WAMBO COAL PTY LIMITED

MONTHLY ENVIRONMENTAL MONITORING REPORT

January 2015

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Table of Contents

1.0 INTRODUCTION ........................................................................................................... 3

2.0 METEOROLOGICAL DATA ......................................................................................... 3 2.1. Rainfall ....................................................................................................................... 3 2.2. Wind ........................................................................................................................... 3

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 ........................................................................................................... 9

8.0 NOISE MONITORING ................................................................................................. 11 8.1. Attended Monitoring ................................................................................................. 11 8.2. Real Time Monitoring ............................................................................................... 11

9.0 REAL-TIME AIR QUALITY MONITORING ................................................................. 11

10.0 COMMUNITY COMPLAINTS ...................................................................................... 13

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Tables

Table 1 - Monthly Surface Water Results – January 2015 ........................................................ 4

Table 2 - Ground Water Results – January 2015 ...................................................................... 5

Table 3 - Dust Deposition Results – January 2015 ................................................................... 6

Table 4 - HVAS Results – January 2015 ................................................................................... 8

Table 5 - Blasting Criteria Limits ................................................................................................ 9

Table 6 - Blast Results – January 2014................................................................................... 10

Table 7 - PM10 Results – January 2015 ................................................................................. 12

Figures

Figure 1 - Monthly and Cumulative Rainfall............................................................................... 3

Figure 2 - Deposition Dust Gauge Results – January 2015 ...................................................... 7

Figure 3 - HVAS YTD Annual Average – January 2015 ............................................................ 8

Figure 4 - 24 Hour Average PM10 Results – January 2015 ..................................................... 13

Appendix A Meteorological Data

Appendix B Surface Water Graphs

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1.0 Introduction

This report presents environmental monitoring results for the reporting period

Thursday 1st January to Saturday 31st January 2015. 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 173.65 mm of rain was received during January. Year to date rainfall

in comparison to 2014 results are shown in Figure 1.

Figure 1 - Monthly and Cumulative Rainfall

2.2. Wind

Results for reporting period are available in Appendix A.

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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.

January results are detailed below in Table 1.

Table 1 - Monthly Surface Water Results – January 2015

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 7.50 609 2 322 - 24.8 -

SW03 - Wollombi Brook Pump Out 7.50 609 44 308 <2 25.2 -

SW02 - Wollombi Brook Down 7.40 638 14 300 <2 25.10 -

SW40 - Confluence with SWC 7.60 545 25 115 - 25.6 -

NORTH WAMBO CREEK

SW04 - North Wambo Creek Up - - - - - - Dry

SW27a - North Wambo Creek Middle Lower

7.90 324 355 668 - 25.5 Pool

SW32a - North Wambo Creek Pump 8.50 429 192 933 - 27.7 Pool

SW05 - North Wambo Creek Down 7.50 494 1,390 1,010 - 23 Pool

SOUTH WAMBO/STONY CREEK

SW06 - South Wambo Creek - - - - - - Dry

SW07 - South Wambo/Stony Creek - - - - - - Dry

SW08 - Stony Creek - - - - - - Dry

LONGFORD/DOCTOR’S CREEKS

SW43 - Longford Creek Up 7.40 388 292 548 <2 24.1 -

SW44 - Longford Creek Down 7.60 685 265 898 <2 23.6 -

SW46 - Doctors Creek Up 7.90 2,500 120 218 <2 24.5 -

SW45 - Doctors Creek Down 7.70 2,960 111 244 <2 24.5 -

WATERFALL CREEK

SW39 - Waterfall Creek Midstream - - 436 403 - - Pool

MINE WATER DAMS

SW11 - West Cut Dam Pipe Not Pumping -

SW12 - West Cut Dam 8.8 3,590 - - - 26 -

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Sample Location pH EC

(µS/cm) TSS

(mg/L) TDS

(mg/L)

Oil & Grease (mg/L)

Temp (oC)

Comments

SW14 - Box Cut Dam (Admin) 8.90 679 - - - 28 -

SW15 - Eagles Nest Dam 9 5,990 - - - 26.8 -

SW20 - Dam Adjacent to West Cut Dam

7.80 788 - - - 24 -

SW29 - SCB Dam 7.70 1,022 - - - 24 -

SW30 - Turkeys Nest 9.00 6,780 - - - 27 No Access

SW31 - Gordon Below Franklin 9.20 3,370 - - - 27

SW37 - Wollemi Sump - - - - - - No longer exists

SW38 - Homestead Open Cut 8.80 2,240 - - - 26 -

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. No data was collected for

January.

Table 2 - Ground Water Results – January 2015

Sample Location pH EC

(S/cm)

Depth to Water (m)

Temp (oC)

Comments

GW02 - - - - -

GW11 - - - - -

P106 - - - - -

P109 - - - - -

P110 - - - - -

P111 - - - - -

P114 - - - - -

P116 - - - - -

P202 - - - - -

P206 - - - - -

P301 - - - - -

P315 - - - - -

GW12 - - - - -

GW13 - - - - -

GW14 - - - - -

GW15 - - - - -

GW16 - - - - -

GW17 - - - - -

GW18 - - - - -

GW19 - - - - -

GW20 GW20 is a vibration wire multi-piezometer installation

Page | 6

Sample Location pH EC

(S/cm)

Depth to Water (m)

Temp (oC)

Comments

GW21 - - - - -

GW22 - - - - -

P1* - - - - -

P3* - - - - -

P5* - - - - -

P6* - - - - -

P11* - - - - -

P12* - - - - -

P13* - - - - -

P15* - - - - -

P16* - - - - -

P17* - - - - -

P18* - - - - -

P20* - - - - -

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.

Table 3 - Dust Deposition Results – January 2015

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* 13.8 3.4 25 - 3.4 D03* 3.9 1.4 36 - 1.4 D07* 3.3 1.8 55 - 1.8 D09* 1.7 1.2 71 - 1.2

#D11* 3 1.7 57 - 1.7 #D12 2.5 1.7 68 2.5 1.7

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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)

#D17 NRR – Gauge Broken D19* 15 3.8 25 - 3.8 D20 1.1 0.7 64 1.1 0.7 #D21 1.8 0.8 44 1.8 0.8

#D22 1.7 1.2 71 1.7 1.2 D23 1.7 1.2 71 1.7 1.2 #D24 0.6 0.5 83 0.6 0.5

#D25 2.0 1.6 80 2.0 1.6

D26 2.0 1.1 55 2.0 1.1

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 – January 2015

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.

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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.

November results are presented in Table 4 and Figure 3 below.

Table 4 - HVAS Results – January 2015

Date of Run

HV01 - Coralie

TSP (g/m3)

HV02 - Caban

TSP (g/m3)

HV03 - Thelander

TSP (g/m3)

HV04 - Muller

TSP (g/m3)

5/01/2015 70.8 39.8 56.6 63.8

11/01/2015 30.4 18.5 16.7 32.0

17/01/2015 56.3 69.2 29.2 56.8

23/01/2015 43.4 44.3 42.4 72.4

29/01/2015 28.7 20.4 25.3 29.4

Monthly Mean 45.9 38.4 34 50.9

Yearly Mean 45.9 38.4 34 50.9

Figure 3 - HVAS YTD Annual Average – January 2015

Criteria Limit: 90ug/m3 Annual Average

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7.0 Blast Events

Four monitoring sites measure ground vibration and air blast overpressure for blasts

conducted at Wambo. Seven 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 January 2015 were within the prescribed criteria limits.

Blast results are presented in Table 6 below.

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Table 6 - Blast Results – January 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

2-Jan-15 11:11:22 M23WWA1 99 0.08 Y NRR 95.8 0.06 Y 110.7 0.38 Y

8-Jan-15 14:35:22 M18WRA3 89.4 0.08 Y 92.6 0.17 Y 92 0.09 Y 103 0.34 Y

16-Jan-15 15:09:17 BS3WRA1 99.4 0.52 Y 102.8 1.24 Y 110.3 0.61 Y 96.3 0.23 Y

16-Jan-15 15:15:41 M16WTA2 111.7 0.1 Y 92.1 0.13 Y 104.2 0.13 Y 103 0.6 Y

23-Jan-15 11:14:49 M16WMA2 93.6 0.11 Y 94 0.14 Y 95.2 0.16 Y 108 0.43 Y

30-Jan-15 16:09:41 M17WMA3 97.8 0.2 Y 94 0.15 Y 99.3 0.1 Y 104.3 0.72 Y

30-Jan-15 16:33:10 M22WWA2 102.3 0.13 Y 90.4 0.06 Y 99.3 0.05 Y 108 0.38 Y

Date Time Location

Thelander Residence – A8047

Over Pressure (dB(L))

Vibration (mm/s)

Wave-form

2-Jan-15 11:11:22 M23WWA1 104.8 0.42 Y

8-Jan-15 14:35:22 M18WRA3 104.4 0.42 Y

16-Jan-15 15:09:17 BS3WRA1 105.1 0.24 Y

16-Jan-15 15:15:41 M16WTA2 99.1 0.6 Y

23-Jan-15 11:14:49 M16WMA2 106.1 0.44 Y

30-Jan-15 16:09:41 M17WMA3 99.1 0.48 Y

30-Jan-15 16:33:10 M22WWA2 104.1 0.39 Y

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8.0 Noise Monitoring

8.1. Attended Monitoring

Attended noise monitoring is undertaken on a monthly basis and 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.

January results are presented in Table 7 and Figure 4 below.

All PM10 sites were within the yearly and 24hr average criteria average criteria limits of

30ug/m3 and 50ug/m3 respectively.

Page | 12

Table 7 - PM10 Results – January 2015

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

1/01/2015 25.0 25 21.3 21.3 19.8 19.8 22.5 22.5

2/01/2015 15.8 20.4 14.1 17.7 15.5 17.7 13.9 18.2

3/01/2015 19.1 20.0 17.7 17.7 16.5 17.3 19.6 18.7

4/01/2015 17.2 19.3 16.1 17.3 14.6 16.6 20.1 19.0

5/01/2015 21.6 19.7 16.3 17.1 17.4 16.8 18.8 19.0

6/01/2015 17.8 19.4 15.8 16.9 15.6 16.6 18.2 18.9

7/01/2015 NRR 19.4 12.4 16.2 12.4 16.0 17.9 18.7

8/01/2015 19.9 19.5 18.5 16.5 14.5 15.8 23.4 19.3

9/01/2015 18.9 19.4 16.7 16.5 17.6 16.0 34.7 21.0

10/01/2015 17.2 19.2 17.2 16.6 16.7 16.1 22.8 21.2

11/01/2015 7.0 18.0 5.1 15.6 5.3 15.1 5.7 19.8

12/01/2015 5.3 16.8 4.2 14.6 4.1 14.2 6.3 18.7

13/01/2015 11.7 16.4 11.0 14.3 11.4 14.0 16.0 18.5

14/01/2015 10.0 15.9 22.5 14.9 7.8 13.5 10.2 17.9

15/01/2015 17.2 16.0 15.2 14.9 10.6 13.3 13.1 17.5

16/01/2015 14.5 15.9 17.8 15.1 11.5 13.2 14.3 17.3

17/01/2015 13.6 15.7 15.8 15.2 8.2 12.9 10.7 17.0

18/01/2015 24.4 16.2 18.7 15.4 22.1 13.4 28.6 17.6

19/01/2015 20.7 16.5 11.3 15.1 11.2 13.3 20.7 17.8

20/01/2015 12.5 16.3 8.3 14.8 11.1 13.2 11.6 17.5

21/01/2015 14.6 16.2 12.4 14.7 13.7 13.2 18.5 17.5

22/01/2015 19.9 16.4 13.6 14.6 15.7 13.3 15.8 17.4

23/01/2015 11.7 16.2 11.7 14.5 10.7 13.2 15.8 17.4

24/01/2015 17.7 16.2 17.5 14.6 19.6 13.5 18.9 17.4

25/01/2015 15.2 16.2 11.4 14.5 6.5 13.2 8.1 17.0

26/01/2015 17.1 16.2 13.5 14.5 12.9 13.2 17.0 17.0

27/01/2015 9.1 16.0 7.0 14.2 8.2 13.0 8.7 16.7

28/01/2015 8.7 15.7 7.7 14.0 9.5 12.9 9.5 16.5

29/01/2015 10.5 15.5 9.2 13.8 9.2 12.8 10.2 16.3

30/01/2015 13.9 15.4 12.3 13.7 10.5 12.7 15.4 16.2

31/01/2015 23.7 15.7 20.0 13.9 15.4 12.8 20.7 16.4

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 | 13

Figure 4 - 24 Hour Average PM10 Results – January 2015

10.0 Community Complaints

During the reporting period nil complaints were received. 31 complaints have been

received year to date, compared to twenty eight during the same reporting period in

2014.

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 | 15

Meteorological Data January 2015

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

01/01/15 17.6 26.8 36.5 18.7 27.2 35.9 -13.9 5.1 17.2 28.6 64.7 93.5 -1.8 332.2 979.3 0.0 0.0 1.9 4.9

02/01/15 21.3 26.5 32.2 21.9 27.1 31.9 -6.0 7.7 21.8 40.3 67.9 94.2 -1.7 351.2 1095.9 21.2 0.1 1.9 4.7

03/01/15 19.3 26.7 33.9 20.4 27.3 34.1 -8.3 7.6 18.9 35.8 67.0 93.8 -1.7 337.8 972.8 0.0 0.0 1.9 6.2

04/01/15 20.2 28.2 36.7 21.3 28.7 35.4 -16.7 6.5 19.0 31.8 64.0 95.0 -1.7 300.8 1046.4 0.0 0.0 2.1 6.8

05/01/15 21.7 24.6 28.4 22.6 25.0 28.3 -2.3 5.2 11.2 57.6 70.3 83.9 -1.7 184.5 857.8 0.0 0.9 3.3 6.2

06/01/15 20.6 25.1 30.9 21.6 25.6 30.9 -6.1 5.7 13.7 48.4 69.7 87.9 -1.7 267.8 1146.1 0.0 0.2 2.5 6.3

07/01/15 19.9 25.2 31.3 21.0 25.7 31.5 -3.6 6.2 17.8 37.0 65.2 90.4 -1.7 340.8 988.4 0.0 0.2 2.4 6.3

08/01/15 17.8 25.8 34.7 19.0 26.3 33.8 -15.4 6.5 20.0 33.3 63.6 93.2 -1.8 328.1 984.9 0.0 0.0 1.8 4.8

09/01/15 19.1 26.2 36.8 20.3 26.6 36.3 -15.0 5.7 21.8 27.5 67.9 93.5 -1.7 262.6 1010.5 0.0 0.0 1.5 5.9

10/01/15 21.4 25.0 34.1 22.4 25.4 33.8 -16.0 5.9 16.4 39.1 75.5 92.0 -1.7 147.7 885.7 1.2 0.0 1.6 7.4

11/01/15 20.1 21.1 22.2 20.6 21.6 22.6 2.8 6.2 10.6 87.7 94.2 96.4 -1.7 37.9 204.8 22.9 0.0 1.3 3.3

12/01/15 20.0 22.0 25.6 20.6 22.3 25.6 -3.9 3.9 8.1 67.6 84.2 95.8 -1.8 155.2 766.9 0.4 0.1 2.3 5.8

13/01/15 19.6 24.4 29.5 20.4 24.8 29.6 -5.8 4.8 15.2 56.8 74.9 90.0 -1.7 224.8 1094.6 0.0 0.0 1.3 3.0

14/01/15 23.4 28.0 33.8 24.2 28.5 33.8 -1.6 6.1 25.1 35.1 62.5 93.4 -1.7 328.6 1137.3 3.7 0.0 3.2 7.1

15/01/15 20.0 25.0 31.7 20.7 25.4 31.1 -11.3 4.6 29.4 36.8 62.5 82.2 -1.7 264.2 1189.5 0.0 0.1 2.7 6.4

16/01/15 19.0 26.2 34.0 21.5 26.7 33.8 -8.7 7.1 57.3 19.3 55.1 88.1 -1.8 324.2 1018.2 0.0 0.0 2.3 6.3

17/01/15 15.4 26.4 36.6 17.2 27.6 36.4 -8.0 14.2 51.8 17.6 42.5 82.0 -1.8 350.9 998.6 0.0 0.0 2.2 5.5

18/01/15 18.2 25.1 32.5 20.4 26.0 32.1 -13.1 11.5 59.2 30.6 54.5 82.1 -1.8 325.8 1030.5 0.0 0.1 2.0 6.7

19/01/15 18.2 20.9 23.4 18.8 21.3 23.7 -0.8 5.4 9.7 71.2 82.4 92.8 -1.8 74.1 380.5 1.2 0.8 2.8 6.6

20/01/15 16.4 21.1 26.0 16.8 21.5 26.1 -6.8 5.4 13.7 59.9 79.6 95.1 -1.8 189.1 1138.6 51.9 0.3 2.9 9.6

21/01/15 18.0 23.0 30.2 19.0 23.5 30.3 -7.2 6.2 16.4 46.8 75.4 91.0 -1.8 296.6 985.9 0.0 0.1 1.9 6.7

22/01/15 19.7 24.3 29.4 20.9 24.8 29.4 -3.4 6.5 15.6 48.7 74.5 93.4 -1.7 270.4 1103.8 0.0 0.0 2.6 7.0

23/01/15 19.6 25.4 32.5 20.6 25.9 32.4 -9.0 6.7 21.1 46.2 73.8 95.7 -1.8 263.8 1032.1 0.0 0.0 1.1 5.8

24/01/15 20.1 26.4 33.8 20.9 26.9 33.5 -5.0 6.3 18.0 40.2 71.1 95.2 -1.8 320.4 975.1 39.5 0.0 1.4 6.2

25/01/15 20.8 27.6 35.8 21.3 28.1 35.7 -6.6 6.3 35.6 35.3 66.7 95.3 -1.7 318.1 964.4 1.6 0.0 2.7 6.4

26/01/15 19.4 21.5 25.5 19.9 22.0 26.3 2.2 5.7 9.9 67.9 85.5 95.4 -1.8 46.9 396.8 2.5 0.9 2.4 5.2

27/01/15 17.3 18.8 19.9 17.8 19.3 20.3 3.3 5.4 7.1 90.8 94.0 95.8 -1.8 15.5 144.7 24.9 0.6 2.1 5.0

28/01/15 16.9 18.8 21.6 17.9 19.2 21.2 -4.1 5.4 12.8 64.9 84.8 95.3 -1.8 104.2 938.8 2.6 0.4 1.9 4.9

29/01/15 15.1 19.6 26.0 16.1 20.1 25.3 -12.9 5.8 18.3 40.3 61.8 88.8 -1.8 279.5 1071.5 0.0 0.0 2.1 4.6

30/01/15 11.4 19.6 28.4 12.4 20.2 28.3 -7.0 7.3 24.9 28.8 65.9 96.1 -1.9 298.5 1079.7 0.0 0.0 1.0 3.4

31/01/15 13.4 21.6 29.8 14.6 22.0 29.5 -14.0 5.8 22.9 28.9 65.2 95.2 -1.7 331.5 1119.1 0.0 0.0 1.4 5.1

MONTH 11.4 24.1 36.8 12.4 24.6 36.4 -16.7 6.4 59.2 17.6 70.5 96.4 -1.9 247.5 1,189.5 173.6 0.0 2.1 9.6

Page | 16

Appendix B

Surface Water Graphs

SW 15 – Eagles Nest Dam (EPL Discharge Point)

Page | 17

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