annual review - stratford coal...the metallurgical coal is a semi-hard coking coal with high...

2012

Annual Review

STRATFORD COAL

ANNUAL REVIEW

Reporting Period:

1st July 2011 to 30th June 2012

Name of mine: Stratford Mining Complex.

Mining Titles/Leases: ML1360, ML1409, ML1447, ML1521, ML1528,

Ml1538, ML1577

MOP Commencement date December 2010

MOP Completion date June 2013

AR Commencement date 1st July 2011

AR End date 30th June 2012

Name of leaseholder: Stratford Coal Pty Ltd

Name of mine operator (if different): Ditchfield Contracting Pty Ltd

Reporting Officer: Mr Tony Dwyer

Title: Manager-Environment and Approvals

Signature ………………………………………………

Date / /

Stratford Coal Annual Review

Year Ending June 2012

Prepared by

CARBON BASED ENVIRONMENTAL

PTY LTD

on behalf of

Stratford Coal Ltd

Carbon Based Environmental Pty Ltd Unit 3, 2 Enterprise Crescent

Singleton NSW 2330

Phone: 02 6571 3334

Fax: 02 6571 3335

Email:[email protected]

Stratford Coal Pty Ltd Page

Annual Review June 2012

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CONTENTS 1. INTRODUCTION ............................................................................................................. 6

1.1 COAL PRODUCTS AND MARKETS ................................................................................................. 7

1.2 APPROVAL STATUS ........................................................................................................................... 8 1.2.1 Status of Leases, Licences and Approvals ................................................................................... 8 1.2.2 Amendments to Approvals/Licences over the Reporting Period .............................................. 10

1.3 MINE CONTACTS ............................................................................................................................... 11

1.4 ACTIONS REQUIRED AT PREVIOUS AR REVIEW ..................................................................... 11 2. OPERATIONS DURING THE REPORTING PERIOD ............................................ 11

2.1 EXPLORATION ................................................................................................................................... 11 2.1.1 Reserve/Resource Status .............................................................................................................. 11 2.1.2 Estimated Mine Life ........................................................................................................................ 11 2.1.3 Recovery / Dilution .......................................................................................................................... 12

2.2 OPEN CUT MINING ............................................................................................................................ 12 2.2.1 Mining Equipment and Method...................................................................................................... 13 2.2.2 ROM Production History and Forecast ........................................................................................ 14

2.3 COAL HANDLING AND BENEFICATION ...................................................................................... 14 2.3.1 Washery Throughput ...................................................................................................................... 14 2.3.2 Saleable Coal Production............................................................................................................... 15 2.3.3 Coal Stockpile Capacity (ROM & Product) .................................................................................. 15 2.3.4 Product Transport ............................................................................................................................ 15

2.4 WASTE MANAGEMENT AND RECYCLING .................................................................................. 15 2.4.1 Chemical Characterisation of Residues ....................................................................................... 15 2.4.2 Sewerage Treatment and Disposal .............................................................................................. 16 2.4.3 Fuel Containment ............................................................................................................................ 16 2.4.4 Oil and Grease Containment and Disposal ................................................................................. 17 2.4.5 Used Tyres ....................................................................................................................................... 17 2.4.6 Rubbish Disposal ............................................................................................................................ 17

2.5 WATER MANAGEMENT .................................................................................................................... 18 2.5.1 Water Supply and Demand ............................................................................................................ 18 2.5.2 Water Management Review .......................................................................................................... 19

2.6 HAZARDOUS AND EXPLOSIVES MATERIALS MANAGEMENT ............................................. 21 2.6.1 Status of Licences ........................................................................................................................... 21 2.6.2 Material Safety Data Sheets .......................................................................................................... 21

3. ENVIRONMENTAL MANAGEMENT AND PERFORMANCE ............................... 21

3.1 CORPORATE ENVIRONMENTAL POLICY ................................................................................... 21

3.2 Review of Performance .................................................................................................................... 22 3.2.1 Environment Protection Licences 5161 and 11745.................................................................... 22 3.2.2 Development Consent or Approval Conditions ........................................................................... 22

3.3 METEOROLOGICAL MONITORING ............................................................................................... 23 3.3.1 Rainfall .............................................................................................................................................. 23 3.3.2 Wind Speed and Direction ............................................................................................................. 23 3.3.3 Temperature ..................................................................................................................................... 24



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3.4 AIR QUALITY ....................................................................................................................................... 25 3.4.1 Dust Control Procedures ................................................................................................................ 25 3.4.2 Dust Monitoring and Criteria .......................................................................................................... 26 3.4.3 Review of Dust Monitoring Results ............................................................................................... 26 3.4.4 Complaints ....................................................................................................................................... 27

3.5 SEDIMENT AND EROSION CONTROL .......................................................................................... 27

3.6 SURFACE WATER ............................................................................................................................. 27 3.6.1 Surface Water Management .......................................................................................................... 27 3.6.2 Surface Water Monitoring .............................................................................................................. 30

3.7 GROUNDWATER ................................................................................................................................ 34 3.7.1 Groundwater Management ............................................................................................................ 34 3.7.2 Mine Water Offsite Discharge ....................................................................................................... 35 3.7.3 Groundwater Monitoring ................................................................................................................. 35 3.7.4 Complaints ....................................................................................................................................... 38

3.8 Flora and Fauna Management ........................................................................................................ 39

3.9 Weed Control ...................................................................................................................................... 39

3.10 VIBRATION AND AIRBLAST ........................................................................................................... 39 3.10.1 Blast Criteria and Control Procedures ..................................................................................... 39 3.10.2 Review of Blast Monitoring Results ......................................................................................... 39 3.10.3 Complaints ................................................................................................................................... 40 3.10.4 Dilapidation Reports ................................................................................................................... 40

3.11 NOISE .................................................................................................................................................... 40 3.11.1 Noise Criteria and Control Procedures.................................................................................... 40 3.11.2 Review of Noise Monitoring Results ........................................................................................ 40 3.11.3 Noise Control Measures ............................................................................................................ 43 3.11.4 Noise Management Plan ........................................................................................................... 44 3.11.5 Future Works ............................................................................................................................... 44 3.11.6 Complaints ................................................................................................................................... 44

3.12 Landscaping and Visual Screening .............................................................................................. 45

3.13 Lighting Emissions ........................................................................................................................... 46

3.14 CULTURAL AND NATURAL HERITAGE CONSERVATION ...................................................... 46

3.15 SPONTANEOUS COMBUSTION ..................................................................................................... 47 3.15.1 Complaints ................................................................................................................................... 47

3.16 BUSH FIRE MANAGEMENT ............................................................................................................. 47

3.17 FERAL ANIMAL CONTROL .............................................................................................................. 47

3.18 COAL WASHERY REJECTS / REJECT MANAGEMENT ........................................................... 47 3.18.1 Handling and Disposal Procedures ......................................................................................... 47

4. COMMUNITY RELATIONS ......................................................................................... 48

4.1 COMMUNITY CONSULTIVE COMMITEE ...................................................................................... 48

4.2 ENVIRONMENTAL COMPLAINTS .................................................................................................. 48

4.3 LIAISON AND COMPLAINT RESOLUTION................................................................................... 49



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4.4 EMPLOYMENT STSTUS AND DEMOGRAPHY ............................................................................ 49

4.5 EMPLOYEE ENVIRONMENTAL AWARENESS TRAINING ....................................................... 49 5. REHABILITATION ........................................................................................................ 50

5.1 REHABILITATION PRINCIPLES ...................................................................................................... 50

5.2 REHABILITATION PROGRESS ....................................................................................................... 51

5.3 LAND USE MANAGEMENT .............................................................................................................. 52 5.3.1 Land use Objective/Current Use ................................................................................................... 52 5.3.2 Final Void Treatment ...................................................................................................................... 52

6. ACTIVITIES PROPOSED IN THE NEXT AR PERIOD ........................................... 53

6.1 ENVIRONMENTAL MANAGEMENT ............................................................................................... 53

6.2 REHABILITATION ............................................................................................................................... 53 7. REFERENCES............................................................................................................... 54 8. LIST OF PLANS ............................................................................................................ 54 9. LIST OF APPENDICES ............................................................................................... 54

LIST OF TABLES

Table 1 Typical Coal Qualities of Coal Products Table 2 Current Mining Equipment Table 3 Total Monthly ROM Coal Production (BRN/Roseville West/Codam/Duralie) Table 4 Product Coal Produced by Month Table 5 Stratford Mine Monthly Rainfall Records Table 6 Monthly Average and Maximum Wind Speeds Table 7 Dominant Wind Directions by Month Table 8 Monthly Minimum, Average and Maximum Air Temperatures Table 9 Routine Monthly Surface Water Monitoring Sites Table 10 Dams Which Overflowed or Had Syphons Operating During the Reporting

Period Table 11 Bores Monitored in Relation to Roseville Pit Table 12 Bores Monitored in Relation to Bowens Road North Pit Table 13 BRWN1 Monitored in Relation to Bowens Road West North (Roseville

Extension) Pit Table 14 Bores Monitored in Accordance with MOP 1999 Table 15 Summary of Main Rehabilitation Works from July 2011 to June 2012



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1. INTRODUCTION This Annual Review (AR) has been compiled in accordance with Condition 3 Schedule 5 of Development Consent DA No. 23-98/99. The AR describes the environmental protection, pollution control and rehabilitation activities at the Stratford Mining Complex (SMC) since the last report dated June 2011. As required by Condition 3, comparison of environmental monitoring results have been made against relevant statutory requirements, monitoring results of previous years and relevant predictions of Environmental Assessments. Environmental activities planned for the next 12 months are also discussed. The SMC is located approximately 100km north of Newcastle in New South Wales. Refer Figure 1 (Appendix 1). Coal was first discovered in the Gloucester Basin in 1855, but it was not until the early 1970’s that the full extent of the Stratford deposit was identified as a result of a drilling programme by the Gloucester Coal Syndicate. In 1977, BMI Mining Pty Ltd (BMI) and two previous Syndicate members formed the Gloucester Joint Venture and BMI commenced an exploration programme. In December 1981, BMI’s joint venture partners sold their 49% aggregate interest to Esso Australia Resources Ltd (EARL) In May 1993, Excel Mining Pty Ltd (Excel) acquired an option over the assets of the Gloucester Joint Venture. During 1993, Excel completed a detailed feasibility study on the Stratford area that examined the viability of a small coking coal mine. CIM Resources Ltd (CIM) and Excel concluded a Heads of Agreement in February 1994. The Stratford Joint Venture was subsequently formed in May 1994, with CIM holding a 70% interest and Excel a 30% interest. In August 1994, a Farm-in Agreement was signed with Itochu Corporation - a major Japanese trading company - whereby Itochu earned a 10% interest in the Stratford Joint Venture. Itochu Corporation acts as the sole sales agent for Stratford coal in Japan and also purchases coal in its own right. The Stratford Joint Venture Interests up until early October 1996 were: CIM Resources Ltd 70% Excel Stratford Pty Ltd 20% ICA Coal Pty Ltd 10% (ICA Coal Pty Ltd is a subsidiary of Itochu Corporation and Itochu Australia Ltd.) In early October 1996, CIM Resources Ltd, funded by an investment in the Company by RJB Mining of the United Kingdom, purchased the interest in the Joint Venture held by Excel Stratford Pty Ltd. As from 23rd May 2002 CIM Resources Ltd changed name to Gloucester Coal Ltd (GCL). In August 2005 GCL acquired ICA Coal Pty Ltd’s 10% share of the Stratford Joint Venture and associated assets bringing GCL to 100% ownership of SMC. In June 2009 Noble Group became an 87% owner of GCL. A merger between GCL and Yancoal Australia Limited occurred in June 2012. Following shareholder approval in May 1994, CIM commenced acquisition of the Gloucester Coal Assets and detailed planning for Stratford, including an Environmental Impact Statement (EIS). A Development Application for the project was lodged with Gloucester Shire Council on 12 September 1994 and a Mining Lease Application lodged with the Department of Mineral Resources (DMR) in October 1994. Development Consent was approved by the NSW Minister for Planning on 19 December 1994 and



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Mining Lease Number 1360 was granted by the NSW Minister for Mineral Resources on 21 December 1994. Production commenced in June 1995 with the first coal railed in July 1995 following a six month construction programme. Production from the Stratford Main Pit, and the Roseville Pit 1998-2000, continued until June 2003. Following a short construction period, production from the Bowens Road North pit commenced in March 2003. Development consent for the Roseville Pit extension was granted on the 18th January 2005. Construction of the Roseville Pit extension commenced in late January 2006. Development consent was also granted for the mining of Ellis’ Corner on the 20th June 2005 and ML 1577 was granted on the 1st March 2006. Mining in Ellis’ Corner commenced in March 2006. Development consent for mining of the Roseville West pit was granted on the 16th February 2007. Modification to the Bowens Road North and Stratford Development Consents, both on 26 November 2010. Stratford and Bowens Road North Mines were described as the Stratford Mining Complex by these modifications. The Bowens Road North modification approved the westward pushback of the pit highwall and increased the permitted rate of coal mining from 0.9 million tonnes per annum (Mta) to 1.0 Mta. The Stratford modification permitted deepening of the Roseville West pit, rail loop augmentation, provision for additional rejects and waste rock to be emplaced in the Main Pit void and approved an irrigation area. The Stratford Mining Complex is located in an area of 1,500ha of cleared former grazing land owned by the Company to the east of The Bucketts Way, between the villages of Stratford and Craven. Refer Figure 1 (Appendix 1). Stratford Mining Complex consists of the active open-cut Bowens Road North and Roseville West mining pits with a coal handling and processing plant (CHPP) and associated raw and product coal handling and rail loading and unloading facilities.

1.1 COAL PRODUCTS AND MARKETS SMC produces a coking coal and a range of thermal coal products for export. The metallurgical coal is a Semi-hard Coking Coal with high fluidity and swell. All of the coking coal is sold into Asia. Thermal coal is sold through trading companies or directly to end users and is largely sold into Japanese and East Asian markets. Typical coal product qualities are shown in Table 1 below.

Table 1 - Typical Coal Qualities of Coal Products

Parameter

Gloucester Semi-hard Coking Coal

Gloucester Thermal Coal

Total Moisture 9% 6 to 7% Inherent Moisture (ad) 1.5% 1.3% Ash (ar) 9.9 % 19-24% Volatile Matter 33-34% 24-32% Total Sulphur 1.05% 0.8-2.5% Fixed Carbon (ar) 55% CSN 8.5 Not applicable Fluidity >5000ddpm Not applicable Calorific Value 7550 Kcal/kg 5750-6300 Kcal/kg HGI 55 52-60 Size 0 to 50mm 0 to 50mm



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1.2 APPROVAL STATUS

1.2.1 Status of Leases, Licences and Approvals The Stratford Mining Complex has the following approvals: • Development Consent issued by the Minister for Planning dated 19 December 1994. The consent

is limited to a period of 14 years from the date of a grant of a Mining Lease in respect of the Development.

• Mining Lease (ML) 1360 dated 21 December 1994 issued by the Minister for Minerals and Energy

to CIM Resources Ltd, Excel Mining Pty Ltd and ICA Coal Pty Ltd. The lease was issued for a period of 21 years.

• An Approval to Carry Out Open Cut Coal Mining within Mining Lease 1360 (the Open Cut

Approval) issued by the Director-Coal Division, Department of Mineral Resources dated 30 June 1995.

• Pollution Control Licence 5161 issued by the Environment Protection Authority (now Office of

Environment & Heritage, OEH) in accordance with the Pollution Control Act 1970. The Licence was originally received on 4 October 1995. This licence was replaced by an Environment Protection Licence (EPL) 5161 in July 2000 issued under the Protection of the Environment Operations Act 1997.

• An Amendment to the Development Consent dated 17 July 1996 permitting the development and

operation of Roseville Pit subject to a number of amended and/or additional Development Consent Conditions.

• An Amendment to the Approval to Carry Out Open Cut Coal Mining dated 26 November 1996

permitting the mining of Roseville Pit within the existing Mining Lease No. 1360. The balance of the Roseville Pit area could not be mined until a mining lease over that area had been granted.

• ML 1409 covering the balance of the Roseville Pit was granted for a 21 year period from 7

January 1997. • An Amendment to the Approval to Carry Out Open Cut Coal Mining dated 28 April 1997 permitting

the extended mining of the Main Deposit within the existing ML1360. • An Amendment to Design of an Emplacement Area granted 4 February 1998. • Approval of SCPL’s Mining Operations Plan (MOP), which covers completion of mining within the

Main Deposit – issued in January 1999. • ML1447 involving an area of 52.2 hectares and located along the western boundaries of ML’s

1360 and 1409. This lease area includes 2.9 hectares of ground to be disturbed by the existing codisposal facility. The lease was issued on 1 April, 1999.

• Approval of an Expansion of the Western Codisposal Storage Area granted on 24 September

1999.

• Modification of Development Consent to permit coal washery rejects disposal into Roseville Pit and allow additional rail movements granted on 4 July 2000.

• Approval of SCPL’s MOP dated April 2001 that covered completion of mining within the Main

Deposit and included mining within the Bowens Rd West Pit and reprocessing of washery reject material (“Codisposal”) – issued on 7 June 2001.

• Variation of EPL 5161 to permit a controlled release of mine water granted on 16 June 2001.



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• Issuing of Development Consent on 25 July 2001 for the proposed Bowens Road North Open Cut Coal Mine. Mining commenced in the Bowens Road North Mine in February 2003.

• Further variation to EPL 5161 on 21 February 2002 to allow mine water to be released up until 31

January 2003.

• National Parks & Wildlife Service (NPWS) Consent to Destroy (with Salvage) was issued on the 5th June 2002.

• Issuing of Development Consent for the proposed Southern Extension of Bowens Road West Pit

by Planning NSW on 5 July 2002. • Development Consent issued by the Minister for Planning dated 1st October 2002. The consent

related to the modification of the Project to allow open cut mining in one pass (north to south) and to change the number and type of equipment in the mining fleet.

• Mining Lease 1528 dated 31st January 2003 issued by the Minister for Minerals and Energy to

Gloucester Coal Ltd and CIM Stratford Pty Ltd. The lease was issued for a period of 21 years. • Approval of Gloucester Coal’s BRN MOP, covering life of mine activities, on the 4th February 2003. • EPL 11745 issued by the Environment Protection Authority in accordance with Section 55,

Protection of the Environment Operations Act 1997. • Surrender of the 1994 Stratford Development Consent and replacement with the 1999 Stratford

Development Consent when processing Duralie Coal Mine’s coal at Stratford commenced. This surrender occurred in July 2003.

• Variation to EPL 5161 on 12th December 2002 to allow mine water to be released under “drought

release” conditions and extension of normal release conditions to 1st April 2003. • Section 126 Coal Mines Regulations Act (1982) approval for the deposition of Duralie and Duralie

blend rejects into both the Bowens Road West North and Stratford Main pits was granted during 2003.

• Section 127 Coal Mines Regulations Act (1982) approval for the Discontinuance of Roseville and

Bowens Road West Pits as Reject Emplacement Areas was issued in November 2003. • The CHPP was approved by the Senior Inspector for Mines as a Declared Plant under Section

145 of the Coal Mines Regulations Act (1982) on 1st March 2004.

• Groundwater licence approval for the BRN, SCM, Bowens Road West and Roseville pits was granted by DIPNR on the 1st September 2004.

• DA 39-02-01-MOD-2 was approved on the 17th November 2004 to allow Run of Mine (ROM)

production from the BRN project to reach 0.9 Mtpa, and to allow the management of the BRN intersection in accordance with the “Bowens Road Traffic Management Plan”.

• EPL 5161 (covering the Stratford Coal Mine but not including BRN) was varied on the 13th June

2005 effectively reducing the licensed scale of activity from >2,000,000-3,000,000T produced per annum to 0-500,000T produced per annum. Noise monitoring criteria, as presented in EPL 11745, was included in the licence.

• A variation to EPL 11475 was granted in June 2005 that increased the allowed annual ROM

production from BRN to >500,000-2,000,000. • Modification of DA 39-02-01 was approved on the 20th June 2005 to allow for mining of Ellis’

corner.



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• Approval was given by Department of Primary Industries (DPI) on the 20th July 2006 for the extension of the Stratford product stockpile,

• Approval of a Review of Environmental Factors for exploration drilling within the south Stratford

area was approved by the DPI in July 2005 • Modification of DA 98/99 to allow for the mining of Roseville extension was approved on the 18th

January 2006, • MOP for the Roseville Extension was approved by the DPI on the 17th February 2006,

• ML 1577 was granted on the 1st March 2006 allowing mining activities within Ellis’ Corner.

• Approval was granted by DPI on the 13th June 2006 to extend the western limit of BRN pit by 50m. • Modification of DA 23-98/99 to allow for mining of Roseville West pit was approved on the 16th

February 2007, • MOP for the Roseville West pit was approved by the DPI on the 23rd May 2007, • A revised Noise Management Plan (NMP) (Vipac 2006) for Stratford/BRN was approved by the

Department of Planning (DoP) in 2007, • The installation of a communication tower at Stratford was approved by Gloucester Shire Council

(GSC) (DA 2007/1448) on the 29th May 2007.

• Exploration Lease 6904 was granted on the 9th October 2007.

• Approval for the construction of the Bowens Road Diversion was approved by GSC on 2nd February 2008.

• Exploration Leases 311 and 315 were renewed on the 13th May 2008.

• Modification of DA 23-98/99 to allow for a Product Stockpile Extension was approved on the 1st

September 2008.

• Modification to Development Consent on 26 November 2010 to approve the deepening of the Roseville West pit, rail loop augmentation, provision for additional rejects and waste rock to be emplaced in the Main Pit void and approved an irrigation area.

• Modification to the Development Consent on 26 November 2010 to approve the westward

pushback of the BRN pit highwall and increased permitted rate of coal mining from 0.9 million tonnes per annum (Mta) to 1.0 Mta.

1.2.2 Amendments to Approvals/Licences over the Reporting Period The SMC Biodiversity Management Plan was approved on the 29 March 2012.



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1.3 MINE CONTACTS Mining Operations are carried out under contract by Ditchfield Contracting (DC). Stratford Coal Pty Ltd (SCPL) operates the CHPP. Site personnel responsible for mining, CHPP, rehabilitation and environmental issues at the end of the reporting period were: Manager, Mining Engineering Mr John Bowen General Manager, Stratford & Duralie Operations Mr Mike Smith CHPP Manager Mr Stuart Tomlins Manager, Environment and Approvals Mr Tony Dwyer Note that all personnel listed above are employees of SCPL with the exception of the Manager, Mining Engineering who is a DC employee.

1.4 ACTIONS REQUIRED AT PREVIOUS AR REVIEW A DPI review was not conducted on the 2010-2011 AR. However, an independent environmental audit was undertaken in November 2011 which included consideration of the AR. No required actions were identified in regard to the AR.

2. OPERATIONS DURING THE REPORTING PERIOD

2.1 EXPLORATION Exploratory drilling was undertaken on exploration leases A311, A315 and EL6904 in the year to determine coal resources within North Stratford and the Grant and Chainey exploration areas. Exploration activities are expected to continue throughout the 2012-13 reporting period concentrating on North Stratford, the Glen, Grant, Chainey, Fairbains Lane and Duralie areas.

2.1.1 Reserve/Resource Status Proven and probable Coal Reserves as of 30 June 2010 for the Bowens Road North (BRN) Deposit was 2.2 million tonnes and the Roseville Deposit (combined Roseville West and South) was 18.1 million tonnes. Reserves are updated on the Gloucester Coal website.

2.1.2 Estimated Mine Life Both the Bowens Road North and Roseville West pits are expected to be mined until the end of 2013 under current approvals. Processing of coal from both the Bowens Road North, Stratford and Duralie operations is expected to extend the operational life of the Stratford Mine in terms of coal processing, handling and railing until at least 2019.



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2.1.3 Recovery / Dilution Bowens Road North Pit The Marker seams plies and the Bowens Road Coal Member are all recovered at the Bowens Road North operations and processed at the Stratford CHPP. The Marker seams consist of a series of thin coal plies correlated as the M1, M8 and M3 seams containing plies 300mm to 1.5m. A total of ten (10) plies of the Marker seam are recovered using modified mining methods and machinery, an additional three Marker coal plies will be recovered using the smaller fleet with the associated benefit of a reduction in losses and dilution. Marker Ply ID Typical Thickness Loss Dilution M1 1 to 1.5m 2% 15% M8 300mm to 400mm 5% 20% M3 1m 2% 15% The Bowens Road coal member consists of a 12m to 14m thick seam. In seam selectivity is required to separate coking and thermal coal working sections. Due to the thickness of the seam and the hardness of the floor, losses and dilutions are minimal - less than 1% loss and 3% dilution. Roseville West Pit The Roseville West Pit contains recoverable coal from the Bindaboo, Deards and Cloverdale Coal Seams which are stratigraphically above the Roseville Seams mined in the Roseville and Roseville Extension Pits. All strata within the pit dips at 30 to 50 degrees to the west. Each of the seams contains multiple thin coal partings working sections. Up to forty five (45) coal working sections are identified which vary in thickness from 150mm to 3m. These are separated by partings 100mm to 25m. The coaling operations involves a complex logistical exercise of ripping, pulling down each parting and windrowing prior to loading out and the loading of coal sections directly into trucks Partings and seams coalesce and split within the pit and consequently working sections change in response to thickness variations. Typically coal and partings are selectively mined down to 150mm, beyond that significant losses and dilutions are encountered. The adaptation of civil earthmoving equipment minimises coal losses and dilutions. Use of tilt buckets, quick hitches, tynes for excavators and articulated trucks have been employed to achieve the selectively required. Typical losses and dilutions can be categorised by coal working section thickness as individual coal working sections are too numerous to list Coal Working Section Thickness Loss Dilution 150mm to 500mm 5% 15-20% 500mm to 1.5m 2% 10% 1.5m + 2% 10%

2.2 OPEN CUT MINING BRN mine development involved the active mining of Strip 3 and the highwall cutback. Mining is concentrating on the completion of Strip 3 and continued focus of developing the cutback. Initial mining of coal within the Roseville West pit occurred in June 2009. Coal production within this pit continued during this reporting period.



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Reprocessing of previously emplaced CHPP reject material (Cell 3 and Cell 2) to produce a low grade thermal coal product continued during the reporting period. Such reprocessing is intended to continue for the foreseeable future. This reprocessing is subject to economic viability and market variables on an ongoing basis. In summary, mining of coal within the Bowens Road North Pit and the Roseville West Pit will continue during the 2012-13 period, as will reprocessing of emplaced CHPP reject material.

2.2.1 Mining Equipment and Method The mining equipment currently in use at Stratford is listed in Table 3 provided on below.

Table 3 - Current Mining Equipment

Item Description Number Track Dozer Caterpillar D11 3 Track Dozer Caterpillar D10 3 Track Dozer Caterpillar D9 1 Hydraulic Excavator Komatsu PC1250 2 Hydraulic Excavator Komatsu PC850 2 Hydraulic Excavator Hydraulic Excavator

Komatsu PC600 Komatsu PC450

1 1

Hydraulic Excavator Caterpillar 385 2 Hydraulic Excavator Caterpillar 374 1 Hydraulic Excavator Caterpillar 345 2 Hydraulic Excavator Caterpillar 322 1 Grader Front End Loader Front End Loader Front End Loader Front End Loader Articulated Dump Truck Articulated Dump Truck Rigid Dump Truck Water Cart Scraper Drill Rig Roller

Caterpillar 14H Caterpillar 992K Caterpillar 988G Caterpillar IT38 Caterpillar 247B Volvo A40 Caterpillar 740 Caterpillar 775 Caterpillar 775 Caterpillar 615 Atlas Copco SmartROC Smoothdrum

2 1 1 1 1 4 4 16 2 1 1 1

The mining sequence in the BRN and Roseville Pits is summarised below: • Tree clearing is limited to the minimum required for ongoing operations and undertaken ahead

of the advancing face or dump. The distance is limited to 100m where possible. • Topsoil is removed to a nominal depth of 100mm. Topsoil is generally stripped down to the

underlying clay layer or bleached B horizon, depending on soil type. • Overburden removal is undertaken by hydraulic excavator in backhoe configuration. Generally,

the first 10m of clay overburden is free-dug or ripped. All other overburden needs either blasting or ripping prior to excavation.

• Significant coal partings are removed using a small hydraulic excavator in backhoe

configuration. The majority of overburden waste excavated from within the BRN pit was re-deposited in pit. Overburden from the Roseville West extension was also placed within the Stratford Main Pit. Codisposal waste was placed as reject material within the Stratford Main Pit.



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2.2.2 ROM Production History and Forecast Actual ROM production for the reporting period is listed in Table 2 below by month.

Table 2 – Total Monthly ROM Coal Production (Bowens Road North/Roseville West/Codisposal/Duralie)

MONTH ROM PRODUCTION

(tonnes) July 2011 249,270 August 2011 212,111 September 2011 248,527 October 2011 257,460 November 2011 310,019 December 2011 340,999 January 2012 272,278 February 2012 336,859 March 2012 396,511 April 2012 299,127 May 2012 358,355 June 2012 244,983

Total ROM production for the 12 month reporting period was 3.526 million tonnes. This production total includes ROM production from the nearby Duralie Open Cut railed to Stratford for processing at the CHPP. ROM production for BRN, Roseville and Codisposal excluding Duralie for the reporting period was 1.056 million tonnes. Total ROM production for BRN alone during this reporting period was 0.320 million tonnes. Total coal railed for the reporting period was 2.137 million tonnes. Total waste mined (BRN/Roseville/Codisposal) during the reporting period was 4.246 million bcm. ROM production forecast for Bowens Road North for the next reporting period is 0.45 million tonnes. This will consist of approximately 0.13 million tonnes of Marker seam coal and 0.32 million tonnes of Bowens Road Seam.

2.3 COAL HANDLING AND BENEFICATION

2.3.1 Washery Throughput Coal is processed in a 600 tonnes per hour (tph) coal handling and processing plant (CHPP) with coarse coal (ie 50mm down to 1mm) treated using dense medium cyclones (50mm to 1.5mm), “teeter bed” separator/spirals (1.5mm to 0.4mm) and floatation (0.4mm to <0.1mm). The CHPP operates on a two shift, 7 days per week basis. Feed to the CHPP is by front end loader based on blending of coal plies from the ROM stockpile. The essential elements of the CHPP and their design capacities are as follows: ROM coal production 3.79 Mtpa CHPP feed rate 600 tph Product coal 2.4 Mtpa Train load out rate 3,000 tph Reclaimed previously emplaced CHPP reject material was also used as feed for the CHPP, either as an addition to BRN Pit ROM coal or as a sole feed material during the reporting period.



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2.3.2 Saleable Coal Production Annual production for the 2011/2012 financial year was 2.174 million tonnes comprising 0.956 million tonnes of coking coal and 1.218 million tonnes of thermal coal. Actual coal production to date by month for the full reporting period is shown in Table 4.

Table 4 - Product Coal Produced by Month

MONTH MONTHLY PRODUCT COAL (tonnes) Coking Coal Thermal Coal Total Product Coal

July 2011 73,772 92,187 165,959 August 2011 51,399 82,361 133,750

September 2011 63,743 86,311 150,054 October 2011 53,433 104,941 158,374

November 2011 93,743 106,224 199,967 December 2011 89,800 93,248 183,048 January 2012 76,949 126,079 203,028 February 2012 111,764 90,492 202,256

March 2012 77,799 121,997 199,796 April 2012 108,480 86,466 194,946 May 2012 76,673 131,033 207,706 June 2012 78,613 96,721 175,334

2.3.3 Coal Stockpile Capacity (ROM & Product) ROM coal stockpile capacity 150,000 t Product coal stockpile capacity 400,000 t

2.3.4 Product Transport There were no changes to the mode of product transport during the reporting period. All saleable coal is transported from site by rail. A total 543 trains were loaded at SMC during the reporting period. A full list of trains loaded is provided in Appendix 2.

2.4 WASTE MANAGEMENT AND RECYCLING

2.4.1 Chemical Characterisation of Residues During the reporting period the CHPP received coals from the Stratford Co-disposal reclaim area, Bowens Road North pit, Roseville West pit and the Duralie mine. CHPP waste material generated from the Stratford and Bowens Road North mines has been previously analysed. Geochemical testing has indicated that: • Mudstone, sandstone and clay spoil materials are classified as non-acid forming; • Carbonaceous spoil materials are classified as potentially acid forming with a low capacity to

generate acid; • Dense Media Bath reject materials are classified as non-acid forming; and • Co-disposed slimes are likely to be non-acid forming whilst co-disposed beach deposit materials

are potentially acid forming with a low capacity to generate acid.



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CHPP reject generated from the Duralie mine is fully described in Appendix A of the 1998 Statement of Environmental Effects for the unloading and processing of Duralie coal. It was concluded that:- • The rejects will have relatively high total sulphur content and low to negligible acid neutralising

capacity; material classified as potentially acid forming with high capacity to generate acid; • Column test results indicate that if left untreated and exposed to air and moisture, Duralie rejects

will generate acid and high sulphate sulphur concentrations in leachate and runoff water; • Testing with different lime dosing rates indicated that effective pH and sulphate control could be

achieved with dosing rates in the range 5-10 kg/tonne range; and • Sulphate generation rates were found to be highly sensitive to pH (increasing as pH values fell). At

pH values above about 4, sulphate generation is controlled by solubility. Reference should be made to the Gloucester Valley Coal Mine, Life of Mine Reject Disposal Plan, Version 5 (May 2003 and the SCPL Life of Mine Rejects Plan (approved 2010) (Gilbert & Associates 2009) for a detailed description of reject management at the Stratford Mining Complex. In general the rejects, both coarse and fine fractions, are pumped via pipeline from the CHPP to the Stratford Main pit where they are deposited below final void ground water levels.

2.4.2 Sewerage Treatment and Disposal Sewage treatment at the mine site consists of: • A “Bio-Treat” tank system located at the main site office. The system works on the combined

principles of primary settlement and aerobic treatment. Treated effluent is then discharged via a spray system into a grassed area near the office. During the reporting period an additional line of irrigation was installed within the existing effluent disposal area;

• A similar primary treatment and aeration system located at the CHPP. Treated effluent is

pumped onto a vegetated area south of the CHPP incorporating the CHPP noise bund; • A septic tank system for treatment of sewage from the Training Building. “Grey water” is

discharged via a spray system into a grassed area near the main site office. • An active aeration system for treatment of sewage from the bath-house complex. Secondary

stage treated effluent is discharged via the spray irrigation system servicing the main office building;

• A one (1) man septic tank system and transpiration trench located at the Rail Load-out Bin; and • A septic system at the BRN field crib rooms. These sewage treatment facilities are registered with Gloucester Shire Council.

2.4.3 Fuel Containment Fuel (diesel) at the mine site is stored within a fuel farm facility (adjacent to the Workshop). A Dangerous Goods Notification was held for this facility during the reporting period. The fuel farm contains one (1) 110,000 litre above ground diesel tank. A concrete bund surrounds the tank. Rainfall and any spilt fuel within the bunded area is directed to a collection sump from where it is pumped to a reclaimer system located in the lube bay. The fuel farm bulk fuel and oil storage area was upgraded during the 2007/08 reporting period. Works included the placement of a concrete apron adjacent to the fuelling station and spray guarding on the eastern side of the bulk fuel storage



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bunding. The CHPP area has two above ground tanks containing chemical reagents, a 10,000 litre tank contains diesel and a 20,000 litre tank contains a frother, “Metfroth”.

2.4.4 Oil and Grease Containment and Disposal Bulk oil is stored within a bunded area. Used engine oils (lubricating oils) and hydraulic oils are recovered during plant and vehicle servicing in the workshop and in the field. Within the workshop area, a separate bunded area holds an 18,000 litre waste oil tank and oil/grease drums. The lube bay is fitted with a silt trap and oil separator. A wash pad facility also contains a silt trap. Waste oil is removed from site by a commercial contractor for subsequent recycling off-site on a regular basis. Oil for gearboxes and lubrication at the CHPP is stored in drums in a concrete bunded area. All contractors are required to manage and remove from site all waste oil generated during their operations. Used oil filters are stored within wheelie bins and removed from site by a suitably licensed contractor.

2.4.5 Used Tyres Used tyres generated on-site are disposed of by burial at the mine site within backfilled sections of the Open pits. • Tyres are placed in discrete lots and buried with a minimum cover of 5 metres;

• Disposal sites are adequately recorded for future reference. The depth of disposal is also

recorded; • Tyres stockpiled for disposal are adequately protected from fires; and

• Tyres disposed of are not placed with any other combustible material.

2.4.6 Rubbish Disposal All domestic rubbish (e.g. food scraps, paper etc) is deposited in industrial rubbish bins that are periodically emptied by a waste contractor. Scrap metal at the CHPP and Ditchfield workshops is collected and placed in bins that have been provided by a scrap metal merchant. The merchant collects the scrap metal whenever the bins become full. Used 205L drums are periodically collected by a licensed contractor. A wire bin has been placed at the shift start area for aluminium drink cans which are collected for recycling. Paper and cardboard is collected for recycling from the Ditchfield workshop, CHPP and Main Office building. Four mixed recycling bins are located at the main office. All contractors are responsible for the collection and removal of their own rubbish.



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2.5 WATER MANAGEMENT The main principles of the water management system on-site are: • Diversion of clean water around disturbed areas; • The capture and storage of any water falling on disturbed areas in a dirty water storage system; • Water usage on-site designed to use dirty water first; • No sediment laden water having a high suspended solids concentration being discharged off

site. However, this on occasions is not possible due to the inability to retain sediment water on site for sufficient time to allow sufficient settlement of fine suspended solids (typically clay particles). It should also be noted that the dispersible nature of exposed clays on site hinders settlement. Any discharge of sediment laden water from site is conducted in such a manner as to mitigate the likelihood of suspended solids reaching offsite streams and routine sampling/analysis is undertaken;

• Since the cessation of mining within the Stratford Main Pit in May 2003 the void has become

available for the storage of excess mine waters. The availability of the Main Pit for water storage effectively addressed the short term water balance issues faced by the operation over previous years; and

• Due to an annual excess of water, SCPL investigated the establishment of irrigation upon

selected areas of the SCM waste emplacement area. Following this investigation, and regulatory approval, a centre pivot irrigator was installed to irrigate an area of rehabilitated waste emplacement.

2.5.1 Water Supply and Demand The main water supply storage on-site for the CHPP is the Return Water Dam (RWD), located to the north of the Industrial Area. The RWD is one of three permanent mine water storages on-site. Water used by the CHPP is drawn from the RWD and comprises water pumped from the Co-Disposal facility, pit produced water, water from specific sediment dams and surface water runoff from the Co-Disposal area. The principal water losses in the CHPP water circuit are: − Loss of water to co-disposal material (water locked up in rejects, lost as seepage or

evaporation). − Evaporation from water bodies. − Water retained in product coal and railed off site. Estimates of water losses from the CPP circuit are in the order of 5 ML per week with plant throughput in the order of 200L/s. The RWD storage capacity is nominally 500 ML. The Stratford East Dam (SED) is another permanent mine water storage facility on site. The SED spillway is currently at RL 164.5m with a water holding capacity of 2,850 ML. The third permanent water storage body is the Stratford Main Pit. The Main Pit has a holding capacity of 37,000 ML to RL 115. At the commencement of the reporting period the SED, RWD and Main Pit contained 1,758 ML, 430 ML and 19,435 ML (less reject volume), respectively. At the completion of the reporting period the Stratford East Dam, Return Water Dam and Main Pit



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contained 1,929 ML, 313 ML and 8,935 ML (stored water and submerged reject material) respectively. Hence, water stored within the SED increased by 171 ML, the RWD decreased by 117 ML and the Main Pit decreased by 10,500 ML (less reject volume). No mine water was disposed of to watercourses during the reporting period under OEH approval. In December 2009, Gilbert & Associates assisted SCPL in preparation of a Life of Mine Reject Disposal Plan for the Stratford Mine. As part of preparation of this Plan, the site water balance was modelled. Following initial modelling, SCPL devised the following modifications to the future site water management strategy:

1. Upon conclusion of mining operations in the Bowens Road North open cut (approximately at the end of 2013), water would be pumped from the Main pit to Bowens Road North. The aim of this would not only be to reduce the volume of water held in the Main pit, but to rapidly inundate Bowens Road North as a means of mitigating the potential for generation of poor quality water in this open cut. At present, it is estimated that more than 8,500 ML of storage volume would be available in Bowens Road North up to RL 112. Pumped transfer would be managed to maintain freeboard in Bowens Road North to limit the risk of spill due to high rainfall.

2. At the same time as commencing water transfer to Bowens Road North open cut, water would be pumped from the Main pit to the Stratford East Dam, making use of this dam’s available storage capacity. Pumped transfer would be managed so as to maintain adequate freeboard in the Stratford East Dam against high rainfall.

3. Irrigation of water from the Stratford East Dam over waste emplacement areas commenced in the second half of 2011. Irrigation will occur on an area of rehabilitated waste emplacement adjacent to the Stratford East Dam. Irrigation will be governed by soil moisture, with irrigation suspended during wet weather or in periods following rain until soil moisture levels fell to levels low enough such that irrigation would not lead to direct runoff. Runoff from irrigation areas will be directed to the Stratford East Dam. Reducing the volume of water held in the Stratford East Dam by irrigation would increase its capacity for storage of water transferred from the Main pit.

Site water balance modelling has concluded that water storage capacity on site, under assumptions including the strategy outlined above, would be sufficient to accommodate disposal of washery reject material within the Main pit until at least 2020. A copy of the Life of Mine Reject Disposal Plan (Gilbert & Associates 2009) is available on the Stratford Coal Limited website (www ). .stratfordcoal.com.au

2.5.2 Water Management Review An independent Water Management Review (Gilbert & Associates, 2012) of the Stratford Mine water management system, with regard to site water balance, was conducted for the 2011 calendar year. A comparison was made between the water management system performance and the predictions made in the Bowens Road North Environmental Impact Statement (EIS) and the Stratford Project EIS. Results and conclusions from the assessment are provided in this section. Quantitative water balance The water management system at the Stratford mine has operated under a surplus water balance, which means that over time there has been a trend for more water to report to site storages from the mine workings and associated project site catchments than is required to support processing and mining activities. Bowens Road North Open Cut A main pit water balance analysis was undertaken for the BRNOC, using data recorded during 2011, to assess the relative contributions of surface water and groundwater sources to mine inflows (i.e. the

http://www.stratfordcoal.com.au/�



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relative contribution of rainfall runoff versus groundwater seepage into the pit). The water balance analysis involved estimating surface water inflows to the mine, from the various sub-catchment types that contribute water to the pit, using recorded daily rainfall and runoff coefficients which reflect the probable yield of these sub-catchment types. Groundwater inflow rates were initially set to EIS predicted rates and then adjusted along with runoff coefficients to obtain a reasonably close match between modelled pit inflows and recorded mine dewatering volumes. The comparison was conducted on a cumulative basis (i.e. cumulative mine inflows ((predicted from the water balance analysis)) were compared with the pattern of cumulative mine dewatering volumes over the year. A reasonably good match between modelled and monitored volumes was noted. Modelling and analysis of recorded data over the 2011 calendar year indicate that the volume of groundwater reported to the BRNOC pit sump was approximately 222 ML. Direct comparison between Bowens Road North EIS predictions of groundwater inflow and estimated groundwater inflow rates for 2011 was not possible because EIS predictions were not made for 2011 (Year 9 of operations). The groundwater inflow rate predicted from previous water balance analyses has been below EIS predictions since 2005 and the estimated, at the end of 2011, is well below the Year 7 EIS prediction. The key water management conclusion in the EIS, that following completion of mining operations in the Stratford Main pit there would be negligible risk of spill over the life of the Bowens Road North mine operation, remains valid. Roseville West Pit A main pit water balance analysis was undertaken for the Roseville West Pit using data recorded during 2011 to assess the relative contributions of surface water and groundwater sources to mine inflows. The Roseville West Pit Modification Statement of Environmental Effects (SEE) stated that groundwater inflows for the pit are likely to be small and insignificant in terms of the overall site water balance. The water balance analysis involved estimating surface water inflows to the mine from the various sub-catchment types that contribute water to the pit using recorded daily rainfall multiplied by runoff coefficients which reflect the probable yield of these sub-catchment types. Groundwater inflow rates were adjusted along with runoff coefficients to obtain a close match between modelled pit inflows and recorded mine dewatering volumes. The comparison was again conducted on a cumulative basis (i.e. cumulative mine inflows ((predicted from the water balance analysis)) were compared with the pattern of cumulative mine dewatering volumes over the year. Over the 2011 calendar year, a total volume of 324 ML was monitored transferred to the Return Water Dam. The volume of groundwater calculated reporting to the Roseville West pit sump in 2011 was approximately 142 ML (this would include a component of seepage from the waste rock emplacement in the adjacent Roseville Extended Pit). There were no quantitative predictions made prior to mining of groundwater inflows for comparison. Spill Risk Assessment The spill risks for the BRNOC and Roseville West Pit and the Stratford Main Pit void were assessed using the SMC integrated water balance model. The modelled spill risk for the BRNOC, the Roseville West Pit and Stratford Main Pit void was less than 1% (i.e. no spill simulated in all climatic sequences). The maximum volume simulated in the Bowens Road North Open Cut was 219 ML compared with a calculated capacity of more than 9000 ML (based on December 2011 survey data). The maximum volume simulated in the Roseville West Pit was 192 ML compared to a calculated capacity to spill level of more than 6000 ML (based on December 2011 survey data). The maximum modelled water volume held in the Stratford Main Pit void was approximately 11,000 ML compared to a minimum estimated pit capacity (at the end of 2013) of approximately 20,900 ML. The model indicates, on average, a fairly steady volume of water stored in the Stratford Main Pit void with time. The modelled spill risk for the Stratford East Dam was less than 1% (no spills simulated in 124 sequences) with no pumping to the dam while irrigation water is pumped out of the dam, resulting in a simulated decrease in stored water volume with time. Model simulations also indicate that the spill risk from the Return Water Dam depends on how it is managed with regard to freeboard. The estimated full capacity of the dam is 335 ML. Maintaining a



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freeboard of at least 135 ML results in less than 1% spill risk. Water balance modelling also indicates that the risk of having insufficient water for mine dust suppression and/or coal washing during the remaining mine life is low (less than 1%). As demonstrated by the water balance assessment, there is no evidence to suggest that the overall EIS predictions in regard to water management (that following completion of mining at Stratford Main Pit there would be a negligible spill risk over the life of the Bowens Road North mining operation) will not be met.

2.6 HAZARDOUS AND EXPLOSIVES MATERIALS MANAGEMENT Hazardous materials are stored and used in accordance with relevant material safety data sheets (MSDS). No bulk explosive is stored at site.

2.6.1 Status of Licences Workcover NSW Dangerous Goods Notification 35/030521 applies to the Stratford Coal Mine.

2.6.2 Material Safety Data Sheets MSDS’s are available at the CHPP and Ditchfield Workshop. Persons bringing hazardous substances on the mine site are also required to provide a current MSDS for that substance. Currency is deemed to be a five year period prior to when the substance is brought to site.

3. ENVIRONMENTAL MANAGEMENT AND PERFORMANCE

3.1 CORPORATE ENVIRONMENTAL POLICY Gloucester Coal’s Environmental Policy states that:

It is the intention of Gloucester Coal to maximise the recovery of economic coal reserves and continue to supply domestic and export markets with energy and coking coals whilst protecting the environment for future generations.

The principles of the Gloucester Coal Environmental policy are:

• Environmental management is the responsibility of every employee. For this

reason commitment to the environmental management program by all personnel is a high priority.

• Environmental performance will be assessed regularly and relevant information will be distributed to the local community through the Consultative Committees. Open communications will be encouraged.

• Areas disturbed by operations and the impact on the surrounding environment is to be minimised at all times.

• The best practical technologies for rehabilitation, water quality protection and coal preparation plant reject management are to be utilised to meet current and anticipated environmental standards.

• Appropriate standards for rehabilitation will be implemented to ensure minimal visual impact and achievement of a stable landform, along with the preservation of fauna and flora and downstream water quality.



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3.2 Review of Performance A review of environmental performance in relation to OEH EPLs and Development Consent Conditions is summarised below. This performance is further discussed in the sections on environmental management activities and environmental monitoring.

3.2.1 Environment Protection Licences 5161 and 11745 • All monitoring has generally been carried out in accordance with licence conditions, • Monitoring of dust, water quality, noise and blasting have been carried out in accordance with a

schedule agreed to by OEH. • Records of environmental monitoring activities have been kept. • A record of alleged pollution complaints has been maintained including the date and time of the

complaint, method of complaint lodgement, personal details of the complainant (name, telephone number and address), the nature of the complaint, action taken and any follow-up contact with the complainant.

• A copy of this Annual Review has been forwarded to the OEH as well as other agencies as

listed in the Development Consent. These agencies are the Department of Trade and Investment (DTI), Gloucester Shire Council (GSC), SMC Community Consultative Committee, Department of Planning & Infrastructure (DoPI) and National Parks & Wildlife Service (NPWS).

• Dust suppression measures are in place. Dust monitoring to date (dust deposition gauges and

high volume (PM(10) air samplers) shows that current dust suppression systems are effective and dust levels are generally below the conditions of consent limits. On several occasions during the reporting period an exceedance of the consent limit for dust deposition occurred. However, on the basis of observations and combustion testing, none of these results were considered to constitute an exceedance of the consent limit. Monitoring results during the reporting period have demonstrated compliance of the SMC with the air quality management criteria.

• Quarterly noise compliance monitoring was carried during September 2011, December 2011,

March 2012 and June 2012. On the basis of calculated noise measurements, daytime, evening and night time noise compliance was achieved for all noise surveys with the exception of one instance of excursion at the Isaac (South) location during the evening survey in September 2011. Stratford Coal Pty Ltd has a private agreement in place with Isaac (South) hence noise limits do not apply at this residence. Also, an excursion of mine noise levels above noise limits was measured at the Van der Drift residence during the day survey in December 2011. Reviewing the previous noise monitoring data for the last 2 years at this location, which shows no similar excursion, it is clear that this is not a systemic breach of the noise criteria provided in the applicable planning approvals and EPLs. Accordingly, the above results do not constitute a breach of the noise criteria provided in the EPL’s.

• Air quality related Pollution Reduction Programme conditions were added to EPLs during the

reporting period.

3.2.2 Development Consent or Approval Conditions A review of 2011/12 quarterly noise survey results in light of the Stratford Coal Mine July 2010 Modification and the 2010 Development Consent DA No. 23-98/99 indicates that survey results were consistent with Modification predictions and compliant with the Development Consent noise criteria with the exception of one instance of excursion at the Isaac (South) location during the evening survey in September 2011. Stratford Coal Pty Ltd has a private agreement in place with Isaac (South) hence noise limits do not apply at this residence. Also, an excursion of mine noise levels above noise limits was measured at the Van der Drift residence during the day survey in December 2011. Reviewing the



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previous noise monitoring data for the last 2 years at this location, which shows no similar excursion, it is clear that this is not a systemic breach of the noise criteria provided in the applicable planning approvals. Accordingly, and in compliance with the approved Stratford Noise Management Plan (Vipac 2006) and the INP, the above results do not constitute a breach of the noise criteria provided in the applicable planning approvals.

3.3 METEOROLOGICAL MONITORING A meteorological station (i.e. weather station) is operated at the mine site as required by the Development Consent. The location of the station is shown on Figure 2 (Appendix 1).

3.3.1 Rainfall Table 5 below summarises the rainfall record obtained from the site Weather Station (tipping bucket) rain gauge during the reporting period. The graphical representation of monthly recorded rainfall during the reporting period is provided in Appendix 3.

Table 5 - Stratford Mine - Monthly Rainfall Records

MONTH YEAR DISTRICT

2012 (To Date) 2011 AVERAGE Monthly

Total (mm) No. of Rain

Days/Month2 Monthly

Total (mm) No. of Rain

Days/Month2 1908-2007

January 91.6 12 61.4 10 113.7 February 284.2 15 84.0 9 114.8 March 60.8 15 141.8 17 129.3 April 53.6 12 130.2 15 78.2 May 31.8 7 81.6 12 71.6 June 76.8 20 232.2 13 69.4 July 86.6 11 52.7 August 59.8 13 47.1 September 38.8 7 50.5 October 91.4 12 65.5 November 145.2 14 82.7 December 158.2 16 102.2 TOTAL FOR YEAR

598.8 81 1311.2 149 977.7

Notes: 1. No. of Rain Days/Month - the number of days in the month on which rain fell. 2. When tipping bucket rain gauge data used, a “rain day” by definition requires a

minimum recording of >0.20mm comprising dew, heavy fog or light rain (or a combination thereof).

The 2011 calendar year rainfall total was higher than the long-term district average. Nine of the twelve months in this period exceeded their respective long term average. The three wettest months for the AR reporting period were (in order, wettest first): February 2012, December 2011 and November 2011. Reciprocally, the three driest monthly periods were (in order of increasing rainfall): May 2012, September 2011 and April 2012.

3.3.2 Wind Speed and Direction Table 6 below indicates the monthly minimum, average and maximum wind speeds for the period July



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2011 to June 2012, inclusive. The graphical representations of the monthly minimum, average and maximum wind speeds recorded for each month during this period are provided in Appendix 3.

Table 6 - Monthly Average and Maximum Wind Speeds

MONTH MINIMUM WIND SPEED

RECORDED (m/s)

AVERAGE WIND SPEED (m/s)

MAXIMUM WIND SPEED

RECORDED (m/s)

July 2011 0 1.9 17.0 August 2011 0 1.7 10.7 September 2011 0 2.6 19.3 October 2011 0 2.0 13.2 November 2011 0 2.3 15.8 December 2011 0 2.2 18.5 January 2012 0 2.3 15.1 February 2012 0 1.5 13.0 March 2012 0 1.7 12.5 April 2012 0 1.8 14.7 May 2012 0 1.6 12.5 June 2012 0 1.5 12.5

Table 7 provided below summarises the dominant wind directions for each month from July 2011 to June 2012, inclusive. Monthly wind roses for the reporting period are provided in Appendix 3.

Table 7 - Dominant Wind Directions by Month

MONTH DOMINANT WIND DIRECTIONS July 2011 NNE, S August 2011 NNE September 2011 N, NNE October 2011 NNE, S, SSW November 2011 NNE December 2011 S January 2012 S February 2012 S March 2012 S, SSW NNE April 2012 S, NNE May 2012 N, NNE June 2012 S

3.3.3 Temperature Table 8 summarises monthly air temperatures for the reporting period.



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Table 8 - Monthly Minimum, Average and Maximum Air Temperatures

MONTH MINIMUM AIR TEMP

RECORDED (degC)

AVERAGE AIR TEMP

(degC)

MAXIMUM AIR TEMP

RECORDED (degC) July 2011 -3.5 9.8 22.7 August 2011 -0.5 11.2 25.2 September 2011 1.2 14.9 31.8 October 2011 2.8 16.0 32.2 November 2011 11.4 20.9 36.4 December 2011 8.1 18.4 33.8 January 2012 9 21.6 36.2 February 2012 12.4 20.9 33.4 March 2012 9.8 19.5 34 April 2012 5.3 17.1 29.7 May 2012 0 11.9 28.2 June 2012 -3.1 10.5 21.5

The graphical representation of the daily minimum, average and maximum atmospheric temperatures recorded for each month during this period is provided in Appendix 3.

3.4 AIR QUALITY

3.4.1 Dust Control Procedures At the CHPP, potential dust emission sources are controlled by water sprays at a number of locations: • Run of Mine (ROM) Coal Bin • Crusher Station • Stamler Feeder/Breaker • Product Coal Stockpile (overhead sprays on the conveyor) Sprays are automated in most instances by a solenoid connected to the weight of material on the conveyor belt. Sprays at the ROM Bin, Crusher Station and Stamler operate when 50t/hr of material is on the belts. The product coal stockpile sprays are located on the overhead conveyor system. A wind speed/direction device provides information to a computer located in the coal preparation plant control room that can electrically activate solenoids valves. The valves open and close in a programmed cycle that alternatively activates sprinkler heads above the stockpile. The dust suppression system operates when the wind speed exceeds 5.6m/s. The following dust control procedures are used during mining operations: • Minimising topsoil stripping operations ahead of the pre-strip to minimise the area of exposed

ground; • Restricting the extent of area exposed to dust generation; • Minimising truck overloading and spillage onto haul roads; • Fitting drills with dust suppression equipment;

• Regular maintenance of hauls roads;

• Prompt rehabilitation of disturbed ground; and



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• Watering of disturbed areas at the end of shift on Saturdays to help mitigate any potential dust generation on Sundays and on public holidays when the mine is not operating (as necessary).

3.4.2 Dust Monitoring and Criteria Stratford Coal Pty Ltd monitors air quality (dust) surrounding the mine site by means of a network of seven (7) static dust fallout gauges, five (5) high volume PM10 air samplers and a meteorological monitoring station (i.e. weather station). The locations of these monitoring sites are shown on Figure 2 (Appendix 1). Monthly dust fallout levels are measured so that dust deposition rates in g/m2/month can be determined at or near seven (7) residences that surround the mine site. The annual average condition of consent limit for dust deposition is 4.0g/m2/month. Petrographic (evaluation for the presence of coal) analysis is undertaken on dust collected from sampling locations D5 and D6. The high volume air samplers (HVAS) (PM10), - also used for total suspended particulate (TSP) estimation - are located near Stratford Village, Craven Village, Clarke residence, ex-Ellis residence and Cassar residence. The Cassar HVAS was installed in 2008 to provide background data and is not a licensed location. Sampling is undertaken over a 24 hour 6 day week cycle in accordance with AS 2724.3. The OEH goal for PM10 air quality is an annual average limit of 30ug/m3/day and a National Environmental Protection Measure (NEPM) 24-hour average limit of 50ug/m3/day. The National Health and Medical Research Council (NHMRC) goal for TSP air quality is an annual average of 90 ug/m3.

3.4.3 Review of Dust Monitoring Results

3.4.3.1 Dust Deposition Gauges Dust levels recorded were all less than 4.0g/m2/month with the exception of gauge D7 in November and D7 and D9 in April. All results exceeding 4.0g/m2/month were attributed to non-dust contamination. The annual average dust levels did not exceed the conditions of consent annual average limit of 4g/m2/month for any deposition gauge. Graphical representation of the dust deposition results and annual averages for the seven (7) dust deposition gauges (D5-D11) are provided within Appendix 4. The percentage of coal recorded within insoluble matter from locations D5 and D6 was 10% or less across all sampling months. The dust deposition monitoring results are similar to results presented in previous reports and concur with predictions made in the Stratford Coal Mine EA (2010) that dust deposition levels would not exceed relevant air quality criteria at any residence.

3.4.3.2 High Volume (PM10) Dust Samplers Figure 4-3 (Appendix 4) shows the HVAS monitoring results in µg/m3/day (24 hours) for the monitoring sites at Stratford, Craven, Clarke, Ellis and Cassar for the reporting period. All monitoring results were less than the OEH nominated limit of 50µg/m3/day. Figure 4-4 (Appendix 4) shows the running/cumulative average for the five HVAS during the reporting period. Annual averages for all sampling locations were below the 30 µg/m3/day OEH recommended limit.



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3.4.3.3 High Volume (TSP) Dust Calculation Figure 4-5 (Appendix 4) shows the Total Suspended Particulate estimates across the five HVAS during the reporting period. A local PM10:TSP relationship was previously established (refer previous ARs) to support derivation of TSP results from actual reporting period PM10 measurements. The OEH Impact Assessment Criterion of 90 ug/m3 was not exceeded during the reporting period. The HVAS monitoring results are generally similar to those reported in previous ARs and concur with predictions made in the Stratford Coal Mine EA (2010) that particulate levels (PM10 and TSP) would not exceed relevant air quality criteria at any residence.

3.4.4 Complaints One (1) dust related complaint was received during the reporting period. Monitoring results to date (high volume air sampling and dust deposition gauges) indicate that dust emissions from the mine site are not significant and are below permitted levels.

3.5 SEDIMENT AND EROSION CONTROL Sediment generation and erosion is primarily controlled by: • Timely progressive rehabilitation and vegetation establishment on disturbed areas (e.g.

completed sections of the overburden dump) to minimise the area exposed to erosion; • The direction of runoff from disturbed areas into sediment dams for settlement of suspended

solids; and • The placement of silt fences down slope of other disturbed areas (e.g. down slope of topsoil

stockpiles before a grass cover has been established). All sediment dams and silt fences are monitored on a minimum quarterly basis and maintained. Sediment dams are cleaned out when the storage volume is reduced by sediment deposition (i.e. when 30% of storage volume is lost to sediment build up) and inspected after major rainfall events. Silt fences are cleaned out and/or repaired to maintain their effectiveness. Areas under rehabilitation are stabilised by structural controls such as bench drains and contour banks (if required) to break up effective slope length exposed to erosion. Final slopes will generally not exceed 14 degrees in order to limit the potential for erosion and sediment generation. For any final slope exceeding 14 degrees, Department of Trade & Investment (DTI) approval is obtained.

3.6 SURFACE WATER

3.6.1 Surface Water Management Surface water management is divided into the management of clean and dirty water as outlined below. Dirty water comprises both mine water and sediment laden/turbid water. Section 3.6.1.3 covers management of runoff from the overburden dump and sediment and erosion control.

3.6.1.1 Clean Water Management The key principle of clean water management is the segregation of clean water from dirty water by the construction of diversion drains around disturbed areas, thereby minimising the quantity of dirty water generated.



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Surface water controls aim to prevent clean runoff water from entering the open cut mining, overburden/interburden dumping areas and rejects disposal areas, at various stages during mine life. The main structures are: • Diversion drains/bunds on the eastern and western side of Stratford site, designed to divert

clean water runoff around disturbed areas. • Flood control embankments north of the Main Pit and east of the backfilled Roseville Pit which

are/were designed to reduce the likelihood of floodwaters within Avondale Creek entering either pit;

• A 1:100yr ARI flood control bund around the northern end of the former Roseville Pit extension;

• A 1:100yr ARI flood control bund around the northern end of the Roseville West Pit;

• A culvert under the BRN haul road to allow for clean water runoff into Avondale Creek;

• Culverts under the Main Coal Haul Road and Roseville Pit Haul Road which allows Avondale

Creek to flow through the site; • A clean water interception dam located east of the BRN waste dump to prevent waters ponding

against the dump; • Various runoff control drains/bunds about disturbed areas and overburden dumps designed to

divert clean water runoff around active mine areas; and

• A 1:100yr ARI flood control bund around the southern end of the BRN Pit.

3.6.1.2 Mine Related Water Management Mine related water management refers to the control, collection and re-use of water which may have become contaminated by mining operations and associated activities or which by its nature is considered to be undesirable for release to the environment. Mine related water comprises mine water and sediment laden/turbid water. Mine water is water that has come into contact with mining activities. Sediment laden/turbid water has come into contact with disturbed areas but predominantly not core mining areas. Mine related waters are characterised by higher salinity, lower pH, elevated suspended solids and/or higher turbidity than clean water runoff. The main objectives of the mine related water control facilities are: • Segregation of clean water from mine related water, to minimise the quantities of mine related

water to be managed; • Reuse of mine related water (washing coal); and

• Preventing the release of mine water from site.

The principal sources of mine related water are: • Rainfall runoff in mining pits mixing with particulate matter and with relatively saline

groundwater; • Groundwater flowing into mining pits;

• Rainfall runoff from active sections of the overburden dump;



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• Rainfall runoff from the Industrial Area; • Rainfall runoff from haul roads;

• Runoff and seepage from co-disposal areas; and

• Direct rainfall falling on dirty water storages.

Mine related water uses and losses are: • Co-disposal material (water locked up in rejects, lost as seepage or evaporation);

• Evaporation and seepage losses from water storages;

• Haul road dust suppression; and

• Water retained in product coal and railed off site.

The main permanent mine related water storages on site are the RWD, SED, Bowens Road West Pit (Parkers Pit) and the Stratford Main Pit. The Stratford Main Pit holds mine related water due to the active co-disposal process. Due to water being excess to need, management in past years has focused on maximising water use/loss. The future need to discharge waters from the Stratford site is expected to be limited due to the availability of the Stratford Main Pit for water storage and the installation of irrigation upon approved areas of the SCM waste emplacement.

3.6.1.3 Overburden Dump Water Runoff Management During the reporting period waste rock was placed to the south of the Main Pit and outside the BRN pit. Active dump runoff management involves directing runoff from active dump areas to dedicated waste dump runoff sediment dams. The main sediment dams for the BRN waste dump are Sediment Dam 4 (SD4) and BRN Pit itself since it accepts runoff from the adjacent out of pit dump. A small volume of water also collects on the eastern side of this dump. This water is discharged to land, if required, given acceptable water quality or alternately pumped into the catchment of SD4. Sediment dam sizing is based on: − Sufficient capacity to hold runoff from a 1 in 20 year, 1 hour duration rainfall event (54.88mm

equivalent) falling over the full active dump area; and − Sufficient area to provide for settling/sedimentation of any particles coarser than fine silt size in

a 1 in 20 year, 1 hour duration rainfall event.

3.6.1.4 Haul Road Runoff Management Haul road runoff is generally separated from overburden dump runoff as haul road runoff tends to be more saline than dump runoff. This is likely to be due to accumulation of salts from ongoing water spraying for dust suppression and coal spillage on the haul roads. All runoff from the Main Coal Haul Road together with the southern end of the Roseville Haul Road is directed to the Haul Road Sediment Dam (SD14). Runoff from the Western Haul Road flows to the Western Sediment Dam (SD13) and Stratford Main Pit. Runoff from the northern end of Roseville Haul Road reports to the Roseville West pit area. Runoff from the southern end of the haul road



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reports to the Roseville South Sediment Dam (SD12). Runoff from the BRN Haul Road reports to sediment dams SD1-SD4. On the basis of quality, water in these dams is either pumped to the Main Pit for use as CHPP make up water or allowed to discharge to land. De-silting of haul road dams is undertaken when significant siltation has occurred (nominally 30% silt by volume or obstruction of outlet structure as required by the Environmental Protection Licence). The suspended sediment load in runoff water entering these dams can be high due to the mudstone used to construct and sheet the haul roads and the action of the haul trucks on the mudstone during wet weather. The haul road dams are designed to store all runoff from a 1 in 20 year 1 hour rainfall event falling on the road catchment areas with 90% reporting as runoff.

3.6.2 Surface Water Monitoring Stratford Coal Pty Ltd has a network of ten (10) main routine monitoring sites as shown Figure 2 (Appendix 1). These sites are the same as those used during the baseline studies for the Stratford and BRN Environmental Impact Studies. The sites and their locations are shown in Table 9.

Table 9 - Routine Monthly Surface Water Monitoring Sites

SITE AREA PROPERTY HYDROLOGICAL LOCATION W1 Wenham Cox Road GLENAVON Avon River upstream of the mine (i.e. upstream of

junction with Dog Trap Creek) W2 Marengo BIGNALL Avon River downstream of the mine (i.e.

downstream of junction with Dog Trap Creek) W3 Dog Trap Creek Ex-ELLIS/SCPL Upstream Dog Trap Creek (above junction with

Avondale Creek) W3A Dog Trap Creek Ex-ELLIS/SCPL Upstream Dog Trap Creek (above junction with

Avondale Creek) and Upstream of BRN Operations. W4 Avondale Swamp Ex-ATKINS/AGL Dog Trap Creek downstream of junction with

Avondale Creek W5

SWQ2 Wenham Cox Road SCPL Avondale Swamp (Creek) downstream of mine and

upstream of junction with Dog Trap Creek W6 Parkers Road SCPL Upstream of Mine on Avondale Creek W8 Bowens Road SCPL Avondale Creek in the centre of operations W9 The Glenn Road SCPL Upper Avondale W10 Bowens Road SCPL “Lemon Tree” Creek upstream of Avondale Creeks

junction. A variation to EPL 5161 in 2003 modified the Stratford water sampling regime to align with the program approved for the BRN project ie water sampling at the listed sampling locations after a rainfall event of greater than 25mm in any 24hr period, with sampling not to be repeated within 21 days after the sample date. Monthly sampling is undertaken should a “no greater than 25mm in 24hr rainfall” event occur.

3.6.2.1 Review of Water Monitoring Results Surface water monitoring charts and comprehensive surface water data tables are provided within Appendix 5.



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No flows were observed on the following occasions at surface water monitoring sites: Site W1: nil Site W2: nil Site W3: nil Site W3A: nil Site W4: nil Site W5: nil Site W6: March 2012 Site W8: nil Site W9: February 2012, March 2012 Site W10: May 2012 pH Figure 5-1 (Appendix 5) shows the pH results for each sampling month in the reporting period. pH ranges by sampling site (with average values bracketed) were: Site W1: 6.4 to 7.5 (7.1) Site W2: 6.0 to 7.6 (7.0) Site W3: 6.6 to 7.6 (7.1) Site W3A: 6.8 to 7.8 (7.2) Site W4: 6.0 to 7.6 (7.1) Site W5: 6.5 to 8.1 (7.4) Site W6: 6.4 to 7.3 (6.8) Site W8: 6.9 to 7.5 (7.2) Site W9: 5.8 to 7.1 (6.5) Site W10: 7.0 to 7.8 (7.5) Across all sites the pH ranged from 5.8 to 8.1 with specific location averages essentially neutral. pH results were consistent with the previous year’s reporting period results. Electrical Conductivity (EC) Figure 5-2 (Appendix 5) shows the electrical conductivity results for each sampling month in the reporting period. EC ranges by sampling site (with average values bracketed) were: Site W1: 138 to 397 uS/cm (287 uS/cm) Site W2: 196 to 682 uS/cm (417 uS/cm) Site W3: 157 to 506 uS/cm (355 uS/cm) Site W3A: 155 to 413 uS/cm (307 uS/cm) Site W4: 277 to 800 uS/cm (574 uS/cm) Site W5: 154 to 931 uS/cm (557 uS/cm) Site W6: 249 to 1997 uS/cm (625 uS/cm) Site W8: 386 to 1018 uS/cm (681 uS/cm) Site W9: 87 to 1371 uS/cm (378 uS/cm) Site W10: 172 to 1258 uS/cm (578 uS/cm) All sites had greater average EC values compared to the previous reporting period. Total Suspended Solids (T.S.S.) Figure 5-3 (Appendix 5) shows the total suspended solids results for each sampling month in the reporting period. T.S.S. ranges by sampling site (with average values bracketed) were:



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Site W1: <5 to 84 mg/l (32 mg/l) Site W2: <5 to 53 mg/l (18 mg/l) Site W3: <5 to 186 mg/l (45 mg/l) Site W3A: <5 to 20 mg/l (11mg/l) Site W4: <5 to 42 mg/l (18 mg/l) Site W5: <5 to 72 mg/l (31 mg/l) Site W6: <5 to 25 mg/l (11 mg/l) Site W8: <5 to 12 mg/l (9 mg/l) Site W9: 8 to 76 mg/l (32 mg/l) Site W10: <5 to 30 mg/l (21 mg/l) The maximum average T.S.S. level recorded across all sites was 186 mg/l which was recorded at Site W3. TSS concentrations were generally lower when compared with the previous reporting period. Turbidity Figure 5-4 (Appendix 5) shows the turbidity results for each sampling month in the reporting period. Turbidity readings by sampling site (with average values bracketed) were: Site W1: 4 to 156 NTU (47 NTU) Site W2: 7 to 83 NTU (30 NTU) Site W3: 15 to 246 NTU (65 NTU) Site W3A: 4 to 81 NTU (27 NTU) Site W4: 5 to 80 NTU (27 NTU) Site W5: 5 to 107 NTU (43 NTU) Site W6: 5 to 40 NTU (19 NTU) Site W8: 1 to 42 NTU (1 NTU) Site W9: 20 to 155 NTU (66 NTU) Site W10: 3 to 108 NTU (44 NTU) All average turbidity readings were lower than than those from the previous reporting period. Iron (Filtered) [Fe] Figure 5-5 (Appendix 5) shows the filtered iron results for each sampling month in the reporting period. Filtered iron concentration ranges by sampling site were (average values bracketed): Site W1: 1.48 to 4.34 mg/l (2.37 mg/l) Site W2: 0.73 to 3.48 mg/l (2.00 mg/l) Site W3: 1.07 to 5.89 mg/l (2.14 mg/l) Site W3A: 0.96 to 3.00 mg/l (1.44 mg/l) Site W4: 0.23 to 2.04 mg/l (1.04 mg/l) Site W5: 0.29 to 2.09 mg/l (1.07 mg/l) Site W6: 0.42 to 5.60 mg/l (1.33 mg/l) Site W8: 0.09 to 4.71 mg/l (0.95 mg/l) Site W9: 0.38 to 4.54 mg/l (2.53 mg/l) Site W10: 0.23 to 2.51 mg/l (1.19 mg/l) Filtered iron concentration ranges were generally higher than those for the previous reporting period. Results of surface water monitoring during the reporting period are in concurrence with the EIS (1994) which states that “mining operations at the SMC will not jeopardise local or regional water quality”. In addition, an environmental audit undertaken during the reporting period found that “the quality of water at the Stratford Mining Complex monitoring points indicate that there has been no significant or measurable change to the water quality attributable to mining activities over the 2007 to 2011 period” (aemc 2011).



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3.6.2.2 Dam Overflows/Discharges Overflows and controlled discharges from sediment dams were also sampled for analysis, the results of which are reported below. Overflow events are shown in Table 10 below for the following dams: • Western Sediment Dam (SD13) • Haul Road Sediment Dam (SD14) • Waste Dump Sediment Dam (SD15) • Rail Sediment Dam (SD16)

Table 10 - Dams Which Overflowed or Had Syphons Operating During the Reporting Period

DAM or SAMPLE POINT

DATE TSS

(mg/l) SD1 12/12/11 198 SD4 12/12/11 78 SD16 22/07/11 140 SD16 12/12/11 496 SD16 1/02/12 56

Link Rd SD 25/11/11 30 Link Rd SD 12/12/11 29

The locations of sedimentation dams are shown on Figure 2 (Appendix 1).

3.6.2.3 Biological Monitoring of Avondale Creek Catchment In March 2001, SCPL sought permission from the EPA to release surplus water from site. This permission was granted on 16 June 2001 subject to certain conditions relating to duration, monitoring and reporting. The release was deemed to be a trial and was to cease on 1 February 2002. Under the EPA Pollution Control Licence variation issued on 21 February 2002, an extension to the controlled water release trial until 31 January 2003 was allowed. A condition of this extension was for “biological monitoring using established protocols to determine environmental impacts of the water discharge system.” It was also required that the “monitoring be reported to the EPA’s Hunter Regional Office on a quarterly basis.” In keeping with the above requirement, four (4) surveys were undertaken prior to June 2002. These surveys occurred in May 2001, September 2001, December 2001 and April 2002. See previous AR’s for results. A variation to Environment Protection Licence (EPL) 5161 was granted on the 12th December 2002 to allow mine water to be released under “drought release” conditions and extension of normal release conditions to 1st April 2003. Stratford Coal Pty Ltd committed to undertaking biological monitoring prior and post the “drought release”. These surveys were undertaken in February and March 2003. Again see previous AR’s for results. Additional macroinvertebrate survey were undertaken between March 2004 and October 2010 and reported upon in previous ARs. The most recent macroinvertebrate survey occurred in October 2011 (Invertebrate Identification Australasia 2011). The twelve months to October 2011 were characterised by an increase in average rainfall leading to consistent moderate to occasional high flow conditions with one period of no flow in tributary streams during January and February 2011. There were 15 rainfall events over 20 mm, which represents an increase on last year’s 13 events and six events over 40 mm which is a significant increase on last year’s two events that contributed to sustaining the stream flow and therefore,



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ecosystem health. Prior to the current survey there had been moderate rainfall that contributed to the Avon River sites still experiencing a moderate flow while the Avondale and Dog Trap creeks had drained of this event and were again experiencing low flow conditions. Six sites were sampled on the 17th of October 2011 for aquatic macroinvertebrates and water quality using rapid assessment techniques. Two sites are on the Avon River, one above (Site W1) and one below (Site W2) the confluence of the Avon River and Avondale Creek. Two sites are on Avondale Creek, Site W8 at Bowens Road is directly downstream of the mining operation and Site W5 at Wenhams Cox Road further downstream of the freehold property boundary, while Site W3 on Dog Trap Creek is the control site. In addition one site monitors a dam discharge gully approximately 800 m below the discharge point of the northern arm of the eastern clean water diversion drain. A total of 55 genera representing 44 families were observed. Six biological indices are used to determine the condition of the streams in and adjacent to the project area. The results of the current survey indicate that the overall aquatic biodiversity across all the sites is higher or equivalent to that of the previous survey (Invertebrate Identification Australasia 2011). The environmental condition assessment has shown an increase in condition for the Avon River and the Avondale Creek sites. These changes in ecosystem condition/health appear to be the direct result of continued moderate flow conditions in the Avon River and in the other creeks. Collectively, all biological monitoring reports to date have not indicated any significant adverse impact from either the general operations of the mine or the historical controlled release of mine water into the Avondale Creek and Avon River systems. No water discharges from the Stratford East Dam were undertaken during the reporting period. The October 2011 Macroinvertebrate Survey report is provided in Appendix 5.

3.7 GROUNDWATER

3.7.1 Groundwater Management Groundwater characteristics of the mine site were studied by Golder Associates in 1981-82. These studies indicated that the coal seams represented the main aquifer systems in the region. Groundwater is also found in the overlying colluvium and fractured sections of overburden. Available data indicates a sub-regional groundwater flow from southwest to northwest. The water table approaches ground surface in the swampy northwest corner of the basin. The colluvium functions as the principal recharge to the basin. Groundwater is generally saline, highly mineralised water with slightly to highly acidic pH and is generally unsuitable for domestic consumption or irrigation. Groundwater resources within the project area were utilised in the early stages of the Stratford Project, as required, to provide make-up water for the CHPP. Since the mine start up period, water has not been in deficit and no groundwater harvesting has occurred. Water from the Bowens Road West (Parkers) Pit comprising seepage and rainfall/runoff is pumped directly to the CHPP or alternately the RWD. The Stratford Main Pit is currently used for reject deposition and has a return water line reporting to the RWD. Groundwater gained in the BRN and Roseville West pits is pumped directly to the RWD or the Stratford Main Pit. As part of its Development Consent Conditions, SCPL is required to monitor existing groundwater bores in Stratford village rated by Council and other bores licensed by the NSW Office of Water in the vicinity of the mine. The purpose of this monitoring is to determine whether the mine site is having any affect on the bores in Stratford village. A 1994 hydro-geological study indicated that the mine should not impact any rated bores in Stratford village. There are no rated bores in the Stratford village. However, Stratford Coal Pty Ltd measures standing



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water levels in existing (non rated) bores within the Stratford village at six (6) monthly intervals. These bores are also field analysed for pH and electrical conductivity. A disused SCPL bore to the east of Stratford on the northern side of Bowens Road and bores on the former Griffin and former Bramley properties are also included in the bore monitoring program. An amendment to SCPL’s Development Consent Conditions issued by the Department of Urban Affairs and Planning (DUAP) in 1996 following application by SCPL to develop the Roseville Pit included the need for groundwater monitoring in accordance with DLWC requirements. The intention of this monitoring was to determine whether operation of Roseville Pit was adversely impacting the quality or quantity of the local groundwater resource. Four (4) bores were monitored on a quarterly basis for water quality and depth to water. One of these 4 bores (RB4) was destroyed by mining within the Roseville West pit in 2009. The general location of these bores is shown on Figure 2 (Appendix 1). In January 1999 the DMR approved SCPL’s Life of Mine MOP. Within this MOP there was provision for supplementary groundwater monitoring. Installation of seven (7) additional groundwater monitoring wells were advocated within the MOP of which six (6) were installed (coded GW1-GW5 and GW7). The seventh well could not be installed due to rock refusal within the designated monitoring location. Gauging of depth to water within these wells commenced at the time of installation whilst the first round of sampling for analysis was undertaken in June 1999. Monitoring during this reporting period was conducted during September 2011, December 2011, March 2012 and June 2012. The general location of these bores is shown on Figure 2 (Appendix 1). Associated with approval of the Roseville void for storage of washery reject material, an additional groundwater monitoring well was required by the DMR in consultation with the DLWC. This well (coded as GW8) was installed during the 2000/1 reporting period. Nine (9) groundwater monitoring bores, MW1-9, were installed around the perimeter of the BRN open cut in 2002 to determine any effect the operations may have on groundwater levels and/or quality. An additional bore (coded MW10) was established on the northern limit of the Ellis Corner pit expansion during the 2005/6 reporting period. A further two additional bores (coded MW11 and MW12) were established on the northern limit of the Ellis Corner pit expansion. MW1, MW2, MW5 and MW9 were removed during the reporting period due to mining activities. The locations of the monitoring bores are shown on Figure 2 (Appendix 1). Approval for placement of reject within the Bowens Road West Pit was granted during the 2003/4 reporting period with an additional bore BRWN1 being established to determine any potential impacts to groundwaters. The SCPL Bore was replaced during the reporting period. However, no further additional groundwater monitoring bores were installed during this time.

3.7.2 Mine Water Offsite Discharge No mine water was disposed of to watercourses during the reporting period.

3.7.3 Groundwater Monitoring Bores Monitored in Relation to Roseville Pit Compliance with a condition attached to the Amended Development Consent for Roseville Pit required the monitoring of four (4) bores adjacent to Roseville Pit (RB1 – RB4). Monitoring is programmed on a quarterly basis for depth to groundwater and samples collected and analysed for electrical conductivity (EC), pH, sodium, chloride and sulphate. Monitoring bore RB4 was destroyed by mining within the Roseville West pit during an earlier reporting period. The locations of these bores are shown on Figure 2 (Appendix 1).



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Monitoring results for the Roseville groundwater bores are provided in Table 11 below with full analytical results within Appendix 5.

Table 11 - Bores Monitored in Relation to Roseville Pit

Bore Average DTW

Average pH

Average EC

Average SO4

Average Na

Average Cl

Units metres uS/cm mg/l mg/l mg/l RB1 3.55 6.7 8223 40 1633 3623 RB2 1.44 6.7 5955 125 1760 3593 RB3* 11.90 5.3 3520 517 707 911

* Bore dry during on sampling event therefore averages based on three data sets only. Monitoring data recorded during the reporting period indicated: ♦ prevailing high water table – particularly for RB1 & 2; ♦ neutral pH except for RB3 which had pH results in the acidic range; ♦ electrical conductivity was substantially elevated when compared with local surface water flows,

as is consistently seen. Average electrical conductivity readings for all three bores were lower than those for the previous period;

♦ average sulphate concentrations were higher at two of the three bores than those recorded in the

previous reporting period; ♦ average sodium concentrations for the reporting period were comparable to those for the previous

reporting period; and ♦ average chloride concentrations for the reporting period were comparable to those for the previous

reporting period.

Bores Monitored in relation to Bowens Road North Pit Monitoring results for the BRN groundwater bores are provided in Table 12 below with full analytical results within Appendix 5.

Table 12 – Bores Monitored in Relation to Bowens Road North Pit

Bore ID Average Depth to Water (metres)

Average pH Average Electrical

Conductivity (uS/cm)

Average Sulphate

(mg/l)

MW1* - - - - MW2* - - - - MW3 Dry - - - MW4 13.49 7.0 6305 60 MW6 8.63 6.6 1625 13 MW7 10.00 6.5 3265 568 MW8 7.04 6.5 2420 124

MW10 13.31 6.4 3880 54 MW11 10.07 7.4 1210 13 MW12 3.39 6.6 691 5 Griffin 1.68 6.8 1504 51

Notes: * destroyed January 2011; + destroyed March 2011.



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Monitoring data recorded during the reporting period indicated:

• depth to water measurement generally indicated a slightly lower water table relative to results from the previous reporting period;

• pH results were largely neutral. Results were consistent with last reporting period;

• electrical conductivity was substantially elevated when compared with local surface water

flows and comparable with those in the previous reporting period, and

• sulphate concentrations were generally consistent with the previous reporting period. Overall, BRN groundwater monitoring generally showed a similar profile to previous years monitoring results. Bores Monitored in relation to Parkers Road Pit (Bowens Road West Pit) Approval granted for the deposition of rejects within the Bowens Road West North pit in May 2003 required the installation and monitoring of bore BRWN1 and monitoring of existing bores GW2 and GW4 on a monthly basis. Backfilling of the pit was completed in January 2004. Since December 2004 ground water monitoring has been undertaken on a six-monthly basis for depth to groundwater and samples collected and analysed for electrical conductivity (EC), pH, ORP and sulphate. The locations of these bores are shown on Figure 2 (Appendix 1). Monitoring results during this reporting period for the BRWN1 bore are provided in Table 13 below with full analytical results within Appendix 5. Monitoring results for GW2 and GW4 are presented in Table 14.

Table 13 – BRWN1 Monitored in Relation to Bowens Road West North (Parkers Road) Pit

Site Average

depth to water (m)

Average pH

Average EC

US/cm

Average Sulphate

Concentration (mg/l)

BRWN1 0.41 5.72 4655 413 Monitoring data recorded during the reporting period indicated: ♦ a prevailing consistently high water table, ♦ pH was slightly acidic, ♦ electrical conductivity levels were comparable to Stratford Mine area bores, ♦ sulphate concentrations were similar to those reported for the previous reporting period Bores Monitored as Part of Development Consent Monitoring of bores at Stratford Village is required by SCPL’s Development Consent to determine whether any impact is occurring from mining activities on groundwater quality and water levels within the Village. Studies in the Stratford Coal EIS concluded that groundwater at Stratford village was highly unlikely to be linked to groundwater in the Main Deposit. The bores are typically monitored in March and October each year. Monitoring during the reporting period was undertaken in October 2011 and March 2012. Results and a bore location plan can be found in the Plans and Appendix volume. Sampling to date shows that most of the groundwater bores monitored are similar in quality to the



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bores monitored on the mine site. Other bores, such as Smith, are of much better quality. It is understood that these bores are relatively shallow, and given the lower elevations of the sites are tapping into the shallower alluvial aquifers, as opposed to the deeper groundwater aquifers tapped by the majority of bores. Results show that there has been no significant difference in depth to standing water level for the bores gauged to date. The next routine monitoring of these bores is scheduled for October 2012. Bores Monitored in Accordance with MOP 1999 Six (6) groundwater monitoring wells (designated GW1 – GW5, GW7) are gauged, sampled and tested in accordance with the 1999 MOP. Note that one (1) additional monitoring well – GW8 - was installed following use of the Roseville Pit void as an emplacement area. Monitoring is done on a quarterly or six monthly basis. Samples collected are analysed for electrical conductivity, pH, sodium, chloride, filtered iron and sulphate. The locations of these bores are shown on Figure 2 (Appendix 1). Full analytical results are also shown in Appendix 5. A summary of monitoring results for the 1999 MOP bores is provided in Table 14.

Table 14 - Bores Monitored in Accordance with MOP 1999

Site Average Depth to

Water (m)

Average pH

Average EC

(uS/cm)

Average Sodium

Concentration (mg/l)

Average Chloride

Conc. (mg/l)

Average Iron

(filtered) Conc. (mg/l)

Average Sulphate

Conc. (mg/l)

GW1 15.19 5.4 1032 172 233 201 27 GW2 9.42 6.6 4153 724 1166 24 21 GW3 1.34 3.9 3893 755 1245 19 64 GW4 0.50 6.5 10150 1535 3245 3.3 83 GW5 3.92 6.7 3045 675 1075 55 14 GW7 2.50 6.3 1428 253 422 6 32 GW8 8.13 5.0 5255 1110 1580 69 458

Monitoring for the GW series bores to date has indicated (when compared to the previous reporting period): • water table levels across the majority of wells were slightly lower than the previous reporting

period; • average pH units recorded were similar to previous years results across the data set; • Electrical conductivities were similar to previous results for all but one bore (GW1) which was

lower; • Sodium and chloride concentrations were generally comparable with the exception of GW1 and

GW4 which were both lower; and • Filtered iron concentrations were generally similar as were sulphate concentrations. Based on groundwater monitoring results and an environmental audit undertaken during the reporting period, in relation to groundwater management, it was found that “In general the groundwater monitoring has not demonstrated a significant or measurable change in water table level (other than that expected from rainfall over the 2010-2011 period) or groundwater quality that could be attributed to the mining activities across the Stratford Mining Complex area.” (aemc 2011) These results concur with predictions made in the Environmental Assessment (2010).

3.7.4 Complaints No water related complaints were received during the reporting period. There was also no water related complaints received in the previous reporting period.



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3.8 Flora and Fauna Management The Bowens Road North Flora and Fauna Management Plan (FFMP) (Resource Strategies 2002a) details requirements for the clearing of vegetation in advance of mining operations, protection of existing remnant vegetation and revegetation of disturbed areas. Limited tree removal occurred during the reporting period. This was generally restricted to the western pit extension of the Bowens Road North Pit (the “cutback”). The tree removal protocol was employed during tree removal operations (assessment by the site Environmental Officer). No faunal injuries or deaths were associated with tree removal.

3.9 Weed Control A significant program targeting Giant Parramatta Grass was undertaken during the reporting period. Known infestations within and adjacent to the ML area were targeted. The program is to be continued and followed up during the next reporting period.

3.10 VIBRATION AND AIRBLAST

3.10.1 Blast Criteria and Control Procedures The top 5-10 m of overburden is free-dug, whilst all other overburden requires blasting prior to excavation. The overburden is normally drilled in 10-20 m benches using patterns ranging from 6 x 8m to 9 x 12 m. A mixture of ANFO (dry holes) and emulsion blends (wet holes) are used at powder factors ranging from 0.2 to 0.6 kg/bcm. Dozer ripping to break rock prior to excavation, where economic, is used at site to complement blasting. Conditions attached to the Development Consents and Environment Protection Licences require monitoring of airblast overpressure and ground vibration at the Isaac, Ex-Judge, Clarke, Falla and Ex-Ellis residences. The locations of these residences are shown on Figure 3 (P&A volume). Development Consent and OEH Environment Protection Licence conditions state that overpressure caused by blasting at monitored locations may exceed 115 dB(L) for up to 5% of blasts during the reporting period but must not exceed 120 dB(L) at any time. Similarly, ground vibration at monitored locations caused by blasting may exceed a peak particle velocity of 5 mm/s for up to 5% of blasts during the reporting period but not exceed 10 mm/s. Notification of blasting is provided to emergency authorities and neighbouring landowners approximately twenty four (24) hours prior to each blast. A blasting hotline (6538 4253) is maintained for the site. Blasting is currently undertaken within the Bowens Road North and Roseville West pits.

3.10.2 Review of Blast Monitoring Results The airblast overpressure and ground vibration results for all blasts undertaken during the reporting period are provided in Appendix 6.

3.10.2.1 Review of Overpressure Results No blasts occurred during the reporting period whereby an overpressure result in excess of 120 dB(L) was recorded. No blasts occurred during the reporting period whereby an overpressure result in excess of 115 dB(L) was recorded. In terms of blasting at the Stratford Mining Complex, 0% of blasts resulted in recorded overpressure exceeding 115 dB(L) (0 of 76 blasts).



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3.10.2.2 Review of Vibration Results The highest recorded levels for ground vibration recorded during the reporting period were: Ex-Ellis Property - 0.79 mm/s Clarke Property - 0.25 mm/s Falla or Atkins Property - 0.95 mm/s Ex–Judge Property (Stratford Village) - 0.67 mm/s Isaac Property - 0.64 mm/s All vibration results were below than the allowable 5mm/s and maximum 10mm/s specified in licence conditions.

3.10.3 Complaints Fifty (50) blast related complaints were received during the reporting period. This represented thirty eight (38) more complaints than the previous reporting period.

3.10.4 Dilapidation Reports A dilapidation inspection by a professional structural engineer was conducted on one (1) occasion at a local dwelling during the reporting period. The purpose of the inspections are to evaluate impacts (if any) on dwellings in the vicinity of mining operations as a consequence of such operations. No damage to the dwelling (surveyed) as a consequence of mining operations was found.

3.11 NOISE

3.11.1 Noise Criteria and Control Procedures SCPL undertakes quarterly noise monitoring surveys in order to determine status of compliance with noise limits provided in Environmental Protection Licences (EPLs). Attended monitoring (a component of the quarterly surveys) was conducted at the Bagnall, Isaac (south), Deveraux, former Van der Drift, Battaglini, former Ellis, former Atkins, Wadlands and Clarke properties during the reporting period. During quarterly noise surveys LAeq (15 minute), noise levels are measured and recorded then compared to the permitted day, evening and night noise limits. SCPL undertook mobile plant noise monitoring during the reporting period.

3.11.2 Review of Noise Monitoring Results Noise monitoring during the reporting period was undertaken in September 2011, December 2011, March 2012 and June 2012. Full quarterly noise can be accessed on the Stratford Coal Limited website (www.stratfordcoal.com.au).



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September 2011 Survey

Monitoring Mine Contribution

Mine Contribution

Mine Contribution

Noise Limits (day/evening/night)

Noise Impact dB(A)

Location LAeq(15 minute) for Day 7/09/11

LAeq(15 minute) for Evening

6-7/09/11

LAeq(15 minute) for Night 6-8/09/11

LAeq(15 minute)

LAeq(15 minute)

Bagnall 35 nil 35,<20 37/37/45 0/0/0 Battaglini 36 33 34,<28 37/36/42 0/0/0 Clarke Deveraux

GCL2 (former Ellis) Isaac (South)3

GCL2 (former Van der Drift) Wadland3

37 nil

46 <38 <36

36

nil 30 nil 40 nil

nil

NA 35,nil NA

36,35 31,34

NA

35/35 37/36/42 NA/NA

37/36/42 35/35/35

NA/NA

01/0 0/0/0

NA/NA 01/24/0 01/0/0

NA/NA

1 Part 2 Noise Criteria from Schedule 3 of the SCM Environmental Performance Conditions outlines “Noise generated by the Stratford mining complex is to be measured in accordance with the relevant procedures and exemptions (including certain meteorological conditions) of the NSW Industrial Noise Policy” Section 11.1.3 Non-compliances with noise conditions of the Industrial Noise Policy stipulates the following’ “A development will be deemed to be in non-compliance with a noise consent or license condition if the monitored noise level is more than 2 dB above the statutory noise limit specified in the consent or licence condition” Consequently the noise contribution at this residence is considered to be a 0 dB(A) impact. 2 Gloucester Coal Limited 3 A private agreement exists between the SCM and this residence, hence noise limits do not apply 4 As a consequence of footnote 1 the SCM noise contribution at the Isaac (South) residence during the evening measurement is considered a 2 dB(A) criterion excursion resulting from the DCM (import) train transiting south adjacent to the measurement position whilst on the mine lease.

Comparing the assessed Stratford mine noise contributions with day, evening and night period noise criteria shows one instance of excursion for the attended measurement at the Isaac (South) location during the evening survey that has been identified to be dominated by the presence of a locomotive noise from an import train leaving the rail loop. Stratford Coal Pty Ltd has a private agreement in place with Isaac (South) hence noise limits do not apply at this residence. Therefore, comparison of the predicted noise impact with the time of day (noise) criterion for each residence indicates no excursions of the noise consent conditions surrounding the SCM. Based on this analysis SMC was in compliance with its environmental noise stipulations for the purpose of assessment as part of the September 2011 noise monitoring program.

December 2011 Survey


Mine Contribution

Mine Contribution


Noise Impact dB(A)

Location LAeq(15 minute) for Day 14/12/11

Laeq(15 minute) for Evening 13-14/12/11

Laeq(15 minute) for Night

13-15/12/11

Laeq(15 minute)

Laeq(15 minute)

AGL (former Atkins)1 Bagnall

36 <35

30 <37

<27,nil 30,22

37/35/35 37/37/45

0/0/0 0/0/0

Battaglini <37 <30 nil,nil 37/36/42 0/0/0 Deveraux


GCL2 (former Van der Drift) Wadland3

Nil 40

<36 40

33

nil nil 36 36

<25

<30,19 NA

<31,nil <30,nil

NA

37/36/42 NA/NA

37/36/42 35/35/35 35/35/35 NA/NA

0/0/0 NA/NA 0/0/0 5/04/0 01/0/0

NA?NA 1 Australian Gas Light Company 2 Gloucester Coal Limited 3 A private agreement exists between the SCM and this residence, hence noise limits do not apply 4 Due to the provision within the OEH INP that a noise excursion is only considered if the relevant criteria a exceeded by greater than 2 dB the noise impact at this location is assessed to be 0 dB.

A 5dB(A) excursion of mine noise levels above noise limits was measured at the Van der Drift residence during the day survey. Reviewing the previous noise monitoring data for the last 2 years at this location, which shows no similar excursion, it is clear that this is not a systemic breach of the noise criteria provided in the applicable planning approvals and EPLs. Accordingly, and in compliance with the approved Stratford Noise Management Plan (Vipac 2006) and the INP, the above results do not



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constitute a breach of the noise criteria provided in the applicable planning approvals and EPLs. Based on this analysis SCM was in compliance with its environmental noise stipulations for the purpose of assessment as part of the December 2011 noise monitoring program at locations other than Van der Drift during the daytime period.

March 2012 Survey


Mine Contribution

Mine Contribution


Noise Impact dB(A)

Location LAeq(15 minute) for Day

14-15/03/12



13-15/03/12

Laeq(15 minute)

Laeq(15 minute)

GCL1 (former Bagnall) Battaglini Clarke

34 <35 nil

33 <37 nil

34,33 30,22 NA

-/ -4 /-4

37/37/45 35,403/35,403

0/0/0 0/0/0 0/0,0

Deveraux


Wadland3

35 30 37 32

33 nil 35 25

31,35 NA

25,26 NA

- / -4/-4 NA/NA -/-4/-4

NA/NA

0/0/0 NA/NA 0/0/0

NA/NA GCL1 (former Van der Drift)

35 23 nil,nil 35,403/35,403/35,403 0,0/0,0/0,0

1 Gloucester Coal Limited 2 A private agreement exists between the SCM and this residence, hence noise limits do not apply 3 Noise acquisition criteria according to Project Approval Schedule 3 Condition 3 4 Land subject to acquisition upon request

Noise emissions produced by SCM were determined to be within the noise criteria and acquisition criteria at all monitoring locations in the day, evening and night periods for the March 2012 noise monitoring survey.

June 2012 Survey


Mine Contribution

Mine Contribution


Noise Impact dB(A)

Location LAeq(15 minute) for Day

13-15/06/12



13-14/06/12

Laeq(15 minute)

Laeq(15 minute)

Atkins GCL1 (former Bagnall) Battaglini

29 35 30

25 31 31

28,26 31,32 27,27

35/35/35 NA/NA/NA

-4/-4/-4

0/0/0,0 0/0/NA 0/0/0,0

Deveraux


Wadland3

nil 34 33 33

26 23 34 22

nil,29 NA

24,31 NA

- 4/ -4/-4 NA/NA

NA/NA/NA

NA/NA

0/0/0,0 NA/NA

NA/NA/NA NA/NA

GCL1 (former Van der Drift)

33 29 27,28 35,403/35,403/35,403 0,0/0,0/0,0

1 Gloucester Coal Limited 2 A private agreement exists between the SCM and this residence, hence noise limits do not apply 3 Noise acquisition criteria according to Project Approval Schedule 3 Condition 3 4 Land subject to acquisition upon request

The Stratford Operations noise emissions were found to be within the day, evening and night for noise criteria and noise acquisition criteria at all private property monitoring locations for the June 2012 noise monitoring survey. On the basis of a comparison between the site’s noise model and calculated noise results from a combination of operator attended and unattended (logger) results, full daytime, evening and night time noise compliance was achieved for all noise surveys. The character of the noise emissions can be described as follows:

− Exhaust and transmission noise from haul trucks. Exhaust noise is likely to be dominant during unloaded vehicle movements whereas transmission noise may be more significant under load, particularly on uphill grades.

− Bulldozer track “rattle” has in the past produced the maximum level of noise from mining



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operations. − Reversing alarm noise emissions are sometimes audible at residential locations,

however, they are not considered to significantly influence the overall contributed noise levels. All machinery on site have broad band “Duck Quack” reversing alarms fitted.

− The coal preparation plant is sometimes audible at the nearest potentially affected

receivers.

− Train noise (movement/loading of coal trains) is particularly obvious, on occasion, at a property adjacent to the rail loop (Bagnall residence).

There is a high level of variation of mine noise emissions due to changing operational and atmospheric conditions. Noise enhancing atmospheric conditions are likely to be more prominent during winter. SCPL’s initial noise consultants, Richard Heggie and Associates Pty Ltd (RHA), used the following criteria for assessing the relative levels of night-time noise impact: • Mine noise emissions which achieve compliance with the OEH’s night-time (neutral

atmospheric) noise limit of 35 dB(A), under most atmospheric conditions and which would be acceptable to most people. This corresponds to a subjectively “negligible” noise impact;

• Mine noise emissions that achieve compliance with the OEH’s night-time (neutral atmospheric)

noise limit of 35 dB(A) with minor noise enhancement due to prevailing winds or mild temperature inversions. This corresponds to a subjectively “low” noise impact;

• Mine noise emissions which achieve compliance with the OEH’s night-time (neutral atmospheric) noise limit of 35 dB(A) with occasional moderate noise enhancement due to mild to strong temperature inversions with increased frequency in winter and/or prevailing winds. This corresponds to a subjectively “moderate” noise impact; and

• Mine noise emissions that achieve compliance with the EPA’s night-time (neutral atmospheric)

noise limit of 35 dB(A) with significant noise enhancement due to mild to strong temperature inversions with increased frequency in winter and/or prevailing winds. This corresponds to a subjectively “high” noise impact.

RHA estimated that moderate (i.e. 1.50C/100m) to strong (i.e. greater than 40C/100m) inversions occur for approximately 68% of annual night-time and early morning periods.

3.11.3 Noise Control Measures The following operational measures have been undertaken (both prior to, and during, this Annual Review period) in an effort to reduce/control noise emissions: • BRN mining fleet of 789 Cat trucks and 994 Liebherr excavators replaced with smaller (and

relatively quieter) Cat 775E and Cat 30T trucks and small excavators; • Roseville mine fleet Cat 30T trucks and small excavators;

• Roseville pit haul road surface designed below natural surface to reduce noise emissions;

• Establishment of noise bunds on the western side of Roseville Extension Pit;

• BRN and Roseville mining activities restricted to the hours of 7:00am to 5:30pm with only

occasional weekend work; • Reversing sirens on mobile plant replaced with broad band “duck quacks”;

• Start up alarms on CPP conveyors have been turned down to minimum levels still consistent



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with coal mine safety regulations; • Installation of exhaust mufflers on product stockpile dozer;

• Installation of noise cladding on secondary crushing circuit;

• Installation of noise attenuation boarding adjacent to ROM hopper;

• Maintenance of acoustic barriers (e.g. noise bunds) along the northern side of the main haul

road, the western site of the western haul road and the western side of the Roseville haul road to control noise emissions from mobile plant. Noise bunds are also maintained on the western side of the BRN haul road and northern perimeter of the BRN box cut;

• Export train scheduling is under the control of Pacific National, the rail transport contractor, in

conjunction with the Rail Infrastructure Corporation, rail ownership and management. Pacific National was approached by SCPL with a view to scheduling trains on day and afternoon shifts as much as possible to avoid/minimise train loading on night shift. However, Pacific National reiterated its previous position of being constrained by other non-coal users of the Northern Rail Line as well as demands at the Newcastle coal loading facility, and hence is not able to avoid night time train loading;

• Use of a D10T XQ dozer for use on the product stockpile, a machine that is quieter relative to

earlier equivalent plant;

• Noise cladding (Hushclad) of the CHPP southern wall completed during 2012; and

• Commissioning and ongoing use of a continuous noise monitoring unit (“real time noise monitoring”).

3.11.4 Noise Management Plan A Noise Management Plan (Vipac 2006) for both Stratford and BRN was completed during the 2006/7 reporting period to bring quarterly noise monitoring in line with the Industrial Noise Policy. A Draft Noise Management Plan for the Stratford Mining Complex was submitted to the Department of Planning & Infrastructure during the reporting period. This Plan was required under the 2010 Development Consent Modification.

3.11.5 Future Works Ongoing works proposed in order to continue noise mitigation at site include:

• Continuation of quarterly noise monitoring surveys as required under the OEH environment protection licences - this will provide information on any problem areas; and

• Works associated with mitigation measures identified within the Stratford Coal Mine July 2010 Modification Environmental Assessment. As at the end of the Annual Review Period, preparatory planning for these works had commenced.

3.11.6 Complaints Thirty nine (39) noise related complaints were received during the reporting period (complaints include general mine noise, coal train unloading/loading and general train noise). A similar level of noise complaint occurred in this reporting period when compared with the previous period when forty (40) noise related complaints were received.



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3.12 Landscaping and Visual Screening The Stratford EIS included an assessment of the visual impact of the mine facilities, open cut and infrastructure areas and recommended measures to ameliorate any impacts. The report, prepared by Dewsnap Landscape Design, concluded that the visual impact of the Project would be minimal providing remedial measures (tree planting) were implemented. Remedial measures were recommended to limit views from the Bucketts Way and Wenham Cox Road and from adjacent landholders. Meeting landscaping and visual screening requirements has involved the following: • The preparation of a detailed Landscaping Plan covering all areas identified as necessary for

the maintenance of satisfactory visual amenity, to provide for the establishment of trees and shrubs and the construction of mounding or bunding.

• Additional tree planting amongst the tree groves established in 1982 parallel to Bucketts Way.

The additional tree plantings along Bucketts Way were detailed in the Landscape Plan. Tree planting was undertaken in 1995, 1996 and 1998. Further planting near the mine access road and at Craven Flat were completed in 1996 and 1997. An additional 2,100 trees were planted along Craven Flat and the Ex-Bramley property in June 2007. A further 1800 trees were planted in March 2009 between Craven Village and Glen Rd.

• Tree planting parallel to Bowens Road.

Tree planting parallel to Bowens Road was detailed in the Landscape Plan. The eastern part of proposed tree plantation extends into the northwest corner of the main deposit. The western part of the proposed planting falls within the Roseville Pit limits. Planting within this area has been deferred until completion of mining extension (including proposed satellite pits).

• Tree planting parallel to Wenham Cox Road to minimise visual impact to the “Avondale”

property.

The Landscape Plan Report recommended against this tree planting due to the large difference in elevation between “Avondale” and the planting site that would make any tree planting ineffective even at full height. The Plan recommended tree planting along a ridge about 300m to the north of Bowens Road as a replacement for the Wenhams Cox Road planting. This planting was delayed by the Bowens Road North development.

• Bunding at the CHPP and coal washery rejects area.

Bunding at the CHPP and its revegetation is detailed in the Landscape Plan. Bunding and tree planting was completed by 1996.

In accordance with Development Consent 23-98/99 Schedule 3 Condition 32, visual impacts, and particularly off-site lighting impacts, of the mining complex are minimised. Lighting is to comply with Australian Standard AS4282 (INT) 1995 – Control of Obtrusive Effects of Outdoor Lighting. Lighting mitigation measures undertaken include (where practicable): • Directional lighting throughout the CHPP and Industrial Area;

• Tree planting;

• Bund wall construction on southern side of CHPP;

• Use of low brightness lights in selected areas; and

• Lights on load out conveyor and bin are turned off when there is no night time loading of trains.



46

BRN Development Consents and the 2001 BRN Landscape and Revegetation Management Plan (Resource Strategies 2002a) identified the construction of a 6m high bund on the northern and western limits of the BRN operations, tree plantings along Wenham Cox Road and the implementation of a specific Landscape Enhancement Plan for the Ellis residence as mitigative measures to limit the level of visual impact from the operations. The construction and vegetation of a 6m high bund around the BRN operations was completed in 2003. Screen tree plantings along Wenham Cox road were undertaken in 2003. At the request of the owners of the Ellis residence, and in accordance with Development Consent Condition 3.6 (b) for the BRN Project, a Landscape Enhancement plan was developed and implemented in 2003. Maintenance of tree plantings during the reporting period included slashing of grass within tree plantings adjacent to Bucketts Way along Craven flat.

3.13 Lighting Emissions Two (2) complaints regarding lighting emissions were received during the reporting period. Note that coal conveyor lights have been placed on timers and lighting within the CHPP can be switched off from the Control Room if not required.

3.14 CULTURAL AND NATURAL HERITAGE CONSERVATION The Stratford EIS identified no significant sites of European cultural heritage within or near the project area. Most of the items and buildings listed on the Heritage Act Register of Heritage Orders, the National Trust Register, the Register of the Australian Heritage Commission and the Gloucester Shire Council List of Historic Buildings in the Gloucester Shire are located in the Gloucester township. An Aboriginal archaeological survey was conducted in 1984 by Dr Helen Brayshaw and was updated in 1994. The survey found an isolated artefact site and an open site on the eastern perimeter of the project area. The artefacts consisted of two broken blades; one resembling a backed blade and the other resembling a flake. The artefacts are within an old farm gravel pit. Both artefacts were considered likely to be implements. Another blade artefact was found 300m to the south of the artefact site. These sites are outside of the areas to be disturbed during the operation of the mine. The Artefact Site (38-1-8) has been pegged and signposted. Signage directs persons to not enter the site containing the artefacts. The site has to date been successfully managed to prevent entry or other adverse impact. Both the former farm gravel pit site and the Isolated Artefact are listed on the NPWS Cultural Heritage Register in the Gloucester/Stratford area. Dr Brayshaw identified an additional artefact to the west of the mine site in 1994. The Karuah Local Aboriginal Land Council undertook a site investigation at the same time and did not identify any sites of significance. Development Consent Condition 12 requires the protection of Site 38-1-8 to the satisfaction of NPWS and the monitoring of topsoil removal operations for aboriginal artefacts. The BRN EIS identified no significant sites of European cultural heritage within or near the project area. An Aboriginal archaeological survey was conducted in 2000 by Heritage Search in the presence of Forster Local Aboriginal Land Council (FLALC) representatives. The survey found an isolated artefact site on the wall of the easternmost dam along the short ephemeral watercourse running east to west between the two rises in the study area (refer Figure 1). The artefact was a broken flake and was categorised as having no particular scientific or educational significance and is considered of no social significance by the local Aboriginal people. NPWS granted a “Consent to Destroy” for the mining of the artefact site and the artefact was removed in January 2008.



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The FALC advised on the completion of the 2000 surveys that monitoring of the topsoil stripping within the development area was not necessary. No additional items of Aboriginal heritage were discovered during topsoil stripping activities within the reporting period.

3.15 SPONTANEOUS COMBUSTION There were no incidences of spontaneous combustion during the reporting period.

3.15.1 Complaints There were no spontaneous combustion related complaints received during the reporting period. This represented the same number of complaints than the previous reporting period.

3.16 BUSH FIRE MANAGEMENT Development Consent 23-98/99 Schedule 3 Condition 34 requires SCPL to be suitably equipped to respond to any fires on site and to assist the Rural Fire Service and emergency services as much as possible if there is a fire in the surrounding area. The following bushfire management related activities/works are undertaken: • Members of the Gloucester Bush Fire Management Committee and relevant Government

Agencies have inspected the mine site on a number of occasions; • Access arrangements onto and through the mine site for local Bushfire Brigade officers to fight

bushfires have been made; • A number of old fire trails up onto the ridge on the eastern side of the mine site have been

cleared and re-opened; • SCPL and Ditchfield have given an undertaking to GBFMC members that the water cart(s) will

be made available for bushfire fighting purposes where suitable access for this machinery is available;

• SCPL routinely (as required) undertakes hazard reduction burns, in consultation with the local

Bushfire Brigade. • Fuel loads on cleared pastures area on the mine site that are removed from mining operations

are reduced by cattle agistment and/or periodic slashing (subject to erosion and faunal, especially wildlife corridor, considerations).

3.17 FERAL ANIMAL CONTROL Two wild dog trapping programs were undertaken during the reporting period. The programs were run in conjunction with the Livestock Health and Pest Authority. The first was undertaken in August 2011 with 6 dogs caught (3 male, 3 bitches). The second was undertaken in February 2012 with 4 dogs caught (I bitch, 3 male). Both programs were considered to be highly successful.

3.18 COAL WASHERY REJECTS / REJECT MANAGEMENT

3.18.1 Handling and Disposal Procedures The Stratford Mine utilises a co-disposal method that combines the coarse rejects with the



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intermediate sized materials and tailings. The resulting slurry comprising all fractions is relatively easy to transport by pipeline. Rehabilitation is faster and costs are reduced as the material when discharged into a containment area consolidates enough, due to the range of particles sizes in the material, to support machinery within a short time. Sections of the containment areas, other than the SCM Main Pit, once filled and sufficiently drained are firm enough for rehabilitation (i.e. covered with a capping layer (as required), topsoiled and revegetated) to be progressively undertaken concurrent with disposal operations elsewhere within the containment area (past experience). Reject material has been discharged into the Stratford Main Pit since May 2003.

4. COMMUNITY RELATIONS

4.1 COMMUNITY CONSULTIVE COMMITEE A total of four (4) CCC meetings were held during the reporting period. Issues raised and/or discussed during the CCC meetings held during the reporting period include but are not limited to:

Dust gauge monitoring Dust control Complaints handling Water quality Land access protocols Weed management Environmental monitoring reports Noise monitoring Blasting Dust monitoring Biodiversity surveys

Site inspections were conducted by committee members during the October 2011 and February 2012 meetings.

4.2 ENVIRONMENTAL COMPLAINTS Complaints (by category) received by Stratford Coal Pty Ltd over the last 6 reporting years are as follows: 06/07 07/08 08/09 09/10 10/11 11/12 Noise 7 8 23 23 38 39 Train 0 0 0 0 4 0 Blasting 0 5 3 5 12 50 Air Quality 2 0 0 2 4 1 Water 0 0 0 0 0 0 Lighting 0 0 1 4 2 2 Traffic Safety 6 2 0 0 0 1 Traffic Movement 0 0 0 0 0 4 Ground Surface Damage 0 0 0 0 0 1 Visual 0 0 0 0 1 0 Total 15 15 27 34 61 97 A total of 97 complaints were received during the reporting period. This compares with 61 complaints in the previous reporting period.



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4.3 LIAISON AND COMPLAINT RESOLUTION In accordance with the Development Consent Conditions, SCPL was required to establish and maintain a complaints handling and response procedure. Under the current system, complaints received during normal office hours are initially received by a commercial answering service which relays the call to the Mine’s receptionist who in turn either puts the complainant through to the Community Liaison Manager, or if not immediately available, records the complaint for urgent follow up. Outside normal office hours the answering service advises an Environmental staff member (via a supplied contact listing) of the complaint by telephone. Confirmation of a complaint being received is e-mailed from the call centre to the Environmental Officer. A dedicated complaints telephone number (1300658239) is in place 24 hours per day. Calls to this number are charged at a local call rate. An initial response from the Company to the complainant is generally provided within 24 hours of receipt of the complaint. The actions taken in relation to the complaint are dependent upon the nature of the complaint. All complaints received and responses provided in relation to each complaint are recorded in the Complaints Register. The Complaints Register is tabled at each CCC for the period covered since the last Committee meeting.

4.4 EMPLOYMENT STSTUS AND DEMOGRAPHY In June 2012, the employment status at the mine site was as follows: Stratford Coal Pty Ltd 47 Ditchfield Contracting Pty Ltd 63 Trevor Harris Contracting 9 Cleaning Contractor 1.51

Trellis Earthworks 2 TOTAL 122.52

In addition to direct permanent employment at the mine, on the basis of a conservative employment multiplier of one mine site job generating one job within the general community, up to 122.5 (full time equivalent) jobs are expected to have been provided in supporting services. Currently 47% of mine employees reside within the local area ie Gloucester/Stroud.

4.5 EMPLOYEE ENVIRONMENTAL AWARENESS TRAINING Environmental awareness training has previously been undertaken for staff, employees and contractors on site and is directed on topics of site relevance such understanding due diligence, oil spill containment and cleanup, cultural heritage, hazardous substance management, waste management, water management, erosion and sediment control, noise management, air quality management, spontaneous combustion management and flora/fauna management. In addition, environmental issues are also addressed within induction training for employees and contractors.

1 Full time equivalent 2 Interail train crew allocated to Duralie Mine site



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5. REHABILITATION The primary objectives of the rehabilitation program are minimisation of erosion and re-instatement of pre-mining land capability. Other rehabilitation objectives are: • The generation of a final rehabilitated landform which is consistent with general landforms in the

area and which will blend in with the hills to the east; • For the mine site as a whole to be safe, stable and non-polluting;

• To provide a landform which is suitable for the primary final land uses of grazing, forestry and

faunal habitat enhancement; • To decommission and remove surface infrastructure at the completion of mining activities

unless the Director-General of the Department of Planning & Infrastructure agrees otherwise;

• For land affected by the mine development, to restore ecosystem function, including the maintaining or establishing self-sustaining eco-systems comprising:

o a wildlife corridor o local native plant species; and o a landform consistent with the surrounding environment;

• To minimise the amount of disturbed land awaiting rehabilitation;

• To produce final voids which are safe, stable and non-polluting;

• To provide for the safe and environmentally acceptable disposal of CHPP rejects; and

• To minimise the adverse socio-economic effects upon the local community associated with mine

closure.

5.1 REHABILITATION PRINCIPLES Rehabilitation of disturbed areas is undertaken concurrent with ongoing mining operations. Disturbances associated with the construction of the mine infrastructure (e.g. rail loop batters, CHPP bund wall, roadsides of the mine access road, noise bunds) have been rehabilitated using a variety of techniques including reshaping, topsoil placement, direct seeding with pasture and native seed, hydraseeding, hydramulching and straw-bitumen mulching. Rehabilitation of the overburden dumps involves the contouring of the outer dump faces to an overall slope of 1 in 6 (Stratford), 1 in 4 (BRN and Roseville), followed by drainage works (e.g. bench drains, contour banks - if required). (Note that the internal faces of the former proposed Eastern Emplacement Area and the north-eastern corner of the Stratford waste dump, have been rehabilitated to a grade of 1 in 4). Topsoil, previously stripped from the site and stockpiled, is respread to an average thickness of 150-200mm and revegetated. Direct placement of freshly stripped topsoil on areas under rehabilitation is undertaken wherever possible. Overburden dumps are rehabilitated in progressive increments to the final landform so that contaminated water catchment areas are minimised. Topsoil is removed from ahead of the advancing pit or overburden dump. All suitable and accessible topsoil material is removed. The topsoil is pushed into heaps by dozers and loaded into trucks by excavator. The topsoil is either immediately respread onto recontoured areas or is stockpiled for later



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re-use. The total volume of topsoil stripped and stockpiled to the end of the reporting period across the greater Stratford Mine site (inclusive of Bowens Road North and Roseville operations) was approximately 245,000 cubic metres. There is sufficient topsoil in storage to provide at least a 100mm cover across all disturbed areas which will require rehabilitation (assuming two final voids and Stratford East dam retained). To minimise degradation of topsoil quality during stockpiling the following measures are in place: Stockpiling time is minimised whenever possible; topsoil stockpiles do not exceed 3m in height (average 1.5m); and stockpiles are reshaped, seeded with pasture grasses/legumes and fertilised to maintain biological activity. These measures help prevent erosion, soil loss and limit dust generation. In relation to the SCM waste emplacement revegetation involves the establishment of pasture grasses and legumes with selective placement of trees. Pasture is established in most areas whilst native trees and shrubs are planted within wildlife corridors, on some slopes and some plateau areas. Trees are planted to achieve maximum aesthetic and screening effects as well as providing windbreaks, woodlots, stock shelter and habitat enhancement. Local endemic native species (particularly trees identified in the EIS) have been used wherever possible based on trialing of various species in the initial rehabilitation areas. The revegetation strategy was developed in consultation with the district Department of Land and Water Conservation (DLWC) Mining Officer. In relation to the BRN waste emplacement an initial cover crop of millet or oats is established to protect the reshaped dump surface from erosion. Native vegetation is then established in accordance with the BRN Flora and Fauna Management Plan (Resource Strategies 2002a).

5.2 REHABILITATION PROGRESS A total of 43 drill holes within the mining lease areas were cemented/sealed in the reporting period. The sealing of these wells was conducted in accordance with the Department of NSW Mineral Resources “Borehole Sealing Requirements on Land: Coal Exploration”. No permanent rehabilitation works were undertaken during the reporting as a consequence of the stage of the mining cycle.

Table 15 - Summary of Main Rehabilitation Works from July 2011 to June 2012 (inclusive)

Rehabilitation Type Area (ha) Sites Treated

Sown Pasture on Topsoiled Areas

0

Sown Native Seed on Topsoiled Areas

1

Sown Pasture on Non-Topsoiled Areas

0 -

Sown Pasture on Topsoil Stockpiles, former Stockpile Locations or bunds.

1.5 BRN waste dump, Stratford Main Pit waste dump.

Maintenance Fertiliser Application

0

The Stratford rehabilitation progress target for the period 1 July 2011 to 30 June 2012 was nil - as stated in the last Annual Review – reflecting the unavailability of any areas to undergo rehabilitation works. Consistent with this target, no rehabilitation works apart from topsoil stockpile seeding was undertaken. Rehabilitation activities in the next 12 months will centre on:-



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• BRN: waste placement and shaping outer faces to final design, topsoiled and seeded of the

northern dump limits adjacent to Wenham Cox Road. Continued backfilling of the void space to Continue.

• RVW: Backfilling of Main Pit void in the north western corner.

5.3 LAND USE MANAGEMENT

5.3.1 Land use Objective/Current Use Most of the project area was classified in 1982 by the Soil Conservation Service as Class IV land - suitable for grazing with occasional cultivation involving minimal soil conservation techniques. Class IV areas include the gentle eastern foothills and gently undulating land in the western half of the mine site. The majority of the eastern half of the site is considered to consist of Class V land that is suitable for grazing with occasional cultivation. The mid to upper slopes of the eastern hills are considered to be Class VI land which is suitable for grazing only. The central lowlands adjacent to the drainage lines through the mine site are considered to be Class VI grazing land. Prior to mining, the project area was used for cattle grazing and dairying. One of the major objectives of the rehabilitation programme is the re-instatement of Land Capabilities IV, V and VI on areas disturbed and rehabilitated during the course of mining operations. To date, most of the topsoil recovered from areas impacted by mining activities has largely consisted of soil captured from Class IV areas with the remainder being from Class V land. Areas that have been fully rehabilitated predominantly involve completed sections of out of pit waste landforms. Rehabilitation has been conducted in accordance with guidelines stated within Rehabilitation Principles (Section 4.1). On the basis of comment passed by officers of the former DLWC and DMR during past annual rehabilitation site inspections, successful re-instatement of pre-mining land capabilities is being achieved. Cleared areas not required for mining in the short term are used for cattle agistment. Remnant vegetation and areas of natural regeneration, outside of areas to be affected by mining and associated activities are not disturbed. Fencing is erected (where possible) to protect areas of natural regeneration from cattle grazing pressure or erosion. No changes to agricultural land suitability of areas adjacent to mine operations have occurred during the reporting period. Under the Bowen Road North Development Consent Modification dated November 2010 there is a requirement to implement an offset strategy (as described within Section 3.1 of the environmental assessment Bowens Road North Open Cut June 2010 Modification). This offset strategy is described within a Biodiversity Management Plan which was submitted to the Director-General of the Department of Planning and Infrastructure and approved in March 2012.

5.3.2 Final Void Treatment The final Stratford void comprises the area in the vicinity of where the last coal was mined. This area is adjacent to the now closed section of Bowens Road and is the northern extent of the Main Deposit. A detailed plan addressing decommissioning of the final void was approved by the DMR/DLWC in 1999. This plan proposed rapid filling of the void by introducing available surface water flows into the void at the end of mine life (a process estimated to take of the order of twenty (20) years - subject to prevailing rainfall). On completion of filling it was predicted that the void will periodically spill into Avondale Creek.



53

Given expected continuation of mining operations until at least 2020 it is now envisaged that the Main Deposit final void will effectively be filled with waste material. A revised plan addressing the proposed filling of the void with CHPP reject material to below pre mine groundwater levels followed by inert waste capping was approved by the DII – Minerals and Energy Division on 9th February 2010. The final BRN void will be located to the north-north-west of the Stratford Main Deposit void. This void will be considerably smaller (ie approximately one seventh the size) than the Stratford void. This void will be rehabilitated in accordance with the BRN Landscape and Revegetation Management Plan (Resource Strategies 2002a) and Water Management Plan (Resource Strategies 2002b). The Roseville Extension void will be fully backfilled with waste from the Roseville West Pit. The final Roseville West void will be backfilled in accordance with requirements of DII and GSC which are yet to be formalised.

6. ACTIVITIES PROPOSED IN THE NEXT AR PERIOD

6.1 ENVIRONMENTAL MANAGEMENT The following environmental targets have been set for the next 12 months: • Mitigate contributed mine noise emissions where possible;

• Strive to achieve a low level of complaints reported to the mine; and

• Continue backfilling of available mining voids.

6.2 REHABILITATION The following rehabilitation targets are set for the next 12 months: • To continue backfilling of the Bowens Road North pit and placement of waste to permit shaping

in the vicinity of the Main Pit void and within the Bowens Road North ex-pit waste dump. • Approximately 3.0 hectares of final rehabilitation to be completed at SMC.



54

7. REFERENCES

• Applied environmental management consultants (aemc) (2011). Independent Environmental Audit Stratford Mining Complex for Stratford Coal Pty Ltd, Gloucester.

• Gilbert and Associates (2009). Stratford Coal Mine Life of Mine Reject Disposal Plan for Stratford Coal Pty Ltd, Gloucester.

• Gilbert and Associates (2012). Stratford Mining Complex 2011 Water Management Review for Stratford Coal Pty Ltd, Gloucester.

• Invertebrate Identification Australasia (2011). Biological Monitoring of the Stratford Mining Complex for Stratford Coal Pty Ltd, Gloucester.

• Resource Strategies (2001). Bowens Road North Project Landscape and Revegetation Management Plan for Stratford Coal Pty Ltd, Gloucester.

• Resource Strategies (2002a). Bowens Road North Project Flora and Fauna Manageemnt Plan for Stratford Coal Pty Ltd, Gloucester.

• Resource Strategies (2002b). Bowens Road North Project Site Water Management Plan for Stratford Coal Pty Ltd, Gloucester.

• Vipac Engineers & Scientists (2006). Noise Consent and Management Plan for Stratford Coal Pty Ltd, Gloucester.

8. LIST OF PLANS Plan 1 - Site Location Plan Plan 2 - Environmental Monitoring Locations

9. LIST OF APPENDICES

1. Site Location and Monitoring Locations Plans 2. Trains Loaded

3. Meteorological Monitoring

4. Air Quality Monitoring

5. Surface and Groundwater Monitoring

6. Blast Monitoring Results

App

endi

x 1:

• Site Locality Plan • Monitoring Locations

Dungog

StroudRoad

Booral

LimeburnersCreek

Stroud

WardsRiver

Stratford

Gloucester

Craven

Krambach

Nablac

TAREE

Tuncurry

Forster

Treachery Head

PORT STEPHENS

THE

BROADWATER

Hexham

NEWCASTLE

LEGEND

Extent Of Coal Bearing Permian Sediments

MAITLAND

To Sydn

ey

See Fig 2See Fig 2

DuralieCoal Mine

STRATFORDOPERATIONS

A.311

A.315

400

000

E

450

000

E

6 450 000 N

6 400 000 N

6 350 000 N

0

Kilometres

2000

A U S T R A L I AWESTERN

AUSTRALIA

NEW SOUTHWALES

QUEENSLAND

Brisbane

Sydney

GLOUCESTERBASIN

Melbourne

Hobart

Perth

Darwin

SOUTHAUSTRALIA

NORTHERNTERRITORY

VICTORIA

TAS.

Adelaide

ANNUAL REVIEW

SITE LOCATION PLAN

Kilometres

250

Figure 1Doc. No: SC-0008-001-003-02-Rev.6.August 2012

STRATFORD OPERATIONSSTRATFORDCOAL

W2W2

W1W1

W5W5

W8W8

W9W9

W3W3

W3AW3A

W4W4

W6W6

W10W10GW1GW1

RB3RB3

RB2RB2

RB1RB1

GW3GW3

GW8GW8

GW4GW4

CD10CD10

CD9CD9CD6CD6

GW5GW5

GW7GW7

MW7MW7

MW8MW8

MW11MW11

MW12MW12

MW10MW10MW10

MW3MW3

MW4MW4

GW2GW2

MW6MW6

GriffinGriffin

BRWN1BRWN1

D8D8

D7D7

D9D9

D6D6

D10D10

D11D11

HVD1HVD1

HVD3HVD3

HVD4HVD4

HVD4HVD4

HVD2HVD2

1165m

SD7SD7

SD4SD4

SD10SD10

SD10ASD10A

SD12SD12

SD17SD17

SD11SD11SD18SD18

SD16SD16

SD1SD1

SD13SD13

SD14SD14

SD15SD15

SD2SD2

SD3SD3

See Stratford DetailSee Stratford Detail

6 448 000 N6 448 000 N

6 446 000 N6 446 000 N

6 444 000 N6 444 000 N

6 442 000 N6 442 000 N

400

000

E400

000

E

402

000

E402

000

E

404

000

E404

000

E

LEGEND

Mining Lease Boundary

Surface Water QualityMonitoring Site

Sediment Dams

Surface Water Qualityand Flow Monitoring Site

Groundwater Monitoring Site

Static Dust Gauge

High Volume Air Sampler

Meteorological Station

Noise Monitoring Site

Blast Monitoring Site

Noise and Blast Monitoring Site

Doc No: SC-0008-001-003-01-Rev.6

ENVIRONMENTAL MONITORING LOCATIONS

Fig 2

ENVIRONMENTAL MONITORING LOCATIONS

Fig 2

MetresMetres

1000100000

400

000

E

6 446 000 N

BR

IDG

E

STR

EE

T

STREET

WILLIAM

ANNESTREET

AVON

STREET

HIGH

STREET

WOOD

STREET

SH

AK

ES

PE

AR

ES

TR

EE

T

BR

IDG

ES

TR

EE

T

NO

RT

HC

OA

ST

RA

ILW

AY

Avo

n

RiverGloucester Coal Limited

D5

Gloucester Coal Limited

Metres

2500

STRATFORD

Main

Pit

Main

Pit

Bowens

Road

North

Bowens

Road

North

Roseville

West

Roseville

West

Return

Water

Dam

Return

Water

Dam

Eastern

Storage

Dam

Eastern

Storage

Dam

Parkers PitParkers Pit

App

endi

x 2:

Trains Loaded

StartTime5 TrainNo StartTime4 EndTime3

Tonnes Loaded-Stratford Weightometer

1-Jul-11 SF626 10:02:26 11:03:37 3,1721-Jul-11 SF634 22:35:35 23:57:42 3,3542-Jul-11 SF616 4:58:43 6:27:08 3,2182-Jul-11 SF632 12:44:54 14:22:32 3,2832-Jul-11 SF658 20:07:49 21:20:59 3,0573-Jul-11 SF616 3:47:37 5:07:28 3,1583-Jul-11 SF632 11:59:26 12:59:26 3,1024-Jul-11 SF616 3:44:41 5:04:27 3,2414-Jul-11 SF932 14:34:41 16:13:58 3,4085-Jul-11 SF926 6:22:31 7:33:14 3,2505-Jul-11 SF932 14:12:24 16:28:00 3,0166-Jul-11 SF926 5:12:14 6:36:59 2,841

13-Jul-11 SF622 5:37:41 6:44:24 2,89913-Jul-11 SF624 18:51:16 19:52:46 3,01813-Jul-11 SF658 22:40:08 23:44:54 3,03714-Jul-11 SF626 11:08:46 12:11:44 2,93516-Jul-11 SF988 23:12:06 0:54:40 3,10718-Jul-11 SF616 4:30:37 5:47:19 2,99318-Jul-11 SF626 9:07:43 10:09:37 2,71618-Jul-11 SF634 17:20:18 18:41:46 2,82519-Jul-11 SF616 3:46:08 4:43:36 2,75519-Jul-11 SF626 6:17:46 7:19:22 2,88019-Jul-11 SF634 19:34:07 20:30:39 2,82520-Jul-11 SF626 6:52:54 7:55:05 2,95520-Jul-11 SF634 21:40:02 22:54:07 2,96621-Jul-11 SF626 9:07:24 11:10:34 2,81522-Jul-11 SF616 4:50:19 5:49:37 2,90723-Jul-11 SF636 0:22:49 1:20:15 2,77623-Jul-11 SF636 22:28:31 23:23:49 2,82524-Jul-11 SF632 9:13:12 10:20:20 2,76924-Jul-11 SF636 23:30:19 0:38:54 3,04425-Jul-11 SF632 13:47:47 14:57:03 2,78526-Jul-11 SF688 1:38:58 2:37:47 3,05127-Jul-11 SF632 0:26:33 1:34:59 3,28927-Jul-11 SF634 15:28:55 16:37:36 3,08228-Jul-11 SF688 3:42:09 4:50:33 3,07728-Jul-11 SF634 17:23:20 18:56:31 3,24829-Jul-11 SF616 5:54:36 6:59:09 3,34529-Jul-11 SF634 20:05:28 22:25:34 3,04630-Jul-11 SF632 9:55:26 11:23:41 2,96130-Jul-11 SF658 23:45:25 1:01:37 2,69231-Jul-11 SF688 4:20:56 5:30:26 3,34431-Jul-11 SF632 12:15:08 13:24:03 2,95131-Jul-11 SF646 15:13:52 16:23:52 3,0451-Aug-11 SF688 2:08:11 3:37:39 2,8531-Aug-11 SF626 10:32:15 11:37:31 3,1001-Aug-11 SF634 19:26:58 20:41:44 3,298

1-Aug-11 SF636 23:36:57 0:41:54 3,3102-Aug-11 SF626 6:42:32 7:53:18 3,3442-Aug-11 SF632 15:16:20 16:20:15 3,0902-Aug-11 SF636 21:51:02 23:01:14 3,2214-Aug-11 SF616 3:09:28 4:30:19 3,3634-Aug-11 SF634 19:20:33 20:49:19 3,3296-Aug-11 SF70 7:21:06 8:57:54 3,345

15-Aug-11 SF634 17:10:38 18:22:53 3,11816-Aug-11 SF626 6:48:16 8:12:15 3,27916-Aug-11 SF636 23:58:38 1:04:31 3,29017-Aug-11 SF632 13:45:16 14:59:37 3,26618-Aug-11 SF626 6:49:55 8:14:47 3,31918-Aug-11 SF636 23:15:04 0:37:17 3,42620-Aug-11 SF632 14:18:27 15:26:46 2,92910-Sep-11 SF616 2:16:54 5:13:41 3,21610-Sep-11 SF626 5:22:52 7:37:25 3,22110-Sep-11 SF658 19:29:29 21:43:11 3,25911-Sep-11 SF632 8:25:44 11:00:40 3,21111-Sep-11 SF636 22:06:54 1:18:19 3,17812-Sep-11 SF626 3:35:07 8:53:48 3,12112-Sep-11 SF632 11:49:30 18:17:48 3,09712-Sep-11 SF636 20:24:26 22:57:32 3,28415-Sep-11 SF636 1:39:45 3:35:57 3,25215-Sep-11 SF634 15:30:06 17:19:47 3,26916-Sep-11 SF688 3:58:07 6:36:03 5,66516-Sep-11 SF634 22:13:23 0:03:26 3,15017-Sep-11 SF616 3:07:38 5:03:48 3,16417-Sep-11 SF632 12:53:30 14:37:03 3,13017-Sep-11 SF634 21:04:37 23:11:26 3,03318-Sep-11 SF688 2:27:19 5:38:46 3,22318-Sep-11 SF646 16:13:14 17:28:27 3,30019-Sep-11 SF636 0:06:49 1:44:25 3,07020-Sep-11 SF616 3:57:12 5:20:02 3,17320-Sep-11 SF626 9:53:31 11:17:34 2,96420-Sep-11 SF632 14:51:27 15:42:17 3,30221-Sep-11 SF688 1:20:43 3:05:59 3,19221-Sep-11 SF632 14:22:42 15:22:29 3,14021-Sep-11 SF636 23:34:55 3:01:21 3,03422-Sep-11 SF632 19:55:44 22:12:45 3,13122-Sep-11 SF634 22:14:11 23:29:49 2,91423-Sep-11 SF616 9:54:28 13:27:08 3,28723-Sep-11 SF632 13:33:30 15:46:17 2,82424-Sep-11 SF688 1:30:01 2:35:09 2,96924-Sep-11 SF616 4:00:55 5:01:17 3,01324-Sep-11 SF626 10:28:31 12:22:54 3,01724-Sep-11 SF632 16:59:18 18:02:52 3,26724-Sep-11 SF634 20:41:33 21:52:24 2,82525-Sep-11 SF626 8:52:25 10:19:26 3,20125-Sep-11 SF632 15:17:19 16:02:54 2,71925-Sep-11 SF662 21:55:34 23:21:21 3,215

26-Sep-11 SF616 4:25:31 5:57:26 2,66726-Sep-11 SF632 13:44:19 15:42:30 3,15226-Sep-11 SF634 22:13:49 0:46:42 2,84127-Sep-11 SF662 22:53:32 0:03:26 2,82228-Sep-11 SF688 4:31:54 6:35:48 5,59928-Sep-11 SF634 18:53:39 20:06:44 3,06929-Sep-11 SF636 0:32:01 3:15:38 5,69230-Sep-11 SF636 2:34:10 4:53:02 3,20930-Sep-11 SF632 15:14:00 16:21:29 2,948

1-Oct-11 SF616 2:53:05 5:01:26 5,7181-Oct-11 SF688 19:44:14 21:22:57 3,1532-Oct-11 SF615 2:12:22 6:13:37 4,9552-Oct-11 SF632 11:24:24 12:34:57 3,6122-Oct-11 SF662 21:32:23 0:15:06 5,8133-Oct-11 SF688 0:51:42 2:24:58 3,1533-Oct-11 SF632 16:01:43 17:34:38 3,0923-Oct-11 SF636 21:38:22 0:56:59 4,2854-Oct-11 SF616 4:50:58 6:05:37 2,9904-Oct-11 SF632 12:31:42 14:30:24 3,7234-Oct-11 SF634 21:02:36 22:24:20 4,2237-Oct-11 SF626 10:11:30 11:32:26 3,2857-Oct-11 SF636 21:18:13 23:44:10 5,643

10-Oct-11 SF626 5:37:20 8:08:23 3,11213-Oct-11 SF616 4:06:19 5:51:36 3,25313-Oct-11 SF634 19:03:23 20:37:22 3,31014-Oct-11 SF626 8:52:21 10:03:40 2,99614-Oct-11 SF634 20:56:43 22:36:24 3,31815-Oct-11 SF616 3:50:19 5:14:19 3,29115-Oct-11 SF632 14:50:17 16:10:09 3,18615-Oct-11 SF658 21:54:24 0:27:15 3,25216-Oct-11 SF626 5:29:58 7:27:13 3,22617-Oct-11 SF631 14:26:42 16:12:58 3,31218-Oct-11 SF616 10:56:49 11:47:31 3,32118-Oct-11 SF632 14:44:22 16:13:55 3,11019-Oct-11 SF688 0:34:24 2:29:59 4,91719-Oct-11 SF626 6:13:28 7:43:37 3,28219-Oct-11 SF634 22:00:21 0:14:11 5,39220-Oct-11 SF634 19:20:51 20:46:20 3,29321-Oct-11 SF616 5:43:52 7:21:45 3,61921-Oct-11 SF626 10:00:05 11:37:32 2,94221-Oct-11 SF636 23:04:05 0:32:27 3,30422-Oct-11 SF616 3:05:01 5:10:22 3,31922-Oct-11 SF632 13:40:30 15:32:54 3,16023-Oct-11 SF616 5:02:15 6:31:55 3,19623-Oct-11 SF646 16:51:49 18:10:38 3,19027-Oct-11 SF636 23:46:02 3:10:45 5,34128-Oct-11 SF626 5:44:55 8:08:46 3,20828-Oct-11 SF634 18:39:53 20:46:33 3,18230-Oct-11 SF616 5:12:18 6:24:15 3,25430-Oct-11 SF660 18:43:50 20:15:18 3,236

9-Nov-11 SF614 22:54:33 1:39:44 4,65210-Nov-11 SF622 13:41:52 16:15:24 5,04011-Nov-11 SF612 7:33:04 9:37:12 4,92721-Nov-11 SF622 8:54:04 11:34:55 5,11322-Nov-11 SF636 0:02:41 1:19:23 2,82922-Nov-11 SF612 6:20:51 8:30:06 5,49422-Nov-11 SF632 22:21:44 0:58:27 5,43123-Nov-11 SF612 10:11:25 11:29:43 3,16623-Nov-11 SF614 21:26:55 23:44:30 5,56224-Nov-11 SF622 7:09:31 8:37:07 3,25424-Nov-11 SF614 21:33:14 0:06:50 5,52625-Nov-11 SF622 7:13:42 8:51:40 3,02625-Nov-11 SF624 21:27:30 0:31:38 5,36326-Nov-11 SF614 0:58:22 2:15:15 3,22626-Nov-11 SF622 13:35:35 16:16:04 5,02326-Nov-11 SF624 16:16:49 18:08:24 3,28327-Nov-11 SF626 2:07:53 4:39:17 5,71827-Nov-11 SF660 18:02:10 19:29:05 2,99428-Nov-11 SF626 6:17:48 9:03:43 5,74328-Nov-11 SF632 15:38:23 17:55:05 3,06228-Nov-11 SF636 23:42:51 3:55:58 5,84729-Nov-11 SF616 4:52:26 6:34:35 2,98829-Nov-11 SF934 20:13:42 22:52:00 4,96830-Nov-11 SF962 10:55:13 13:46:14 5,21830-Nov-11 SF632 13:50:03 15:25:43 2,805

1-Dec-11 SF633 17:02:12 18:17:00 3,1211-Dec-11 SF936 21:50:20 0:05:15 5,3382-Dec-11 SF632 20:52:51 22:42:45 3,1143-Dec-11 SF622 9:10:00 10:52:00 3,1333-Dec-11 SF624 13:29:08 14:56:46 2,7563-Dec-11 SF614 21:02:08 23:22:54 4,9023-Dec-11 SF688 23:27:51 0:58:19 2,8734-Dec-11 SF632 14:25:00 16:00:00 2,9524-Dec-11 SF624 19:22:51 22:07:30 5,2455-Dec-11 sf688 2:04:15 3:32:26 3,0755-Dec-11 SF616 6:13:27 7:57:57 2,7335-Dec-11 SF622 13:43:00 15:49:07 5,1596-Dec-11 sf616 5:40:17 7:51:06 5,2236-Dec-11 SF626 9:40:02 11:11:08 3,0296-Dec-11 SF634 22:20:00 0:16:35 5,2087-Dec-11 sf626 4:25:00 5:45:00 3,0597-Dec-11 SF932 17:35:40 20:25:00 5,5938-Dec-11 sf924 22:54:48 1:23:21 5,9629-Dec-11 SF924 21:19:24 0:18:43 5,144

10-Dec-11 sf612 9:45:58 11:28:17 2,98810-Dec-11 sf914 19:19:58 21:27:18 5,73511-Dec-11 sf922 11:40:52 13:57:39 5,70911-Dec-11 sf632 15:14:56 16:42:44 3,09512-Dec-11 SF916 0:06:15 7:59:03 5,52412-Dec-11 sf616 8:04:00 9:44:04 3,007

12-Dec-11 SF914 20:59:34 23:25:01 5,30014-Dec-11 SF626 10:25:00 13:15:19 5,41614-Dec-11 SF632 16:53:51 18:24:48 3,11515-Dec-11 SF612 7:13:55 9:12:22 5,28815-Dec-11 SF624 14:50:37 16:00:20 3,12415-Dec-11 SF614 22:38:18 0:35:33 4,94116-Dec-11 SF612 10:40:35 12:09:51 2,77516-Dec-11 sf614 21:37:46 0:20:43 5,48124-Dec-11 SF622 9:35:00 11:35:00 4,63027-Dec-11 SF614 1:54:35 4:39:48 5,29127-Dec-11 SF622 8:33:19 9:49:47 2,85527-Dec-11 SF624 15:01:24 17:21:23 5,42327-Dec-11 SF614 19:38:34 21:18:24 3,39528-Dec-11 SF622 9:45:52 10:45:52 3,36728-Dec-11 SF634 18:52:44 21:32:24 5,49729-Dec-11 SF688 3:50:24 5:01:31 3,16130-Dec-11 SF612 2:51:58 3:51:58 3,12230-Dec-11 SF622 11:05:06 13:45:32 5,22930-Dec-11 SF614 20:26:53 22:29:48 3,10631-Dec-11 SF636 2:13:47 4:02:26 2,92531-Dec-11 SF912 4:43:48 6:49:15 5,00831-Dec-11 sf622 12:15:31 13:39:25 3,164

2-Jan-12 SF932 23:45:18 0:45:18 5,2253-Jan-12 SF612 5:28:19 6:47:42 3,0264-Jan-12 SF624 1:42:14 4:22:35 5,1814-Jan-12 SF612 5:03:17 6:15:06 3,0514-Jan-12 SF634 19:21:22 21:24:15 3,0115-Jan-12 SF622 10:16:20 11:28:37 2,9075-Jan-12 sf632 23:59:15 2:21:16 5,2046-Jan-12 sf688 2:22:25 4:17:45 2,9646-Jan-12 sf622 9:52:17 12:29:35 5,2936-Jan-12 SF624 19:26:56 21:00:12 2,9137-Jan-12 SF612 6:09:49 8:23:01 5,3197-Jan-12 SF622 10:12:41 11:24:05 3,4097-Jan-12 SF688 23:25:03 1:03:13 3,1708-Jan-12 SF616 7:25:00 9:40:00 5,1388-Jan-12 SF624 16:18:34 17:33:54 3,3229-Jan-12 SF 616 3:19:41 4:37:15 3,2269-Jan-12 SF 614 21:10:01 23:55:00 3,117

10-Jan-12 sf624 9:32:30 12:02:16 5,65910-Jan-12 sf622 12:03:48 13:29:58 3,32910-Jan-12 SF614 21:39:13 23:50:33 5,36611-Jan-12 SF612 8:01:30 9:45:27 3,20511-Jan-12 SF 614 23:16:05 1:20:25 5,53912-Jan-12 SF622 10:21:10 12:02:47 3,25112-Jan-12 SF614 19:18:05 21:31:57 5,50413-Jan-12 SF 612 2:42:46 4:04:09 3,25413-Jan-12 sf614 20:49:34 22:21:49 3,28914-Jan-12 SF622 9:29:53 11:23:03 3,20014-Jan-12 SF614 18:03:33 22:03:30 5,494

14-Jan-12 sf688 22:10:40 0:30:41 3,23315-Jan-12 SF622 10:17:33 12:44:59 5,45515-Jan-12 SF632 16:58:19 18:17:02 3,04816-Jan-12 SF688 5:45:00 7:50:00 5,43116-Jan-12 SF622 9:28:05 10:41:24 2,86817-Jan-12 SF624 21:14:47 22:57:08 6,03217-Jan-12 SF614 23:00:46 1:50:29 5,08718-Jan-12 sf622 10:27:49 11:53:00 3,08818-Jan-12 SF616 21:25:35 0:00:36 4,80719-Jan-12 SF688 2:27:10 4:22:29 3,02019-Jan-12 sf624 15:40:07 16:50:16 2,97019-Jan-12 SF614 18:42:56 21:16:22 5,11520-Jan-12 SF626 10:12:53 12:56:55 5,14520-Jan-12 SF932 14:21:44 15:34:06 3,20921-Jan-12 SF 616 4:20:26 5:35:51 3,11521-Jan-12 SF922 11:10:27 13:25:17 5,38921-Jan-12 SF932 18:51:07 19:30:57 1,84922-Jan-12 SF932 16:18:48 17:43:08 4,36022-Jan-12 SF962 22:10:58 0:17:29 5,42423-Jan-12 SF616 4:19:10 5:43:58 3,07023-Jan-12 sf926 6:26:24 8:55:50 5,64224-Jan-12 sf936 3:56:27 7:40:52 3,11024-Jan-12 SF612 9:29:00 11:08:02 8,64325-Jan-12 sf614 0:06:38 1:42:24 3,14025-Jan-12 sf914 3:47:58 5:55:25 5,62625-Jan-12 sf923 14:50:44 17:31:26 3,32225-Jan-12 UNKNOWN 17:47:09 18:47:09 025-Jan-12 UNKNOWN 22:15:56 0:57:56 14325-Jan-12 UNKNOWN 23:57:56 0:57:56 14327-Jan-12 sf932 13:25:57 16:27:44 9,12727-Jan-12 sf932 16:36:48 18:14:34 3,07128-Jan-12 SF936 2:34:49 6:13:43 5,52728-Jan-12 SF912 6:18:54 8:42:49 3,29128-Jan-12 SF914 20:51:19 21:16:25 77629-Jan-12 SF988 22:17:08 1:14:01 10,33330-Jan-12 SF932 17:45:23 19:56:31 3,18831-Jan-12 SF922 10:46:01 13:53:16 5,3271-Feb-12 sf912 5:01:26 5:37:02 8751-Feb-12 SF912 5:37:34 5:41:19 2401-Feb-12 SF912 5:42:32 8:07:24 4,4051-Feb-12 SF922 11:02:11 12:15:24 3,2982-Feb-12 SF926 12:24:13 13:55:44 3,2043-Feb-12 sf912 7:03:50 7:05:25 1,8393-Feb-12 sf912 8:00:09 8:48:26 3,7043-Feb-12 SF932 14:38:27 15:52:55 3,2594-Feb-12 SF916 4:44:10 6:49:04 3,2665-Feb-12 SF912 2:50:24 5:01:57 3,1885-Feb-12 SF988 5:02:25 7:59:07 5,5295-Feb-12 sf924 13:19:40 18:49:02 5,7395-Feb-12 Sf 914 18:49:30 20:16:30 3,229

6-Feb-12 SF926 7:01:06 8:50:37 3,4376-Feb-12 SF934 19:37:22 21:25:42 3,3138-Feb-12 sf926 16:42:05 19:10:08 5,6459-Feb-12 SF914 21:20:46 23:33:27 5,480

14-Feb-12 SF622 11:11:38 12:11:38 2,85914-Feb-12 sf614 22:12:13 0:10:24 5,12115-Feb-12 SF616 2:54:47 4:26:03 2,65115-Feb-12 SF634 18:54:22 21:29:10 2,77515-Feb-12 SF614 21:34:06 0:53:16 5,46216-Feb-12 SF626 5:22:10 7:45:43 2,82716-Feb-12 SF614 21:43:56 23:53:46 5,05517-Feb-12 SF622 9:28:40 10:42:38 2,62021-Feb-12 sf688 2:31:19 4:28:17 5,26824-Feb-12 SF636 22:47:25 0:36:11 3,10525-Feb-12 sf632 13:44:48 15:49:38 3,06226-Feb-12 SF614 23:43:10 1:48:21 4,75529-Feb-12 SF616 4:46:35 6:01:00 3,2311-Mar-12 SF626 6:49:52 8:54:54 2,9231-Mar-12 sf614 22:28:53 23:48:23 2,9642-Mar-12 SF622 10:10:16 11:26:51 2,9413-Mar-12 sf614 0:20:45 1:51:39 2,4763-Mar-12 SF688 4:51:49 7:38:10 5,1493-Mar-12 SF622 16:44:49 18:06:45 2,8464-Mar-12 SF688 2:18:37 5:33:06 5,6384-Mar-12 SF624 7:41:18 9:21:08 3,1575-Mar-12 SF626 5:27:14 6:37:54 2,9036-Mar-12 SF622 5:10:17 7:01:21 2,9156-Mar-12 sf912 10:32:41 12:56:16 5,4987-Mar-12 SF936 22:10:00 23:50:00 5,0588-Mar-12 SF932 17:30:00 19:20:00 5,1629-Mar-12 SF632 9:42:27 11:06:11 2,9249-Mar-12 sf933 21:53:31 23:45:44 4,969

10-Mar-12 sf616 6:40:30 8:00:19 2,90310-Mar-12 SF622 12:31:58 15:22:17 5,35810-Mar-12 SF924 16:45:00 19:10:23 4,84110-Mar-12 sf614 21:35:40 23:05:22 3,15611-Mar-12 SF916 5:48:33 7:51:04 5,10711-Mar-12 SF962 21:45:00 23:50:00 5,26611-Mar-12 sf688 23:51:17 1:37:23 3,14212-Mar-12 sf622 5:23:41 6:50:00 3,04612-Mar-12 SF624 15:08:47 16:21:43 3,03312-Mar-12 SF614 19:36:42 20:52:29 3,02117-Mar-12 SF632 13:52:45 15:17:04 2,94517-Mar-12 SF614 21:16:30 23:04:52 3,03118-Mar-12 SF688 4:20:44 5:30:04 2,84718-Mar-12 SF622 12:47:23 14:00:21 2,81918-Mar-12 SF932 16:59:05 19:43:23 5,10519-Mar-12 SF688 2:08:00 3:44:00 3,00519-Mar-12 sf916 3:47:35 8:03:39 5,13719-Mar-12 SF632 18:49:47 22:05:12 3,451

19-Mar-12 sf614 22:06:20 0:52:00 5,05620-Mar-12 SF612 6:54:36 9:14:17 3,42420-Mar-12 SF622 12:57:17 15:34:52 5,42820-Mar-12 sf624 22:47:30 1:06:14 5,13621-Mar-12 sf622 14:52:09 16:47:56 5,12221-Mar-12 SF924 16:49:03 20:19:43 5,37322-Mar-12 SF614 5:26:51 8:03:14 5,20122-Mar-12 sf612 13:37:57 16:34:08 5,47322-Mar-12 SF624 16:45:53 17:56:12 3,13622-Mar-12 SF614 22:42:30 1:13:09 5,17823-Mar-12 SF688 3:48:35 7:30:10 5,16623-Mar-12 sf612 7:48:35 9:37:58 2,96423-Mar-12 sf622 13:35:48 15:07:10 2,92023-Mar-12 SF634 21:09:29 22:39:55 3,12524-Mar-12 SF688 5:03:16 6:43:53 2,86224-Mar-12 sf612 6:48:24 11:05:05 5,22424-Mar-12 SF624 18:08:53 19:31:04 2,75325-Mar-12 SF626 10:13:02 12:30:37 5,04225-Mar-12 SF632 19:02:11 23:03:35 3,11926-Mar-12 SF688 0:55:39 3:08:12 4,97726-Mar-12 SF616 4:47:25 8:23:11 3,05826-Mar-12 SF622 9:10:06 10:25:54 2,78626-Mar-12 SF932 14:32:34 17:11:43 5,15726-Mar-12 SF634 18:49:29 21:33:57 5,41226-Mar-12 sf688 23:45:03 1:17:46 3,08627-Mar-12 SF622 14:39:34 15:39:34 5,05427-Mar-12 SF624 18:23:11 20:15:22 2,77127-Mar-12 SF614 21:52:49 0:27:35 5,13828-Mar-12 SF988 10:10:12 12:25:37 4,80828-Mar-12 SF624 19:25:00 20:44:00 2,97528-Mar-12 sf988 23:25:45 2:08:06 4,98529-Mar-12 sf612 5:50:51 7:30:27 2,94729-Mar-12 SF624 15:21:55 20:53:01 5,18130-Mar-12 sf614 8:33:02 9:14:04 5,19630-Mar-12 SF622 9:34:58 11:29:18 2,91930-Mar-12 SF914 22:12:54 1:31:29 5,25131-Mar-12 sf922 8:16:25 9:51:22 3,21131-Mar-12 SF924 19:30:00 22:13:09 5,201

1-Apr-12 SF988 1:44:03 5:15:49 2,9291-Apr-12 SF614 5:20:59 8:27:10 4,7652-Apr-12 SF922 0:54:34 1:54:34 3,0763-Apr-12 SF914 0:36:53 4:44:29 5,3163-Apr-12 sf914 14:42:18 19:49:57 5,3475-Apr-12 SF926 14:01:39 17:46:06 5,3196-Apr-12 SF916 10:47:57 13:54:45 5,9147-Apr-12 sf612 6:21:14 9:11:12 4,5268-Apr-12 SF622 10:06:37 11:42:27 3,0879-Apr-12 sf688 3:45:09 5:30:02 2,9399-Apr-12 SF624 16:36:43 19:19:38 5,1749-Apr-12 SF614 20:54:25 23:08:40 3,018

10-Apr-12 SF934 2:30:07 4:37:33 4,57310-Apr-12 sf626 10:09:20 12:28:09 5,08410-Apr-12 SF636 22:20:59 22:44:05 5,32411-Apr-12 SF636 10:12:11 13:57:06 3,15611-Apr-12 SF632 21:07:43 0:48:15 5,20112-Apr-12 SF612 5:58:49 8:36:19 4,77812-Apr-12 sf924 14:58:41 14:58:47 012-Apr-12 sf924 14:58:57 18:25:41 5,21313-Apr-12 SF636 0:08:00 1:28:37 2,67613-Apr-12 SF922 11:43:14 13:41:14 5,24913-Apr-12 SF624 16:16:16 17:39:51 2,68214-Apr-12 SF922 5:33:00 6:50:00 2,64514-Apr-12 SF914 21:22:26 23:41:08 5,45915-Apr-12 SF924 13:38:55 16:22:49 4,90915-Apr-12 Sf914 22:41:28 1:50:37 5,15816-Apr-12 SF912 6:07:31 8:49:51 5,23116-Apr-12 SF688 20:47:42 9:42:08 5,12217-Apr-12 SF922 15:00:11 17:38:24 5,39518-Apr-12 SF922 16:34:34 19:47:47 5,35619-Apr-12 SF912 10:26:37 12:35:03 5,39220-Apr-12 SF988 0:44:48 3:45:40 5,25820-Apr-12 SF912 3:46:46 6:56:05 5,62320-Apr-12 SF914 21:32:38 23:30:08 4,53521-Apr-12 SF932 20:21:58 21:21:58 5,27122-Apr-12 SF914 1:42:52 3:30:55 3,20322-Apr-12 Sf 912 10:10:55 13:06:49 5,54822-Apr-12 SF912 23:31:55 2:13:04 5,33723-Apr-12 sf 912 4:57:09 7:25:58 3,48323-Apr-12 SF958 21:26:58 0:06:19 4,85424-Apr-12 sf936 23:15:00 7:50:00 5,59225-Apr-12 SF936 21:31:36 0:43:24 5,83026-Apr-12 SF636 19:24:15 21:32:42 4,95226-Apr-12 SF614 21:33:42 23:04:22 3,07527-Apr-12 SF622 11:16:35 12:16:35 2,97127-Apr-12 SF688 23:59:19 1:40:41 3,00630-Apr-12 SF612 3:08:04 5:19:41 3,12130-Apr-12 SF935 5:21:07 9:12:19 5,12130-Apr-12 sf614 21:07:45 23:35:54 5,06330-Apr-12 SF636 23:36:42 1:27:36 3,1112-May-12 SF636 2:28:19 5:30:00 5,0542-May-12 SF924 19:35:00 22:18:44 5,2953-May-12 sf988 2:24:42 5:07:55 5,3673-May-12 sf515 5:24:57 6:40:09 2,9723-May-12 sf934 19:39:44 23:02:00 2,4443-May-12 SF688 23:55:30 1:28:33 2,9594-May-12 sf616 4:23:44 6:33:24 5,0364-May-12 SF636 20:22:57 23:00:15 5,0505-May-12 sf616 6:33:01 9:33:30 3,1465-May-12 SF626 9:37:50 12:33:16 4,9466-May-12 SF632 10:45:48 12:56:47 3,009

6-May-12 SF624 19:05:00 21:33:00 5,5147-May-12 sf612 3:53:19 5:46:14 3,2157-May-12 SF622 13:48:24 17:19:42 5,8597-May-12 SF624 22:34:55 4:32:57 5,1778-May-12 SF616 5:03:03 8:40:27 5,5058-May-12 SF625 20:15:46 5:28:43 3,3149-May-12 SF612 5:29:25 7:53:22 2,9799-May-12 SF624 19:46:50 23:47:00 5,447

10-May-12 SF624 22:54:04 1:21:50 5,08311-May-12 SF934 21:29:17 0:48:01 5,36812-May-12 SF932 23:37:45 0:37:45 5,08313-May-12 SF922 16:08:51 18:09:10 5,09113-May-12 SF924 21:22:29 1:22:31 5,05821-May-12 SF614 0:23:36 3:52:53 5,21021-May-12 SF612 4:30:32 6:16:33 2,91222-May-12 SF612 5:11:01 6:36:15 2,90522-May-12 SF636 23:48:17 0:48:17 2,94023-May-12 SF622 17:13:30 20:01:06 3,20624-May-12 SF926 5:55:00 8:05:54 4,95624-May-12 SF622 10:53:25 12:22:30 3,15725-May-12 sf688 1:25:17 3:36:53 3,20325-May-12 SF632 15:01:08 16:41:16 3,10825-May-12 SF914 21:38:47 0:50:31 5,26926-May-12 SF688 5:18:55 8:04:04 5,06526-May-12 SF612 9:44:53 10:57:53 3,15527-May-12 SF614 0:37:03 2:09:09 3,08627-May-12 SF916 6:07:43 9:46:52 4,86427-May-12 SF622 12:51:19 15:22:21 3,08027-May-12 SF932 16:35:00 19:15:00 5,44728-May-12 SF688 4:38:23 6:14:29 3,15728-May-12 sf632 16:46:58 20:50:10 3,31529-May-12 sf932 13:52:36 17:18:17 3,15930-May-12 SF688 4:40:00 5:50:00 2,82130-May-12 SF924 19:05:07 20:28:09 3,17430-May-12 SF636 23:10:00 1:20:33 3,04431-May-12 SF626 10:35:00 12:30:00 2,90031-May-12 SF936 23:43:45 2:38:00 5,429

1-Jun-12 SF916 11:53:03 12:53:03 5,3001-Jun-12 SF622 14:30:47 16:06:31 3,0572-Jun-12 sf612 3:01:17 4:24:33 2,9752-Jun-12 SF624 18:03:55 19:29:29 2,9973-Jun-12 SF988 0:27:33 3:27:00 5,2223-Jun-12 SF612 9:08:49 10:52:29 3,0323-Jun-12 SF924 23:19:28 2:20:33 5,0524-Jun-12 SF624 14:25:04 15:25:04 2,9045-Jun-12 SF688 2:40:58 4:40:16 2,8125-Jun-12 SF634 20:08:09 21:08:09 2,9956-Jun-12 SF612 10:00:00 11:32:00 2,9436-Jun-12 sf922 11:45:08 14:05:00 5,3607-Jun-12 SF636 0:41:42 1:52:03 2,897

7-Jun-12 sf922 9:36:01 11:59:46 5,5017-Jun-12 sf624 17:28:44 19:12:14 3,0688-Jun-12 SF936 1:50:22 4:19:51 4,9258-Jun-12 SF922 5:21:07 8:26:05 5,4418-Jun-12 Sf624 10:22:32 11:40:25 2,734

12-Jun-12 sf988 9:52:55 10:41:46 5,24012-Jun-12 SF622 10:42:24 12:17:26 3,07212-Jun-12 SF634 23:25:00 1:40:20 5,03713-Jun-12 SF622 7:05:18 9:44:19 4,98713-Jun-12 SF624 13:45:00 15:33:12 3,05913-Jun-12 SF626 16:51:52 19:01:52 4,62114-Jun-12 SF936 2:20:00 4:20:00 5,39314-Jun-12 SF934 17:32:33 20:36:40 5,36514-Jun-12 SF 688 20:41:19 23:44:03 4,91315-Jun-12 SF912 5:23:47 7:07:03 3,07115-Jun-12 SF624 21:40:55 23:06:10 3,08016-Jun-12 SF612 11:10:12 12:10:12 3,13317-Jun-12 SF988 2:44:41 3:44:41 5,58617-Jun-12 SF626 6:29:14 9:23:29 5,30817-Jun-12 SF622 13:00:08 14:45:49 3,04017-Jun-12 sf632 18:50:00 22:32:52 5,38417-Jun-12 SF660 23:19:24 2:37:48 5,49818-Jun-12 SF912 12:34:39 15:36:58 5,58918-Jun-12 sf932 15:40:00 19:15:00 4,99819-Jun-12 SF988 2:02:39 4:37:34 5,47519-Jun-12 sf616 6:11:52 8:35:18 4,92019-Jun-12 SF914 21:26:24 0:50:46 5,70020-Jun-12 SF622 10:15:55 14:05:45 5,43920-Jun-12 sf632 15:48:00 17:35:12 5,04021-Jun-12 SF916 2:20:00 5:31:32 5,76921-Jun-12 SF622 12:43:11 13:55:16 2,92022-Jun-12 SF914 2:29:29 3:29:29 5,41222-Jun-12 SF688 4:16:36 5:37:30 2,95023-Jun-12 SF688 9:40:06 12:24:59 5,24123-Jun-12 SF912 14:04:32 17:42:33 5,55223-Jun-12 SF 614 21:56:09 23:13:15 2,73524-Jun-12 SF622 9:30:00 11:03:00 2,77524-Jun-12 SF936 22:00:00 0:34:15 5,00725-Jun-12 SF636 0:37:05 1:54:16 2,88625-Jun-12 SF924 16:30:00 19:04:14 3,33925-Jun-12 SF688 21:15:48 23:57:06 5,02626-Jun-12 SF912 5:53:41 8:43:03 3,22426-Jun-12 sf622 15:01:00 18:10:27 5,20027-Jun-12 SF612 5:51:39 8:25:42 5,25127-Jun-12 SF922 13:36:07 16:58:17 5,26228-Jun-12 SF914 0:18:06 4:10:14 5,673

App

endi

x 3:

Meteorological Monitoring

Figure 3-1: Monthly Recorded Rainfall during the Reporting Period

Figure 3-2: Minimum, Maximum and Average Wind Speeds during the Reporting Period

Figure 3-3: Minimum, Maximum and Average Temperatures during the Reporting Period

050

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Stratford Weather Station Monthly Rainfall

July 2011 to June 2012

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Stratford Weather Station Monthly Wind SpeedsJuly 2011 to June 2012

Minimum Wind Speed (m/s) Average Wind Speed (m/s) Maximum Wind Speed (m/s)

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Stratford Weather Station Monthly TemperatureJuly 2011 to June 2012

Minimum Temperature (degC) Average Temperature (degC) Maximum Temperature (degC)

Figure 3-4: Monthly Windroses Displaying Wind Direction and Speed Frequencies during the Reporting Period

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Wind Rose - July 2011Dominant Wind Direction at Stratford

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Wind Rose - August 2011Dominant Wind Direction at Stratford

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Wind Rose - September 2011Dominant Wind Direction at Stratford

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Wind Rose - October 2011Dominant Wind Direction at Stratford

Number in Class

Figure 3-4 (Continued): Monthly Windroses Displaying Wind Direction and Speed Frequencies during the Reporting Period

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Wind Rose - November 2011Dominant Wind Direction at Stratford

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Wind Rose - December 2011Dominant Wind Direction at Stratford

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Wind Rose - January 2012Dominant Wind Direction at Stratford

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Wind Rose - February 2012Dominant Wind Direction at Stratford

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Wind Rose - March 2012Dominant Wind Direction at Stratford

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Wind Rose - April 2012Dominant Wind Direction at Stratford

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Wind Rose - May 2012Dominant Wind Direction at Stratford

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Wind Rose - June 2012Dominant Wind Direction at Stratford

Number in Class

Figure 3-4 (Continued): Monthly Windroses Displaying Wind Direction and Speed Frequencies during the Reporting Period

App

endi

x 4:

Air Quality Monitoring

Figure 4-1: Depositional Dust Monitoring Results from July 2011 to June 2012

Figure 4-2: Depositional Dust Annual Averages from July 2011 to June 2012

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Jul-11 Aug-11 Sep-11 Oct-11 Nov-11 Dec-11 Jan-12 Feb-12 Mar-12 Apr-12 May-12 Jun-12

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Stratford Dust Gauge MonitoringJuly 2011 to June 2012

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Stratford Dust Gauge Monitoring

Annual AveragesJuly 2011 to June 2012

Figure 4-3: High Volume Air Sampler (HVAS) PM10 Results

Figure 4-4: HVAS PM10 Rolling Annual Average Results

Figure 4-4: HVAS Total Suspended Particulates (TSP) Results

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Jul-2011 Aug-2011 Sep-2011 Oct-2011 Nov-2011 Dec-2011 Jan-2012 Feb-2012Mar-2012 Apr-2012 May-2012 Jun-2012

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Stratford HVAS Monitoring (PM10) July 2011 to June 2012

Stratford Craven Ellis Clarke Cassar NEPM 24 hr Av. ug/m4

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Stratford HVAS Monitoring (PM10) Annual Rolling Average - July 2011 to June 2012

Stratford Craven Ellis Clarke Cassar Cassar EPA Limit

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Stratford HVAS Monitoring (TSP) July 2011 to June 2012

Stratford Craven Ellis Clarke Cassar OEH limit

App

endi

x 5:

Surface Water and Groundwater Monitoring

Appendix

Surface waters

W1

DATE EVENT Flow pH Cond. Temp TDS TSS Turbidity Chloride Sulphate Iron (filt.) Tot. N Tot. P Calcium Mg Copper Arsenic Cd Cr Boron Mercury Mn Lead AlkalinityRate (uS/cm) °C (mg/L) (mg/L) (NTU) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L)

21-Jul-11 Event Mod Flow 6.7 138 -- 122 66 106.7 23 7 1.86 1.4 0.2 4 3 0.003 <0.001 <0.0001 0.001 <0.05 <0.0001 0.043 0.001 1521-Aug-11 Event Low-Mod Flow 6.6 254 12.3 236 84 156.0 45 8 4.34 1.6 0.51 7 5 0.003 0.002 <0.0001 0.002 <0.05 <0.0001 0.113 0.003 3430-Sep-11 Routine Low Flow 7.3 397 15.9 258 <5 3.7 79 11 1.72 0.4 <0.01 19 11 0.001 <0.001 <0.0001 0.001 <0.05 <0.0001 0.071 <0.001 713-Oct-11 Event Low-Mod Flow 6.4 180 14.1 192 34 89.0 33 4 2.95 1.1 0.15 5 3 0.003 0.001 <0.0001 0.002 <0.05 <0.0001 0.046 0.002 24

24-Nov-11 Event Low Flow 7.1 320 17.7 304 50 96.8 70 <1 3.66 2.1 0.33 9 7 0.004 0.002 <0.0001 <0.001 <0.05 <0.0001 0.097 0.003 4030-Dec-11 Routine Low Flow 7.1 278 19.5 175 <5 6.5 44 6 1.78 0.2 0.08 12 7 0.002 0.001 <0.0001 <0.001 <0.05 <0.0001 0.05 <0.001 6026-Jan-12 Event Low Flow 7.2 327 20.8 186 26 30.9 23 3 1.48 0.8 <0.01 6 4 0.007 0.001 <0.0001 <0.001 <0.05 <0.0001 0.027 <0.001 2929-Feb-12 Routine Low Flow 7.1 243 23.1 152 8 26.5 32 6 3.03 0.4 0.02 11 6 <0.001 0.001 <0.0001 <0.001 <0.05 <0.0001 0.108 0.001 4729-Mar-12 Routine Low Flow 7.5 280 17.9 172 <5 11.5 41 7 1.58 0.2 0.07 12 6 <0.001 <0.001 <0.0001 <0.001 <0.05 <0.0001 0.048 <0.001 5230-Apr-12 Routine Low Flow 7.2 326 15.6 124 5 9.6 53 8 1.76 0.2 0.04 14 8 <0.001 <0.001 <0.0001 <0.001 <0.05 <0.0001 0.045 <0.001 5831-May-12 Routine Low Flow 7.3 388 12.9 222 7 9.1 73 12 2.29 0.2 0.04 17 10 <0.001 <0.001 <0.0001 <0.001 <0.05 <0.0001 0.122 <0.001 8229-Jun-12 Routine Low Flow 7.5 317 12.7 164 5 12.2 54 10 2.01 0.5 0.04 14 8 0.002 0.006 0.0001 <0.001 <0.05 <0.0001 0.078 <0.001 54

W2


21-Jul-11 Event Mod Flow 6.0 196 13.9 182 53 83.2 31 20 2.32 1.3 0.2 5 5 0.004 <0.001 0.0002 0.001 <0.05 <0.0001 0.048 0.002 1621-Aug-11 Event Mod-Low Flow 6.7 406 12 282 39 75.6 72 31 2.91 1.2 0.17 12 10 0.002 0.002 <0.0001 0.004 <0.05 <0.0001 0.136 0.002 4530-Sep-11 routine Low Flow 7.4 547 15.9 358 5 6.8 112 24 1.64 0.8 0.05 19 16 0.002 0.001 <0.0001 <0.001 <0.05 <0.0001 0.102 <0.001 783-Oct-11 Event Mod Flow 6.6 426 14.3 290 30 77.0 93 27 2.3 1.6 0.15 10 12 0.002 <0.001 <0.0001 0.002 <0.05 <0.0001 0.061 0.002 31

24-Nov-11 Event Low Flow 7.2 451 18.4 308 16 18.2 82 1 3.5 1.4 0.1 12 10 0.001 0.003 <0.0001 <0.001 <0.05 <0.0001 0.252 <0.001 7330-Dec-11 Routine Low Flow 7.1 336 21 218 5 14.1 60 6 1.9 0.4 0.12 12 9 <0.001 0.001 0.0001 <0.001 <0.05 <0.0001 0.090 <0.001 6726-Jan-12 Event Low Flow 7.2 545 20.7 320 6 8.4 85 6 1.5 0.8 0.04 13 10 0.002 0.001 <0.0001 <0.001 <0.05 <0.0001 0.136 <0.001 6029-Feb-12 Routine Low Flow 7.0 277 23.1 183 10 27.9 41 8 2.4 0.5 0.04 13 8 <0.001 0.001 <0.0001 <0.001 <0.05 <0.0001 0.110 <0.001 5829-Mar-12 Routine Low Flow 7.6 345 18 198 5 11.8 55 10 1.7 0.2 0.07 12 8 <0.001 0.001 <0.0001 <0.001 <0.05 <0.0001 0.105 <0.001 6030-Apr-12 Routine Low Flow 7.2 379 15.5 164 <5 10.7 72 9 1.6 0.3 0.02 15 9 0.001 <0.001 <0.0001 <0.001 <0.05 <0.0001 0.053 <0.001 6031-May-12 Routine Low Flow 7.2 682 13.1 418 <5 10.7 164 51 0.7 0.5 0.03 17 18 <0.001 <0.001 <0.0001 <0.001 <0.05 <0.0001 0.104 <0.001 5729-Jun-12 Routine Low Flow 7.3 418 12.3 270 6 11.9 86 23 1.4 0.7 0.05 12 10 0.002 0.006 <0.0001 <0.001 <0.05 <0.0001 0.062 <0.001 49

W3


21-Jul-11 Event Low Flow 6.9 157 12.9 157 27 86 21 11 2.01 1.1 0.15 5 3 0.002 <0.001 <0.0001 <0.001 <0.05 <0.0001 0.061 0.001 2621-Aug-11 Event Low Flow 6.8 283 13.9 186 27 63 44 11 1.72 2 0.36 8 6 0.003 0.002 <0.0001 0.001 <0.05 <0.0001 0.128 <0.001 4930-Sep-11 routine Low Flow 7.6 486 17.4 324 138 140 76 5 3.91 4.2 0.3 18 13 0.007 0.004 <0.0001 0.002 <0.05 <0.0001 0.632 0.003 1123-Oct-11 Event Low Flow 6.6 231 14.6 151 16 50 35 9 1.90 12.2 0.35 8 6 0.001 0.002 0.0001 0.001 <0.05 <0.0001 0.095 0.001 42

24-Nov-11 Event Low Flow 7.3 394 17.9 270 15 36 59 10 1.36 3.3 0.48 10 8 0.002 0.002 <0.0001 <0.001 <0.05 <0.0001 0.174 <0.001 8030-Dec-11 Routine Low Flow 7.1 339 20.8 211 51 73 53 6 2.54 2.1 0.29 13 8 0.001 0.003 <0.0001 <0.001 <0.05 <0.0001 0.275 0.002 7726-Jan-12 Event Low Flow 7.2 335 21 206 7 28 53 9 1.07 2 0.35 12 9 0.003 0.002 <0.0001 <0.001 <0.05 <0.0001 0.113 <0.001 7429-Feb-12 Routine Low Flow 7.0 345 23.9 188 10 15 46 5 1.18 1.7 0.21 14 9 0.001 0.002 <0.0001 <0.001 <0.05 <0.0001 0.45 <0.001 7729-Mar-12 Routine Low Flow 7.4 370 18.3 204 <5 16 54 7 1.12 1.1 0.25 14 9 <0.001 0.002 <0.0001 <0.001 <0.05 <0.0001 0.233 <0.001 7430-Apr-12 Routine Low Flow 7.2 422 16.6 176 7 17 67 5 1.36 2 0.23 16 10 <0.001 0.002 <0.0001 <0.001 <0.05 <0.0001 0.289 <0.001 8931-May-12 Routine Low Flow 7.4 506 16 298 186 246 82 5 5.89 6.5 0.72 20 13 0.007 0.004 <0.0001 0.002 <0.05 <0.0001 1.43 0.005 14929-Jun-12 Routine Low Flow 7.3 396 13.8 222 10 15 65 8 1.67 4.2 0.7 14 9 0.002 0.007 0.0001 <0.001 <0.05 <0.0001 0.318 <0.001 78

W3A


21-Jul-11 Event Low Flow 6.8 155 13 151 15 81 21 11 1.07 0.8 0.11 5 4 0.001 <0.001 <0.0001 <0.001 <0.05 <0.0001 0.042 0.001 2721-Aug-11 Event Low Flow 6.9 234 12.6 170 20 59 37 9 1.60 1 0.13 7 5 0.002 0.002 <0.0001 0.004 <0.05 <0.0001 0.084 <0.001 3730-Sep-11 routine Low Flow 7.5 407 16.1 252 5 8 76 5 0.96 0.7 <0.01 15 10 0.003 <0.001 0.0001 0.001 <0.05 <0.0001 0.26 <0.001 833-Oct-11 Event Low Flow 6.8 219 14.7 147 10 49 33 9 1.65 0.9 0.11 8 6 <0.001 0.001 <0.0001 <0.001 <0.05 <0.0001 0.088 <0.001 4024-Nov-11 Event Low Flow 7.33 321 18.7 244 14 29 53 7 1.30 1.6 0.05 9 7 0.003 0.002 <0.0001 <0.001 <0.05 <0.0001 0.124 <0.001 5730-Dec-11 Routine Low Flow 7.14 317 20.5 140 <5 4 52 5 1.18 0.2 0.08 12 8 <0.001 0.001 <0.0001 <0.001 <0.05 <0.0001 0.202 <0.001 7426-Jan-12 Event Low Flow 7.19 269 20.9 198 18 45 42 8 1.23 0.5 0.08 11 7 <0.001 0.001 <0.0001 <0.001 <0.05 <0.0001 0.083 <0.001 5729-Feb-12 Routine Low Flow 7.04 324 23.4 162 6 9 45 5 1.13 0.6 0.04 13 8 <0.001 0.002 <0.0001 <0.001 <0.05 <0.0001 0.331 <0.001 7129-Mar-12 Routine Low Flow 7.3 345 18.3 180 5 17 50 7 1.53 0.3 0.23 13 8 <0.001 0.001 <0.0001 <0.001 <0.05 <0.0001 0.32 <0.001 7030-Apr-12 Routine Low Flow 7.83 379 16.3 164 5 8 63 5 1.50 0.4 0.02 16 10 <0.001 0.002 <0.0001 <0.001 <0.05 <0.0001 0.281 <0.001 7631-May-12 Routine Low Flow 7.45 413 13.9 226 <5 7 18 71 3.00 0.7 0.08 18 11 <0.001 0.001 <0.0001 <0.001 <0.05 <0.0001 0.429 <0.001 11629-Jun-12 Routine Low Flow 7.18 305 13.8 224 <5 6 53 8 1.15 0.2 0.02 11 7 0.001 0.003 0.0004 <0.001 <0.05 <0.0001 0.275 <0.001 61

W4

DATE EVENT Flow pH Cond. TDS Temp TDS TSS Turbidity Chloride Sulphate Iron (filt.) Tot. N Tot. P Calcium Mg Copper Arsenic Cd Cr Boron Mercury Mn Lead AlkalinityRate (uS/cm) (mg/L) °C (mg/L) (mg/L) (NTU) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L)

21-Jul-11 Event Mod Flow 6 277 -- 14.1 230 35 79.9 45 32 1.83 1.4 0.16 7 7 0.002 <0.001 <0.0001 <0.001 <0.05 <0.0001 0.046 0.001 2221-Aug-11 Event Low-Mod Flow 6.9 578 -- 12.1 360 20 65.1 110 58 1.88 1.2 0.21 15 18 0.002 0.001 <0.0001 <0.001 <0.05 <0.0001 0.187 0.002 4830-Sep-11 Routine Low Flow 7.6 800 -- 16.5 522 <5 9.5 202 50 0.64 0.8 <0.01 20 25 0.005 0.001 <0.0001 0.002 <0.05 <0.0001 0.087 <0.001 823-Oct-11 Event Mod Flow 6.6 533 -- 14.4 368 42 74.3 137 33 2.04 1.4 0.28 12 16 0.001 <0.001 <0.0001 0.002 <0.05 <0.0001 0.071 0.001 31

24-Nov-11 Event Low Flow 7.4 554 -- 18.3 370 20 25.5 121 2 1.63 1.7 0.18 12 14 0.002 0.002 <0.0001 <0.001 <0.05 <0.0001 0.12 <0.001 8330-Dec-11 Routine Low Flow 7.24 430 -- 20.4 222 9 5.3 8 97 0.63 0.8 0.05 12 13 <0.001 <0.001 <0.0001 <0.001 <0.05 <0.0001 0.096 <0.001 8326-Jan-12 Event Mod Flow 7.14 698 -- 20.8 442 7 6.2 112 9 0.99 1.3 0.09 14 12 0.001 0.002 <0.0001 <0.001 <0.05 <0.0001 0.166 <0.001 9229-Mar-12 Routine Low Flow 7.12 477 -- 25.7 260 6 27.2 75 14 1.12 0.7 0.08 16 15 <0.001 <0.001 <0.0001 <0.001 <0.05 <0.0001 0.256 <0.001 8829-Mar-12 Routine Low Flow 7.5 570 -- 18.1 304 <5 12.6 109 22 0.58 0.8 0.42 15 15 <0.001 <0.001 <0.0001 <0.001 <0.05 <0.0001 0.234 <0.0001 9330-Apr-12 routine Low Flow 7.38 793 -- 15.4 366 5 5.3 168 17 0.43 0.6 0.06 16 18 <0.001 <0.001 <0.0001 <0.001 <0.05 <0.0001 0.141 <0.001 10231-May-12 Routine Low Flow 7.2 750 -- 12.8 426 <5 4.6 175 70 0.23 0.3 0.02 16 20 <0.001 <0.001 <0.0001 <0.001 <0.05 <0.0001 0.094 <0.001 4929-Jun-12 Routine Low Flow 7.3 432 -- -- 374 <5 6.2 96 28 0.52 0.6 0.04 10 10 <0.001 0.002 <0.0001 <0.001 <0.05 <0.0001 0.057 <0.001 61

W5


21-Jul-11 Event Mod Flow 7.1 504 12.3 268 21 60.4 76 74 1.42 0.5 0.07 11 15 0.001 <0.001 <0.0001 <0.001 <0.05 <0.0001 0.018 <0.001 4321-Aug-11 Event od-Low Flo 6.8 487 11.9 334 32 88.9 72 74 1.78 0.8 0.17 11 15 0.001 <0.001 <0.0001 0.001 <0.05 <0.0001 0.033 0.002 4130-Sep-11 Routine Low Flow 7.9 758 20.9 450 <5 6.48 169 54 0.60 0.9 0.05 15 23 0.001 <0.001 0.0001 <0.001 <0.05 <0.0001 0.022 <0.001 933-Oct-11 Event Mod Flow 6.5 402 15.1 298 33 77.9 95 29 2.01 0.7 0.07 8 12 0.002 <0.001 <0.0001 0.001 <0.05 <0.0001 0.026 0.001 2824-Nov-11 Event Low Flow 7.5 458 18.2 372 26 79.5 80 22 2.09 1.7 0.09 7 12 0.003 <0.001 <0.0001 0.001 <0.05 <0.0001 0.059 0.002 7412-Dec-11 Event High Flow 7.0 154 -- -- 58 88.8 25 8 1.39 -- -- -- -- -- -- -- -- -- -- -- -- --30-Dec-11 Routine Low Flow 7.5 459 20 220 <5 10.24 118 <1 0.80 0.7 0.02 12 16 <0.001 0.001 <0.0001 <0.001 <0.05 <0.0001 0.061 <0.001 9725-Jan-12 Downstream Low Flow 7.7 643 22.6 434 72 106.9 138 18 1.33 0.8 0.03 17 24 <0.001 <0.001 <0.0001 <0.001 <0.05 <0.0001 0.026 <0.001 11026-Jan-12 Event Low Flow 7.3 501 20.6 330 25 41.9 99 30 0.96 1 0.1 12 16 0.004 <0.001 <0.0001 <0.001 <0.05 <0.0001 0.022 <0.001 7629-Feb-12 Routine Low Flow 7.6 622 25.7 366 <5 11.5 84 49 1.04 0.6 0.03 20 24 0.001 <0.001 <0.0001 <0.001 <0.05 <0.0001 0.064 <0.001 12429-Mar-12 Routine Low Flow 7.5 765 18.2 434 8 18.3 142 53 0.62 0.6 0.04 17 23 <0.001 <0.001 <0.000 <0.001 <0.05 <0.001 0.037 <0.001 13030-Apr-12 routine Low Flow 8.0 931 17.4 454 <5 6.53 189 45 0.34 0.6 0.03 17 24 <0.001 <0.001 <0.0001 <0.001 <0.05 <0.0001 0.017 <0.001 10831-May-12 Routine Low Flow 8.1 708 16 404 <5 4.9 160 67 0.29 0.3 0.01 14 20 <0.001 <0.001 <0.0001 <0.001 <0.05 <0.0001 0.019 <0.001 4929-Jun-12 Routine Low Flow 7.3 407 13.2 232 6 6.61 81 41 0.37 0.4 0.1 7 10 0.001 0.003 <0.0001 <0.001 <0.05 <0.0001 0.019 <0.001 29

W6


21-Jul-11 Event low flow 7.0 256 13 165 7 29 42 20 0.75 0.7 0.06 4 6 0.001 <0.001 0.0002 <0.001 <0.05 <0.0001 0.009 <0.001 2821-Aug-11 Event Mod-Low Flo 6.8 500 12.3 266 <5 14 116 25 0.47 0.9 0.24 8 12 <0.001 <0.001 <0.0001 <0.001 <0.05 <0.0001 0.018 <0.001 4030-Sep-11 Routine Trickle 6.9 712 16.5 418 <5 7 189 29 0.52 0.7 0.01 13 21 <0.001 <0.001 <0.0001 0.002 <0.05 <0.0001 0.015 <0.001 693-Oct-11 Event low flow 6.4 314 16.2 196 8 26 41 11 0.88 0.8 0.08 3 4 0.002 <0.001 <0.0001 <0.001 <0.05 <0.0001 0.014 <0.001 21

24-Nov-11 Event low flow 7.3 622 17.7 370 <5 9 150 8 0.92 1.7 0.04 7 14 0.001 <0.001 0.0002 <0.001 <0.05 <0.0001 0.026 <0.001 5812-Dec-11 Routine Mod Flow 7.2 249 -- -- 10 30 48 6 0.79 -- -- -- -- -- -- -- -- -- -- -- -- --30-Dec-11 Routine Low Flow 6.9 362 18.4 178 <5 7 79 4 1.18 0.6 0.03 7 10 <0.001 0.001 <0.0001 <0.001 <0.05 <0.0001 0.022 <0.001 6225-Jan-11 Upstream low Flow 7.0 790 22.3 402 8 19 160 6 0.67 0.8 <0.01 8 14 <0.001 <0.001 <0.0001 <0.001 <0.05 <0.0001 0.025 <0.001 5026-Jan-12 Event Low Flow 6.8 430 21 264 9 11 104 13 0.96 0.8 0.03 7 10 <0.001 <0.001 <0.0001 <0.001 <0.05 <0.0001 0.018 <0.001 4529-Feb-12 routine low flow 6.6 651 25.7 440 18 38 171 <1 5.6 1.6 0.26 18 24 0.002 0.002 <0.0001 <0.001 <0.05 <0.0001 2.31 <0.001 5729-Mar-12 Routine No Flow30-Apr-12 routine low flow 6.7 1997 17 1070 6 5 383 13 0.42 0.7 0.02 20 27 0.001 <0.001 <0.0001 <0.001 <0.05 <0.0001 1.15 <0.001 131-May-12 Routine Low Flow 6.7 661 11.7 410 25 40 206 8 2.5 0.8 0.17 10 14 0.001 <0.001 <0.0001 <0.001 <0.05 <0.0001 0.131 <0.001 2029-Jun-12 Routine Low Flow 6.5 578 12.6 352 6 16 177 6 1.64 0.7 0.09 9 12 0.002 0.002 0.0003 <0.001 <0.05 <0.0001 0.075 <0.001 32

W8


21-Jul-11 Event Low Flow 7.1 683 12.3 352 10 18.7 117 96 0.76 0.6 0.06 14 20 0.001 <0.001 0.0002 <0.001 <0.05 <0.0001 0.013 <0.001 6121-Aug-11 Event Low Flow 7.1 725 13.4 426 <5 16.5 108 117 0.6 0.5 0.02 16 23 <0.001 <0.001 <0.0001 <0.001 <0.05 <0.0001 0.032 <0.001 7230-Sep-11 Routine Low Flow 7.5 774 18.1 430 <5 0.91 160 22 0.24 0.7 <0.01 15 24 <0.001 <0.001 <0.0001 0.001 <0.05 <0.0001 0.028 <0.001 1103-Oct-11 Event Low Flow 6.9 386 14.4 280 8 42.4 78 29 1.59 1.3 0.14 8 10 0.002 <0.001 0.0002 0.002 <0.05 <0.0001 0.024 <0.001 3024-Nov-11 Event Low Flow 7.5 680 18.5 420 12 20.4 116 35 1.52 1.5 0.07 11 20 0.001 0.001 <0.0001 <0.001 <0.05 <0.0001 0.082 <0.001 12130-Dec-11 Routine Low Flow 7.2 469 20.4 246 <5 0.55 84 <1 0.39 0.7 0.04 12 17 <0.001 <0.001 <0.0001 <0.001 <0.05 <0.0001 0.068 <0.001 10426-Jan-12 Event Low Flow 7.1 636 20.9 426 <5 5.32 124 52 0.81 0.8 0.03 16 20 <0.001 <0.001 <0.0001 <0.001 <0.05 <0.0001 0.043 <0.001 8529-Feb-12 Routine Low Flow 7.1 660 26.7 368 9 6 89 44 4.71 0.8 0.2 22 26 <0.001 <0.001 <0.0001 <0.001 <0.05 <0.0001 1.18 <0.001 14129-Mar-12 Routine Low Flow 7.4 815 19.7 448 <5 14 150 54 0.3 0.6 0.1 19 26 <0.001 <0.001 <0.0001 <0.001 <0.05 <0.0001 0.067 <0.001 14130-Apr-12 Routine Low Flow 7.1 1018 17.2 488 5 1.21 120 38 0.18 0.5 0.03 11 16 0.001 <0.001 <0.0001 <0.001 <0.05 <0.0001 0.031 <0.001 9431-May-12 Routine Low Flow 7.4 706 13.9 354 <5 1.55 156 78 0.09 0.3 0.02 14 20 0.022 <0.001 0.0001 <0.001 <0.05 <0.0001 0.011 0.003 5329-Jun-12 Routine Low Flow 7.2 614 13.3 314 <5 3.31 126 61 0.2 0.5 0.03 10 14 0.004 0.002 0.0009 <0.001 <0.05 <0.0001 0.009 <0.001 48

W9

DATE Event Flow pH Cond. Temp TDS TSS Turbidity Chloride Sulphate Iron (filt.) Tot. N Tot. P Calcium Mg Copper Arsenic Cd Cr Boron Mercury Mn Lead Alkalinity (uS/cm) °C (mg/L) (mg/L) (NTU) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L)

21-Jul-11 Event Low Flow 6.9 103 14.2 156 58 155 17 3 3.47 0.8 0.11 2 2 0.004 <0.001 <0.0001 0.003 <0.05 <0.0001 0.056 0.002 1021-Aug-11 Event Mod flow 6.6 145 13.1 168 18 69.3 29 <1 2.2 0.6 0.12 4 3 0.002 <0.001 <0.0001 0.002 <0.05 <0.0001 0.088 <0.001 1330-Sep-11 Routine Trickle Flow 6.6 1371 22.1 844 14 19.6 449 22 3.26 0.6 <0.01 28 30 0.002 <0.001 <0.0001 0.002 <0.05 <0.0001 3.53 <0.001 1803-Oct-11 Event Low Flow 6 121 16.8 177 19 85.8 20 <1 2.6 1.1 0.22 2 2 0.003 <0.001 <0.0001 0.003 <0.05 <0.0001 0.044 0.001 824-Nov-11 Event Low Flow 5.88 891 17.2 568 11 21.4 266 14 2.51 1.2 0.11 22 20 0.002 <0.001 <0.0001 0.001 <0.05 <0.0001 0.227 <0.001 630-Dec-11 Routine Low Flow 6.71 231 17.1 94 76 102 22 <1 4.54 0.9 0.1 6 5 0.002 <0.001 <0.0001 0.002 <0.05 <0.0001 0.521 0.002 7626-Jan-12 Event Low Flow 7.07 87 20.8 188 23 64.8 12 <1 1.67 0.7 0.02 2 2 0.002 <0.001 <0.0001 0.002 <0.05 <0.0001 0.021 <0.001 1029-Feb-12 Routine No Flow29-Mar-12 Routine No Flow30-Apr-12 Routine Trickle Flow 5.75 395 16.6 200 8 22.7 102 5 0.38 0.2 0.04 9 7 0.001 <0.001 0.0001 <0.001 <0.05 <0.0001 0.089 <0.001 531-May-12 Routine Low Flow 6.86 223 11.1 209 62 90.9 54 6 3.1 0.9 0.12 4 4 0.002 <0.001 <0.0001 0.003 <0.05 <0.0001 0.212 0.001 1029-Jun-12 Routine Low Flow 6.28 213 13.8 206 32 28.6 66 3 1.56 0.8 0.09 5 4 0.002 0.002 <0.0001 0.001 <0.05 <0.0001 0.119 <0.001 12

W10

DATE Event Flow pH Cond. Temp TDS TSS Turbidity Chloride Sulphate Iron (filt.) Tot. N Tot. P Calcium Mg Copper Arsenic Cd Cr Boron Mercury Mn Lead Alkalinity (uS/cm) °C (mg/L) (mg/L) (NTU) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L)

21-Jul-11 Event Low Flow 7.1 172 12.6 150 30 74.4 27 15 1.52 0.8 0.08 4 3 0.002 <0.001 <0.0001 <0.001 <0.05 <0.0001 0.025 0.001 2021-Aug-11 Event Low Flow 7.1 280 12.6 236 26 93.8 40 29 1.9 0.5 0.08 8 7 0.002 0.001 <0.0001 0.001 <0.05 <0.0001 0.031 0.002 3830-Sep-11 Routine Trickle Flow 7.7 1258 16.5 732 <5 2.79 327 46 0.23 0.2 <0.01 46 32 0.002 <0.001 <0.0001 0.002 <0.05 <0.0001 0.028 <0.001 10003-Oct-11 Event Low Flow 7 344 14.2 266 6 71.2 66 27 1.86 0.7 0.04 11 8 <0.001 0.001 <0.0001 <0.001 <0.05 <0.0001 0.022 0.002 4424-Nov-11 Event Low Flow 7.55 293 18.1 272 28 107.5 47 26 2.51 1.6 0.1 8 6 0.002 <0.001 <0.0001 0.002 <0.05 <0.0001 0.044 0.002 3830-Dec-11 Routine Low Flow 7.68 547 19.4 282 8 13.8 115 18 1.05 0.3 0.02 20 12 <0.001 <0.001 <0.0001 <0.001 <0.05 <0.0001 0.018 <0.001 7926-Jan-12 Event Low Flow 7.19 220 20.4 267 30 88.7 39 15 1.42 0.5 0.02 7 4 0.001 <0.001 <0.0001 <0.001 <0.05 <0.0001 0.018 <0.001 2929-Feb-12 Routine Low Flow 7.83 592 26.1 334 <5 9.39 125 17 0.78 0.4 <0.01 24 14 <0.001 <0.001 <0.0001 <0.001 <0.05 <0.0001 0.037 <0.001 7929-Mar-12 Routine Trickle Flow 7.7 595 18.2 338 <5 11.8 128 18 0.9 0.3 0.1 21 13 <0.001 <0.001 <0.0001 <0.001 <0.05 <0.0001 0.016 <0.001 8230-Apr-12 Routine Low Flow 7.76 1147 16.6 566 <5 3.68 194 21 0.44 0.3 0.03 31 19 <0.001 <0.001 <0.0001 <0.001 <0.05 <0.0001 0.016 <0.001 12531-May-12 Routine No Flow29-Jun-12 Routine Low Flow 7.69 908 13 674 <5 7.85 248 48 0.44 0.2 <0.01 31 20 0.001 0.003 <0.0001 <0.001 <0.05 <0.0001 0.012 <0.001 82

Figure 5-1: Surface Water Monitoring Results - pH

Figure 5-2: Surface Water Monitoring Results - Electrical Conductivity

Figure 5-3: Surface Water Monitoring Results - Total Suspended Solids

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Figure 5-4: Surface Water Monitoring Results - Turbidity

Figure 5-5: Surface Water Monitoring Results - Iron

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Stratford Surface Water Monitoring - IronJuly 2011 to June 2012

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Biological Monitoring

Of the Stratford Mining Complex

Study 3, Survey 9, October 2011.

INVERTEBRATE IDENTIFICATION AUSTRALASIA

51 Panorama Parade, Panania, NSW 2213, Phone (02) 6771 1458

Email: [email protected] or [email protected]

mailto:[email protected]�

mailto:[email protected]�

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Table of Contents

Executive Summary ....................................................................................................... 3

Introduction .................................................................................................................... 4

Study area and sampling sites ........................................................................................ 4

Methodology .................................................................................................................. 8

Macroinvertebrate Sampling ...................................................................................... 8

Comparative Indices ................................................................................................ 10

Silt Tolerant Species ................................................................................................ 10

Physico-Chemical Data ............................................................................................ 10

Results .......................................................................................................................... 10

Environmental Physico-chemical Conditions .............................................................. 10

Ecological Response - Macroinvertebrate Data ........................................................... 17

Discussion .................................................................................................................... 22

Acknowledgements ...................................................................................................... 23

References .................................................................................................................... 23

Cover Page Image. Vegetated pool at Site S3.

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Executive Summary This is the ninth report commissioned by Stratford Coal Pty Ltd as part of the environmental monitoring program for the Stratford Mining Complex. This report provides the environmental assessment of the status of the aquatic ecosystems of Dog Trap Creek, Avondale Creek and the Avon River above and below mining operations over the period October 2010 to October 2011. Six sites were sampled on the 17th of October 2011 for aquatic macroinvertebrates and water quality using rapid assessment techniques. Two sites are on the Avon River, one above (Site W1) and one below (Site W2) the confluence of the Avon River and Avondale Creek. Two sites are on Avondale Creek, SiteW8 at Bowens Road is directly downstream of the Stratford Coal Handling and Preparation Plant and Site W5 at Wenhams Cox Road further downstream at the freehold property boundary, while Site W3 on Dog Trap Creek is the control site. In addition, one site monitors a dam discharge gully approximately 800 m below the discharge point of the northern arm of the eastern clean water division drain, which feeds into Avondale Creek. A total of 59 genera representing 44 families were observed. Six biological indices are used to determine the condition of the streams in and adjacent to the project area. Since the last survey in October 2010 (Study 3, Survey 8), there has been an increase in annual and average rainfall that has led to consistent moderate to occasional high flow conditions with one period of no flow in tributary streams during January and February, 2011. There were 15 rainfall events over 20 mm, which represents an increase on last year’s 13 events and six events over 40 mm which is a significant increase on last year’s two events that contributed to sustaining the stream flow and therefore, ecosystem health. Prior to the current survey there had been moderate rainfall that contributed to the Avon River sites still experiencing a moderate flow while the Avondale and Dog Trap Creeks had drained of this event and were again experiencing low flow conditions. The results of the current survey indicate that the overall aquatic biodiversity across all the sites are higher or equivalent to those of the previous survey. The environmental condition assessment has shown an increase in condition for the Avon River and the Avondale Creek sites. These changes in ecosystem condition/health appear to be the direct result of continued moderate flow conditions in the Avon River and in the other creeks.

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Introduction Stratford Coal Pty Ltd operates an open cut coal mine complex situated approximately 1.5 km SE. of Stratford and 17 km S. of Gloucester on the lower North coast of NSW. It has been in operation for the past 17 years. As part of the Stratford Mining Complex’s environmental monitoring program, Invertebrate Identification Australasia was commissioned to continue the biological monitoring of the streams in the area of the mine. This report presents the results of the ninth survey of the environmental monitoring program. The study examines the environmental condition of the aquatic ecosystems of the Avon River, Avondale Creek and Dog Trap Creek following a year of continued moderate flow conditions. The rivers are assessed using a combination of environmental indices including aquatic macroinvertebrate diversity and water quality parameters. These have been demonstrated by over forty years of research to be ideally suited for the assessment of riverine ecosystem health. The composition of the aquatic macroinvertebrate community reliably reflects both natural and threatening processes (i.e. changes in the physico-chemical environmental parameters) operating within a catchment. They are the major contributors to the processing of energy through a catchment and are intrinsically linked to the water source. Their ubiquitous distribution and specific habitat requirements at the species and community level enables the use of their biodiversity as an indicator of ecological disturbance within the catchment.

Study area and sampling sites Avondale Creek flows for 11 km to its junction with Dog Trap Creek, which then flows approximately 900 m to the junction with the Avon River. The six sample locations are listed in Table 1 and shown in Figure 1.

Site code Site name and description Grid Reference

S3 Dam discharge gully approximately 800m below discharge point. 32°07'40"S 151°58'46"E

W1 Avon River at Wenhams Cox Road. 32°06'23"S 151°56'44"E

W2 Avon River downstream of Site W1. 32°05'17"S 151°57'38"E

W3 Dog Trap Creek near end of Wenhams Cox Road (prior to diversion of Bowens Road), a reference stream with its catchment used for grazing and forestry, with no mining.

32°06'32"S 151°58'30"E

W5 Avondale Creek at Wenhams Cox Road, downstream of the project area, at the freehold property boundary. 32°06'33"S 151°57'40"E

W8 Avondale Creek at Bowens Road, directly downstream of coal processing operations. 32°07'29"S 151°57'45"E

Table 1. Sampling sites. Avondale Creek – Sites S3, W5 and W8 Avondale Creek is a small meandering stream that passes through a mixture of heavily wooded native forest in the surrounding escarpment and cleared, grazing country in the lower sections (See Images 1-6). Water quality varies substantially along the stream’s gradient, with the upper escarpment sections having the best water quality. The lower sections of the stream, particularly in the area of Site W5 at Wenhams Cox Road, have very high natural salinity levels as a result of saline groundwater discharges. The salinity levels are inversely proportional to stream flow levels. The riverbed is characterised by a hard clay or bedrock

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base overlain by fine gravels, sand in the pools of the upper section of the stream through the mine operational area, to fine silts and clay with patches of gravel in the freehold property downstream of the mining area. Site W8 was also sampled. The site has been moved approximately 50 m downstream from the original site several months prior to the 2010 survey due to the construction of a haulage road where the original road had been (see images 3-4).The steam now runs through two large pipes under the road. It is typically an ephemeral reach at this site and is often completely dry, although it was flowing at the time of this survey with clear water, little algae and an extensive macrophyte community. Site S3 is located in the discharge gully of the northern arm of the eastern clean water diversion drain, approximately 800 m below the discharge point and feeds into Avondale Creek. The site is characterised by a dense native riparian zone, undisturbed stream banks, some macrophytes, substrate consisting of gravel and sand on a hard clay base and a small number of permanent pools that are groundwater fed. This section of the stream generally has elevated saline levels due to the groundwater discharge. This is a relatively undisturbed environment. At the time of the current survey Avondale Creek at both sites was experiencing low flow although it was clearly evident that there had been a recent flood event at Site S3. There was no sign of any erosion at either site with the banks retaining a comprehensive cover of native vegetation at Site S3 and introduced grasses at Site W5. Water turbidity was low with clear water and little algal development. Both sites had substantial macrophyte communities consisting mainly of Cumbungi.

1. 2. Site W5 viewed upstream (1); viewed downstream (2), taken October, 2011.

3. 4. Site W8 viewed upstream (3); viewed downstream (4), taken October, 2011.

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5. 6. Site S3 viewed upstream (5), viewed downstream (6), taken October, 2011.

Figure 1. Showing the location of Sites S3, W1-W3, W5 and W8.

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The Avon River – Site W1 and W2 The Avon River is a slow flowing river that flows along the western side of the project area (See Images 7-10). The riverbanks have a narrow riparian zone consisting of a mixture of native and introduced tree and shrub species. The surrounding catchment has largely been cleared, with cattle grazing being the main agricultural activity. The riffle zone of the riverbed is characterised by course gravel and cobble riffles on a hard clay base. The pool substrate is fine sand to silt. Water quality is moderate to high with moderate turbidity and nutrient levels. The current round of sampling at both Sites W1 and W2 had moderate levels of turbidity with no algae observed. Both sites were sampled for water quality and macroinvertebrates. During this survey both sites had moderate flow conditions. Significant macrophyte communities are established at least within Site W1 as well as significant root mats along the edges of pools from the riparian vegetation.

7. 8. Site W1, viewed upstream (7), viewed downstream (8), taken October, 2011.


Dog Trap Creek – Site W3 Dog Trap Creek (Site W3) drains the forested escarpment area northeast of the project area and flows westward. During normal flow conditions the stream is slow flowing with a course sand and gravel substrate on a clay base. The downstream area is heavily impacted by cattle grazing and has a minimal riparian zone consisting mainly of Eucalyptus and Casuarina species. The stream banks and bed are impacted by cattle activity, with areas of bank erosion. During this survey the stream had a low flow with low turbidity water and no algae within the pools signifying moderate to low levels of nutrients within the water. The stream substrate was covered with a thin layer (0.5 mm) of fine silt. Dog Trap Creek was sampled for water quality and macroinvertebrates.

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Methodology Macroinvertebrate Sampling Each site was sampled using two standardized methods outlined in the River Bioassessment Manual (Anonymous, 1994) and the NSW AUSRIVAS (Australian River Assessment System) sampling and processing manual (Turak et al., 2004). For a more detailed outline of the methods used see Survey 5, 2007. In addition to the method previously described, edges (pools) and riffles were sampled separately and live picked in the field as described below. Live picking in the field Once the sample has been collected, it is placed in a large white tray. Live sorting in the field is conducted according to the following rules:

• Collect approximately 200 invertebrates (plus or minus 40) in 30 minutes, • If new taxa are found in the last five minutes of the 30 minute sorting period, continue sorting

for an additional 10 minutes beyond the original 30 minutes, focusing on the search for new taxa. If new taxa are found in this time then sorting continues for an additional 10 minutes. This can continue for up to a maximum of 60 minutes.

• If the sample has a particularly low abundance of invertebrates (for example fewer than 100 invertebrates have been found in 30 minutes), continue sorting for an additional 10 minutes. If no new taxa are found in the extra 10 minutes, cease sorting. If new taxa are found, continue as previously described for up to a maximum of 60 minutes.

• Once the live pick has been completed, the sample is labeled, preserved and returned to the lab for further sorting and identification.

• The remaining material is also packaged, labeled, preserved and returned to the lab for further sorting and identification in order to give a more comprehensive assessment of overall biodiversity. All samples are preserved in the field with 100% ethanol and returned to the laboratory for sorting and identification. Physico-Chemical Data Physical and chemical parameters were measured at each site in situ and included temperature, dissolved oxygen, conductivity and pH using a calibrated water quality multimeter. Water samples were collected in the field at the time of the macroinvertebrate surveys using the method below and analysed by a NATA accredited Laboratory Nutrients: Water samples were collected for laboratory analysis of total phosphorus (TP), nitrates and nitrites (NO2), alkalinity and turbidity. The protocols described below are followed during their collection and storage:

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• Collection of water samples for water chemistry is conducted before the site is disturbed by other sampling activities.

• Collect the sample in an area of flow and upstream of the macroinvertebrate sample collector’s position in the stream.

• For nutrient samples only, the bottles and caps are rinsed with stream water two to three times before filling them. Identification Specimens were identified to genus where possible, (except for Chironomidae, Oligochaeta and Platyhelminthes which are identified to family/subfamily), using a combination of current taxonomic works and keys and comparison with voucher specimens in the reference collections of Invertebrate Identification. Identification references included Williams (1981) and the taxonomic identification series produced by the Murray Darling Freshwater Research Centre.

Data Analysis Measured Indices AUSRIVAS. The Australian Rivers Assessment System, or AUSRIVAS, is a predictive modeling tool for assessing river ecosystem health (Davies 2000, Simpson & Norris 2000). Using a suite of mathematical models, AUSRIVAS predicts the invertebrates that should be present in specific stream habitats under reference conditions. It does this by comparing a test site with a group of reference sites which are as free as possible of environmental impacts, and have similar physical and chemical characteristics to those found at the test site. Sometimes the AUSRIVAS models do not produce an O/E score for a given site and instead describe the site as being ‘outside the experience of the model’. This indicates that one or a combination of the environmental predictor variables places the test site beyond the scope of that encompassed by the reference sites used to build the model. In these cases, no assessment can be made using the AUSRIVAS index and assessments must be based on the other indices (RBA, 2003). See Table 2 for a breakdown of the AUSRIVAS index values and water quality status.

Band Label Band Name Comments

X Richer than reference

More families found than expected; potential biodiversity ‘hot spot’ or possible mild organic enrichment.

A Reference Score is within range of the central 80% of reference sites.

B Below reference Fewer families than expected; loss of families due to mild impact on water and/or habitat quality.

C Well below reference

Many fewer families than expected; loss of families due to moderate to severe impact on water and/or habitat quality.

D Impoverished Very few families collected; highly degraded site; very poor water and/or habitat quality.

Table 2. AUSRIVAS Index band categories. SIGNAL. SIGNAL is an acronym for ‘Stream Invertebrate Grade Number - Average Level’, and is a biotic index of pollution tolerance or sensitivity of stream invertebrates and was originally developed for use in the lower Blue Mountains (Chessman, 1995). Chessman et al., (1997) released a modified version; SIGNAL-HU97B, developed for the Hunter Valley, which is to the south, and its aquatic communities are more comparable to those found within the study area. See Table 3 for a breakdown of the SIGNAL-HU97B values and water quality status.

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SIGNAL-HU97B Water Quality Status >7 Excellent 6-7 Good 5-6 Fair 4-5 Poor <4 Very poor

Table 3. SIGNAL Index band categories (Chessman et al., 1997). EPT Richness. The EPT (Ephemeroptera, Plecoptera and Trichoptera) score is based on the observation that the majority of these taxa are particularly pollution sensitive (Lenat, 1988, see Table 4). For further details see Study 3 Survey 5, October, 2007.

EPT genus richness Water Quality Status >6 Healthy 5-6 Slightly impaired 3-4 Moderately impaired 1-2 Severely impaired 0 Grossly impaired

Table 4. EPT Index band categories (Besley et al., 1996; Besley & Growns, 1998). Comparative Indices Number of Families. All macroinvertebrate families are separated and counted. The number of families present generally decreases with decreasing water quality and is used as a comparative measure of community change over time. Functional Feeding Groups. Ratio of shredder taxa to total number of taxa. As with Numbers of Families the higher the ratio of shredders the better the water quality and is used as a comparative measure of community change over time. Silt Tolerant Species The aquatic fauna assemblages need to be assessed for silt tolerant fauna, as the presence of such fauna can provide an indication of the degree of heavy sediment pollution. The main indicator families are the Dugesiidae, Lymnaeidae, Ancylidae, Physidae, Planorbidae, Psephenidae, Chironomidae, Caenidae, Pyralidae and Ecnomidae. The silt tolerant taxa values are best examined against the total number of taxa sampled from each site i.e. the silt tolerant ratio, as the variation of values is significantly reduced compared with examining the number of taxa alone. This index is used as a comparative measure of community changes over time. Physico-Chemical Data Physical and chemical parameters were measured at each site in situ and included temperature, dissolved oxygen, electrical conductivity and pH (Table 5). Rainfall and water chemistry data is supplied by Stratford Coal Pty Ltd from data from their regular water quality monitoring program.

Results Environmental Physico-chemical Conditions

All physico-chemical parameters were remarkably consistent over the length of the study area (Table 5) and were comparable with previous surveys. The river sites were well above the minimum requirements as set out by the ANZECC and ARMCANZ guidelines (2000). At the time of sampling the Avon River was flowing well over the causeway at Site W1 and approximately 30 cm over the causeway at Site W2 and running at all other sites.

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Survey 9 Units S3 W1 W2 W3 W5 W8

Temperature °C C 15.3 16.3 17.3 17.1 18.9 17.2 Conductivity Data mg/l 963 188 228 429 670 666

pH Units pH Units 6.6 7.5 7.7 7.6 7.0 7.3 Dissolved Oxygen mS 1.7 3.2 2.9 2.7 4.1 3.8

Table 5. Physico-chemical data from each site collected on 17th October 2011. Over the last twelve months there have been 15 rainfall events over 20 mm, which represents an increase on last year’s 13 events and six events over 40 mm which is a significant increase on last year’s two events. The highest rainfall event occurred over two consecutive days on the 15-16th June 2011 which recorded 86.4 mm and 87.4 mm respectively. The most recent event prior to the latest survey was 31.8 mm falling on the 3th of October 2011 (Figures 2-3). Coincidentally this event was almost the exact volume and date to the corresponding event to last year’s survey. The annual rainfall figures increased substantially over the last twelve months (September 2010 to August 2011) from 820.2 mm in 2009-2010 to 1255.4 mm in 2010-2011.

Figure 2. Daily rainfall values for Stratford from October 2010 to October 2011. The relatively consistent rainfall over the year combined with several large flooding events resulted in a lowering of the salinity levels (Figures 4-5.) in the riverine sites including the smaller tributary Site S3. As usual Sites S3 and W5 recorded the highest values with 963 and 670 mg/l, respectively. However, they were substantially lower than last year. This is approximately 25% of the salt load for Site S3 and 80% of the load for Site W5 compared with last year’s survey. The river sites (Sites W1, W2 and W3) recorded consistently low values ranging from of 188, 228 and 429 mg/l, respectively. Figure 4 illustrates the annual changes in conductivity recorded as part of the Stratford Coal’s monthly monitoring program for all sites (except Site S3). This figure illustrates that the salinity was low and consistent over the period and between the river sites. Sites W3, W5 and W8 had a dry period (shown as blank spaces) in February 2011, while Sites W5 and W8 were also dry during January 2011. All observations were comparable and consistent with the values recorded for this and previous surveys. The Avon River sites, Sites W1 and W2 were almost identical during this period demonstrating there were no differences in salt loads above and below the influence of the mining operations.

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Figure 3. Monthly rainfall values for Stratford from 2003 to October 2011. During the current round of sampling the water temperatures (Figure 6) were higher than the previous survey across all sites due to the prevailing weather pattern and comparable with the 2004-2007 and 2010 results. The values are also still relatively consistent throughout the system. Site W5 recording the highest overall value of 18.9 and Site W2 recorded the highest river site temperature of 17.3°C, while Site S3 recorded the lowest value of 15.3°C.

Figure 4. Fluctuations in conductivity of the Avon River, Avondale Creek and Dog Trap Creek from 2001- 2011.

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Figure 5. Fluctuations in conductivity of the Avon River, Avondale Creek and Dog Trap Creek during 2010-2011.

Figure 6. Fluctuations in water temperature of the Avon River, Avondale Creek and Dog Trap Creek from 2001- 2011. The pH (Figure 7) has remained very consistent over the last four years. There has been very little fluctuation of pH throughout the system over time and it is therefore not considered to have any major impact on stream biodiversity. The highest value of 7.7 was recorded at Site W2 and the lowest value of 6.6 was recorded at Site S3 as in previous surveys.

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Figure 7. Fluctuations in pH of the Avon River, Avondale Creek and Dog Trap Creek from 2001- 2011. Figure 8 illustrates the annual changes in pH recorded by the Stratford Mine’s monthly monitoring program, for all sites, except Site S3. The values at all sites recorded were comparable and consistent with the value recorded during the previous survey.

Figure 8. Fluctuations in pH of the Avon River, Avondale Creek and Dog Trap Creek from 2010- 2011.

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Dissolved oxygen recorded comparable values and variability across sites relative to last year’s survey due to a combination of similar higher flows and site specific levels of solar exposure (Figure 9). Site S3 recorded the lowest overall reading of 1.7 and Site W2 recorded the lowest value for the river sites of 2.9; while the highest observed value was 4.1 for Site W5. The higher DO reading at Site W5 is due to the increased solar exposure that has encouraged algal activity during the day. The lower DO reading recorded at Site S3 is consistent with a reduction in flow and solar radiation due to the often dense riparian zone of vegetation, which would therefore reduce the production and activity of algae.

Figure 9. Fluctuations in Dissolved Oxygen of the Avon River, Avondale Creek and Dog Trap Creek from 2001- 2011. Alkalinity is the water's capacity to resist changes in pH that would make the water more acidic. This capacity is commonly known as “buffering capacity” and partly explains the consistent pH values recorded. Alkalinity of natural water is determined by the soil and bedrock through which it passes. In streams, the fluctuations are related to the relative proportions of surface water and rainfall mixing where the alkalinity levels show an inverse relationship to river flow or rainfall events. Therefore, the fluctuations illustrated in Figure 10 show alkalinity increasing during periods of low flows and decreasing during periods of higher rainfall. The consistent pH levels evident in previous graphs demonstrate that alkalinity levels have been sufficient to buffer the rivers from any significant changes across the sites. The total nitrogen values (Figure 11) were low and consistent across the Avon River sites during this survey, with the exception of Site W3 (Dog Trap Creek) which experienced three spikes in nitrogen levels to 6.8 and 6.7 mg/l in November and January, respectively and the largest spike in early October to 12.2mg/l. The river sites show little difference, recording a maximum of 2.4 and 1.5mg/l for W1 and W2, respectively on the 31st of May. The levels dropped as low as 0.1 and 0.4 mg/l for W1 and W2, respectively following the large rainfall in June.

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Figure 10. Fluctuations in alkalinity of the Avon River, Avondale Creek and Dog Trap Creek from 2010- 2011.

Figure 11. Fluctuations in total nitrogen of the Avon River, Avondale Creek and Dog Trap Creek from 2010- 2011. Turbidity levels (Figure 12) recorded a direct relationship between high flows with high turbidity such as in November, March and June. Site W8 recorded the lowest overall reading of 0.91 NTU and consistently recorded the lowest values through the year. Sites W1 and W2 recorded the highest values of 267 and 233 NTU respectively. Of the two river sites, SiteW2 consistently recorded the lower values over the last twelve months.

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Figure 12. Fluctuations in turbidity of the Avon River, Avondale Creek and Dog Trap Creek from 2010- 2011.

Ecological Response - Macroinvertebrate Data A total of 59 genera representing 44 families were recorded from the six sites. The results of the survey and the indices values are summarised in Tables 6 and 7.

Survey 9 S3 W1 W2 W3 W5 W8 Totals AUSRIVAS B A A B B B

SIGNAL - HU97B 4.1 5.3 5.2 4.4 4.0 4.7 No of Genera 26 34 35 26 18 33 59

No of Families 19 27 28 25 15 27 44 EPT 4 12 10 5 2 4 14 EPT ratio 0.21 0.44 0.36 0.20 0.13 0.15

Shredder Ratio 0.47 0.52 0.43 0.28 0.33 0.44 Silt Tolerant Taxa 4 3 5 5 3 6 7

Table 6. Macroinvertebrate indice results for Survey 9, October 2011.

Survey 9 S3 W1 W2 W3 W5 W8

AUSRIVAS Below reference Reference Reference Below

reference Below

reference Below reference

SIGNAL-HU97B Poor Fair Fair Poor Poor Poor

EPT Moderately impaired Healthy Healthy Slightly

impaired Severely impaired

Moderately impaired

Table 7. Macroinvertebrate indice ratings for Survey 9, October 2011. The aquatic macroinvertebrate taxa recorded are listed in Appendix 1 and represents a community consisting generally of species tolerant of moderate to high levels of disturbance. At all sites, the communities were dominated by predator feeding groups such as Coleoptera,

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Annual Turbidity 2010-2011

W1

W2

W3

W5

W8

18

Hemiptera and the detritivore feeding groups including an array of Chironomidae and Oligochaete and shredder/grazer guilds including the Ephemeroptera and Gastropoda. The reduction of Chironomidae in the soft sediments of the Avon River and Dog Trap Creek were particularly significant as they indicate that there has been sufficient flows for a substantial period to flush out some of the finer sediment and detrital matter. A notable reoccurrence within the fauna was the presence of Plecoptera (Stoneflies) at Site W1. This group of EPT taxa are particularly sensitive to habitat disturbance and are therefore regarded as indicators of good stream health. The species observed had been previously absent from all sites prior to the 2010 survey. The Mayfly family Leptophlebiidae (Ephemeroptera), which was absent from all sites in 2003 was observed at the two Avon River sites and Dog Trap Creek (Site W3) in the current survey. These groups are allocated the highest rating (10) in the SIGNAL index, as they are highly sensitive to pollution/disturbance. Therefore, the continued existence and substantial increase in numbers and coverage of these groups at these sites is indicative of a continued sustainability and increase in ecosystem condition. The biodiversity values (i.e. number of genera) are illustrated in Figure 13. The total numbers of genera and families have shown comparable values with the previous surveys since 2004 in the overall biodiversity for both Avon River sites and Avondale Creek. Site W5 recorded the lowest biodiversity value of 18 taxa, which is similar to values recorded in previous years for Sites W3 and W5, whilst Sites W2, W1 and W8 recorded the highest diversity with 35, 34, and 33 genera, respectively. These values represent overall values consistent with the previous six surveys. The results are also comparable or higher than the results recorded in December, 2001 prior to the drought period of 2002-2004.

Figure 13. Fluctuations in aquatic biodiversity (number of genera) in the Avon River, Avondale Creek and Dog Trap Creek from 2001. The AUSRIVAS values in general are reflected by the results of the other indices by indicating that the healthiest sites are the river sites, SitesW1 and W2 while the other sites are mildly impacted. This represented an increase in condition for Sites W1 and W3 from last year’s assessment. The value of using a number of indices is that it 1) confirms the results of

0 5

10 15 20 25 30 35 40 45

No

of G

ener

a

Date

Biodiversity

S3

W1

W2

W3

W5

W8

19

the others and 2) measures more accurately individual components of the streams conditions and therefore provides a better overall assessment of a site than from using just one index. The SIGNAL values for all sites, except for Sites S3 and W5, were slightly higher than those of the previous survey. (Figure 14, Tables 6-7). Site W5 recorded essentially the same value as last year and S3 was slightly lower. The two Avon River sites (Sites W1 and W2) recorded the highest values of 5.3 and 5.2, respectively, which is comparable with the 2001, 2002 and 2003 values and was the highest in ten years for both river sites. This indicates that, ecologically, the condition of the river has substantially improved over the last twenty four months. Sites S3 and W5 recorded the lowest values with 4.1 and 4.0, respectively. The SIGNAL values indicate that the river sites are in fair condition, while all other sites are still in a poor condition. This is an improvement for Site W3which has increased in health over the last year where it was considered to be in very poor condition.

Figure 14. Fluctuations in the SIGNAL Index of the Avon River, Avondale Creek and Dog Trap Creek from 2001. The EPT values (Figure 15) reflect both the biodiversity and SIGNAL indices by showing a significant increase in the number of EPT taxa recorded from the river sites (Sites W1 & W2) compared with the previous year’s survey. The results for the sites on Avondale Creek demonstrated identical values to the previous survey. The current results are, however, also comparable with results of the years 2002-2003 and 2007-2008 surveys. The river sites recorded the highest values of 12 and 10 EPT taxa for Sites W1 and W2, indicating a healthy ecosystem. Site W5 recorded the lowest value with 2 EPT taxa, indicating that this system was severely impaired. The other sites recorded values that indicate that they are moderately impaired. There was a slight increase in both biodiversity and ecosystem condition indices recorded at Site W8. The variations in EPT values are tempered when examined as a ratio of EPT taxa to total number of animals collected. Figure 16 illustrates the EPT Ratio values for all sites surveyed since 2001 and shows that there has been an increase this year across all sites, whereas previously there had not been a significant change in the number of EPT taxa since 2004.

0

1

2

3

4

5

6

SIG

NAL

Date

SIGNAL Index

S3 W1 W2 W3 W5 W8

20

Figure 15. Fluctuations in the EPT index of the Avon River, Avondale Creek and Dog Trap Creek from 2001.

Figure 16. Fluctuations in the EPT Ratio of the Avon River, Avondale Creek and Dog Trap Creek from 2001. The results of the EPT index and EPT ratio are reflected in the shredder ratio (Figure 17) which is also showing an increase at all sites. The values recorded at all sites, except Site W5, were the highest observed for each site since the surveys began in 2001. Since 2005, Site W3 has demonstrated a steady decline in condition, although the current results are comparable and higher than those of the last two years.

0

2

4

6

8

10

12

14

No.

of E

PT ta

xa

Date

EPT Index

S3

W1

W2

W3

W5

W8

0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

EPT

ratio

Date

EPT Ratio

S3

W1

W2

W3

W5

W8

21

Figure 17. Fluctuations in the Shredder Ratio of the Avon River, Avondale Creek and Dog Trap Creek from 2001. Figure 18 shows the changes in silt tolerant taxa at each site and over time. The results indicate that there has been a decrease in the number of silt tolerant taxa in all sites. Site W8 recorded the highest number with 6 taxa while Sites W1 and W5 recorded the lowest with 3 taxa.

Figure 18. Fluctuations in the Silt Tolerant taxa of the Avon River, Avondale Creek and Dog Trap Creek from 2007.

0

0.1

0.2

0.3

0.4

0.5

0.6

Shre

dder

Rat

io

Date

Shredder Ratio

S3 W1 W2 W3 W5 W8

0 1 2 3 4 5 6 7 8 9

10

No.

of T

axa

Date

No. of Silt Tolerant Taxa

S3 W1 W2 W3 W5 W8

22

Discussion Water quality has remained consistent with an overall increase at all sites over the last twelve months, due predominantly to the more regular and higher flows during 2011. All physico-chemical parameters were remarkably consistent over the length of the study area (Table 5) and comparable with previous surveys. The river sites were also well above the minimum requirements as set out by the ANZECC and ARMCANZ guidelines (2000). Rainfall (Figure 1) over the last 12 months has increased compared to the previous year with higher frequency and intensity occurring during the autumn/winter months. The event in June has replenished the surrounding waterways and maintained water quality. There have been a number of smaller rainfall events which has maintained a low to moderate sustained flow in the rivers and creeks and is a significant increase compared with previous years flow regimes. Flow is the major factor that determines water chemistry and, therefore, levels of biological activity, diversity and community structure. The impact of extended periods of reduced flows to no flow, combined with an increase in evaporation over the warmer summer months will result in a reduction in the dilution of the saline groundwater discharges that enters the streams, particularly within the more ephemeral streams. The biological indices indicate an overall increase in environmental condition and health compared with last year’s results. Although all sites still demonstrate some degree of disturbance, both of the Avon River sites can be classed as healthy. The Avondale Creek site (Site W5) is in ‘poor condition’ using the SIGNAL index, which is the same as the last survey (October 2010) and classified from moderately to severely impaired using the EPT index. Dog Trap Creek (Site W3), which is the control site, increased in condition from very poor to poor and from severely impaired to slightly impaired condition. The pattern in ecosystem condition values is attributed to the continued higher flow conditions that have occurred this year, with an increase in events compared with last year. The total rainfall for the 2010-2011 period was above average compared with the last eight years. The combined results indicate that the aquatic ecosystems are still being impacted from the previous low flow conditions although the river systems have showed a steady improvement with more regular flows. The condition of the aquatic macroinvertebrate communities in the Avon River, Avondale Creek and Dog Trap Creek has increased compared with the previous year across all sites, with different elements of the fauna demonstrating variable responses. The biodiversity and the overall health of the Avon River at Sites W1 and W2 and all other sites was higher than the previous survey but comparable or higher than earlier surveys. The condition indices have also been assisted by the consistent decrease in numbers of silt tolerant taxa recorded at each site appears to be as a result of higher flows that have removed a substantial amount of fine sediments within the sites as a result of the prolonged higher flows and an increase number of high magnitude scouring flows. In conclusion, the results from the current survey suggest that the improvement in flow conditions have had a marked positive effect on the ecological conditions at all sites. While it is still acknowledged that the previous low flow conditions have had a long term adverse impact on the health of the Avon River system, the survey indicates that the ecological condition of the Avon River and its tributaries has improved over the last three years. The results also indicate that there are no adverse impacts on the Avon River and its tributaries that are associated with the operations of Stratford Mine complex. This is due to the results showing consistent values and patterns for sites within and below the mining area compared with sites outside or upstream (control sites) of the area of the mining operation.

23

Acknowledgements We are grateful to John Trotter for his assistance in the field and Alarna Pain for providing background information on water quality and site history.

References Anonymous. 1994. National River Processes and Management Program Monitoring River Health Initiative. River Bioassessment Manual Version 1.0. Department of the Environment, Sport and Territories, Canberra. Australian and New Zealand Environment and Conservation Council and Agriculture and Resource Management Council of Australia and New Zealand 2000, Australian Water Quality Guidelines for Fresh and Marine Waters, National Water Quality Management Strategy, Australian and New Zealand Environment and Conservation Council, Canberra. Besley, C.H., McEvoy, P.M. and Chessman, B.C. 1996. Biological Assessment of the Streams in the Stratford Coal Project Area. Australian Water Technologies, Ensight, Report Number 96/152. Besley, C.H. and Growns, I. 1998. Biological Assessment of the Streams in the Stratford Coal Project Area. Australian Water Technologies, Ensight, Report Number 98/144. Chessman, B.C. 1995. Rapid assessment of rivers using macroinvertebrates: a procedure based on habitat-specific sampling, family-level identification and a biotic index. Australian Journal of Ecology, 20(1):122-129. Chessman, B.C., Growns, J.E. and Kotlash, A.R. 1997. Objective derivation of macroinvertebrate family sensitivity grade numbers for the SIGNAL biotic index: application to the Hunter River system, New South Wales. Marine and Freshwater Research, 48:159-172. Davies, P.E. (2000) Development of a national river bioassessment system (AUSRIVAS) in Australia. In: Assessing the Biological Quality of Freshwaters: RIVPACS and other techniques. Eds. Wright, J.F., Sutcliffe, D.W. and Furse, M.T., pp.113-124, Freshwater Biological Association, Ambleside, Cumbria, UK. Lenat, D.R. 1988. Water quality assessment of streams using a qualitative collection method for benthic macroinvertebrates. Journal of the North American Benthological Society 7(3):222-233. Simpson, J. and Norris, R.H. (2000) Biological assessment of river quality: development of AUSRIVAS models and outputs. In: Assessing the Biological Quality of Freshwaters - RIVPACS and other techniques. Eds. Wright, J.F., Sutcliffe, D.W. and Furse, M.T., Freshwater Biological Association, Ambleside, Cumbria, UK. Turak, E., Waddell, N. and Johnstone, G. 2004. New South Wales (NSW) Australian River Assessment System (AUSRIVAS) Sampling and Processing Manual. (http://ausrivas.canberra.edu.au/Bioassessment/Macroinvertebrates/) Williams, W.D. 1981. Australian Freshwater Life. The Invertebrates of Australian Inland Waters. Macmillan Education Australia Pty Ltd. Melbourne.

24

Appendix 1. A list of macroinvertebrate genera found at the six sample sites.

Order Family Species S3 W1 W2 W3 W5 W8 Acarina Hygrobatidae undetermined * * *

*

Bivalvia Sphaeriidae Pisidium

* * * Coleoptera Dystiscidae Batrachomatus

*

Coleoptera Dystiscidae Bidessodes *

*

* Coleoptera Dystiscidae Bidessus *

* * *

Coleoptera Dystiscidae Chostonectes * *

* Coleoptera Dystiscidae Necterosoma * * *

Coleoptera Elmidae Austrolimnius

* * * Coleoptera Haliplidae Haliplus * * *

*

Coleoptera Hydraenidae undetermined *

* Coleoptera Hydrophilidae Berosus * * * *

Decapoda Atyidae Caridinides * * *

* * Decapoda Atyidae Paratya australiensis

*

*

Decapoda Paleamonidae Macrobrachium *

*

* Decapoda Parastacidae Cherax

*

Diptera Ceratopogonidae Bezzia * *

* * Diptera Chironomidae Chironominae * * * * * * Diptera Chironomidae Orthocladinae * * *

*

Diptera Chironomidae Tanypodinae * * * * * * Diptera Culicidae Culicinae

*

*

Diptera Simuliidae Simulium

* * * * * Diptera Tipulidae sp.

*

Ephemeroptera Baetidae Cloeon * * *

* * Ephemeroptera Caenidae Tasmanocoenis

* * *

Ephemeroptera Leptophlebiidae Atalophlebia sp. AV12

* * * Ephemeroptera Leptophlebiidae Austrophlebioides sp. AV9

* *

Ephemeroptera Leptophlebiidae Jappa *

* Gastropoda Lymnaeidae Austropeplea *

* * *

Gastropoda Physidae Haitia acuta * *

* * * Gastropoda Planorbidae Glyptophysa *

*

* *

Gastropoda Planorbidae Gyraulus *

* Gastropoda Planorbidae Isidorella

*

Hemiptera Corixidae Micronecta *

* *

* Hemiptera Corixidae Sigara *

*

Hemiptera Gerridae Limnogonus

* Hemiptera Notonectidae Anisops

* *

Hemiptera Pleidae Plea * * * Hemiptera Veliidae Microvelia

*

*

*

Hirudinea Richardsonianidae Richardsoniana

* * Hirudinea Glossiphoniidae Undetermined

* * *

Megaloptera Corydalidae Archichauloides guttiferus

* Odonata Aeshnidae Aeshna

* * * *

Odonata Coenagrionidae Ischnura

* * * * Odonata Hemicorduliidae Hemicordulia

*

Odonata Libellulidae Diplacodes

* * * * Odonata Macromiidae Macromia

* *

*

Odonata Megapodagrionidae Austroargiolestes * * Oligochaete Lumbriculidae Lumbricus variegatus

* * *

*

Oligochaete Tubificidae Undetermined

*

25

Platyhelminthes Dugesiidae Undetermined

* *

* Plecoptera Grypopterygidae Illiesoperla

*

Trichoptera Ecnomidae Ecnomus

* * *

* Trichoptera Hydropsychidae Asmicridea sp.AV1

*

Trichoptera Hydropsychidae Cheumatopsyche sp.AV1

* Trichoptera Hydroptilidae Hellythira *

* * * *

Trichoptera Leptoceridae Oecetis * * * * Trichoptera Leptoceridae Triplectides * * *

*

Trichoptera Philopotamidae Chimarra

* * Trichoptera Philopotamidae Hydrobiosella

*

44 59

Groundwaters

Bore ID Date Depth to Water Well Depth DtoW pH EC Na Cl Fe(filt) SO4 TSS ORP Tempfrom top of collar below ground uS/cm mg/l mg/l mg/l mg/l mg/l

(m) (m)GW1 29-Sep-11 14.48 16.42 13.58 5.3 1562 317 477 68.9 42 3130 165 17.2

29-Dec-11 14.82 16.42 13.92 5.4 974 97 121 18.2 10 704 87 20.616-Mar-12 15.41 16.42 14.51 5.5 560 103 100 517.0 29 42000 115 22.128-Jun-12 16.04 16.42 15.14

GW2 29-Sep-11 9.55 17.03 8.35 6.7 3990 779 1270 28.6 24 158 4 18.629-Dec-11 9.37 17.03 8.17 6.6 3810 805 1280 21.4 23 126 12 19.016-Mar-12 9.37 17.03 8.17 6.5 4380 541 732 27.6 12 205 34 19.328-Jun-12 9.40 17.03 8.20 6.6 4430 769 1380 19.2 25 100 33 19.1

GW3 29-Sep-11 1.23 6.38 0.33 3.9 3740 745 1200 25.2 47 530 239 15.729-Dec-11 1.41 6.38 0.51 4.1 3370 772 1230 26.6 69 444 218 20.816-Mar-12 1.32 6.38 0.42 4.0 3880 734 1220 15.8 68 374 148 25.628-Jun-12 1.41 6.38 0.51 3.6 4580 769 1330 9.3 70 292 241 15.9

GW4 29-Sep-11 0.50 5.97 -0.20 6.5 9510 2360 5340 2.4 140 66 82 17.016-Mar-12 0.50 5.97 -0.20 6.5 10790 709 1150 4.3 25 375 108 24.6

GW5 29-Sep-11 3.99 8.55 2.99 6.7 3680 733 1140 69.5 17 1640 45 15.916-Mar-12 3.84 8.55 2.84 6.7 2410 617 1010 40.3 11 1640 8 20.3

GW7 29-Sep-11 2.45 8.28 1.70 6.3 1819 340 577 7.38 36 38 33 18.216-Mar-12 2.55 8.28 1.80 6.4 1037 165 266 4.86 27 30 18 21.2

GW8 29-Sep-11 7.99 11.75 7.09 5.1 4980 1030 1370 107.0 543 666 142 16.929-Dec-11 7.80 11.75 6.90 4.7 4950 1230 1740 64.2 415 54 216 19.916-Mar-12 7.73 11.75 6.83 5.1 5480 1110 1530 54.3 428 189 123 20.728-Jun-12 9.01 11.75 8.11 5.2 5610 1070 1680 51.5 445 78 88 17.4

Depth Bore Volume Cond. ORP Sulfate Sodium Chloride Iron TSS Temp(m) Volume Purged (uS/cm) (mV) (mg/L) (mg/L) (mg/L) (mg/L) mg/L °C

29-Sep-11 0.35 8 12 (dry) 5.4 5490 209 605 1260 1550 1.77 44 14.616-Mar-12 0.47 7 9 6.04 3820 83 220 629 803 8.75 208 21.7

Bore Id DATE pH

BRWN1

Too low to sample

Bore Id DATE Depth to Corrected pH Cond. TDS ORP Temp Iron Sodium Chloride Sulphate Water Level (m) DTWL (m) (uS/cm) (mg/L) (mv) °C (mg/L) (mg/L) (mg/L) (mg/L)

RB1 31-Aug-11 4.22 3.62 6.5 7,650 -- 16 17.4 11.4 1660 3610 3829-Nov-11 4.13 3.53 6.9 6,700 -- 16 22.9 15 1640 3610 4029-Feb-12 3.95 3.35 6.7 7,530 -- 17 -- 5.19 1660 3530 4730-Jul-12 4.29 3.69 6.7 11,010 79 16.4 15.2 1570 3740 34

RB2 31-Aug-11 2.58 1.48 6.6 7,790 -- 85 15.8 0.66 1800 3650 11529-Nov-11 2.48 1.38 6.9 6,510 -- 88 20.4 0.84 1760 3490 13829-Feb-12 2.37 1.27 6.8 8,420 -- 95 -- 0.38 1780 3500 11930-Jul-12 2.73 1.63 6.7 1,099 157 15.1 0.44 1700 3730 128

RB3 31-Aug-11 Dry29-Nov-11 12.75 11.90 5.1 3,670 -- 118 20.3 16.1 840 1080 76029-Feb-12 12.75 11.90 5.6 3,920 -- 57 -- 32.5 794 969 50830-Jul-12 12.75 11.90 5.1 2,970 169 16.3 15.9 486 684 284

Note: 30-July-12 results conducted for May sampling period

Bore Id DATE Depth to Corrected Bore Vol. Purged Vol. pH Cond. ORP Temp Calcium Iron Lead Magnesium Manganese Phosphorus Potassium SodiumBicarbonate (as CaCO3) Chloride Sulphate

Water Level (m) DTWL (m) (L) (L) (uS/cm) (mv) °C (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L)MW3 28-Jul-11 Dry

31-Aug-11 Dry28-Sep-11 Dry31-Oct-11 Dry28-Nov-11 5.29 4.79 0.4 0.2 6.3 884 30 2421-Dec-11 Dry20-Jan-12 Dry27-Mar-12 Dry14-Mar-12 Dry26-Apr-12 Dry30-May-12 Dry27-Jun-12 Dry

MW4 28-Jul-11 13.06 12.5631-Aug-11 13.12 12.62 6.0 8.0 6.7 6250 47 19.4 232 1.67 0.001 215 0.753 0.08 10 1180 668 2480 58.028-Sep-11 13.18 12.6831-Oct-11 13.32 12.8228-Nov-11 13.33 12.83 5.0 5.0 7.2 5000 40 20.9 165 4.75 0.016 193 0.624 0.05 11 1040 598 2150 63.021-Dec-11 13.35 12.8520-Jan-12 13.52 13.0227-Feb-12 13.57 13.07 4.8 4.8 d 7.1 6370 28 158 17.80 0.017 167 0.877 0.31 10 911 310 1790 47.014-Mar-12 13.62 13.1226-Apr-12 13.74 13.2430-May-12 13.97 13.47 4.0 4.0 6.9 7600 63 19.8 233 9.37 0.009 219 0.705 0.24 11 1190 904 2340 70.027-Jun-12 14.05 13.55

MW6 28-Jul-11 8.07 7.5731-Aug-11 8.39 7.89 4.0 6.0 6.1 305 10 18.2 6 13.50 0.018 6 0.422 0.20 2 45 77 29.0 12.028-Sep-11 10.40 9.9031-Oct-11 8.63 8.1328-Nov-11 6.60 6.10 9.5 10.0 6.7 424 -14 23.3 8 11.10 0.007 9 0.648 0.33 2 62 106 48.0 16.021-Dec-11 8.45 7.9520-Jan-12 9.17 8.6727-Feb-12 8.08 7.58 4.8 8.0 6.8 372 -39 8 22.90 0.029 7 0.532 0.33 2 50 94 33.0 15.014-Mar-12 9.33 8.8326-Apr-12 9.03 8.5330-May-12 9.14 8.64 6.9 5400 -7 15.8 12 25.40 0.021 12 0.661 0.64 2 56 147 36.0 9.027-Jun-12 8.21 7.71

MW7 28-Jul-11 10.27 9.7731-Aug-11 10.21 9.71 0.5 2.0 6.4 4090 -20 18.6 100 90.10 0.008 178 3.83 0.13 9 628 140 1020 77028-Sep-11 10.31 9.8131-Oct-11 10.30 9.8028-Nov-11 10.06 9.56 0.8 1.2 6.5 3420 -5 21.5 99 92.70 0.004 190 3.88 0.14 9 612 141 1040 88721-Dec-11 10.13 9.6320-Jan-12 10.24 9.7428-Feb-12 9.11 8.61 2.0 4.0 6.5 3100 -14 61 43.00 0.008 121 2.38 0.26 8 505 188 828 31614-Mar-12 9.87 9.3726-Apr-12 10.00 9.5030-May-12 9.11 8.61 2.0 2.0 6.7 2450 -6 70 63.00 0.007 131 2.48 0.37 8 538 371 859 30027-Jun-12 10.34 9.84

Too low to sample. Suspect sample is rain water not ground water from recent heavy rain.

Bore Id DATE Depth to Corrected Bore Vol. Purged Vol. pH Cond. ORP Temp Calcium Iron Lead Magnesium Manganese Phosphorus Potassium Sodium Bicarbonate (as CaCO3)

Chloride Sulphate

Water Level (m) DTWL (m) (L) (L) (uS/cm) (mv) °C (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L)MW8 28-Jul-11 7.01 6.51

31-Aug-11 Dry28-Sep-11 Dry31-Oct-11 Dry28-Nov-11 6.58 6.08 1.6 3.0 6.5 2550 -5 21 27 36.00 0.002 28 0.601 0.80 5 501 119 782 12421-Dec-11 7.30 6.8020-Jan-12 Dry28-Feb-12 7.28 6.78 0.2 0.2 6.6 2290 -5514-Mar-12 Dry26-Apr-12 Dry30-May-12 Dry27-Jun-12 Dry

MW10 28-Jul-1131-Aug-1128-Sep-11 13.6231-Oct-11 13.5728-Nov-11 13.49 12.59 14.5 17.0 6.6 3260 -7 235 52.60 0.260 60 1.680 0.22 13.00 493 164 1250 6121-Dec-11 13.35 12.4520-Jan-12 13.42 12.5228-Feb-12 13.04 12.14 15.0 17.0 6.4 3730 -11 216 50.40 0.138 53 1.430 0.07 10.00 479 97 1160 4914-Mar-12 13.16 12.2626-Apr-12 13.15 12.2530-May-12 13.15 12.25 14.0 14.0 6.3 4650 15 18.3 242 44.50 0.106 60 1.190 0.20 10.00 516 170 1190 5327-Jun-12 13.15 12.25

MW11 28-Jul-11 10.42 9.9231-Aug-11 10.30 9.80 32.0 36.0 6.9 1170 33 19.7 48 0.17 <0.001 8 0.026 0.05 3 214 338 187 1328-Sep-11 10.28 9.7831-Oct-11 9.98 9.4828-Nov-11 10.00 9.50 32.0 36.0 7.7 1107 55 21.3 44 0.52 0.005 8 0.033 0.12 3 211 313 179 1421-Dec-11 9.94 9.4420-Jan-12 10.03 9.5328-Feb-12 9.86 9.36 33.0 34.0 7.6 1125 49 53 0.20 <0.001 9 0.024 0.06 3 209 336 17214-Mar-12 9.89 9.3926-Apr-12 9.97 9.4730-May-12 10.08 9.58 32.0 32.0 7.6 1439 127 18.3 51 0.38 0.002 9 0.028 0.09 3 217 425 172 1327-Jun-12 lid stuck

No access- cementedNo aceess- cemented

Too low to sample

Bore Id DATE Depth to Corrected Bore Vol. Purged Vol. pH Cond. ORP Temp Calcium Iron Lead Magnesium Manganese Phosphorus Potassium Sodium Bicarbonate (as CaCO3) Chloride Sulphate

Water Level (m) DTWL (m) (L) (L) (uS/cm) (mv) °C (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L)MW12 28-Jul-11 3.28 2.78

31-Aug-11 3.35 2.85 12.0 15.0 6.0 387 43 17 12 9.17 0.015 8 1.98 0.10 2 45 67 63 828-Sep-11 3.42 2.9231-Oct-11 3.40 2.9028-Nov-11 3.20 2.70 12.4 18.0 6.9 433 18 19 13 6.13 0.017 10 2.72 0.20 3 52 80 75 421-Dec-11 3.37 2.8720-Jan-12 3.46 2.9628-Feb-12 3.43 2.93 12.0 16.0 6.0 503 6 18 8.22 0.014 12 4.38 0.07 3 53 98 77 314-Mar-12 3.45 2.9526-Apr-12 3.44 2.9430-May-12 3.48 2.98 12.0 14.0 7.6 1439 127 18 18 7.80 0.009 12 3.89 0.11 3 51 113 69 427-Jun-12 3.45 2.95

Griffin 28-Jul-11 1.51 1.1131-Aug-11 1.48 1.08 6.3 1304 1 13.8 31 3.69 0.036 19 0.146 0.17 2 214 200 333 <128-Sep-11 1.57 1.1727-Oct-11 1.70 1.3028-Nov-11 2.03 1.63 7.1 1452 5 21.9 41 1.55 0.068 24 0.132 0.30 3 265 247 390 1.0021-Dec-11 1.58 1.1820-Jan-12 1.82 1.4227-Feb-12 1.43 1.03 7.0 1440 -40 42 8.32 0.216 25 0.180 0.89 3 218 136 334 14.0014-Mar-12 1.46 1.0626-Apr-12 1.70 1.3030-May-12 1.96 1.56 6.7 1819 157 15.5 42 2.27 0.016 26 0.156 <0.01 3 241 147 348 138.0027-Jun-12 1.93 1.53

Bore Id DATE Depth to pH Cond. Temp Calcium Iron Magnesium Manganese Lead Phosphorus Potassium Sodium Chloride Sulphate Bicarbonate as CaCO3Water Level (m) (uS/cm) (mg/L) (mg/L) (mg/L) (mg/L) (µg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L)

Stratford Shop 27-Oct-11 14.54 7.8 2150 20 19.1 23 <0.05 11 0.042 0.001 0.01 3 536 484 5 47715-Mar-12 14.54 7.9 2280 24.8

Ex-Bramley 27-Oct-11 5.36 7.4 3590 50 19 133 1.16 83 0.131 0.008 2.1 18 722 1220 6 34215-Mar-12 5.14 7.2 3100 20

Ex-Butler/McDonald 28-Oct-1115-Mar-12

Fardell (ex Horner) 28-Oct-11 7.8215-Mar-12 7.80

Forbes 27-Oct-11 9.04 6.4 158.1 37.0 20.1 4 5.42 <1 0.045 0.028 0.16 <1 6 6 1 1615-Mar-12

Germon 27-Oct-11 9.61 7.5 3860 -44.0 20.2 79 6.74 74 0.386 <0.001 0.01 5 844 1000 124 64515-Mar-12 9.32 7.6 3270 30.9

Ex-Griffin 27-Oct-11 1.70 7.4 1361 24 17 38 2.27 25 0.156 0.052 0.23 3 265 357 1 22115-Mar-12 1.46

Hooker 27-Oct-1115-Mar-12

Mitchell 27-Oct-11 9.40 7.4 2910 26.0 20.2 46 1.19 30 0.057 0.001 0.03 4 656 565 64 75215-Mar-12 9.83 7.9 2950

Glew 27-Oct-11 8.85 7.1 2980 23.0 19.4 48 1.12 37 0.223 0.003 0.01 5 733 576 86 81915-Mar-12 8.47 7.3 2990 25.7

Smith 27-Oct-11 4.33 6.9 629 131.0 18.4 18 <0.05 10 0.108 0.002 0.03 <1 96 72 23 16715-Mar-12 3.61 6.9 691 23.5

SCPL Bore, Wood St 27-Oct-11 10.17 7.3 5240 7 19.5 217 385 179 4.87 0.806 7.44 31 1130 1970 179 59415-Mar-12 10.05 6.9 4710 23.5

Probe lost battery during March Samples



No access

Unable to get sample- pump removedUnable to get sample- pump removed

Unable to obtain sample (pump not working)




ORP

No accessNo access

No access

No access

App

endi

x 6:

Blast Monitoring

Bowens Road North Pit Blasting

Date Ellis Clarke Falla Ex-Judge Isaac Number of

Blasts Exceedances

>115dbL Exceedances % >115dbL

Exceedances >120dbL

Exceedances % >120dbL mm/s dBl mm/s dBl mm/s dBl mm/s dBl mm/s dBl

06-Jul-11 <0.23 <114.9 <0.22 <115.0 <0.21 <110.0 <0.22 <114.9 <0.22 <115.0 9 1 11.1 0 0 12-Jul-11 <0.23 <109.8 <0.22 <110.0 <0.21 <110.0 <0.22 <110.0 <0.22 <110.0 10 1 10.0 0 0

11-Aug-11 0.39 106.6 <0.22 <110.0 0.34 99.8 <0.22 <110.0 <0.22 <110.0 11 1 9.1 0 0 16-Aug-11 <0.23 <109.8 <0.22 <110.0 <0.21 <110.0 <0.22 <110.0 <0.22 <110.0 12 1 8.3 0 0 18-Aug-11 <0.23 <109.8 <0.22 <110.0 <0.21 <110.0 <0.22 <110.0 <0.22 <110.0 13 1 7.7 0 0 19-Aug-11 0.05 111.3 <0.22 <110.0 0.42 100.5 <0.22 <110.0 <0.22 <110.0 14 1 7.1 0 0 25-Aug-11 0.42 104.0 <0.22 <110.0 0.60 107.9 <0.22 <110.0 <0.22 <110.0 15 1 6.7 0 0 30-Aug-11 <0.23 <109.8 <0.22 <110.0 <0.21 <110.0 <0.22 <110.0 <0.22 <110.0 16 1 6.3 0 0 01-Sep-11 0.42 108.3 <0.22 <110.0 0.62 105.2 <0.22 <110.0 <0.22 <110.0 17 1 5.9 0 0 07-Sep-11 <0.23 <109.8 <0.22 <110.0 <0.21 <110.0 <0.22 <110.0 <0.22 <110.0 18 1 5.6 0 0 08-Sep-11 <0.23 <109.8 <0.22 <110.0 <0.21 <110.0 <0.22 <110.0 <0.22 <110.0 19 1 5.3 0 0 14-Sep-11 0.36 111.5 <0.22 <110.0 0.30 100 <0.22 <110.0 <0.22 <110.0 20 1 5.0 0 0 22-Sep-11 <0.23 <109.8 <0.22 <110.0 <0.21 <110.0 <0.22 <110.0 <0.22 <110.0 21 1 4.8 0 0 02-Nov-11 0.03 112.6 <0.22 <110.0 0.28 109.1 <0.22 <110.0 <0.22 <110.0 22 1 4.5 0 0 16-Nov-11 0.28 110.1 Wind Triggered 0.31 105.5 <0.22 <110.0 Wind Triggered 23 1 4.3 0 0 07-Dec-11 0.48 76.8 <0.22 <110.0 0.59 107.8 <0.22 <110.0 <0.22 <110.0 24 1 4.2 0 0 21-Dec-11 0.52 108.8 <0.22 <110.0 0.39 104.2 0.36 103.4 0.31 90.1 1 0 0.0 0 0 12-Jan-12 0.39 104.7 <0.22 <110.0 0.59 104.2 0.28 99.1 <0.22 <110.0 2 0 0 0 0 09-Feb-12 0.79 104.5 0.25 99.3 0.67 114.6 0.31 109.9 0.26 108.5 3 0 0 0 0 09-Feb-12 <0.23 <109.8 <0.22 <110.0 0.41 106.9 <0.22 <110.0 <0.22 <110.0 4 0 0 0 0 15-Feb-12 0.35 100.5 <0.22 <110.0 0.59 103.5 <0.22 <110.0 <0.22 <110.0 5 0 0 0 0 01-Mar-12 0.3 102.7 Not Monitored 0.41 97.8 0.32 92.7 <0.22 <110.0 6 0 0 0 0 14-Mar-12 0.44 104.7 <0.22 <110.0 0.36 105.2 <0.22 <110.0 <0.22 <110.0 7 0 0 0 0 23-Mar-12 0.59 106.9 <0.22 <110.0 0.54 109.9 0.31 103.8 0.26 74.9 8 0 0 0 0 23-Mar-12 0.5 79.4 <0.22 <110.0 0.44 100.8 <0.22 <110.0 <0.22 <110.0 9 0 0 0 0 28-Mar-12 <0.23 <109.8 <0.22 <110.0 <0.21 <110.0 <0.22 <110.0 <0.22 <110.0 10 0 0 0 0 05-Apr-12 0.39 108.8 <0.22 <110.0 0.26 105.5 <0.22 <110.0 <0.22 <110.0 11 0 0 0 0 24-Apr-12 0.31 105.9 <0.22 <110.0 0.36 106.3 0.32 102.7 <0.22 <110.0 12 0 0 0 0

03-May-12 <0.23 <109.8 <0.22 <110.0 <0.21 <110.0 <0.22 <110.0 <0.22 <110.0 13 0 0 0 0 10-May-12 0.31 110.9 0.1 110.5 0.39 108.1 0.34 106.7 0.26 104.9 14 0 0 0 0 16-May-12 0.33 97.1 <0.22 <110.0 0.44 101.3 <0.22 <110.0 <0.22 <110.0 15 0 0 0 0 01-Jun-12 0.44 108.2 <0.22 <110.0 0.46 106.3 <0.22 <110.0 <0.22 <110.0 16 0 0 0 0 04-Jun-12 <0.23 <109.8 <0.22 <110.0 0.21 101.8 <0.22 <110.0 <0.22 <110.0 17 0 0 0 0 13-Jun-12 <0.23 <109.8 <0.22 <110.0 <0.21 <110.0 <0.22 <110.0 <0.22 <110.0 18 0 0 0 0 29-Jun-12 <0.23 <109.8 <0.22 <110.0 0.49 103.8 <0.22 <110.0 <0.22 <110.0 19 0 0 0 0

Roseville West Pit Blasting

Date

Ellis Clarke Falla Ex-Judge Isaac Falla Number of

Blasts Exceedances

>115dbL Exceedances % >115dbL

Exceedances >120dbL

Exceedances % >120dbL mm/s dBl mm/s dBl mm/s dBl mm/s dBl mm/s dBl mm/s dBl

07-Jul-11 <0.23 <114.9 <0.22 <115.0 <0.22 <114.9 0.29 82.9 <0.23 <114.9 0.31 110.0 1 0 0.0 0 0.0 11-Jul-11 <0.23 <110.2 <0.22 <110.0 <0.22 <110.0 <0.22 <110.0 <0.23 <110.2 0.29 104.0 2 0 0.0 0 0.0 19-Jul-11 <0.23 <114.9 <0.22 <110.0 <0.22 <114.9 <0.22 <115.0 <0.23 <114.9 <0.21 <114.7 3 0 0.0 0 0.0 25-Jul-11 <0.23 <109.8 <0.22 <110.0 0.34 101.2 <0.22 <110.0 <0.23 <109.8 0.49 107.4 4 0 0.0 0 0.0 26-Jul-11 <0.23 <109.8 <0.22 <110.0 0.32 96.7 0.29 78.4 <0.23 <109.8 0.62 103.6 5 0 0.0 0 0.0 02-Aug-11 <0.23 <109.8 <0.22 <110.0 0.26 96 <0.22 <110.0 <0.23 <109.8 0.39 102.7 6 0 0.0 0 0.0 04-Aug-11 <0.23 <109.8 <0.22 <110.0 0.26 98.5 <0.22 <110.0 <0.23 <109.8 0.39 104.8 7 0 0.0 0 0.0 09-Aug-11 <0.23 <109.8 <0.22 <110.0 <0.22 <110.0 <0.22 <110.0 <0.23 <109.8 0.34 101.6 8 0 0.0 0 0.0 10-Aug-11 <0.23 <114.9 <0.22 <115.0 0.34 101 0.28 91.8 <0.23 <114.9 0.49 107.1 9 0 0.0 0 0.0 15-Sep-11 <0.23 <109.8 <0.22 <110.0 0.28 100 0.31 91.7 <0.23 <109.8 0.49 107.0 10 0 0.0 0 0.0 21-Sep-11 <0.23 <109.8 <0.22 <110.0 0.26 100.6 0.39 90.1 <0.23 <109.8 0.49 105.7 11 0 0.0 0 0.0 27-Sep-11 <0.23 <109.8 <0.22 <110.0 0.3 105 0.28 98.4 <0.23 <109.8 0.57 104.9 12 0 0.0 0 0.0 28-Sep-11 <0.23 <109.8 <0.22 <110.0 0.48 95.6 0.37 88.9 <0.23 <109.8 Not Monitored 13 0 0.0 0 0.0 06-Oct-11 <0.23 <109.8 <0.22 <110.0 0.67 97.6 0.41 85.7 <0.23 <109.8 0.95 100.3 14 0 0.0 0 0.0 19-Oct-11 <0.23 <109.8 <0.22 <110.0 0.39 99.5 0.25 100.3 <0.23 <109.8 0.62 108.3 15 0 0.0 0 0.0 27-Oct-11 <0.23 <109.8 <0.22 <110.0 0.35 99.3 0.41 85.7 <0.23 <109.8 0.46 106.9 16 0 0.0 0 0.0 23-Nov-11 <0.23 <109.8 <0.22 <110.0 0.35 104.4 <0.22 <110.0 <0.23 <109.8 0.44 105.5 17 0 0.0 0 0.0 30-Nov-11 <0.23 <114.9 <0.22 <114.9 0.45 103.6 0.35 102.9 <0.23 <114.9 0.67 101.3 18 0 0.0 0 0.0 01-Dec-11 <0.23 <114.9 <0.22 <114.9 <0.22 <115.0 <0.22 <114.9 <0.23 <114.9 0.41 105.2 19 0 0.0 0 0.0 08-Dec-11 <0.23 <109.8 <0.22 <110.0 <0.22 <110.0 <0.22 <110.0 <0.23 <109.8 0.44 104.2 20 0 0.0 0 0.0 15-Dec-11 <0.23 <109.8 <0.22 <110.0 0.28 99.8 <0.22 <110.0 <0.23 <109.8 0.52 105.8 21 0 0.0 0 0.0 05-Jan-12 <0.23 <109.8 <0.22 <110.0 0.44 107.1 0.27 102 <0.23 <109.8 0.57 105.8 22 0 0.0 0 0.0 19-Jan-12 <0.23 <109.8 <0.22 <110.0 0.51 103.2 0.57 96 <0.23 <109.8 0.72 110.9 23 0 0.0 0 0.0 08-Feb-12 <0.23 <109.8 <0.22 <110.0 0.31 101 <0.22 <110.0 <0.23 <109.8 0.36 106.9 24 0 0.0 0 0.0 10-Feb-12 <0.23 <109.8 <0.22 <110.0 0.26 102.5 <0.22 <110.0 <0.23 <109.8 0.49 105.2 25 0 0.0 0 0.0 16-Feb-12 <0.23 <109.8 <0.22 <110.0 0.44 104.8 0.27 103.3 <0.23 <109.8 0.80 103.8 26 0 0.0 0 0.0 22-Feb-12 <0.23 <109.8 <0.22 <110.0 0.35 104 0.41 93.5 <0.23 <109.8 0.33 107.1 27 0 0.0 0 0.0 23-Feb-12 <0.23 <109.8 <0.22 <110.0 0.08 111.2 <0.22 <110.0 <0.23 <109.8 0.46 113.5 28 0 0.0 0 0.0 08-Mar-12 <0.23 <114.9 <0.22 <114.0 0.43 88 0.3 78.4 <0.23 <114.9 0.46 105.2 29 0 0.0 0 0.0 15-Mar-12 <0.23 <109.8 <0.22 <110.0 0.25 106.6 <0.22 <110.0 <0.23 <109.8 0.36 104.5 30 0 0.0 0 0.0 29-Mar-12 <0.23 <109.8 <0.22 <110.0 0.39 107.1 0.62 78.4 <0.23 <109.8 0.52 109.7 31 0 0.0 0 0.0 12-Apr-12 <0.23 <109.8 <0.22 <110.0 <0.22 <110.0 <0.22 <110.0 <0.23 <109.8 0.31 108.5 32 0 0.0 0 0.0 19-Apr-12 <0.23 <109.8 <0.22 <110.0 <0.22 <110.0 <0.22 <110.0 <0.23 <109.8 <0.21 <110.0 33 0 0.0 0 0.0 26-Apr-12 <0.23 <109.8 <0.22 <110.0 <0.22 <110.0 <0.22 <110.0 <0.23 <109.8 0.33 106.9 34 0 0.0 0 0.0 04-May-12 <0.23 <109.8 <0.22 <110.0 0.47 110.4 0.64 104.9 <0.23 <109.8 0.70 113.3 35 0 0.0 0 0.0 09-May-12 <0.23 <109.8 <0.22 <110.0 <0.22 <110.0 0.37 102.8 <0.23 <109.8 0.52 109.1 36 0 0.0 0 0.0 17-May-12 <0.23 <109.8 <0.22 <110.0 0.57 107.5 0.53 105.7 <0.23 <109.8 0.72 109.7 37 0 0.0 0 0.0 24-May-12 <0.23 <109.8 <0.22 <110.0 0.26 109.2 0.26 78.4 <0.23 <109.8 0.44 107.6 38 0 0.0 0 0.0 08-Jun-12 <0.23 <109.8 <0.22 <110.0 0.41 101.5 0.44 94.4 <0.23 <109.8 0.59 103.1 39 0 0.0 0 0.0 14-Jun-12 <0.23 <109.8 <0.22 <110.0 0.34 103.2 0.35 96 <0.23 <109.8 0.52 104.5 40 0 0.0 0 0.0 22-Jun-12 <0.23 <109.8 <0.22 <110.0 0.3 103.2 0.29 102.9 <0.23 <109.8 0.46 107.6 41 0 0.0 0 0.0

annual review - stratford coal...the metallurgical coal is a semi-hard coking coal with high...

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