WAMBO COAL PTY LIMITED · 1 introduction 1 1.1 purpose and scope 1 1.2 abbreviations and acronyms 3...

WAMBO COAL PTY LIMITED

EXTRACTION PLAN

LONGWALLS 11 TO 16

SOUTH BATES UNDERGROUND MINE

APPENDIX EBUILT FEATURES MANAGEMENT PLAN

WAMBO COAL PTY LIMITED SOUTH BATES UNDERGROUND MINE

BUILT FEATURES MANAGEMENT PLAN

LONGWALLS 11 - 16

PREPARED BY WAMBO COAL PTY LIMITED AND

RESOURCE STRATEGIES PTY LTD

JANUARY 2017 Project No. WAM-09-15 Document No. 00805549

Built Features Management Plan – South Bates Underground Mine Longwalls 11-16

BFMP LW11-16 Rev C January 2017 Page i

RELEVANT STAKEHOLDERS This Built Features Management Plan provides a summary of the management plan prepared for assets relevant to Wambo Coal Pty Limited. Wambo Coal Pty Limited is the only relevant stakeholder as there are no built features owned or operated by other parties. DOCUMENT CONTROL

Document No. BFMP LW11-16

Title Built Features Management Plan for South Bates Underground Mine Longwalls 11 to 16

General Description Management of potential subsidence impacts and/or environmental consequences on all public infrastructure and all classes of other built features for mining of Longwalls 11 to 16 at the South Bates Underground Mine

Revisions

Rev No Date Description By Checked

A October 2015 Final for Submission WCPL and Resource Strategies

T. Britten

B January 2016 Incorporation of Addendum

WCPL and Resource Strategies

T. Britten

C January 2017 Update to include Longwalls 14 to 16

WCPL and Resource Strategies

T. Britten

The nominated Coordinator for this document is Technical Services Manager


BFMP LW11-16 Rev C January 2017 Page ii

TABLE OF CONTENTS Section Page

1 INTRODUCTION 1 1.1 PURPOSE AND SCOPE 1 1.2 ABBREVIATIONS AND ACRONYMS 3 1.3 STRUCTURE OF THE BUILT FEATURES MANAGEMENT PLAN 3

2 BUILT FEATURES 3 3 PERFORMANCE MEASURES 6 4 LEGAL REQUIREMENTS AND GUIDELINES 7 5 SUBSIDENCE PREDICTIONS 7 6 RISK ASSESSMENT 9 7 ROLES AND RESPONSIBILITIES 9 8 REPORTING FRAMEWORK 9 9 MANAGEMENT PLAN REVIEW 12 10 REFERENCES 12

LIST OF TABLES

Table 1 Summary of Built Features within the Longwalls 11 to 16 Application Area

Table 2 Built Features Performance Measures

Table 3 Maximum Predicted Subsidence, Tilt and Strains for Longwalls 11 to 16 Table 4 BFMP Key Personnel Contact Details

Table 5 Summary of Reporting Framework

LIST OF FIGURES

Figure 1 Location of Built Features

Figure 2 Wambo Coal Mine Environmental Management System

Figure 3 Notification Areas under the Dams Safety Act, 1978 Figure 4 Predicted Subsidence from the South Bates Underground Mine

Figure 5 WCPL Organisation Structure

LIST OF ATTACHMENTS

Attachment 1 WCPL Asset Management Plan Longwalls 11 - 16


BFMP LW11-16 Rev C January 2017 Page 1

1 INTRODUCTION The Wambo Coal Mine is an open cut and underground coal mining operation located approximately 15 kilometres (km) west of Singleton, near the village of Warkworth, New South Wales (NSW). The Wambo Coal Mine is owned and operated by Wambo Coal Pty Limited (WCPL), a subsidiary of Peabody Energy Australia Pty Limited. The South Bates Underground Mine is a component of the approved Wambo Coal Mine. The South Bates Underground Mine commenced in Longwall 11 in February 2016 and involves extraction of coal by longwall mining methods from the Whybrow Seam and Wambo Seam within Coal Lease (CL) 397 and Mining Lease (ML) 1594 (Figure 1). The potential environmental impacts of the existing Wambo Coal Mine (including the approved South Bates [Whybrow Seam] Underground Mine) were assessed in the Wambo Development Project Environmental Impact Statement (the Wambo Development Project EIS) (WCPL, 2003). Development Consent DA 305-7-2003 for the Wambo Coal Mine was granted on 4 February 2004 by the then NSW Minister for Urban Affairs and Planning under Part 4 of the NSW Environmental Planning and Assessment Act, 1979. An application to modify the Development Consent (DA 305-7-2003 MOD 15) was lodged in July 2015 to allow an extension to the South Bates Underground Mine to include three additional longwalls (Longwalls 14 to 16) in the Wambo Seam and was approved on 10 November 2015. The application was accompanied by the South Bates (Wambo Seam) Underground Mine Modification Environmental Assessment (WCPL, 2015). An Extraction Plan for Longwalls 11 to 13 was approved by the NSW Department of Planning and Environment (DP&E) on 9 February 2016. The approved Extraction Plan for Longwalls 11 to 13 has been revised to include Longwalls 14 to 16 within the South Bates Underground Mine for a consolidated Extraction Plan for Longwalls 11 to 16. This Built Features Management Plan (BFMP) has been updated from the previous revision (Revision B) to incorporate Longwalls 14 to 16 in the Wambo Seam.

1.1 PURPOSE AND SCOPE Purpose: This BFMP for Longwalls 11 to 16 outlines the management of all classes of built features

for the proposed secondary workings described in the Extraction Plan. Scope: This BFMP covers all classes of built features within the Longwalls 11 to 16 Application

Area (Figure 1). This BFMP has been prepared in accordance with Condition 22C(g) of Schedule 4 of the Development Consent (DA 305-7-2003) as a component of the South Bates Underground Mine Longwalls 11 to 16 Extraction Plan. This BFMP has been prepared by WCPL with assistance from Resource Strategies. The appointment of the team of suitably qualified and experienced experts (which includes representatives from WCPL and Resource Strategies) has been endorsed by the Secretary of the DP&E.

!?

!?

!?

!?!?

!?

!(

"

Approved MontroseWater Storage

(Not Yet Constructed)

Creek

Stony

"

North Wambo Creek Diversion

LW 16

LW 15

LW 14

WOLLEMI NATIONAL PARK

LW 11

LW 12

LW 13

"

South Bates (Wambo Seam)

Underground Mine

"

South Bates (Whybrow Seam)Underground Mine

"

North WamboUnderground Mine

"

South WamboUnderground Mine

"

D

D Extension

C

B

E

"

Previous Alignment of North Wambo Creek

CCL 743

CL 397

ML 1594

CCL 743

ML 1402

ML 1572 CL 374

P301

P315

GW19

GW21N2

N3

307000

3070

00

308000

3080

00

309000

3090

00

6392000 6392000

6393000 6393000

6394000 6394000

6395000 6395000

Location of Built Features

W A M B O C O A L M I N E

Figure 1

0 0.5

Kilometres

±

WAM

-09-

15_ S

th Ba

tes EP

_Lon

gwall

s11-

16_B

FMP_

2 01G

GDA 1994 MGA Zone 56

LEGENDRemnant Woodland Enhancement Program (RWEP) AreaMining and Coal Lease BoundaryExisting/Approved Surface Development AreaSouth Bates (Whybrow Seam) Underground MineSouth Bates (Wambo Seam) Underground MineOther Approved Underground DevelopmentExtraction Plan Application AreaFire TrailAccess Track

11 kV Power Line11 kV Power Line Buried66 kV Power Line and Fibre Optic CableSurface Water Supply/Dewatering PipelineBuried Water Supply/Dewatering PipelineBuildingsDamsGroundwater Monitoring SiteGas Riser 01

Source: Department of Lands (July 2009); MSEC (2013); WCPL (2016); WCPL Orthophoto (July 2016)

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1.2 ABBREVIATIONS AND ACRONYMS BFMP Built Features Management Plan

CCC Community Consultative Committee

CL Coal Lease

DPI Water Department of Primary Industries – Water

DP&E NSW Department of Planning and Environment

DRE NSW Division of Resources and Energy

EPA NSW Environment Protection Authority

km kilometre

kV kilovolt

ML Mining Lease

MSB Mine Subsidence Board

MSEC Mine Subsidence Engineering Consultants

NSW New South Wales

OEH NSW Office of Environment and Heritage

WAMP WCPL Asset Management Plan

WCPL Wambo Coal Pty Limited

1.3 STRUCTURE OF THE BUILT FEATURES MANAGEMENT PLAN This BFMP forms part of WCPL’s Environmental Management System for the Wambo Coal Mine and includes a WCPL Asset Management Plan for Longwalls 11 to 16 (WAMP) (component plan), provided in Attachment 1. The relationship of this BFMP to the Wambo Coal Mine Environmental Management System is shown on Figure 2. The Longwalls 11 to 16 Application Area does not intersect the Notification Area of any Prescribed Dam gazetted under the Dams Safety Act, 1978 (Figure 3).

2 BUILT FEATURES A number of WCPL-owned built features are located within the Longwalls 11 to 16 Application Area as indicated in Figure 1. Monitoring and management measures have been developed for each of these built features and are detailed in the WAMP as summarised in Table 1. WCPL owns all assets within the Longwalls 11 to 16 Application Area. The Longwalls 11 to 16 Application Area is located wholly within the Patrick Plains Mine Subsidence District (proclaimed 2 July 1980). Wells, fences, gates and tracks are the only man-made structures in the Longwalls 11 to 16 Application Area known to have been constructed prior to declaration of the Mine Subsidence District. The Longwalls 11 to 16 Application Area is wholly within WCPL-owned land and there are no relevant proposed developments within the Longwalls 11 to 16 Application Area proposed by other parties.

Mining Operations Plan/Rehabilitation Management Plan (C. 94C)Life of Mine Rejects Emplacement Strategy (C. 22G)

Environmental Management Strategy/Environmental Monitoring Program

Safety Management System (C. 91) Public Safety Management Plan (C. 22C[g])

Subsidence Monitoring Program (C. 22C[g])

Coal Resource Recovery Plan (C. 22C[g])

Built Features Management Plan (C. 22C[g])

Site Water Management Plan (C. 30)

Heritage Management Plan (C. 52 & C. 22C[h])

Bushfire Management Plan (C. 93)

Wambo Homestead ComplexConservation Management Plan (C. 58)

Noise Management Plan (C. 9)

Air Quality and Greenhouse Gas Management Plan (C. 5C)

Blast Management Plan (C. 20)

Final Void Management Plan (C. 39)

Traffic Management Plan (C. 80)

Wambo Homestead ComplexMine Management Plan (C. 57)

Groundwater Monitoring Program (C. 30[f])

Surface and Groundwater Response Plan (C. 30[g])

North Wambo Creek Diversion Plan (C. 30[c])

Erosion and Sediment Control Plan (C. 30[d])

Surface Water Monitoring Program (C. 30[e])

Biodiversity Management Plan (C. 44 & C. 22C[h])

Vegetation Clearance Protocol (C. 44[a])

Threatened Species Management Protocol (C. 44[b])

Remnant Woodland Enhancement Program (C. 44[c])

Biodiversity Monitoring Program (C. 44[d])

Land Management Plan (C. 22C[h])

Extraction Plan (C. 22C)

Water Management Plan (C. 22C[h])

Development ConsentDA 305-7-2003

Mining Leases


Wambo Coal MineEnvironmental Management System

Figure 2WAM-09-15_Sth Bates EP_Longwalls11-16_BFMP_001B

WCPL Asset Management Plan

Scrub

Road

Wallaby

(Jerrys Plains Road)

HighwayGolden

!(

WollombiBrook

Wollombi

Brook"

Approved Montrose Water Storage(Not Yet Constructed)

Wam

bo

Creek


Creek

Ston

y

"

Previous Alignment of North Wambo Creek

DD Extension

A

C

B

United Collieries

"

Administration Access Road(Not Constructed)

"

South Wambo Dam

WARKWORTH

"

Wambo Access Road

"Wambo Coal Terminal

Hunter ValleyOperations

"

Product CoalConveyor

"

Administration Buildingsand Workshops

WarkworthMine

RWEP Wambo Coal Terminal

CHPP

Hunter ValleyOperations

CCL 743

CCL 743

"


LW12

LW13

LW16

LW15

LW14

LW11

"South Bates (Wambo Seam)

Underground Mine

"

South Bates (Whybrow Seam)

Underground Mine

E

Wambo Cr

eek

North

Waterfa

ll

Creek

Redbank Creek

Hunter

River

HUNTER VALLEY OPERATIONSLAKE JAMES NA-254

WAMBO CHITTER DUMP

NORT

H EA

ST TA

ILIN

GS D

AM N

A -56

WAMBO

SOUTH

WATER

DAM NA-235 WA

RKWO

RTH

NORT

H PI

TTA

ILING

S DAM

NA-

82

WATER DAM NA-203

"

CHPP Portal

CL 397

ML 1594

ML1594

CL 365

CCL 743

ML 1402

ML 1572 CL 374

305000

3050

00

310000

3100

00315000

3150

00

6390000 6390000

6395000 6395000

WAM-09-15_Sth Bates EP_Longwalls11-16_BFMP_202C

Notification Areasunder the Dams Safety Act, 1978

Figure 3

0 2

Kilometres

W A M B O C O A L M I N E±

Source: Department of Lands (July 2009); WCPL (2016); WCPL Orthophoto (July 2016)

LEGENDWCPL Owned LandMining and Coal Lease BoundaryExisting/Approved Surface Development AreaSouth Bates (Whybrow Seam) Underground MineSouth Bates (Wambo Seam) Underground MineOther Approved Underground DevelopmentRemnant Woodland Enhancement Program (RWEP) AreaExtraction Plan Application AreaPrescribed Dam Notification Area

GDA 1994 MGA Zone 56



Table 1 Summary of Built Features within the Longwalls 11 to 16 Application Area

Built Feature Relevant Stakeholder Component Plan

Buried 11 kilovolt (kV) powerlines, telecommunication and fibre optic cables

WCPL WAMP (Attachment 1)

Water supply pipelines and associated pumps and ancillary infrastructure

WCPL WAMP (Attachment 1)

Groundwater monitoring bores (GW19 and N3) WCPL WAMP (Attachment 1)

Bates South pit walls WCPL WAMP (Attachment 1)

Exploration drill holes WCPL WAMP (Attachment 1)

Fences WCPL WAMP (Attachment 1)

Gas Riser 01 WCPL WAMP (Attachment 1)

Unsealed roads WCPL WAMP (Attachment 1)

Site access tracks WCPL WAMP (Attachment 1)

Other unsealed tracks WCPL WAMP (Attachment 1)

Exploration plant that may be located in the area WCPL WAMP (Attachment 1)

Drainage culverts WCPL WAMP (Attachment 1)

North Wambo Creek Diversion WCPL -1 1 The North Wambo Creek Diversion is managed separately in accordance with the Water Management Plan for

Longwalls 11 to 16. There are no state survey control marks within the Longwalls 11 to 16 Application Area. There are state survey control marks located more than 1.5 km from the longwalls (Mine Subsidence Engineering Consultants [MSEC], 2017). Any far-field movements to survey control marks would be managed in accordance with the conditions of the mining lease.

3 PERFORMANCE MEASURES The performance measures specified in Table 14B of Schedule 4 of the Development Consent (DA 305-7-2003) relevant to built features are listed in Table 2.

Table 2

Built Features Performance Measures

Feature Subsidence Impact Performance Measure

All built features Always safe.

Serviceability should be maintained wherever practicable. Loss of serviceability must be fully compensated.

Damage must be fully repairable, and must be fully repaired or else replaced or fully compensated.

Source: Table 14B of Schedule 4 of the Development Consent (DA 305-7-2003).

In accordance with Condition 22 and 22A of Schedule 4 of the Development Consent (DA 305-7-2003), WCPL must ensure that there is no exceedance of the performance measures listed in Tables 14A and 14B of Schedule 4 of the Development Consent (DA 305-7-2003).



Performance indicators for the performance measures relating to the built features within the Longwalls 11 to 16 Application Area are presented in the relevant component plan of this BFMP as summarised in Table 1. The assessment of the secondary extraction of Longwalls 11 to 16 against the performance indicators for the performance measures for built features would be undertaken in accordance with the relevant component plan of this BFMP.

4 LEGAL REQUIREMENTS AND GUIDELINES The Development Consent (DA 305-7-2003) includes provisions for dispute resolution between WCPL and the owner of any built feature over the interpretation, application or implementation of the performance measures listed in Table 2. Specifically Condition 22B of Schedule 4 of the Development Consent (DA 305-7-2003) states:

Any dispute between the Applicant and the owner of any built feature over the interpretation, application or implementation of the performance measures in Table 14B is to be settled by DRE. DRE may seek the advice of the MSB on the matter. Any decision by DRE shall be final and not subject to further dispute resolution under this consent.

Additional requirements under WCPL mining tenements in regard to built features within the Longwalls 11 to 16 Application Area are addressed in Attachment 1 of the Extraction Plan.

5 SUBSIDENCE PREDICTIONS Predictions of subsidence effects for Longwalls 11 to 16 were developed by MSEC (2017). The maximum subsidence, tilts and curvatures predicted for Longwalls 11 to 16 are summarised in Table 3 and the location of predicted subsidence is presented in Figure 4.

Table 3 Maximum Predicted Subsidence, Tilt and Strains for Longwalls 11 to 16

Subsidence Parameter Maximum Values Predicted Anywhere Above the Longwalls

Maximum Subsidence (mm) 4,150

Maximum Tilt (mm/m) 100

Maximum Hogging Curvature (km-1) > 3.0

Maximum Sagging Curvature (km-1) > 3.0 Source: MSEC (2017).

mm = millimetre.

mm/m = millimetres per metre.

km-1 = per kilometre.

ML 1572 CL 374

ML 1594

ML 1594

CCL 743

ML 1402

CL 397

CCL 743

"

Approved MontroseWater Storage

(Not Yet Constructed)

N

Wambo

Creek

Creek

Stony

North

"


LW 16

LW 15

LW 14


"South Bates

(Wambo Seam)Underground Mine

"

South Bates (Whybrow Seam)

Underground Mine

LW 11

LW 12

LW 13

"

North WamboUnderground Mine

"

South WamboUnderground Mine

"

308000

3080

00

310000

3100

006392000 6392000

6394000 6394000

WAM-09-15_Sth Bates EP_Longwalls11-16_BFMP_203C

Predicted Subsidence from the South Bates Underground Mine

Figure 4


Source: Department of Lands (July 2009); WCPL (2016); WCPL Orthophoto (July 2016) and MSEC (2016)

LEGENDMining and Coal Lease BoundaryExisting/Approved Surface Development AreaSouth Bates (Whybrow Seam) Underground MineSouth Bates (Wambo Seam) Underground MineOther Approved Underground DevelopmentExtraction Plan Application Area

0 0.8

Kilometres

±GDA 1994 MGA Zone 56

20501002004006008001000120014001600180020002200240026002800300032003400360038004000

Subsidence Contour Colour Scale (mm)



6 RISK ASSESSMENT A Subsidence Risk Assessment was undertaken to identify subsidence impacts with high risk levels and/or potentially severe consequences. A Subsidence Risk Assessment workshop was conducted in October 2016 for Longwalls 11 to 16. The workshop was facilitated by a risk assessment specialist and attended by relevant WCPL personnel and technical specialists (Operational Risk Mentoring, 2016). The Subsidence Risk Assessment is provided as Technical Report 4 of the Extraction Plan. With the implementation of the proposed risk treatment measures, all of the potential loss scenarios were ranked “Moderate – as low as reasonably practicable” or “Low – broadly acceptable” by the risk assessment team (Operational Risk Mentoring, 2016).

7 ROLES AND RESPONSIBILITIES The key responsibilities of WCPL personnel in relation to this BFMP are specified in the component plan of this BFMP. A summary WCPL organisation structure is provided in Figure 5. Contact details for key personnel are provided in Table 4.

Table 4

BFMP Key Personnel Contact Details

Organisation Position Contact Name Phone Number

WCPL Environment and Community Manager

Steven Peart (24 hours) (02) 6570 2209 0448 082 987

Control Room (24 hours) (02) 6570 2240

General Manager Albert Scheepers (02) 6570 2330

Technical Services Manager Tim Britten

Mining Engineering Manager (Underground Mine Manager)

Murray Wood

Community Hotline (02) 6570 2245

NSW Mine Subsidence Board (MSB)

Emergency Service (24 hours) 1800 248 083

Singleton District Office – Manager

Richard Pickles (02) 6572 4344

8 REPORTING FRAMEWORK The reporting framework relevant to this BFMP is summarised in Table 5.

General Manager

ManagementAssistantIT Support

Technical ServicesManager

UndergroundMining

Engineers

ChiefMine Surveyor

CommercialManager

AssetManager

Environment& Community

Manager

Health &Safety Training

Open CutMine Manager

CHPP/RCHManager

ManagerElectrical

Engineering

ManagerMechanicalEngineering

Director Projects/NSW Portofolio

SeniorEnvironmental

Advisor

InfrastructureCoordinator

Open CutTechnical ServicesSuperintendent

UndergroundSurveyor

South BatesSenior Project

Engineer

VentilationOfficer

DevelopmentSuperintendent


WCPL Organisation Structure

Figure 5WAM-09-15_Sth Bates EP_Longwalls11-16_BFMP_002C

UndergroundProduction Clerk

OutbyeSuperintendent

LongwallSuperintendent

LEGEND

Key personnel responsible for implementation

of the Extraction Plan

EnvironmentalAdvisor

Mining EngineeringManager

(Underground Mine Manager)



Table 5 Summary of Reporting Framework

Report Frequency Distribution1 Distribution Method1

Responsibility for Data Collation and Preparation

Responsibility for Submission

Subsidence Management Status Report

To be updated fortnightly.

Must be submitted if new impacts are identified or upon request.

DP&E (Manager, Mining Projects)

DRE (Subsidence Executive Officer)

Email Technical Services Manager

Environment and Community Manager

Technical Services Manager

(in consultation with Mining Engineering Manager and

Environment and Community Manager)

Six Monthly Report

Annual (for the period 1 January to 30 June)



MSB (District Manager)

OEH/EPA (General Contact)

DPI Water (Manager Strategic Stakeholder Liaison)

Email Environment and Community Manager

General Manager

Annual Review

Annual (for the period 1 January to 31 December)



DRE (Director – Environmental Sustainability)

MSB (District Manager)

OEH/EPA (General Contact)

DPI Water (Manager Strategic Stakeholder Liaison)

Singleton Shire Council (General Manager)

CCC Members

Email and Post

Environment and Community Manager

General Manager

1 Distribution details are provided in Attachment 4 of the Extraction Plan.

Notes: DP&E – NSW Department of Planning and Environment.

DRE – NSW Division of Resources and Energy.

MSB – Mine Subsidence Board.

OEH/EPA – NSW Office of Environment and Heritage/NSW Environment Protection Authority.

DPI Water – Department of Primary Industries Water.

CCC – Community Consultative Committee.



9 MANAGEMENT PLAN REVIEW This BFMP and its component plan would be reviewed in detail, and revised if necessary, in the following circumstances: • within three months of the submission of an Incident Report relating to a subsidence impact,

(Section 4.2.1 of the Extraction Plan) taking into consideration any contingency response implemented following submission of the Incident Report (Section 4.2.1 of the Extraction Plan); and/or

• where there is a significant change in operation that may affect the environment or the community.

In addition to the above, this BFMP would also be reviewed within three months of: • the submission of an Annual Review;

• the submission of an audit report; or

• any modification to the conditions of the Development Consent (DA 305-7-2003).

10 REFERENCES

Mine Subsidence Engineering Consultants (2017) South Bates Underground Mine Subsidence Assessment – Subsidence Predictions and Impact Assessments for the Natural and Built Features in Support of the Extraction Plan for WYLW11 to WYLW13 in the Whybrow Seam and WMLW14 to WMLW16 in the Wambo Seam. Report prepared for Wambo Coal Pty Limited.

Operational Risk Mentoring (2016) South Bates Underground Mine – Longwalls 11 to 16 Subsidence Risk Assessment Report. Report prepared for Wambo Coal Pty Limited.

Wambo Coal Pty Limited (2003) Wambo Development Project Environmental Impact Statement.

Wambo Coal Pty Limited (2015) South Bates (Wambo Seam) Underground Mine Modification Environmental Assessment.


BFMP LW11-16 Rev C January 2017

ATTACHMENT 1

WCPL ASSET MANAGEMENT PLAN LONGWALLS 11 – 16

INTERNAL MANAGEMENT PLAN

REFER TO SUMMARY IN EXTRACTION PLAN

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WAMBO COAL PTY LIMITED · 1 introduction 1 1.1 purpose and scope 1 1.2 abbreviations and acronyms 3...

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