, High Volume Air Sampling, blasting events and PM10 real
time air monitoring results.
2.0 Meteorological Data
2.1. Rainfall
Approximately 148.6mm of rain was received during December. Year to date rainfall
in comparison to 2013 results are shown in Figure 1.
Figure 1 - Monthly and Cumulative Rainfall
Page | 4
2.2. Wind
Results for reporting period are available in Appendix A.
3.0 Surface Water Sampling
Surface water samples are collected in accordance with AS/NZS 5667.4:1998 –
Guidance on sampling from lakes, natural and man-made and AS/NZS
5667.6:1998 – Guidance on sampling of rivers and streams. All samples
collected were analysed in the field for pH, electrical conductivity (EC) and
temperature. Selected sites were analysed in a NATA* accredited laboratory for total
suspended solids (TSS) and total dissolved solids (TDS).
*National Association of Testing Authorities - NATA is the authority that provides independent assurance of
technical competence.
Historical trend charts for SW15 (Eagles Nest Dam – Discharge Point) and SW01,
SW40 and SW02 (Wollombi Brook Upstream and Downstream locations) are
available in Appendix B.
December results are detailed below in Table 1.
Table 1 - Monthly Surface Water Results – December 2014
Sample Location pH EC
(µS/cm) TSS
(mg/L) TDS
(mg/L)
Oil & Grease (mg/L)
Temp (oC)
Comments
WOLLOMBI BROOK
SW01 - Wollombi Brook Up 7.50 638 10 270 - 28.3 -
SW03 - Wollombi Brook Pump Out 7.20 975 13 481 <2 25.8 -
SW02 - Wollombi Brook Down 7.50 995 6 470 <2 28.4 -
SW40 - Confluence with SWC 7.60 641 4 342 - 27.7 -
NORTH WAMBO CREEK
SW04 - North Wambo Creek Up - - - - - - Dry
SW27a - North Wambo Creek Middle Lower
7.90 394 860 1,090 - 22.8 -
SW32a - North Wambo Creek Pump 7.80 454 2,940 1,050 - - Dry
SW05 - North Wambo Creek Down 7.20 516 266 510 - 22.5 -
SOUTH WAMBO/STONY CREEK
SW06 - South Wambo Creek 7.40 514 17 239 - - -
SW07 - South Wambo/Stony Creek 7.30 394 122 214 - - -
SW08 - Stony Creek - - - - - - Dry
LONGFORD/DOCTOR’S CREEKS
SW43 - Longford Creek Up 7.80 463 235 414 <2 - -
SW44 - Longford Creek Down - - - - - - Dry
SW46 - Doctors Creek Up - - - - - - Dry
SW45 - Doctors Creek Down - - - - - - Dry
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Sample Location pH EC
(µS/cm) TSS
(mg/L) TDS
(mg/L)
Oil & Grease (mg/L)
Temp (oC)
Comments
WATERFALL CREEK
SW39 - Waterfall Creek Midstream 7.50 201 925 605 - - -
MINE WATER DAMS
SW11 - West Cut Dam Pipe Not Pumping -
SW12 - West Cut Dam 9.00 4,120 - - - 24.8 -
SW14 - Box Cut Dam (Admin) 8.30 609 - - - 25.5 -
SW15 - Eagles Nest Dam 8.90 7,220 84.00 4,750 <2 25.9 -
SW20 - Dam Adjacent to West Cut Dam
8.10 740 - - - 23.2 -
SW29 - SCB Dam - - - - - - No Access
SW30 - Turkeys Nest - - - - - - No Access
SW31 - Gordon Below Franklin 9.30 4,570 - - - 24.8
SW37 - Wollemi Sump - - - - - - No longer exists
SW38 - Homestead Open Cut 8.70 6,220 - - - 22.2 -
SW47 - NWU Pumpout Water - - - - - - No longer exists
SW48 - Inpit sample - - - - - - No longer exists
SW49 - Bates Pit Pumpout - - - - - - No access
SW51 - South Dam - - - - - - Decommissioned
SW50 - Hunter River Water Not Pumping -
Note: Figures in bold fall outside trigger levels.
3.1. Hunter River Salinity Trading Scheme (HRSTS)
During the reporting period no water was discharge under the HRSTS.
4.0 Groundwater Sampling
Groundwater results are collected on a bi-monthly basis. Results for December are
detailed below:
Table 2 - Ground Water Results – December 2014
Sample Location pH EC
(S/cm)
Depth to Water (m)
Temp (oC)
Comments
GW02 7.00 494 7.40 19.5 -
GW11 7.10 550 5.61 18.9 -
P106 - - 9.76 - Insufficient water to
sample
P109 6.70 694 5.79 17.4 -
P110 6.40 780 5.55 17.9 -
P111 7.00 720 6.94 18.7 -
P114 6.50 6,640 6.00 19.0 -
P116 7.30 1,486 6.33 19.1 -
P202 6.90 10,520 8.80 18.9 -
P206 7.40 2,150 16.98 19.7 -
P301 6.50 5,360 15.33 19.8 -
P315 6.30 320 7.63 19.4 -
GW12 - - 12.83 - Insufficient water to
sample
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Sample Location pH EC
(S/cm)
Depth to Water (m)
Temp (oC)
Comments
GW13 7.00 3,740 5.51 19.3 -
GW14 - - - - Dry
GW15 6.90 610 11.10 20.5 -
GW16 7.40 824 9.40 18.9 -
GW17 7.00 5,300 11.58 19.6 -
GW18 - - - - Dry
GW19 - - - - Dry
GW20 GW20 is a vibration wire multi-piezometer installation
GW21 - - 36.57 - Insufficient water to
sample
GW22 8.30 6,780 35.74 22.0 -
P1* 6.71 7,420 25.47 - -
P3* - - - - -
P5* - - - - Removed from
monitoring
P6* - - - - -
P11* - - - - Dry
P12* 7.24 868 7.18 - -
P13* 6.28 1,115 7.48 - -
P15* 7.77 6,640 6.69 - -
P16* 7.28 7,510 7.62 - -
P17* 7.42 8,470 9.51 - -
P18* 7.36 7,460 7.66 - -
P20* 7.27 9,150 8.01 - -
Note: All depths measured to top of casing, except United bores which are to ground. Figures in bold are outside trigger levels listed in Table 5 of the Ground Water Monitoring Programme (GWMP), which is part of the Site Water Management Plan. * Represents data that is provided on a quarterly basis. The results are to be updated once available.
5.0 Depositional Dust Sampling
Fifteen depositional dust gauges were collected for the reporting period. Sampling
and analysis is conducted in accordance with AS 3580.10.1 – 1991 – Determination
of particulates – Deposited matter – Gravimetric method. All gauges were
analysed for insoluble solids (IS) and ash residue (AS). Field observations include
water quantity and quality, and any visible contaminants in the sample.
Insoluble solid results are reported on the annual average of 4g/m2/month of all
uncontaminated results which are not located on Wambo Coal owned land. No
depositional dust gauge locations were outside the prescribed criteria level for the
reporting period.
December results are presented in Table 3 and Figure 2 below.
Page | 7
Table 3 - Dust Deposition Results – December 2014
Site Insoluble Solids (IS) (g/m
2.month)
Ash Residue (AR) (g/m
2.month)
IS:AR Ratio
IS YTD Average (g/m
2.month)
AR YTD Average
(g/m2.month)
D01* 4.7 1.9 40 2.9 2.0 D03 3.7 2.5 68 3.0 2.1 D07* 10.2 4.4 43 6.0 3.4 D09* 5.3 3.3 62 2.0 1.6
# D11* 22.6 4.0 18 2.5 1.5 # D12 6.7 2.5 37 3.3 2.2 # D17 2.5 1.8 72 1.8 1.1
D19 4.4 2.9 66 3.0 1.8 D20 3.1 2.0 65 1.8 1.3
# D21 2.90 2.10 72 1.9 1.4
# D22 2.5 1.9 76 2.2 1.6 D23 2.0 1.3 65 2.1 1.3
# D24 1.3 1.0 77 1.4 0.9 # D25 3.80 2.80 74 2.8 2.0 D26 2.5 1.5 60 2.1 1.4
Note: Results in bold are YTD average above 4g/m
2/month
Results # are dust gauges not on WCPL owned land. DD gauges on Wambo Coal land and above criteria level are not considered non-compliance. * Contaminated sample
Figure 2 - Deposition Dust Gauge Results – December 2014
Page | 8
Note: * Monthly sample contaminated by bird droppings, vegetation, insects. # Depositional dust gauges not located on WCPL owned land. Results above criteria at these locations not considered non-compliances.
6.0 High Volume Air Sampling
Four High Volume Air Samplers (HVAS) operate at locations surrounding Wambo.
All units sampled Total Suspended Particulates (TSP) over a 24-hour period on a six
day cycle, in accordance with AS 2724.3 – 1984 – Determination of total
suspended particulates (TSP) – High volume sampler gravimetric method.
Reported yearly means for locations are within the reporting criteria of 90g/m3.
December results are presented in Table 4 and Figure 3 below.
Table 4 - HVAS Results – December 2014
Date of Run
HV01 - Coralie
TSP (g/m3)
HV02 - Caban
TSP (g/m3)
HV03 - Thelander
TSP (g/m3)
HV04 - Muller
TSP (g/m3)
6/12/2014 46.4 41.6 33.8 40
12/12/2014 77.9 36.9 45.4 65.1
18/12/2014 122 106 95.9 110
24/12/2014 70.6 43.9 41.4 47.8
30/12/2014 99.6 66.5 49.8 55.4 Monthly Mean 83.30 58.98 53.26 63.66 Yearly Mean 66.6 68.1 48.3 62.3
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Figure 3 - HVAS YTD Annual Average – December 2014
Page | 10
7.0 Blast Events
Four monitoring sites measure ground vibration and air blast overpressure for blasts
conducted at Wambo. Five blasts were conducted during the reporting period.
Monitoring at all four sites is conducted under the blast monitoring requirements set
out in the Wambo EPA licence (EPL 529) and DA 305-7-2003. The blasting criteria
are summarised in Table 5 below.
Table 5 - Blasting Criteria Limits
Airblast Overpressure (dB(L)) Allowable exceedance
115 5% of the total number of blasts over a period of 12 months
120 0%
Ground Vibration (mm/s) Allowable exceedance
5 5% of the total number of blasts over a period of 12 months
10 0%
All measured blast events for December 2014 were within the prescribed criteria
limits. Blast results are presented in Table 6 below.
Page | 11
Table 6 - Blast Results – December 2014
Date Time Location
Kelly Residence – A0728 Wambo Homestead – A0722 Harris Site – A6006 Muller Residence – A6005
Over Pressure (dB(L))
Vibration (mm/s)
Wave-form
Over Pressure (dB(L))
Vibration (mm/s)
Wave-form
Over Pressure (dB(L))
Vibration (mm/s)
Wave-form
Over Pressure (dB(L))
Vibration (mm/s)
Wave-form
1/12/2014 14:41:01 M21WWA2 107.6 0.18 YES NRR 108.1 0.09 YES 103.4 0.57 YES
11/12/2014 13:12:33 M15WRC5 102 0.25 YES 97.1 0.26 YES 103.5 0.30 YES 108.4 0.21 YES
16/12/2014 15:32:50 BS5WTA3 99.2 0.18 YES 93.1 0.36 YES 106.5 0.23 YES 99.4 0.09 YES
18/12/2014 15:33:15 M15WRCa 101.6 0.06 YES 94 0.26 YES 97.5 0.1 YES 100.3 0.13 YES
23/12/2014 14:34:11 M21WWA3 97.3 0.09 YES NRR 104 0.22 YES 104.3 0.75 YES
Date Time Location
Thelander Residence – A8047
Over Pressure (dB(L))
Vibration (mm/s)
Wave-form
1/12/2014 14:41:01 M21WWA2 106.9 0.58 YES
11/12/2014 13:12:33 M15WRC5 107.5 0.4 YES
16/12/2014 15:32:50 BS5WTA3 98.4 0.13 YES
18/12/2014 15:33:15 M15WRCa 99.8 0.13 YES
23/12/2014 14:34:11 M21WWA3 106.9 1.28 YES
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8.0 Noise Monitoring
8.1. Attended Monitoring
Attended noise monitoring is undertaken on a monthly basis and occurred during the
month of December. Monitoring results can be found on the Peabody Wambo website at
www.peabodyenergy.com/content/404/Australia-Mining-New/New-South-Wales/Wambo-
Mine.
8.2. Real Time Monitoring
Real time noise monitoring results are reported in a quarterly format and can be found
on the Peabody Wambo website at www.peabodyenergy.com/content/404/Australia-
Mining-New/New-South-Wales/Wambo-Mine.
9.0 Real-Time Air Quality Monitoring
Four real time Tapered Element Oscillating Microbalance (TEOM) units were in
operation during the reporting period. The sites are located at Coralie (PM01), the
Caban residence (PM02), Thelander residence (PM03) and the Muller residence
(PM04). These units measure particulate matter less than 10 microns in diameter
(PM10) on a continuous basis and provide a 24 hour average result. These units
operated and sampled in accordance with AS 3580.9.8 - 2002, Method for Sampling
and Analysis of Ambient Air - Determination of Suspended Particulate Matter -
PM10 Continuous Direct Mass Method using a Tapered Element Oscillating
Microbalance Analyser.
December results are presented in Table 7 and Figure 4 below.
All PM10 sites were within the yearly average criteria limits of 30ug/m3. A single
exceedance of the 24hr average criteria of 50ug/m3 for a single day was recorded at
PM01 on the 17th December.
Page | 13
Table 7 - PM10 Results – December 2014
Date of Run
PM01 (Coralie) PM02 (Wambo Road) PM03 (Thelander) PM04 (Muller)
PM10 24 Hour Result (ug/m
3)
YTD Average
PM10 24 Hour
Result (ug/m
3)
YTD Average
PM10 24 Hour Result (ug/m
3)
YTD Average
PM10 24 Hour Result (ug/m
3)
YTD Average
1/12/2014 12.4 17.5 11.4 19.1 8.7 15.1 10.2 17.6
2/12/2014 18.8 17.5 16.1 19.1 12.0 15.1 18.4 17.6
3/12/2014 19.2 17.5 17.3 19.1 14.2 15.1 22.1 17.6
4/12/2014 14.6 17.5 12.9 19.0 9.1 15.1 10.7 17.6
5/12/2014 12.5 17.5 14.1 19.0 8.9 15.1 9.9 17.6
6/12/2014 11.7 17.4 10.3 19.0 8.5 15.1 9.6 17.6
7/12/2014 11.8 17.4 9.4 19.0 7.2 15.1 10.3 17.5
8/12/2014 17.8 17.4 11.7 18.9 9.2 15.0 12.0 17.5
9/12/2014 31.3 17.5 21.7 19.0 23.2 15.1 21.3 17.5
10/12/2014 30.1 17.5 19.1 19.0 20.2 15.1 20.6 17.5
11/12/2014 7.6 17.5 6.4 18.9 5.6 15.1 4.8 17.5
12/12/2014 20.3 17.5 12.5 18.9 12.8 15.0 16.2 17.5
13/12/2014 24.8 17.5 14.1 18.9 15.8 15.0 15.5 17.5
14/12/2014 24.2 17.5 19.1 18.9 20.2 15.1 26.0 17.5
15/12/2014 32.9 17.6 19.8 18.9 19.5 15.1 28.1 17.5
16/12/2014 25.0 17.6 33.7 18.9 22.0 15.1 29.8 17.6
17/12/2014 50.2 17.7 46.4 19.0 37.9 15.2 35.6 17.6
18/12/2014 37.0 17.7 34.7 19.1 30.8 15.2 31.6 17.7
19/12/2014 33.6 17.8 27.8 19.1 25.8 15.2 25.5 17.7
20/12/2014 21.7 17.8 32.3 19.1 20.5 15.3 23.5 17.7
21/12/2014 23.7 17.8 18.0 19.1 19.2 15.3 24.1 17.7
22/12/2014 26.7 17.8 19.5 19.1 21.3 15.3 28.2 17.8
23/12/2014 20.0 17.8 14.0 19.1 13.2 15.3 14.2 17.7
24/12/2014 21.7 17.9 16.6 19.1 13.9 15.3 16.9 17.7
25/12/2014 11.8 17.8 11.8 19.1 12.1 15.3 13.3 17.7
26/12/2014 25.5 17.9 11.8 19.1 10.0 15.2 11.3 17.7
27/12/2014 27.0 17.9 20.1 19.1 19.7 15.3 19.8 17.7
28/12/2014 16.7 17.9 8.8 19.0 8.8 15.2 9.5 17.7
29/12/2014 17.6 17.9 7.4 19.0 5.7 15.2 6.9 17.7
30/12/2014 39.9 17.9 25.8 19.0 18.4 15.2 19.1 17.7
31/12/2014 46.3 18.0 27.4 19.0 25.8 15.3 27.6 17.7
Note: Results in red are greater that the 24hr period guidelines of 50ug/m
3
Results in bold are between 30ug/m3 and 50ug/m
3
NRR – No Result Recorded as monitor offline.
Page | 14
Figure 4 - 24 Hour Average PM10 Results – December 2014
10.0 Community Complaints
During the reporting period nil complaints were received. Thirty one complaints have
been received year to date, compared to twenty eight during the same reporting period
in 2013.
Details of the community complaints are available on the Peabody Wambo website at
www.peabodyenergy.com/content/422/Australia-Mining/New-South-Wales/Wambo-
Mine/Approvals-Plans-and-Reports-Wambo-Mine.
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Appendix A
Wambo Weather Station
Meteorological Data
Page | 16
Meteorological Data December 2014
Date
Temperature (2m) Temperature (10m) Temperature Inversion Humidity Solar Radiation Rain Wind Speed
Min Avg Max Min Avg Max Min Avg Max Min Avg Max Min Avg Max mm Min Avg Max
01/12/14 18.4 23.6 34.3 19.0 24.0 33.3 -13.8 4.6 23.9 32.0 71.0 95.9 -1.7 205.4 1081.7 2.3 0.0 1.8 6.4
02/12/14 19.3 26.9 36.5 20.1 27.2 35.8 -10.5 4.5 25.7 26.4 59.8 94.2 -1.7 301.8 995.6 7.4 0.0 2.0 6.3
03/12/14 19.7 27.4 38.3 21.0 27.9 38.0 -9.7 6.3 25.3 22.1 60.6 91.8 -1.7 252.3 1053.5 0.2 0.0 2.3 7.5
04/12/14 20.3 24.6 31.1 20.9 25.1 31.1 -4.3 5.5 17.5 47.1 74.5 95.3 -1.7 110.1 553.9 2.6 0.0 2.2 7.8
05/12/14 17.9 25.1 34.8 18.4 25.3 34.4 -12.7 3.0 15.9 27.8 64.3 95.3 -1.7 282.3 1042.6 29.6 0.0 3.2 8.6
06/12/14 17.2 21.0 27.2 18.0 21.4 27.3 -5.9 4.8 12.8 53.8 83.5 95.5 -1.7 128.1 1169.6 14.1 0.1 1.5 7.9
07/12/14 17.7 24.2 34.9 18.6 24.6 34.3 -8.5 4.7 18.2 30.8 72.7 95.6 -1.7 282.0 1049.2 0.2 0.0 1.8 4.7
08/12/14 18.3 24.3 32.2 19.2 24.7 31.9 -12.8 5.9 24.8 41.0 73.1 94.9 -1.7 212.2 1113.1 5.6 0.0 1.6 7.3
09/12/14 20.4 23.7 30.0 21.4 24.0 29.6 -5.9 4.5 18.7 52.7 71.5 88.1 -1.7 244.9 1052.6 0.0 0.1 2.8 7.1
10/12/14 20.2 23.2 32.1 20.7 23.5 31.9 -7.7 4.1 9.6 47.2 76.6 96.1 -1.7 199.5 1078.2 26.6 0.2 2.0 7.9
11/12/14 16.3 20.8 26.0 16.9 21.3 26.2 -3.2 5.3 9.5 63.1 84.6 96.7 -1.8 89.4 711.7 17.1 0.1 2.4 7.9
12/12/14 16.2 19.1 23.3 16.8 19.4 23.2 -2.6 4.3 8.7 44.2 65.6 92.6 -1.8 222.2 1029.4 0.0 1.0 4.0 7.8
13/12/14 14.9 18.9 23.1 16.0 19.3 22.8 -4.3 5.2 24.8 48.2 68.3 88.4 -1.8 198.9 866.0 0.2 0.1 3.3 6.8
14/12/14 12.5 20.6 29.2 13.9 21.1 28.0 -15.1 5.9 24.7 32.2 63.3 95.1 -1.8 349.0 1100.2 0.0 0.0 1.4 4.8
15/12/14 14.3 22.3 29.3 15.3 22.9 29.2 -4.1 7.1 23.8 40.9 63.9 93.8 -1.8 341.6 980.2 0.0 0.0 1.9 5.6
16/12/14 14.1 23.1 30.9 15.2 23.7 31.2 -5.7 7.3 21.2 41.9 64.1 93.7 -1.8 203.7 1111.7 0.0 0.0 2.0 7.1
17/12/14 20.1 25.1 30.6 20.6 25.4 30.6 -6.5 3.8 12.8 36.7 53.1 67.2 -1.7 329.1 953.5 0.0 0.1 4.8 8.3
18/12/14 18.9 23.7 29.8 20.0 24.1 29.5 -9.5 4.9 28.6 32.4 63.4 81.8 -1.7 174.2 872.8 0.0 0.1 1.9 4.9
19/12/14 13.9 21.2 27.1 16.0 22.0 26.8 -7.2 10.3 52.0 34.9 61.3 93.0 -1.8 333.6 1040.4 0.0 0.0 2.9 7.0
20/12/14 16.9 21.1 26.9 17.5 21.4 26.6 -4.7 3.8 12.2 44.6 60.2 75.0 -1.8 245.0 1129.2 0.0 0.5 2.4 7.2
21/12/14 14.3 23.1 32.2 15.7 23.6 31.8 -11.7 6.4 20.3 27.0 62.8 90.9 -1.8 349.3 980.0 0.0 0.1 1.9 6.2
22/12/14 17.4 24.9 33.2 18.4 25.4 33.3 -5.0 6.0 18.6 27.0 64.9 93.5 -1.7 296.8 1054.1 0.0 0.0 2.2 7.4
23/12/14 19.3 23.1 28.5 19.9 23.5 28.4 -9.4 5.4 12.7 56.6 79.2 93.7 -1.7 145.4 1121.4 3.7 0.0 1.2 2.9
24/12/14 20.6 24.4 32.7 21.2 24.8 32.5 -9.5 4.4 13.2 44.7 77.7 96.1 -1.7 233.6 1155.6 7.4 0.0 2.0 7.3
25/12/14 20.1 24.8 35.3 20.6 25.0 35.0 -9.6 2.4 9.0 32.9 76.6 96.0 -1.8 259.9 990.6 28.6 0.0 1.6 7.5
26/12/14 19.0 24.5 34.5 19.4 24.8 34.2 -6.5 3.3 8.2 22.3 71.5 96.6 -1.7 316.3 1029.0 1.1 0.0 2.9 8.4
27/12/14 17.8 19.5 21.0 18.3 19.9 21.4 1.4 5.2 7.7 62.6 70.7 87.7 -1.8 51.7 233.2 0.0 0.9 2.5 5.5
28/12/14 18.1 19.8 22.0 18.6 20.2 22.1 0.1 4.9 9.0 66.7 80.7 87.8 -1.8 106.8 471.7 0.2 0.4 2.1 5.1
29/12/14 18.2 24.5 32.5 18.8 24.8 32.6 -13.3 3.7 35.9 31.1 67.2 95.5 -1.8 290.1 1003.0 1.6 0.0 2.0 5.1
30/12/14 20.1 28.2 35.2 22.3 29.0 35.2 -3.8 9.8 42.8 12.5 38.7 80.4 -1.7 357.7 1008.6 0.0 0.0 3.6 9.4
31/12/14 16.0 22.9 28.3 18.3 23.7 28.1 -5.2 9.8 68.7 28.6 65.4 85.5 -1.8 282.4 1137.7 0.0 0.0 3.0 6.9
MONTH 12.5 23.2 38.3 13.9 23.6 38.0 -15.1 5.4 68.7 12.5 68.1 96.7 -1.8 238.6 1,169.6 148.6 0.0 2.4 9.4
Page | 17
Appendix B
Surface Water Graphs
SW 15 – Eagles Nest Dam (EPL Discharge Point)
Page | 18
SW 01 – Wollombi Brook Upstream (U/S) near Bulga Township
SW 40 – Wollombi Brook Upstream (U/S) of South Wambo Creek
SW 02 – Wollombi Brook Downstream (D/S) near Warkworth Village