NORTH WAMBO UNDERGROUND MINE EXTRACTION PLAN …...EXTRACTION PLAN LONGWALLS 8 TO 10A NORTH WAMBO UNDERGROUND MINE REPORT 4 SUBSIDENCE RISKASSESSMENT. ... North Wambo Underground Mine

WAMBO COAL PTY LTD

EXTRACTION PLAN

LONGWALLS 8 TO 10A

EXTRACTION PLAN

LONGWALLS 8 TO 10A

NORTH WAMBO UNDERGROUND MINE

REPORT 4

SUBSIDENCE RISK ASSESSMENT

Operational Risk Mentoring (Salbury Pty Ltd T/A) ABN 56 077 700 077 12 Rhyana Court, Dubbo, NSW, 2830 Ph (+61) 0417 419 709 Email [email protected]

For Wambo Coal Pty Ltd

North Wambo Underground Mine – Longwalls 8 to 10A Subsidence Risk Assessment - REPORT

Report Title: North Wambo Underground Mine – Longwalls 8 to 10A Subsidence Risk Assessment Report

Client: Troy Favell, Environment and Community Manager

By: Peter Standish, Director and Principal Consultant Team Session: 30th October 2014 Job: ORMJ1408 Revision: V2 Date: 1st April 2015

WLWambo Coal Longwalls 8 to

ORMJ1408

DOCUMEN

Ref No.

Title

General De

Key SupporDocumenta

Rev

0 18

1 16

2 0

o 10A Subside

NT DISTRIBU

escription

rting ation

Date

8/12/2014

6/02/2015

1/04/2015

No 1 W

2 Re

3 Op

ence Risk Asse

UTION AND

ORMJ14 North WAssessm

This repstudy cassessmsubsiden

AS/NZS MDG101EDG17 –DevelopStandishSubsidenWambo StatemeWambo of EnviroWambo EnvironmWambo Modifica

Draft report

Finalised rep

Revised to inof Longwall 1

ambo Coal Pt

esource Strate

perational Ris

essment

Ver 2,

D CONTROL

408

Wambo Underment Report

port summariconducted int

ments. It revience due to mi

ISO 31000: 2010 – Minerals– Guideline fopment Consenh, Reardon ence Risk Asses

Coal Pty Lient (2003).

Coal Pty Limonmental Effe

Coal Pty Limmental Assess

Coal Pty Limation Environm

Descr

issued for clie

port with team

ncorporate sho10A

Distributio

Userty Ltd

egies

k Mentoring

01/04/2015

ground (NWU

ses the resulto the NWUews the varioning Longwal

009 Risk Mana Industry Safer Applications

nt DA 305-7-20et al – Northssment Repormited – Wam

ited – Wamboects (2005).

mited – Wambsment (2012).

mited – Wambmental Assess

Versions

ription

ent and team

m comments i

ortened comm

on List of Lat

U) Mine Longw

lts and recomU Longwalls ous aspects als 8 to 10A inc

agement – Priety and Healths for Subsiden003. h Wambo Unrt (2014). mbo Develop

o Seam Unde

bo North Wa. bo North Wamsment (2014).

review

ncluded

mencing end

est Version

walls 8 to 10A

mmended foll8, 9, 10 an

nd impacts oclusive.

inciples and Gh Risk Managence Managem

nderground M

pment Projec

rground Mine

mbo Undergr

mbo Undergro.

Created

P Stand

P Stand

P Stand

Position Troy Favel

Joanna Webs

Records

Subsidence R

low up actionnd 10A subsf the potenti

Guidelines. ement Guidelient Approvals

Mine Longwa

ct Environme

e Modification

round Mine M

ound Mine Lo

d By

dish

dish

dish

ll

ster

Pg 1

Risk

ns from the sidence risk al effects of

ine. s.

alls 7 to 10

ntal Impact

n Statement

Modification

ongwall 10A

Checked

J Webster

J Webster

J Webster


ORMJ1408

TABLE OF C 1 EXEC

1.1 2 DEFIN3 INTRO

3.1 3.2 3.3 3.4 3.5

4 ESTA4.1 4.2 4.3

5 METH5.1

6 IDENT6.1 6.2 6.3 6.4

7 ANAL7.1 7.2

8 ASSE8.1 8.2

9 TREA9.1

10 MONI10.1 10.2 10.3 10.4

11 REFE12 APPE

12.1 12.2 12.3 12.4

o 10A Subside

CONTENTS

ECUTIVE SUMConsolidate

FINITIONS ......RODUCTION

Objectives aClient .........Scope .........External FacThe Team ...

TABLISH THEProject ContRisk ManageKey Assump

THOD .............Key Steps ...

NTIFYING HABackgroundBrain WritinModified HAStatute and

ALYSE RISK ..PrioritisatioReferred Iss

SESS RISK ....Risk AcceptaRisk Ranking

EAT RISKS .....Risk Treatm

NITOR AND RNominated ImplementaCommunicaConcluding

FERENCES ....PENDICES .....

Risk TreatmSystems AppRisk RankingAbout Your

ence Risk Asse

UMMARY .......d Action Plan

........................N ....................and Deliverab............................................

cilitation ...............................

E CONTEXTtext................ement and Or

ptions .....................................

......................HAZARDS AN

Analysis of Dng ...................AZOP ..............Guideline Cro

.....................n ....................

sues .......................................

ability and Risg ....................

........................ent Plan ........

REVIEW ......Coordinator ..

ation Review Ption and ConsRemarks ........

...............................................

ent Plan ........proach to Riskg Tables .........Report ..........

essment

Ver 2,

............................................

.......................

.......................les .........................................................................................................

T ..........................................rganisational C......................

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ND ISSUES ..Documents .....

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......................oss Map .........

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.......................sk Criteria ............................

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.............................................Plan ...............sultation..............................

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.............................................k Treatment ..............................................

01/04/2015

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Pg 2

..................... 4................... 5

..................... 8

................... 10................. 10................. 10................. 10................. 10................. 11

................. 11................. 11................. 12................. 16................ 17................. 17

................... 17................. 17................. 17................. 18................. 18

................... 19................. 19................. 21

................... 22................. 22................. 22

................... 22................. 23

................... 23................. 23................. 23................. 23................. 23

................... 24

................... 25................. 26................. 46................. 48................. 50

4

8 0 0 0 0 0

1

6 7 7 7 7 7 8 8 9 9

2

2

3

4 5 6 6 8 0


ORMJ1408

List of TablesTable 1: ConTable 2: TeamTable 3: PerfTable 4: PrioTable 5: RefeTable 6: Risk Table 7: QuaTable 8: QuaTable 9: QuaTable 10: Ris List of FigureFigure 1: WaFigure 2: AerFigure 3: AerFigure 4: RiskFigure 5: WhFigure 6: Hie

o 10A Subside

s solidated Actim Members ..formance Mearity Issues .....

erred Issues ...Treatment Pllitative Measulitative Measuntitative Mea

sk Ranking Tab

es mbo Coal Min

rial Photograprial Photograpk Criteria "ALA

heel of Safe Prrarchy of Con

ence Risk Asse

ion Plan ...............................asures ........................................................lan .................ures of Likelihures of Conse

asures of Maxble..................

ne Collective Gph of Longwalph of Revised ARP" ..............roduction .......ntrol ...............

essment

Ver 2,

......................

......................

......................

......................

......................

......................hood ..............equence .........imum Reason......................

General Arranls 8 to 10A CoLongwalls 8 to..................................................................

01/04/2015

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......................nable Consequ......................

ngement ........onsidered in tho 10A Layout..................................................................

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......................uence to Asse......................

......................he October 20........................................................................................

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......................ts/Business .........................

......................014 Workshop........................................................................................

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Pg 3

................... 5

................. 11

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................. 20

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................. 26

................. 48

................. 48

................. 48

................. 49

................. 13

................. 14

................. 15

................. 22

................. 46

................. 47

0

6 8 8 8 9

4

6 7


ORMJ1408

1 EXECU

Wambo Coalwest of Singloperated by Undergroundcommenced

A Subsidenceapproved by

An ExtractionPlanning and

Longwall 10Areport has beWambo Und

This work folcompleted in

The earlier teand Wambo quantity), arc

The team ba

• Imp• Surf• Un-• Re-a

Wam

All identifiedreasonably p

Additional reWCPL will trathe identified

Following the245 metres crisk rankings the subseque

o 10A Subside

UTIVE SUMM

l Mine is an oeton, near thWambo Coal

d Mine is a coin 2005 and i

e Managemen the Departm

n Plan for Lond Infrastructur

A has been inceen prepared erground Min

llows on fromn October 201

eam sessions South Water chaeological s

sed risk asses

pacts on the riface water imdetected chanactivation of smbo seam).

d risks have rispracticable (AL

ecommendatioack and reviewd controls.

e team workscompared to t are required ent environm

ence Risk Asse

MARY

pen cut and ue village of WPty Limited (W

omponent of tnvolves extra

nt Plan (SMP) ent of Primar

ngwalls 7 to 10re on 4 July 20

cluded within to support an

ne (noting tha

m team based 12, and Octob

identified riskDam); subsid

sites, and; imp

ssment undert

ght of way in pacts – particnges in grounsubsidence cra

sk treatment pLARP) or toler

ons were madw these action

shop, the comthe layout conas the changeental risks.

essment

Ver 2,

underground cWarkworth, Ne

WCPL), a substhe approved ction of coal b

for Longwallsry Industries –

0 at the North014.

the approvedn updated Extat extraction o

risk assessmeer 2013.

ks related to: ence impactspacts on neigh

taken in Octo

favour of sevcularly arounddwater condiacking when m

plans (Appendrable after the

de by the teamns – updating

mencing (i.e. nsidered by the in longwall l

01/04/2015

coal mining opew South Walesidiary of PeabWambo Coal by longwall m

s 1 to 6 at the – Mineral Reso

h Wambo Und

d North Wambtraction Plan aof Longwall 7 i

nts facilitated

European Her on overlying hbouring prop

ber 2014 high

eral private pd the confluentions. mining below

dix 1). These e effective imp

ms and these this Risk Asse

south-westerhe team in Octayout would

peration locates (NSW). Thebody Energy AMine. The No

mining method

North Wambources on 11 D

derground Min

bo Undergrouapplication fois complete).

d by Safe Prod

ritage items; Bstreams (Surf

perty access d

hlighted:

roperties. nce of Wambo

existing Why

risks have beeplementation

are included iessment as req

rn) end of Lontober 2014. Iresult in a red

ted approximae Wambo CoaAustralia Pty Lorth Wambo

ds from the W

bo UndergrounDecember 200

ne was approv

und Mine exter Longwalls 8

duction Solutio

Built Featuresface water imduring subside

o and Stony Cr

ybrow seam w

en assessed bof the identif

in Table 1. Thquired, and co

ngwall 10A wat is considere

duction in env

ately 15 kiloml Mine is own

Limited. The NUnderground

Wambo Seam.

nd Mine (WCP06.

ved by the De

ent. This risk ato 10A at the

ons P/L which

s (particularly pacts – qualit

ence of tracks

reeks.

workings (sittin

y the team tofied controls a

he teams undeonfirm the ad

as shortened bd that no cha

vironmental im

Pg 4

metres (km) ed and

North Wambo Mine

PL, 2006) was

epartment of

assessment e North

h were

powerlines ty and .

ng above the

o be as low as and actions.

erstood that equacy of

by nges to the

mpact and

WamLong

OR

1.1TheAct

I

A

A

A

A

A

A

A

A

mbo Coal gwalls 8 to 10A Sub

MJ1408

1 Consolidatede following table prtions were re-evalu

ID Session

A1 1

A2 1

A3 1

A4 1

A5 1

A6 1

A7 1

A8 1

sidence Risk Asses

d Action Plan resents consolidateated and additiona

Ref

IS007 Compleand 8.

IS056 Complesufficiepipelin

IS061 Reviewto the eSalvage

IS097 Establisimpact

IS066 IS094

Reviewimplicasurface

IS067 IS092

Develomeasur

IS068 Confirmseam dsufficie

IS075 CompleInrush and defollow pressur

sment

Ver 2, 01/04/

d follow up actionsal actions identified

ete proposed monit

ete monitoring of tent slack in any affees.

w implications for thedge of subsidencee and Management

sh a register of WCed by subsidence (a

w Site Water Managations of changed sue storage capacities

p an Ausgrid liaisonres well ahead of su

m surface storage cdewatering and thatent.

ete the establishmeManagement Plan watering strategy fquantification of thre of water and inte

/2015

s identified during tduring each risk as

Table 1

Description

toring bore installa

he fixed points andected mine dewater

he identified scarrede in accordance witht Programme.

PL items which couadd to services plan

gement Plan to consurface relative leves.

n process to develoubsidence effects b

apacity to take watt the installed infra

ent of the inrush cofor adjacent Wamb

for the old workingshe risks with knownegrity of the barrier

he risk assessmentssessment worksho

: Consolidated Ac

tion over LWs 7

provision of ring discharge

d tree proximate h the approved

uld potentially be n).

sider the els (RLs) and

op mitigation being experienced.

ter from Whybrow structure will be

ontrol zone in the bo seam workings s. [This should

n quantities and r.]

Pg 5

workshops conducp.

ction Plan

Respo

NWU Technical SSuperintendent

WCPL Technical Coordinator

WCPL EnvironmeCommunity Man






cted in October 201

onsible

Services

Site Services

ent and nager

Services

ent and nager

Site Services

Services

Services

12, October 2013 an

Due

19/12/2012 C

30/3/2013 C

30/3/2013 CaMP

30/11/2012 CB

30/3/2013 C

30/11/2012 C

3/1/2013 C

30/3/2013 C

nd October 2014.

Comment

Complete.

Complete.

Complete - Coveredapproved Salvage aManagement Programme.

Complete - IncludedBFMP.

Complete.

Complete - in BFMP

Complete.

Complete.

d by nd

d in

P.

WamLong

OR

I

A

A

A

A

A

A

A

A

A

A

A

A


MJ1408

ID Session

A9 1

A10 1

A11 1

A12 1

A13 1

A14 2

A15 2

A16 2

A17 2

A18 2

A19 2

A20 2

sidence Risk Asses

Ref

IS076 Develobackfill

IS086 ConsideWorkshthe equnot like

IS087 Reviewworkin

IS039 IS093

Includein the B

IS095 Reviewinside t

IS100 Check p

IS100 ConsultHomes

IS105 Review

IS106 Provide

IS110 Conducstructu

IS114 Reviewunder t

IS040 Check T

sment

Ver 2, 01/04/

p an audit/monitorl project.

er getting structurahop prior to subsidiuipment held in thiely to be affected b

w the condition of thgs prior to subsidin

e communication wBFMP.

w predicted subsidethe Homestead pit predicted subsiden

t GML regarding thstead Complex Mine

w monitoring data fr

e latest geological d

ct a dam re-commisural engineering ass

w the surface water the creek (including

Telstra lines in prox

/2015

Description

ring process for the

al engineering revieing. [This should ins location and movy mining.]

he portal seals to thng.

with the Electrical En

nce and against drashell. ce for extending LW

e affects if any on te Management Plan

rom LW 5 to validat

data for review.

ssioning risk assesssessment prior to re

ponding effects frog existing reports).

ximity to LW 9 and

e Homestead

ew of Homestead nclude reviewing ement to an area

he Homestead

ngineer in Charge

ainage paths

W 9 and 10.

the Wambo n.

te existing model.

ment and e-commissioning.

om leaving a pillar

10 to verify.

Pg 6

Respo





NWU Technical SSuperintendentNWU Technical SSuperintendent







onsible

Services

Site Services

Services

Services

Services

Services

ent and nager

ent and nager

Services

Services

ent and nager

Services

Due

31/10/2012 Cfi

30/3/2013 C

30/3/2013 C

30/11/2012 CB

30/3/2013 C

30/11/2013

CtA

30/11/2013

CatC

30/11/2013

CtA

30/11/2013

Cf

At time

At time CiA

30/11/2013

Cl

Comment

Complete - Internalfortnightly status remplemented.

Complete.

Complete.

Complete - IncludedBFMP.

Complete.

Complete – includethe Subsidence Assessment.

Complete – no additional subsidenthe Wambo HomesComplex curtilage.

Complete – includethe Subsidence Assessment.

Complete – reviewefor Extraction Plan.

-

Complete – addressn the Subsidence

Assessment.

Complete – no Telstines present.

eport

d in

d in

ce in tead

d in

ed

sed

tra

WamLong

OR

I

A

A

A

A

A

A

A


MJ1408

ID Session

A21 3

A22 3

A23 3

A24 3

A25 3

A26 3

A27 3

sidence Risk Asses

Ref IS048 IS096

Confirm– with by the

IS056 ReviewLW 10A

IS068 Confirmabove overlyi

IS078 Review

IS117 IS120

Reviewactivitie

IS010 IS119

ReviewparticuLease.

IS121 Review

sment

Ver 2, 01/04/

m if there are any wbore locations (andteam of 30/10/14.

w provision of slack A. m greater intensity Longwall 8b (to addng Whybrow seam

w additional piezom

w location of LW10Aes on Wambo Cree

w monitoring bore rularly to the south n

w piezometer trigge

/2015

Description wells or bores in thed their decommissio

for discharge and o

of monitoring or otdress potential failuworking).

eter holes.

A in relation to prevk.

equirements for LWnear the boundary o

rs for Wambo Cree

e vicinity of LW10A oning) unknown

other lines over

ther strategy ure of backfill in

vious grouting

W 10A – of the Mining

ek (P109).

Pg 7

RespoNWU Technical SSuperintendent

NWU Technical SSuperintendentNWU Technical SSuperintendent





onsible Services

Services

Services

ent and nager

ent and nager

ent and nager

ent and nager

Due At time W

aIPAp

31/1/2015 C

31/1/2015 CviSP

31/1/2015 CiE

31/1/2015 Ca

31/1/2015 Ccse

31/1/2015 Ccse

Comment

Wells and bores areassessed under NWnrush Managemen

Plan and Inrush Authority to Mine process.

Complete

Complete – increasevisual monitoring ncorporated into

Subsidence MonitoProgram

Complete – addressn Attachment 2 of

Extraction Plan

Complete – outsideangle of draw.

Complete – in consideration of shortened commenend of LW 10A

Complete – in consideration of shortened commenend of LW 10A

e WU

t

ed

ring

sed

e

ncing

ncing


ORMJ1408

2 DEFIN

The following

Ter

ALARP

Aspect

BFMP

Causal Pat

GWMP

Hazard

HAZOP

Impact

Incident

Inherent/IRisk

Inspection

Instrumen

Issue

LMP

LW

NWU

NWCSRS

o 10A Subside

ITIONS

g table provid

m

“Alevga

A thcopr

Abmiman

thway

A unprdifinc

Abmim

A

MincAS

A enim

A Syoc

Initial Thco

n A ha

nt Tedoor

Is prre

AbpoPr

Ab

Ab

Ab

ence Risk Asse

des guidance o

As Low As Reavels that can b

ained.

classification ought of as m

ontamination roduces a subs

bbreviation – anagement o

mpacts to publnd surrounds.

term used to nwanted outcreventative cofferent severicident to succ

bbreviation – onitoring grou

mpacts.

thing or a situ

ethod of analcidents and pS/IEC 61882-2

result of risk nnd result of th

mpact that incl

step in the caystem requiredccurs. An incid

he risk associaontrols is take

regular checkazards and def

erm used to document whicrganisation.

used in the dorocess generaquirement, ba

bbreviation – otential enviroroject area an

bbreviation –

bbreviation –

bbreviation –

essment

Ver 2,

on terms used

sonably Practbe achieved w

of risk normamechanisms of

or loss; land csequent envir

Built Featuresbjectives and lic infrastructu

describe the ome. The flow

ontrols and incty outcomes.

cessful mitigat

Ground Wateundwater con

uation with po

lysing mining rompt for req

2003 Hazard a

normally usede realisation oludes loss of h

usal pathwayd preventativdent is NOT a

ated with an un into accoun

k of workplaceficiencies.

escribe eitherch imposes ob

ocument to dlly. An issue cackground inf

Land Manageonmental cond surrounds.

Longwall – th

North Wambo

North Wambo

01/04/2015

d throughout t

Ex

ticable”. The lwithout dispro

lly applied to f harm – or cachanges, or; faronmental “im

s Managemenperformance

ure and all cla

“flow” of evew is typically ccidents reduc A causal path

ting controls t

er Monitoring nditions and p

otential to cau

operations, pquired controlnd operability

d when considof an “aspect”habitat for wa

y which descrie controls havrisk as it shou

unwanted event.

e equipment, w

r statute, stanbligations on t

escribe any pcan be any of formation or g

ement Plan – Asequences du

e key method

o Undergroun

o Creek Subsi

this report.

xplanation

evel of risk beoportionate ex

environmentauses of loss. auna/flora cha

mpact”.

nt Plan – a doce measures to asses of other

nts beginningcauses prevened in severityhway is a causto outcome.

Program – a dpotential chan

use loss.

lant or process. Guidance oy studies (HAZ

dering environ”. For examp

ater dwelling f

bes the point ve failed or beuld not be des

nt before any

working envir

ndards, policiehe site and th

oint raised bycause, hazardgeneral point

A document oue to potentia

d of secondary

nd.

dence Respon

etween toleraxpenditure in

al matters. “ATypical aspecanges. Each o

cument to idemanage potebuilt features

from a root cnted from becy by mitigatingse to failed pr

document defges due to po

sses to identifon the methoZOP).

nmental mattele – surface wfauna and flor

at which conteen circumvenscribed as a co

y consideratio

ronment and

es or other leghe personnel f

y the team or d, incident, corelated to the

outlining the mal subsidence i

y extraction co

nse Strategy.

able and intolerelation to th

Aspects” are bcts are: surfacof these aspec

entify proposeential subsidens within the P

cause and leadcoming incideg controls whireventative co

fining an approtential subsid

fy potential cad is available

ers. Impacts awater changes ra.

trol of pathwanted when anonsequence.

n of the existi

practices, to i

gal or corporatfilling roles in

in the risk revontrol, outcome subject area

management oimpacts withi

onsidered.

Pg 8

erable he benefit

best e water cts

ed nce roject area

ding to an nts by ch lead to

ontrols to

roach to dence

auses of in

are the have an

ay is lost. n incident

ing

dentify

te the

view me (risk), a.

of n the


ORMJ1408

Ter

Personnel

Practicabl

Residual R

Review

Risk

Risk Mana

SGWRP

SWMP

WCPL

WMP

o 10A Subside

m

Invis

e Thbe

Risk Thm

Anco

Thwi

agement Thof

Ab

Ab

Ab

Ab

ence Risk Asse

cludes all peositors, consult

he extent to west practices in

he risk associaeasures is tak

n examinationomponents.

he combinatioith the likeliho

he systematic f identifying, a

bbreviation –

bbreviation –

bbreviation –

bbreviation –

essment

Ver 2,

ople working itants, project

which actions an existence an

ated with an uken into accou

n of the effect

on of the poteood of the haz

application oanalysing, asse

Surface and G

Surface Wate

Wambo Coal

Water Manag

01/04/2015

Ex

n and aroundmanagers, et

are technicallynd under oper

unwanted eveunt.

tiveness, suita

ential consequzard actually r

f managemenessing, treatin

Groundwater

er Monitoring

Pty Ltd.

gement Plan.

xplanation

the site (e.g. c.).

y feasible, in vrating circums

nt after consi

ability and effi

uences arising resulting in an

nt policies, prong and monito

Response Pla

Program.

all contractor

view of cost, cstances of the

deration of th

ciency of a sy

from a specifn unwanted ev

ocedures and oring risk.

n.

rs, sub-contra

current knowle time.

he existing con

ystem and its

fied hazard tovent.

practices to t

Pg 9

ctors,

ledge and

ntrol

ogether

the tasks


ORMJ1408

3 INTRO

3.1 ObjeThe primary

• Use• Use• Dev• Invo

(haz• Prio• Dete• Iden• Doc

3.2 ClienThe client fo

3.3 ScopOn the 30th Oparticipated was:

hi

The risk asse

• Esta• Iden

− B− M− G

(o

• Ana• Ran

This OctoberLongwall 10A

3.4 ExterThe team sescompany spe

o 10A Subside

ODUCTION

ectives and objectives of

the risk asses the risk asses

velop parametolve a cross sezard) identificoritise identifieermine the crntify recommecument the pr

nt r the risk asse

pe October 2014,in a facilitated

“To conduct aigh-risk levels

m

essment works

ablishing the cntifying risks vBrain storminModified hazaGap analysis a(DA-305-7-20of EDG17 – Gu

alysis of identinking of the ris

r 2014 risk assA in addition t

rnal Facilitassion on 30 Oecialising in ris

ence Risk Asse

Deliverablethis risk asses

ssment to idessment as inpters for inclusection of WCPation processed issues; riticality of conended actionsrocess and the

essment is Tro

, a team consid risk assessm

a risk assessmand/or poten

measures are a

shop included

context includvia a number og; ard and operaagainst the su03) and the feuideline for Afied risks and

sks, including

sessment teamto Longwalls 8

ation ctober 2014 wsk assessment

essment

Ver 2,

es ssment were t

ntify items tout into the prion in other m

PL, subject mas;

ntrols; s for follow upe results.

oy Favell, WCP

isting of WCPment worksho

ment with an entially severe capplied such t

d:

ding review ofof Risk Manag

ability analysisbsidence imp

eatures that mpplications fo nomination oconsideration

m studied and8 to 10 which

was facilitatedt and risk man

01/04/2015

to:

be addressedreparation of tmanagement p

tter experts, d

p; and

PL Environmen

L technical anp on Longwal

emphasis on idconsequencesthat the residu

f supporting ingement techn

s; and pact performamay be affecteor Subsidence of key potentin of mitigation

d extended exhad not been

d by Dr Peter Snagement pro

d in the Extracthe Extractionplans; decision make

nt and Comm

nd environmenls 8 to 10A inc

dentifying thos. To confirm ual risk rankin

nformation aniques, includi

nce measuresed by undergrManagement

ial environmen measures.

isting conside fully conside

Standish of Oocesses.

ction Plan (ann Plan for Long

ers and key st

unity Manage

ntal staff and clusive. The s

ose subsidencethat adequate

ng is tolerable

nd objectives; ng:

s in the Develoround coal mit Approvals.

ental issues; an

erations to incred by earlier

perational Ris

d related plangwalls 8 to 10

akeholders in

er.

specialist conscope of the w

e impacts withe risk treatme

e.”

opment Consening listed in A

nd

clude implicatr teams.

sk Mentoring –

Pg 10

ns); 0A;

n the issue

nsultants workshop

h ent

ent Appendix B

ions of

– a


ORMJ1408

3.5 The TThe first teamorder to takerelating to LoA second tea(Longwalls 9 A third team(Longwall 10qualification

Name

Peter Standish

Michael Millg

Troy Favell

Tim Britten

Mal Walker

James Barbato

Noel Merrick

Darrell Rigby

Joanna Webst

Team membmembers ref

4 ESTAB

4.1 ProjeThe North Wof Peabody EWambo CoalA Subsidenceapproved by

o 10A Subside

Team m met on 10 Oe advantage oongwalls 7 andam met on 2 O

and 10). met on 30 Oc

0A). Details of s and experie

h OperatioMentorFacilitat

ate WCPL – TechnicSuperintWCPL – and ComManageWCPL – DirectorWamboWCPL – Surveyo

o Subside

HeritageDirector

RPS AusPacific –Archaeo

ter ResourcProject

er “goals” weflecting on the

BLISH THE CO

ect ContextWambo Underg

Energy Austral Mine (refer te Managemen the Departm

ence Risk Asse

October 2012of an approprid 8.

October 2013

ctober 2014 athe team mence is include

Role onal Risk ing –

tor

NWU al Services tendent Environment

mmunity er

Project r South

o Underground Chief

or nce Engineer

e Computing – r

stralia Asia – ologist ce Strategies – Manager

ere used to coese goals tow

ONTEXT

t ground Mine lia Pty Limitedto Figure 1) annt Plan (SMP) ent of Primar

essment

Ver 2,

at the WCPLate mix of ski

at the WCPL s

at the WCPL simbers presen

ed in Table 2.

Table

QuPhD, B Eng (Trained. CerManager; 33and open cumanagerial aexperience. assessmentsB Survey, Reyears indust

B Sc (Ecologexperience a

B Sc (Geol), Mine Strata over 20 yearB Survey, Sta30 years indB Eng (Civil),subsidence ePhD (GroundData Proc, M(Physics), Grindustry expB Arts (Archyears archae

B Eng (Env); managemenindustry.

nfirm that initards the end o

is a longwall cd. The North nd commencefor Longwalls

ry Industries –

01/04/2015

site, near Singlls and experi

site to identify

ite to identifynt during the l

2: Team Me

alifications and(Hon), Dip Bus Mrtificate of Com3 years experieut mining operaand contract mInvolved in fac

s for 15 years.egistered Mine try experience.

y & Botany), ovat the Wambo

M Eng (GeotecControl and Ve

rs industry expeatutory Surveyoustry experienc,10 years experengineer. dwater Manage

MSc (Research Grad Course in Hperience. aeology & Palaeological exper

5 years experient and project a

tial expectatioof the session

coal mining opWambo Unde

ed in 2005. s 1 to 6 at the – Mineral Reso

gleton, NSW. ence to ident

y issues relati

issues relatinatest risk asse

embers

d Experience Mgt, Risk Analy

mpetence as a nce in undergro

ations with opemanagement

ilitating risk

Surveyor; over

ver 5 years Coal Mine.

h), Diploma in entilation, VO's erience. ors Registrationce. rience as a

ement), Grad DGeophysics), BSydrology; 40 ye

eontology); oveience.

ence environmapprovals in res

ons of the tean.

peration owneerground Min

North Wambources on 11 D

A team-basedify potential lo

ng to subsequ

ng to additionaessment work

10/1ysis

ound rating,

✓

10 ✓

✓

Coal ticket;

✓

n, over

✓

Dip Sc ears

✓

er 10 ✓

ental source

✓

m session we

ed and operate is a compon

bo UndergrounDecember 200

d approach woss scenarios/

uent longwall

al longwall mikshop and the

10/12 2/10/1✓

✓ ✓

✓ ✓

✓

✓ ✓

✓ ✓

✓ ✓

✓ ✓

ere met – with

ted by WCPL, nent of the ap

nd Mine (WCP06.

Pg 11

as utilised in /issues

mining

ining eir relevant

13 30/10/14✓

✓

✓

✓

✓

In absentia

✓

✓

✓

h the team

a subsidiary pproved

PL, 2006) was


ORMJ1408

Extraction of

An extractionExtraction Pl

Extraction ofExtraction of

This risk asseinclusive at t

More informwww.peabodFollowing the245 metres cthe worksho

It is considerreduction in

4.2 Risk The developmsubsidence r

Wollo

Wolle

WarkWoo

WhitBlakeWooBox W

WamComp

All bu

Publi

The extractio1. Risk2. Extr3. Nor4. Extr5. Risk6. Rev7. Risk8. Rev

o 10A Subside

f Longwalls 1 t

n Plan for Lonan was appro

f Longwall 7 wf Longwall 9 w

essment reporthe North Wam

mation on the dyenergy.come team workscompared to tp is provided

red that no chenvironment

Managemement consent

risks posed by

Feature

ombi Brook

emi National

kworth Sands dland Commu

e Box, Yellowely’s Red Gumdland/Grassy Woodland Com

mbo Homesteaplex

uilt features

c Safety

on plan reviewk Assessment raction Plan forth Wambo Unraction Plan fok assessment ivise Extractionk assessment ivise Extraction

ence Risk Asse

to 7 is comple

ngwalls 7 to 10oved by the NS

was completedwas completed

rt has been prmbo Undergro

mine and its om.au. shop, the comthe layout conin Figure 2 an

anges to the al impact and

ent and Orgt outlines a ra mining. Thes

NCr

Park NN

unity MN

Box, m,

White mmunity

MN

ad Nb

ASsDr

N

w process invofor Longwalls

or Longwalls 7nderground Mor Longwalls 7including Long

n Plan for Longincluding Long

n Plan for Long

essment

Ver 2,

ete.

0 was lodged SW Departme

d in January 2d in Decembe

repared to supound Mine.

operation can

mencing (i.e. nsidered by thnd the revised

risk rankings a the subseque

ganisationange of perfore subsidence

Table 3: P

Negligible impControlled relrequirements

Negligible subNegligible env

Minor crackinNegligible env

Minor crackinNegligible env

Negligible impby the Heritag

Always safe.Serviceability serviceability Damage mustreplaced or fu

No additional

olved the follo 7 and 8 cond

7 and 8 approvMine Modifica7 and 8 approvgwalls 9 and 1gwalls 7 to 10gwall 10A – cogwalls 8 to 10

01/04/2015

in February 20ent of Planning

014. Extractior 2014. Extrac

pport an Extra

be found on

south-westerhe team in Octd layout is sho

are required aent environm

al Contextmance measuimpact perfo

PerformanceSubsidence

pact.ease of exces.

bsidence impavironmental c

ng and pondinvironmental c

ng and pondinvironmental c

pact on heritage Branch and

should be mamust be fully

t be fully repaully compensa

risk.

owing key stepducted on 10 Oved on 16 Mation for Longwved on 24 Sep10 – conducte – lodgementonducted on 3A – lodgemen

014 and subseg & Environm

on of Longwalction of Longw

action Plan ap

the company’

rn) end of Lontober 2014. Twn in Figure 3

as the change ental risks.

ures regardingrmance meas

MeasuresImpact Perfo

ss site water o

acts.onsequences

g of the land onsequences

g of the land onsequences

ge values, und/or the Minis

aintained whecompensatedirable, and m

ated.

ps: October 2012ay 2013 for Lowalls 9 and 10ptember 2013ed on the 2 Oc

in June 2014;30 October 20nt early 2015.

equently revisent on 4 July

l 8 was complwall 10 is curre

pplication for

’s website at:

ngwall 10A waThe layout con3.

in longwall la

g the potentiasures are show

ormance Meas

only in accorda

.

surface or oth.

surface or oth.

less approval ster.

erever practicad. ust be fully re

; ongwall 7; 0 was approve3 for Longwallctober 2013; ; 014; and

sed in June 202014.

leted in July 2ently underwa

Longwalls 8 to

as shortened bnsidered by th

ayout would r

al consequencwn in Table 3.

sure

ance with EPL

her impact.

her impact.

has been gra

able. Loss of

epaired or else

ed on 8 July 20 8;

Pg 12

014. This

2014. ay.

o 10A

by he team at

esult in a

ces of

L

nted

e

013;

WARKWORTH

CL 365

CL 397

ML 1572

CL 374

CCL 743

WOLLEMI NATIONAL PARK

Hunter ValleyOperations

Colliery

Hunter ValleyOperations

Mount ThorleyWarkworth

Administration Access Road(Not Constructed)

CHPP

WamboAccess Road

CHPPPortal

E 31

0 000

E 31

5 000

E 30

5 000

ML 15

94

United

ML 1594

ML 1402

LEGENDMining and Coal Lease BoundaryWCPL Owned LandRemnant Woodland Enhancement Program(RWEP) AreaExisting/Approved Surface Development AreaApproved Open Cut LimitApproved Underground DevelopmentExtraction Plan Application AreaLongwalls 8 to 10A

0 2000

MetresGRID DATUM MGA 94 ZONE 56

500

Approved MontroseWater Storage

(Not Yet Constructed)

N 6 395 000 N 6 395 000

E 31

0 000

E 31

5 000

E 30

5 000

N 6 390 000

LW 1

LW 2

LW 3

LW 4

LW 5

LW 8a

Administration Buildingsand Workshops

Product CoalConveyor

LW 6

LW 7

North Wambo Creek Diversion

Arrowfield and BowfieldUnderground Mines

North WamboUnderground Mine

Previous Alignment ofNorth Wambo Creek

LW 9

LW 10

LW8b

South Bates -Whybrow

Underground Mine

Wambo CoalTerminal

North WamboUnderground MineLongwalls 8 to 10A

Wambo HomesteadExclusion Zone

LW 10

A

Wambo SouthWater Dam

Wambo Coal MineCollective General Arrangement

FIGURE 1

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

WAM-09-15_EP LW8-10A_Risk_102B

CL 743

CCL 743

CHPP


ML 1402CL 397


LW 1

LW 2

LW 3

LW 4

LW 5

LW 6

LW 7

LW 8a

LW 9

LW 10

LW 8b

LW 10

A

CL 365

B A

D

C

D Extension

N 6 392 000

E 31

0 000

E

310 0

00

E 31

2 000

N 6 394 000N 6 394 000

E 30

8 000

E 31

2 000

E 30

8 000


0

Metres

500

LEGENDMining and Coal Lease BoundaryWCPL Owned LandRemnant Woodland Enhancement Program(RWEP) AreaExisting/Approved Surface Development AreaExisting/Approved Approved Open Cut LimitApproved Underground DevelopmentWollombi Brook Protected LandWollombi Brook Mapped Alluvium ExtentMapped Alluvium ExtentBase of Wollemi National Park EscarpmentExtraction Plan Application AreaLongwalls 8 to 10A

GRID DATUM MGA 94 ZONE 56


ML 1594

WOLLEMINATIONAL

PARK

Homestead BackfillProject Area


South Bates - WhybrowUnderground Mine

Aerial Photograph of Longwalls 8 to 10AConsidered in the October 2014Workshop

FIGURE 2

WAM-09-15_EP LW8-10A_RISK_101B


CL 743

CCL 743

CHPP


ML 1402CL 397


LW 1

LW 2

LW 3

LW 4

LW 5

LW 6

LW 7

LW 8a

LW 9

LW 10

LW 8b

LW 10

A

CL 365

B A

D

C

D Extension

N 6 392 000

E 31

0 000

E

310 0

00

E 31

2 000

N 6 394 000N 6 394 000

E 30

8 000

E 31

2 000

E 30

8 000


0

Metres

500

LEGENDMining and Coal Lease BoundaryWCPL Owned LandRemnant Woodland Enhancement Program(RWEP) AreaExisting/Approved Surface Development AreaExisting/Approved Approved Open Cut LimitApproved Underground DevelopmentWollombi Brook Protected LandWollombi Brook Mapped Alluvium ExtentMapped Alluvium ExtentBase of Wollemi National Park EscarpmentExtraction Plan Application AreaLongwalls 8 to 10A

GRID DATUM MGA 94 ZONE 56


ML 1594

WOLLEMINATIONAL

PARK

Homestead BackfillProject Area


South Bates - WhybrowUnderground Mine

Aerial Photograph ofRevised Longwalls 8 to 10A

FIGURE 3

WAM-09-15_EP LW8-10A_RISK_103A



ORMJ1408

The assessm• Rele• Com• Req• Stru• Ope• Rele• Prev• Oth

4.3 Key AThe identificengineering/managemen

• TheUnd

• All Imp

• Riskcon

• Inru• No i• Wam

− −

• Rem

o 10A Subside

ent of risks haevant criteria mmunity consquirements byuctural toleranerational licenevant guidelinvious observaer relevant in

Assumptionation of key a/project decist process. Ke

risk assessmderground Mincommitments

pact Statemenk ranking wassideration of

ush Preventioninstallation ofmbo South W

Wambo Sou Re-commissmoval/disposa

ence Risk Asse

as also referredefined by staultation findin

y local and stances of man-mnses of public nes published ations/informanformation ma

ns assumptions isions. It is impoy assumption

ment relates ne only; s made in ap

nt) or controls s undertakenremediation; n and Managef new infrastru

Water Dam willuth Water Damsioning will beal of the water

essment

Ver 2,

ed to: atutory requirngs; te governmen

made surfaceutilities whichby the NSW G

ation collectedade available

s a critical parortant that ths applied duri

to the extra

pproval documcurrently allo

n on the bas

ement is still iucture (e.g. gal be re-used am will be dewe under a separ from the dam

01/04/2015

rements;

nt agencies wstructures;

h may be affecGovernment; d in the area; to the team.

rt of the risk ahese assumptiing the risk as

action of Lo

mentation (e.ocated to a wois of conseq

n place for LWas bores); fter mining;

watered (but marate review/rm and the ove

ith responsibi

cted by subsid

and

ssessment proons are valida

ssessment pro

ngwalls 8 to

.g. the Wambork stream weuences being

W 9, 10 and 10

may still have srisk assessmeerlying workin

ilities in the ar

dence in the p

ocess – forminated and revieocess were:

o 10A inclusiv

bo Developmeere taken to bg in excess o

0A;

some residuant; and

ngs will be ma

rea;

proposed min

ng the basis foewed as part o

ve at the N

ent Project Ebe “planned coof approved

l water left in

anaged approp

Pg 16

ing area;

or many of the risk

orth Wambo

Environmentalontrols”; levels and in

the dam);

priately.

o

l

n


ORMJ1408

5 METH

5.1 Key SThe key step

1. Back2. Faci

Menand

3. Facia. b. c. d. e.

f.

g. h. i. j.

4. Com5. Fina6. Upd

a. b. c.

d.

6 IDENT

6.1 BackThe various dcontrols iden

6.2 BrainBrain writingintended to pprocess invo

1. Quie2. Grou

refin3. Key

the

o 10A Subside

OD

Steps s in the risk akground analylitation of a sc

ntoring) with dkey outcomelitation of a te

an open disc presentation brainstormi review of ea modified HA

which could cross mappi

and surface EDG17 to co

prioritisatio risk ranking

identificatio generation omplete draft realise the repordate the repor Overview of Identificatio Review and

inclusive; an Identify any

IFYING HAZA

kground Andocuments lisntified for the

n Writing g is a techniqupromote crealves: et reflection –up discussionnement of eacword associasubject.

ence Risk Asse

ssessment proyses on the sucoping sessiondecision maki

es sought; eam-based ancussion with tn by Troy Faveng (writing) toarlier Risk AsseAZOP - reviewd contribute toing to the appand sub-surfa

onfirm all itemn (of identifieof the outcom

on of planned of an action peport to AS/Nrt and issue asrt based on thf new aspects

on of aspects aupdate contr

nd y new addition

ARDS AND I

alysis of Dosted in the Ref

operation.

ue based on thtive thought a

– where indivin – with each ch issue based

ation (where r

essment

Ver 2,

ocess were: ubsidence issun (developed ing personnel

nalysis to evalthe team on “ell on the subo capture genessment stud

wing an aerial po/be affected plicable subsidace features t

ms have been ed items) – thrmes shown in (existing) and

plan to compleZS ISO 31000s a controlled e second andand impacts;

and impacts srols and risk ra

nal actions (re

SSUES

ocuments ferences secti

he work of de amongst a gro

duals write thperson in th

d on input frorelevant) to id

01/04/2015

ues and experby Resource S to discuss sco

uate and trea“what do we wsidence expeeral issues; ies; photo view ofby subsidenc

dence impact that may be afaddressed; rough a votingthe confirme

d additional coete the identif:2009 standarcopy for ongo third team re pecific to LW ankings in the

ecommendatio

ion were revie

Bono (who boup of people

heir thoughts he team takin

m other teamdentify additio

iences for theStrategies andope material,

t risks, comprwant to achievriences at Nor

f the mine to ie; performance ffected by und

g system condd risk and con

ontrols to mitified additionard for review boing use; andeviews, includ

9, 10 and 10A Risk treatme

ons).

ewed to deter

uilt on the woe. As applied b

on the subjecg a turn to re

m members whonal Issues fo

e North Wambd communicatand to confir

rising: ve” in relationrth Wambo U

identify poten

measures in tderground co

ducted by the ntrol chart; igate risk leve

al controls; by personnel;

ding:

A; nt Plan consid

rmine the nat

ork of Alex Faiby Operationa

ct onto paper ead out one ho had similarr the register

bo Undergrouted to Operatm the risk ana

n to the analysnderground M

ntial surface fe

the Developmal mining in A

team;

els to a tolerab

dering LW 8 to

ture of specific

ickney Osbornal Risk Mento

or card(s); of their issuer items on thebased on con

Pg 17

nd Mine; ional Risk alysis process

sis; Mine;

eatures

ment Consent Appendix B of

ble state; and

o 10A

c threats and

ne) and is ring, the

es – and theneir list; and nnection with

n

h


ORMJ1408

6.3 ModAn aerial phoconnected wrisk register f

6.4 StatuThe main gui

• Sub• Surf

EDG

These documissues (hazar

o 10A Subside

dified HAZOotograph of th

with the varioufrom the team

ute and Guiidance informsidence impaface and sub-s

G17 – Guidelin

ments providerds or controls

ence Risk Asse

OP he mine was uus aspects of pm session (sho

ideline Crosmation conside

ct performansurface featurne for Applica

ed a range of ps) for conside

essment

Ver 2,

used to identifpotential harmown in Table 6

ss Map ered comprisece measures ires that may btions for Subs

points which wration.

01/04/2015

fy potential sum. The outpu6).

ed: in the Developbe affected bysidence Mana

were consider

ubsidence impt from this pro

pment Conseny undergroundgement Appr

red by the tea

pacts – with kocess was add

nt (DA 305-7-d coal mining ovals.

am and used t

key word promded to the ove

2003); and listed in Appe

o generate ad

Pg 18

mpts er-arching

endix B of

dditional


ORMJ1408

7 ANALY

Analysis of idorganisation the event ocRisk analysis likelihood of

The element

1. Conprev

2. Idenincid

3. Deteoppimpetc.)

4. Detemitiprod

5. Estimmat

6. IdenThis techniqunot scored –

• Uncmisof ri

• Beinfunccominst

• Beinassi

Priority issue

7.1 PriorThe key potenumber of “vBased on Opimplicated inthe losses arSome 10% ofallocate agai

1 This division

team genera

o 10A Subside

YSE RISK

dentified issueor the import

curring with ainvolves detethat event oc

ts of risk level sider the causventative contntify existing mdent; ermine the coortunity. Whacted (e.g. ou); ermine the likgating controduct of the prmate the leverix; and

ntify and consue was appliewhich flows f

certainty – if tleading, and tisk; ng Control Rectioning are id

mbination of thant in time – ng Undefined gned.

es identified b

ritisation ential hazards/votes” to alloc

perational Riskn losses againsise as a resultf the total numnst the variou

is more pronouncelly acknowledged th

ence Risk Asse

es requires thtance of the pand without cermining the cccurring. The r

L

determinatiosal pathway –trols in place tmitigating con

onsequences oere appropria

utcome is relat

kelihood of theols for a negat

obability of thel of risk of an

ider any unced to reach thefrom guidancehe causal pat

the matter sho

lated – wheredentified. In the probabilitywhich is rarel– where a cau

by the team ar

/issues were icate to what tk Mentoring’s st the numbert of 10% of thember of pointus individual p

d than that determhat the items given

essment

Ver 2,

e stakeholderpotential contontrols in plac

consequencesresult is a “lev

Level of Risk =

on are as follow– the balance bto prevent the

ntrol strategie

of the outcomate, the causated to harmin

e outcome beive consequenhe event occuoutcome by c

ertainties in the risk scores se including: hway cannot ould be referr

e an issue suchthis case it is iy of the controy assessable iusal pathway

re shown in Ta

identified throthey considerreview of fat

r identified in e issues (root ts raised werepoints.

ined by Vilfredo Papriority in the proc

01/04/2015

rs to determintrol. Risk is thce. s or impact of vel of risk” def

= Consequenc

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me reached byl pathway con

ng people, nat

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combining the

he estimates, vhown in Table

be clearly desred as an actio

h as failing to mpossible to ol failing AND n a team envihas no clear o

able 4.

ough a “votinged to be the kality and incidpredictive ancauses etc.)1.

e then issued t

reto in 1906 - and tcess plausibly repre

ne the risk thae product of t

a potential evfined by the f

ce x Likelihood

intensity and oming incidenthat act to mi

y the causal pansidered shoutural environm

– giving balance opportunityoverall expos

e consequenc

validate thesee 6. Note tha

scribed – any on to the Clien

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ironment; andoutcome, and

g” system whkey hazards/isdent data, comnalyses, a divis. to the team m

the taxonomy of thisented the vast maj

at the identifiethe conseque

vent occurringollowing.

d

frequency of nts; nimise negati

athway – withuld identify thement, propert

ce to the causy occurring. Lsure to the eve and likeliho

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estimation ofnt to more cle

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athway being d

d so no meanin

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members as “v

is difference has nojority of the potent

ed threat posence and the li

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h a negative ime dimension uy, process con

se, preventatiikelihood is deent;

ood rankings u

opriate. tances the risk

f risk levels woearly determin

etection systemk score , as it r“traversed” a

ngful risk scor

members were

umber of roois indicated. T

votes” which t

ot been researched tial risk/reward in th

Pg 19

es to the ikelihood of

ion with the

and the

from an

mpact or an upon which is ntinuity,

ve and efined as the

using the risk

k levels were

ould be ne the level

m not requires the t the same

re can be

e assigned a

t causes That is 90% of

they could

at this stage. The he subject area.


ORMJ1408

The results oincluded. Thiof risk is sum

Ref

IS112 Popr

IS121 Enar

IS078 Fagr

IS116 Po

IS120 Pore

IS002 EnStim

IS009 Rere8

IS014 Relopa

IS022 (Tdu10

IS039/ IS093

Su10

IS083 Erim

IS099 Fa

IS118 Po

IS024 A re

IS026 Mve

IS048/ IS096

StU

IS061 M

IS068 Infrw

IS076 Fahide

IS110 W

o 10A Subside

of this output is provided a

mmarised in th

otential subsidroperties.

nvironmental/rea with Stony

ailure of the mroundwater sy

otential for ch

otential for LWepairs to Wam

nvironmental tony Creek (in

mpacts associa

educed base fesulting from ato 10A (predo

educed grounowering of thearticularly con

Temporary) Loue to fracturin0A.

ubsidence imp0A (in particul

rosion and geompacts.

ailure to gain

otential fractu

change in flooesulting from t

Mine subsidencegetation of S

tructural damnited Mine ga

Mine subsidenc

nteraction of Wactured zone

working and po

ailure of tiministoric Homeselays in produ

Wambo South

ence Risk Asse

are shown in method for th

he Risk Treatm

dence effects

/subsidence imy Creek and th

monitoring proystem.

hanges in align

W 10A to reacmbo Creek ove

consequencencluding changated with the

flow to Wamba lowering of ominantly LW

ndwater user ae water table ansidering the n

oss of capacityng to the wate

pacts to WCPLlar the Wamb

omorphologic

approval of th

uring in sandst

od regimes orthe extraction

ce impacts duStony Creek re

age to wells aas bores).

ce impacts on

Wambo Seamresulting in in

otentially into

ng or effectivetead working

uction while th

Water Dam –

essment

Ver 2,

Table 4, ordehe team to ide

ment Plan in A

Table

Process/Issu

on the right-o

mpacts on Wahe potential fo

ogram to dete

nment of Wam

ctivate subsideer Whybrow w

es associated wges to channeextraction of

bo Creek (alsothe water tab

W 10A).

access to hardassociated witnear neighbou

y of water stoer storage floo

L powerlines rbo South Wate

cal impacts on

he Extraction

tone outcrops

r extent of pon of LWs 8 to

ue to the extraesulting in env

and bores clos

n items of kno

fractured zonncreased wate the Wambo s

eness of Homes in the Whybhe project is c

– potential imp

01/04/2015

red by descenentify and sor

Appendix 1.

e 4: Priority I

ue/Activity

of-way (road)

ambo Creek (ior erosion).

ect and respon

mbo and Ston

ence cracking workings pane

with water floel stability) res

LWs 8 to 10A

o known as Soble associated

d rock groundth the extractur effects.

rage in the Wors resulting f

resulting fromer Dam power

n North Wamb

Plan resulting

s adjacent to

tential inunda10A.

action of LWs vironmental co

se to the mine

wn Aborigina

ne with overlyer make in theseam undergr

estead backfilbrow Seam). Rcompleted.

pact on the in

nding vote fret initial conce

Issues

in favour of s

in particular t

nd to an impa

y Creeks abov

which requireel 9 and 9A.

ow and qualitysulting from su

A.

uth Wambo Cd with the extr

water supply tion of LWs 8 t

Wambo South Wfrom extractio

m the extractiorlines).

bo Creek abov

g in productio

Wollombi Bro

ation due to s

8 to 10A on ronsequences.

e footprint (in

l heritage.

ying Whybrowe overlying Wround working

l project (grouRanked on the

tegrity of the

equency with terns at an earl

several private

he confluence

act on the

ve LW 10A.

ed historic

y changes in ubsidence

Creek)raction of LWs

due to a to 10A -

Water Dam on of LWs 8 to

on of LWs 8 to

ve predicted

n delays.

ook.

ubsidence

iparian .

cluding old

w Seam hybrow gs.

uting of e basis of

dam wall.

the nominatey stage. The r

Votes

e 5 C

e 5 S

4 G

4 S

4 S

2 S

s 2 S

2 G

o 2 S

o 2 B

2 S

2 B

2 L

1 S

1 F

1 In

1 H

1 G

1 B

1 In

Pg 20

d aspect arearesulting level

Aspect Type

Community

Surface Water

Groundwater

Surface Water

Surface Water

Surface Water

Surface Water

Groundwater

Surface Water

Business

Surface Water

Business

Land/Heritage

Surface Water

Flora/Fauna

nfrastructure

Heritage

Groundwater

Business

nfrastructure

a

r

r

r

r

r

r

r

e

r


ORMJ1408

Ref

IS117 Poch

IS119 Poef

7.2 RefeIssues raisedwere consideregulatory apNo specific, aidentified du

Maintain offs

Install monitWambo Cree

Implement tLWs 7 and 8.

Re-compact

Prediction ofSeam workin

Mine Subsideand impact o

Continuous iother agreem

Dam Safety Cextraction wWambo SoutTailings Dam

o 10A Subside

otential for inhanges in dow

otential for imffects from de

erred Issues during the ris

ered to be ‘repproval issuesadditional, ref

uring previous

Description

set from Woll

oring bore in ek over LW8.

rigger levels in.

or infill surfac

f height of frangs.

ence Board inon surface fea

mplementatioments with ne

Committee apithin the Notith Water Dam

m.

ence Risk Asse

creased erosiwnstream wat

mpacts on grouewatering in th

sk assessmenferred issues’s. ferred issues w risk assessme

n of Issue

lombi Brook.

the alluvium

n bores surro

ce cracking of

cturing above

nterest in ownatures and stru

on of compeneighbours.

pproval requirfication Area

m and North-E

essment

Ver 2,

Process/Issu

on in Wamboer quality.

undwater usehe Whybrow

t workshop b. Referred iss

were generateent workshop

Table

O

of North O

unding O

soil. O

e Wambo Oa

nership uctures.

Oi

nsation or O

red for of the ast

Oi

01/04/2015

ue/Activity

o and Stony Cr

ers or baseflowSeam.

rainstorming sues identified

ed during conps are shown i

5: Referred

Outside the sc

Outside the sc

Outside the sc

Outside the sc

Outside the scassessment is

Outside the scissue).

Outside the sc

Outside the scissue).

reeks resulting

w as a result o

that were outd were either

nsiderations on Table 5.

Issues

Just

cope of the ris

cope of the ris

cope of the ris

cope of the ris

cope of the risssue).

cope of the ris

cope of the ris

cope of the ris

g in potential

of drawdown

tside the scopcontrol, techn

f Longwalls 8

tification

sk assessment

sk assessment

sk assessment

sk assessment

sk assessment

sk assessment

sk assessment

sk assessment

Votes

1 S

1 G

pe of the risk anical assessm

to 10A. Refer

t (control rela

t (control rela

t (control rela

t (control rela

t (technical

t (regulatory

t (control rela

t (regulatory

Pg 21

Aspect Type

Surface Water

Groundwater

assessment ent or

rred issues

ated).

ated).

ated).

ated).

ated).

r


ORMJ1408

8 ASSES

8.1 Risk The ‘tolerabibeing propergood practicwith “As Low

The purposelevel of risk wproposed to The ALARP pacceptabilitythe level of eon the right zone if the co

8.2 Risk The risk rankoutlined in thaccount cum

9 TREAT

A systems ap1. Area2. Whe3. Sequ

Additional inSelection of cregard to theoperator traior additions

Further, the qualitatively in the contro

o 10A Subside

S RISK

Acceptabiliility’ of a risk irly controlled e is targeted t

w as Reasonab

of risk criteriwhich is accepcontrol the ri

principle, as rey of risk and toexposure to a hand side of tost of removin

Ranking king likelihoodhe Appendice

mulative impac

T RISKS

pproach to theas of interveneel of Safe Prouence of Barr

nformation is pcontrols to reeir prospectiveining efforts. Amade where t

prospective rreviewed by

ol and the abil

ence Risk Asse

ity and Riskis the willingn(HB 203:2006to reduce riskbly Achievable

a is to allow tptable or tolersk during the

epresented in o demonstraterisk. More oft

the diagram png the risk is d

d, consequences. The risk trects throughou

e treatment otion (Prevent

oduction (Neriers (Hierarchprovided in thduce the likele reliability. TAs part of thethese existing

eliability of thconsidering thity to mitigate

Intolerable Region

The ALARP Region

Broadly Acceptab(No need for detaworking to demonALARP)

essment

Ver 2,

k Criteria ess to live wit

6 – Environmek to “As Low ase” (ALARA).

he organisatiorable. In esserisk assessmethe diagram be that an orgaten this is donresented in F

disproportion

Figure 4

ces and risk meatment plan

ut all loss scen

of risks involveion, Monitori

rtney Wheel); hy of Controls)he Appendicesihood of the r

That is, installe process, exisg controls are

he controls ideheir position oe this deterior

A level o

Tolerable onlycost is gross

Toleraexc

able Region tailed onstrate

01/04/2015

th a risk to secental Risk Mans Reasonably

on to clearly dnce the risk c

ent – leading tbelow, was deanisation has dne qualitativeligure 4. A riskate to the ben

4: Risk Crite

matrix considerin Appendix 1arios.

es considerating, Mitigationand

). s. risks associateing engineerin

sting controls deemed unac

entified as issuon the hierarcration.

l of risk that cannot bgrounds.

nly if risk reduction isssly disproportionate

gained.

rable if cost of risk rexceed the improvem

Negligible Ri

cure benefits,nagement – PPracticable” (

define unacceriterion enablto the developeveloped to asdone all that ily rather thank may be consnefits gained.

ria "ALARP"

red by the tea1 shows the ri

on of three asn, Response/R

ed with the tong modificatioare assessed cceptable or i

ues were alsochy of controls

t be justified on any

is impracticable or ifate to the improveme

reduction would ment gained.

Risk

, on the underPrinciples and (ALARP). ALAR

ptable levels les the organipment of the ssist in the deis considered as a quantitasidered to be

am during theisk ranking res

spects: Recovery);

opic under revons is a superiand recommenadequate.

o reviewed. Ths, the ability t

r if its ent

1 x 10-3

1 x 10-5

rstanding thatProcess). LegRP is often int

of risk, or consation to priorisk treatmen

efinition of theto be practica

ative probabilitolerable in th

e ranking procsults. The tea

view were maior control to endations for

hese controls to detect any

Pg 22

t the risk is islation and

terchanged

nversely the oritise actions nt plan. e al in reducing ity as shown he ALARP

ess are ms took into

de with due relying on amendments

were deterioration


ORMJ1408

9.1 Risk The risk treat

10 MONI

10.1 NomThe nominatencourage aissues – comThe nominat

1. Revi2. Prov

from3. Mon

10.2 ImplIt is importanwas that:

1. Appfor c

2. Assu3. Acti

WCPL can mframework. Wunderlying h

10.3 ComCommunicatto confirm ththroughout t

10.4 ConcA significant rigour. The dbusiness by eThis outcomeOngoing revimanagemenDr Peter Stansession and r

o 10A Subside

Treatment tment plan in

TOR AND R

minated Cooted coordinatoll parties whomenting as ne

ted coordinatoiew the reporvide feedbackm team expectnitor the com

lementationnt to confirm

propriate perscompletion; umptions are ion items wouake modificatWhere a chanazard remain

municationtion and consuhat this reportthe life cycle o

cluding Remgoal of the ris

desired outcoevaluating thee was achieveiew will be net activities arendish would liresources pro

ence Risk Asse

Plan Appendix 1 s

EVIEW

ordinator or is the WCP attended theeeded. or should alsort to confirm tk to the partietations/recompletion of the

n Review Plthe controls a

sonnel would

validated; anuld be approptions to the renge is requireds tolerable is

n and Consuultation form t is shared witof the study su

marks sk assessmentme was to pre

e causal pathwed by followineeded to manae conducted aike to thank a

ovided – and o

essment

Ver 2,

shows the risk

L Environmene risk assessm

o: the accuracy os who attende

mmendationse additional ac

lan and actions id

be allocated

d riately resour

ecommended d, the basis forequired.

ultation an integral pa

th all participaubject area.

t process wasevent losses tways and deveg the risk asseage the additias required. ll personnel –

other team me

01/04/2015

k evaluation re

nt and Commuent team sess

of the materiaed the risk assraised on the

ctions to confi

entified are a

for implemen

rced and impleactions, but t

or the change

art of the risk ants involved

to identify anto people, equeloping recomessment proconal controls

– particularly Jembers who c

esults.

unity Managesion to review

al recorded frsessment on a day; and irm there is cl

ppropriately m

ntation of rec

emented. these should band a desktop

managementin the process

nd analyse theuipment, the e

mmended coness describedidentified, an

oanna Webstcontributed to

r (Troy Favell)w this report a

om the team any decisions

ose out of eac

managed. Th

commended a

be done in lighp review to as

t process. It iss and other st

e subsidence environment trols for inclu within this do

nd to ensure t

ter and Troy Fo the risk asse

). The coordinnd the identif

session; which may be

ch action.

e expectation

actions in a ti

ht of the risk mssess if the ris

s the Client’s rtakeholders as

related hazardand consequesion into an aocument. hat subseque

Favell who arressment.

Pg 23

nator should fied hazards/

e different

n of the team

mely manner

management k of the

responsibility s appropriate

ds with ential action plan.

ent risk

anged the

r


ORMJ1408

11 REFER

Department Rev 3. Department Guideline. Safe Product Safe Product Wambo Coal Wambo Coal Wambo CoalManagemen Wambo Coal Wambo Coal Wambo CoalAssessment.

o 10A Subside

RENCES

of Mineral Re

of Mineral Re

tion Solutions

tion Solutions

l Pty Limited (

l Pty Limited (

l Pty Limited (nt Plan.

l Pty Limited (

l Pty Limited (

l Pty Limited (

ence Risk Asse

esources (200

esources (201

(2012) North

(2013) North

(2003) Wamb

(2005) Wamb

(2006) Wamb

(2012) North W

(2013) North W

(2014) North W

essment

Ver 2,

3) EDG17 – G

1) MDG1010

Wambo Und

Wambo Und

o Developmen

o Seam Under

o Developmen

Wambo Unde

Wambo Unde

Wambo Unde

01/04/2015

uideline for Ap

– Minerals Ind

derground Min

derground Min

nt Project Env

rground Mine

nt Project – N

erground Mine

erground Mine

erground Mine

pplication for

dustry Safety

ne – Longwalls

ne – Longwalls

vironmental Im

e Modification

North Wambo

e Modification

e Extraction Pl

e Longwall 10A

r Subsidence M

and Health Ri

s 7 and 8 Subs

s 7 to 10 Subs

mpact Statem

n Statement of

Underground

n Environmen

lan for Longw

A Modificatio

Management A

isk Managem

sidence Risk A

sidence Risk As

ent.

f Environmen

d Mine Subside

tal Assessmen

walls 7 and 8.

on Environmen

Pg 24

Approvals.

ent

Assessment.

ssessment.

tal Effects.

ence

nt.

ntal


ORMJ1408

12 APPEN

o 10A Subside

NDICES

ence Risk Asseessment

Ver 2, 01/04/2015 Pg 25

Wambo Coal Longwalls 8 to

ORMJ1408

12.1 Risk The followinimpacts assowhere appro The table is

Ref

1. Natur

IS001

o 10A Subsidence R

k Treatment Plan

ng risk treatment plociated with Longwopriate.

ordered by Aspect

Process/Issue

ral Features

Environmental conseassociated with watequality changes in NoCreek (including chanstability) resulting froimpacts associated wextraction of LWs 8 t

Risk Assessment

Ver

n

lan was developed wall 10A were includ

group and Priority

e/Activity V

equences er flow and orth Wambo nges to channel om subsidence

with the to 10A.

r 2, 01/04/2015

during the third teaded at the end of th

.

Votes Aspect Type

- Surface Wate

am session, buildinhe table to easily as

Table

e Pl

er

Grouting of histothe Whybrow Semanagement methe Water Manaincluding the SurProgram (SWMPProgram (GWMPResponse Plan (SCreek Subsidenc[NWCSRS] [part LW10A Review: Crisk ranking chanStill ALARP.

g on updated inforssess the change (i.

6: Risk Treatmen

lanned Controls

oric Homestead workeam. Monitoring and easures in accordancegement Plan (WMP) rface Water Monitori

P), Groundwater MonP), Surface and GrounSGWRP) and North Wce Response Strategy of the SGWRP]).

Consequence increasenged from D 4 21 to D

Pg 26

mation and risk rane. adding Longwall

nt Plan

Cat

ings in

e with - ng itoring

ndwater Wambo

ed, thus D 3 17.

Env

nkings developed d10A). Changes mad

L C R

D 3 17

uring previous teamde by the third team

Actions

-

m sessions. Specificm are italicised with

By Whom/By

-

c aspects and h comments

y When


ORMJ1408

Ref

IS002

IS003

IS004

IS005

o 10A Subsidence R

Process/Issue

Environmental conseassociated with watequality changes in St(including changes tostability) resulting froimpacts associated wextraction of LWs 8 t

Environmental conseassociated with watequality changes in W(including changes tostability) resulting froimpacts associated wextraction of LWs 8 t

Induced leakage fromresulting from a lowewater table associateextraction of LWs 8 t

Induced leakage fromBrook resulting fromthe water table assocextraction of LWs 8 t(predominantly for L

Risk Assessment

Ver

e/Activity V

equences er flow and ony Creek

o channel om subsidence

with the to 10A.

equences er flow and

Wollombi Brook o channel om subsidence

with the to 10A.

m Stony Creek ering of the ed with the to 10A.

m Wollombi a lowering of ciated with the to 10A W10A).

r 2, 01/04/2015

Votes Aspect Type

2 Surface Wate

- Surface Wate

- Surface Wate

- Surface Wate

e Pl

er

Monitoring and accordance withSWMP, GWMP a(Longwalls 1 to 5significant impac LW10A Review: Bobservations conrisk ranking chan

er

Monitoring and accordance withSWMP, GWMP aagainst the perfofor Wollombi Broand implementamitigation measu LW10A Review: Crisk ranking chan

er

Monitoring and accordance withSWMP, GWMP a LW10A Review: R21 to E 4 23.

er

Monitoring and accordance withSWMP, GWMP aagainst the perfofor Wollombi Broand implementameasures. (Rankdemonstrated peLW10A Review: R21 to E 5 25.

lanned Controls

management measur the WMP (including

and SGWRP). Historic 5) observations of no ct.

Based on historical nsequence was reducenged from D 4 21 to D


and SGWRP). Assessmormance indicators deook as described in thtion of any required ures.

Consequence reducednged from E 4 23 to E


and SGWRP).

Risk ranking changed


and SGWRP). Assessmormance indicators deook as described in thtion of relevant mitig

ked according to the erformance of NW U/Risk ranking changed

Pg 27

Cat

res in the

ed, thus D 5 24.

Env

res in the

ment eveloped he WMP,

d, thus E 5 25.

Env

res in the

d from D 4

Env

res in the

ment eveloped he WMP, gation

/G). d from D 4

Env

L C R

D 5 24

E 5 25

E 4 23

E 5 25

Actions

-

-

-

-

By Whom/By

-

-

-

-

y When


ORMJ1408

Ref

IS006

IS007

IS009

IS010

o 10A Subsidence R

Process/Issue

Reduced base flow toCreek upstream of LWresulting from a lowewater table associateextraction of LWs 8 t(predominantly LW8

Induced leakage fromCreek over LW 8 duethe water table and/cracking.

Reduced base flow to(also known as Southresulting from a lowewater table associateextraction of LWs 8 t(predominantly LW1

Impacts to groundwaand/or a change in thcategory of alluvial gto a change in grounand/or quality associsubsidence due to thLWs 8 to 10A - particconsidering the near

Risk Assessment

Ver

e/Activity V

o North Wambo Ws 7 and 8 ering of the ed with the to 10A

and 9).

m North Wambo e to a lowering of /or connective

o Wambo Creek h Wambo Creek) ering of the ed with the to 10A 0A).

ater users he beneficial use roundwater due dwater level iated with

he extraction of cularly neighbour.

r 2, 01/04/2015

Votes Aspect Type

- Surface Wate

- Surface Wate

2 Surface Wate

- Groundwate

e Pl

er

Monitoring and pillar) in accordathe SWMP, GWM LW10A Review: R21 to C 5 22. Still

er

Grouting of histoLW7 and 8) in thGrouting Optionmanagement methe WMP (includSGWRP and NWC LW10A Review: R21 to D 5 24.

er Monitoring and accordance withSWMP, GWMP a

er

Monitoring and accordance withSWMP, GWMP, SMaintenance of with potentially (i.e. neighbourin

lanned Controls

management measurance with the WMP (iMP, SGWRP and NWC

Risk ranking changedl ALARP.

oric Homestead worke Whybrow Seam as s Paper. Monitoring aeasures in accordanceding the SWMP, GWMCSRS).



and SGWRP).

management measur the WMP (including SGWRP and NWCSRSexisting water agreemaffected groundwateg private landholders

Pg 28

Cat

res (LW8 ncluding

CSRS).

d from D 4

Env

ings (for per the

and e with

MP,

d from D 4

Env

res in the Env

res in the ). ments

er users s).

Env

L C R

C 5 22

D 5 24

D 4 21

D 4 21

Rr1sbL

Actions

-

-

-

Review monitoring borequirements for LW 10A - particularly to thsouth near the boundary of the MiniLease.

By Whom/By

-

-

-

ore

he

ng

WCPL EnvironmCommunity Ma(31/1/2015)

y When

ment and anager


ORMJ1408

Ref

IS011

IS014

IS016

IS018

o 10A Subsidence R

Process/Issue

Impacts to groundwaand/or a change in thcategory of the hard groundwater due to groundwater level anassociated with substhe extraction of LWsparticularly considerneighbour effects.

Reduced groundwatehard rock groundwata lowering of the watassociated with the eLWs 8 to 10A - particconsidering the near effects.

A change in land surfpreferential pathwayinfiltration resulting fto the land surface caextraction of LWs 8 t

Improved shallow groquality in the fracturLWs 8 to 10A where occurs to land surfacimpact (so not risk ra

Risk Assessment

Ver

e/Activity V

ater users he beneficial use rock a change in

nd/or quality idence due to s 8 to 10A - ing the near

er user access to ter supply due to ter table extraction of cularly neighbour

face slope and ys for rainfall from fracturing aused by the to 10A.

oundwater ed zone above fracturing

ce - a beneficial anked).

r 2, 01/04/2015

Votes Aspect Type

- Groundwate

2 Groundwate

- Groundwate

- Groundwate

e Pl

er

Monitoring and accordance withSWMP, GWMP aexisting water agaffected groundwprivate landhold

er

Monitoring and accordance withSWMP, GWMP aexisting water agaffected groundwprivate landhold LW10A Review: Iprovisions and usranking changed

er

Monitoring in acMonitoring ProgPlan (LMP). Manimpacts to land ithe LMP (e.g. rehtroughs).

er

Monitoring and accordance withmonitoring of wawith the GWMP)beneficial aspectapplied.

lanned Controls


and SGWRP). Maintengreements with potenwater users (i.e. neighers).



In consideration of mse of groundwater so

d from D 4 21 to D 5 2

ccordance with the Sugram and Land Managnagement and mitigatin general in accordanhabilitation of subside

management measur the WMP (including ater quality in accord). Believed that this ist so no risk ranking w

Pg 29

Cat

res in the

nance of ntially hbouring

Env

res in the


ake good ource, risk 24.

Env

ubsidence gement tion of nce with ence

Env

res in

ance s a as

-

L C R

D 4 21

D 5 24

C 5 22

- - -

Actions

-

-

-

-

By Whom/By

-

-

-

-

y When


ORMJ1408

Ref

IS019

IS021

IS022

IS023

o 10A Subsidence R

Process/Issue

Improved shallow hagroundwater quality alluvium resulting froinduced loss of watealluvium - a beneficiarisk ranked).

Potential subsidencenatural dams and powith the extraction o(excluding Wambo SoDam).

(Temporary) Loss of water storage in the Water Dam due to frwater storage floors extraction of LWs 8 t

Far-field subsidence resulting in rock instaWollemi National Pa

Risk Assessment

Ver

e/Activity V

ard rock beneath the

om mining r from the al impact (so not

e impacts on nds associated

of LWs 8 to 10A outh Water

capacity of Wambo South

racturing to the resulting from

to 10A.

impacts ability of the rk Escarpment

r 2, 01/04/2015

Votes Aspect Type

- Groundwate

- Surface Wate

2 Surface Wate

- Flora/Fauna

e Pl

er

Monitoring and accordance withmonitoring of wawith the GWMP)beneficial aspectapplied.

er

Monitoring in acMonitoring Progand mitigation oaccordance withsurface cracks). Dby removal of wamining. LW10A Review: R21 to C 4 18 - stil

er

Monitoring in acMonitoring ProgManagement Plamitigation of impwater storage daLMP and BFMP r LW10A Review: R21 to B 5 19 - stil

a

Monitoring and with the BiodiveLWs 7 and 8 (BMagainst performathe Wollemi Natimplementation measures.

lanned Controls

management measur the WMP (including ater quality in accord). Believed that this ist so no risk ranking w

ccordance with the Sugram and LMP. Manag

f impacts to land in g the LMP (e.g. remedDams/ground tanks mater and rehabilitatio

Risk ranking changedll ALARP.

ccordance with the Sugram, LMP and Built Fan (BFMP). Managempacts to land in generams in accordance wirespectively.


management in accorsity Management Pla

MP) including assessmance indicators develtional Park and of relevant mitigatio

Pg 30

Cat

res in

ance s a as

-

ubsidence gement general in diation of managed on post

d from D 4

Env

ubsidence eatures

ment and ral and th the

d from D 4

Bus

rdance an for ent oped for

n

Env

L C R

- - -

C 4 18

B 5 19

E 5 25

Actions

-

-

-

-

By Whom/By

-

-

-

-

y When


ORMJ1408

Ref

IS024

IS025

IS026

IS027

o 10A Subsidence R

Process/Issue

A change in flood regof potential inundatisubsidence resulting extraction of LWs 8 t

Mine subsidence impextraction of LWs 8 triparian vegetation oCreek resulting in enconsequences.

Mine subsidence impextraction of LWs 8 triparian vegetation oresulting in environmconsequences.

Mine subsidence impextraction of LWs 8 triparian vegetation oBrook resulting in enconsequences.

Risk Assessment

Ver

e/Activity V

gimes or extent on due to from the

to 10A.

pacts due to the to 10A on of North Wambo vironmental

pacts due to the to 10A on of Stony Creek mental

pacts due to the to 10A on of Wollombi vironmental

r 2, 01/04/2015

Votes Aspect Type

1 Surface Wate

- Flora/Fauna

1 Flora/Fauna

- Flora/Fauna

e Pl

er

Monitoring in acMonitoring Progand mitigation oaccordance withof subsidence trodeveloped in conimpacts observeto 5 (e.g. limitedsmall losses of wmaterial). LW10A Review: R21 to D 3 17 - sti

a Monitoring and accordance with

a Monitoring and accordance with

a

Monitoring and accordance withAssessment agaiindicators develodescribed in the relevant mitigati

lanned Controls

ccordance with the Sugram and LMP. Manag

f impacts to land in g the LMP (e.g. rehabioughs). The controls wnsideration of the limd during extraction o ponding over LWs 1

water observed in allu


management measur the BMP and WMP.

management measur the BMP and WMP.

management measur the BMP and WMP. nst the performance

oped for Wollombi BrWMP, and implemen

ion measures.

Pg 31

Cat

ubsidence gement general in

litation were

mited of LWs 1

to 5 and vial

d from D 4

Env

res in Env

res in Env

res in

rook as ntation of

Env

L C R

D 3 17

D 5 24

D 5 24

D 5 24

Actions

-

-

-

-

By Whom/By

-

-

-

-

y When


ORMJ1408

Ref

IS028

IS032

IS078

IS083

o 10A Subsidence R

Process/Issue

Subsidence impacts adisturbance due to thLWs 8 to 10A resultinhabitat for threatene(including consideratPendula).

Subsidence impacts adisturbance due to e8 to 10A resulting in of native vegetation.

Failure of the monitodetect and respond tthe groundwater sys

Erosion and geomorpimpacts on North Waabove predicted imp

Risk Assessment

Ver

e/Activity V

and surface he extraction of ng in loss of ed species tion of Acadia

and surface xtraction of LWs long-term loss

oring program to to an impact on tem.

phological ambo Creek acts.

r 2, 01/04/2015

Votes Aspect Type

- Flora/Fauna

- Flora/Fauna

4 Groundwate

2 Surface Wate

e Pl

a

Monitoring and accordance withSubsidence MonManagement anland in general in(e.g. remediation LW10A Review: Bpresence of AcacLongwall 10A, ris24 to C 4 18 - stil

a

Monitoring and with the BMP anto land in genera LW10A Review: R24 to E 5 25.

er

Documentation a(including the SWNWCSRS). Assessdevelopment of Development of readily monitoreand responsibilit

er

Grouting of histothe Whybrow SePaper. Monitorinin accordance wSWMP, GWMP, S LW10A Review: R21 to B 5 19 - stil

lanned Controls

management measur the BMP, LMP and

nitoring Program. d mitigation of impac

n accordance with then of surface cracks).

Based on the potentiacia Pendula above sk ranking changed frll ALARP.

management in accond LMP. Mitigation of al in accordance with


and execution of the WMP, GWMP, SGWRPsment of impacts durthe Extraction Plan. realistic triggers that

ed. Clear allocation ofties in the manageme

oric Homestead workeam as per Grouting Ong and management ith the WMP (includinSGWRP and NWCSRS


Pg 32

Cat

res in

cts to e LMP

al

rom D 5

Env

rdance impacts the LMP.

d from D 5

Env

WMP P and ring

t can be f roles ent plans.

Env

ings in Options measures ng the ).

d from D 4

Env

L C R

C 4 18

E 5 25

D 4 21 Rp

B 5 19

Actions

-

-

Review additional piezometer holes.

-

By Whom/By

-

-


-

y When

ment and anager


ORMJ1408

Ref

IS114

2. Public

IS067 IS092

3. Public

-

4. Farm

IS043 IS085

o 10A Subsidence R

Process/Issue

Pillar left in LW8 undWambo Creek – leadin subsidence profilechanges in ponding losurface.

c Utilities

Subsidence impacts tAusgrid powerline loLW 8 to 10A Applicatresulting from the ex8 to 10A.

c Amenities

No public amenities wthat could be potentby subsidence from tLWs 8 to 10A.

and Land Facilities

Subsidence impacts rinjury to livestock duextraction of LWs 8 t

Risk Assessment

Ver

e/Activity V

der the North ding to a change

which leads to ocations on the

to the 11 kV cated within the tion Area xtraction of LWs

were identified ially impacted the extraction of

resulting in ue to the to 10A.

r 2, 01/04/2015

Votes Aspect Type

- Land

- Infrastructur

- -

- Land

e Pl

Subsidence monBank Stability MMonitoring and with the WMP (iSGWRP and NWCponding areas - t LW10A Review: Bactions identifiedworkshop, risk raD 4 21.

re

Monitoring and accordance within consultation w Note: Powerline

Monitoring and accordance withnotification of agmining and activof agistment gracracking presentand/or livestock LW10A Review: R21 to D 5 24.

lanned Controls

itoring program. Bedonitoring Program. management in acconcluding the SWMP, CSRS).Note: There arethe location may chan

Based on completion d in the previous teamanking changed from

management measur the AABFMP to be p

with Ausgrid.

decommissioned.

-

management measur the LMP, including:

gistees of areas of lonve subsidence; and exzing from areas wher

ts a reasonable risk to.


Pg 33

Cat

and

rdance GWMP, e existing nge.

of m

B 5 19 to

Env

res in repared

-

-

res in

ngwall xclusion re surface o people

d from D 4

Bus

L C R

D 4 21

- - -

- - -

D 5 24

Actions

-

-

-

-

By Whom/By

-

-

-

-

y When


ORMJ1408

Ref

IS044

IS045

IS046

IS079

IS112

o 10A Subsidence R

Process/Issue

Mine subsidence implong-term loss of agrproductivity due to tLWs 8 to 10A.

Mine subsidence impon WCPL owned landextraction of LWs 8 t

Mine subsidence imploss of storage in farmother earthen water

Potential impacts onproperties and activibased on reputationaarising from a compl

Potential subsidenceright-of-way (road) inseveral private prope

Risk Assessment

Ver

e/Activity V

pacts resulting in ricultural he extraction of

pacts to fences d resulting from to 10A.

pacts resulting in m dams (and storages).

neighbouring ties. Ranked al damage ainant.

e effects on the n favour of erties.

r 2, 01/04/2015

Votes Aspect Type

- Land

- Business

- Business

- Community

5 Community

e Pl

Monitoring in acMonitoring Progand mitigation maccordance with

Monitoring and accordance withsubsidence impacompletion of ac

Monitoring and accordance with

y

Community liaisonotification of anoperations at CoCommittee meet LW10A Review: R15 to E 5 25.

y

Right-of-Way Manotification of laway is subject tofor entering activSubsidence monvisual). Repairs a LW10A Review: Band the measureof an incident of to be lower, thus5 19 to D 5 24.

lanned Controls

ccordance with the Sugram and LMP. Managmeasures for land in g

the LMP.

management measur the LMP. Remediatio

act on fences followinctive subsidence.

management measur the LMP.

on processes - with ny commencement of

ommunity Consultativtings.


anagement Plan inclundholder when the r

o active subsidence. Sve subsidence zone. itoring program (grou

as required.

Based on experience aes implemented, the lif this magnitude is cons risk ranking changed

Pg 34

Cat

ubsidence gement general in Bus

res in on of ng Bus

res in Bus

f mining ve

d from A 5

Rep

uding: ight-of-ignage

und and

at site ikelihood nsidered d from B

Env

L C R

E 5 25

D 4 21

D 4 21

E 5 25

D 5 24

Actions

-

-

-

-

-

By Whom/By

-

-

-

-

-

y When


ORMJ1408

Ref

5. Indust

IS035

IS039 IS093

IS040

IS048 IS096

o 10A Subsidence R

Process/Issue

trial, Commercial and

Subsidence impacts tgravel access roads aresulting from the ex8 to 10A.

Subsidence impacts tpowerlines resulting extraction of LWs 8 tparticular the WambDam powerlines).

Subsidence impacts ttelecommunication l(overhead/undergrofrom the extraction o

Structural damage toclose to the mine fooold United Mine gas

Risk Assessment

Ver

e/Activity V

d Business Establishm

to unsealed and tracks xtraction of LWs

to WCPL from the

to 10A (in bo South Water

to WCPL ines und) resulting of LWs 8 to 10A.

o wells and bores otprint (including bores).

r 2, 01/04/2015

Votes Aspect Type

ments.

- Business

2 Business

- Business

1 Infrastructur

e Pl

Monitoring and measures in accoBFMP. LW10A Review: Band the measureof an incident of to be lower, thus4 18 to D 4 21.

Monitoring, manmeasures in accoBFMP (e.g. strucof power poles wprotection settin[which are a primreduce the impa LW10A Review: R18 to E 4 23.

Monitoring, manmeasures in accoBFMP (e.g. braciwith stays).

re

Known location oAssessment of wand, dependent and seal prior toEDG01 guidelinemonitoring and dbores are assessManagement PlaMine process.

lanned Controls

management and mitordance with the LMP

Based on experience aes implemented, the lif this magnitude is cons risk ranking changed

nagement and mitigatordance with the LMPtural review of cables

with stays, inspection ngs, and installation omary mitigating contrct)].


nagement and mitigatordance with the LMPng of poles for overh

of all wells and boreswells/bores prior to ex

on conditions, decom extraction and sealin

es. Ability to re-install dewatering bores. Weed under NWU Inrushan and Inrush Author

Pg 35

Cat

tigation P and

at site ikelihood nsidered d from C

Bus

tion P and s, bracing regime,

of rollers rol to

d from C 4

Bus

tion P and ead lines Bus

. xtraction mmission ng as per

required ells and h ity to

Bus

L C R

D 4 21

E 4 23

D 4 21

D 4 21

Cwvbdu3

Actions

-

-

-

Confirm if there are awells or bores in the vicinity of LW 10A - wbore locations (and thdecommissioning) unknown by the team30/10/14.

By Whom/By

-

-

-

ny

with heir

m of

NWU TechnicServices Superintende(At time)

y When

cal

ent


ORMJ1408

Ref

IS054 IS082

IS055

IS056

IS057

o 10A Subsidence R

Process/Issue

Mine subsidence impslope instability of wemplacements (appli10).

Mine subsidence impdamage to rehabilita

Mine subsidence impmine dewatering pip

Mine subsidence improads resulting in disoperations.

Risk Assessment

Ver

e/Activity V

pacts resulting in aste rock ies to LW8 to

pacts resulting in ated areas.

pacts to WCPL peline.

pacts to haul sruption of

r 2, 01/04/2015

Votes Aspect Type

- Safety

- Flora/Fauna

- Business

- Business

e Pl

Monitoring and with the Slope StCommunication meetings and intunderground andon any access traaffected. Rankingexperience with limited impacts (exclusion zones)

a

Monitoring and with the Slope StLMP. Remediatioaccordance withManagement Pla LW10A Review: R24 to D 4 21 - sti

Monitoring and with the SubsideBFMP. Monitorinpipe lines. Continpump and pipelithe fixed points aslack in any affecdischarge pipelinnegligible water there will be no

Monitoring and with the Subsidethe BFMP. Signagbe affected. LW10A Review: Rextraction of LW

lanned Controls

management in accotability Management protocols with weeklteraction between d surface operations.acks/roads likely to bg based on operatingundermining dumps

(and implementation .

management in accotability Management on of subsidence imp the Rehabilitation

an.


management in accoence Monitoring Progng and flow monitorsnuous (SCADA) monitne conditions. Monitoand provision of sufficted mine dewateringnes There will be no tin the South Wambopumping at the time

management in accoence Monitoring Progge on any haul roads

Risk no longer relevanW 7 is complete.

Pg 36

Cat

rdance Plan.

ly

. Signage e

g with of

Per

rdance Plan and acts in

d from D 5

Env

rdance ram and on all toring of oring of cient

g o Dam so anyway.

Bus

rdance ram and likely to

nt as

-

L C R

E 3 20

D 4 21

E 5 25 Rso

- - -

Actions

-

-

Review provision of slack for discharge another lines over LW 1

-

By Whom/By

-

-

d 0A.

NWU TechnicServices Superintende(31/1/2015)

-

y When

cal

ent


ORMJ1408

Ref

IS065

IS066 IS094

IS074

IS081

o 10A Subsidence R

Process/Issue

Wambo South Waterby subsidence resultiof dirty water, delay inrush to workings.

Other water manageinfrastructure (pipelipumps and dewateridamaged by subsideparticular the WambDam water pipelines

Exploration activitiessubsidence.

Instability of the highHomestead pit as a rsubsidence impacts.

Risk Assessment

Ver

e/Activity V

r Dam damaged ing in discharge to operations or

ement nes, roads, ng bores) nce (in

bo South Water over LW10A).

s affected by

hwall in the esult of

r 2, 01/04/2015

Votes Aspect Type

- Business

- Business

- Safety

- Safety

e Pl

Monitoring and with Prescribed the BFMP. CompSafety CommitteManagement Plawater levels wheproximate. Surfawith dam capacistorage for site o

Monitoring and with the SubsideBFMP.

Communication meetings and intunderground andGround disturbavery limited surfexpected hence and consequenc

Monitoring and with the Slope StProvision of 15 maround any affecbetween high wa(appropriately en LW10A Review: Rextraction of LW

lanned Controls

management in accoDam Management Pl

pliance with all necessee approvals. Inrush an involving reductionen subsidence effectsace Water Managemeties available for wat

operations.

management in accoence Monitoring Prog

protocols with weeklteraction between d exploration personnce protocols. There

face exploration workthe relatively low likee.

management in accotability Management

metre separation barrcted highwalls. Barrieall and longwalls ngineered).


Pg 37

Cat

rdance an under sary Dam

n of dam s are ent Plan er

Bus

rdance ram and Bus

ly

nel. will be

k elihood

Per

rdance Plan.

riers er pillar

nt as

-

L C R

D 4 21

D 4 21

E 4 23

- - -

Actions

-

-

-

-

By Whom/By

-

-

-

-

y When


ORMJ1408

Ref

IS086

IS087

IS089

IS090 IS091

IS095

IS097

o 10A Subsidence R

Process/Issue

Subsidence impact oHomestead workshosubsided) resulting inincident.

Subsidence impact reof integrity of the poHomestead workings

Impact on steel-casebore holes to the Wh

Subsidence impacts oweather access road area resulting in inabcritical infrastructure

Subsidence impacts odrainage leading to fHomestead pit.

Subsidence impacts tservices lines over LWresulting in delays in

Risk Assessment

Ver

e/Activity V

n the old p (previously

n a safety

esulting in a loss ortal seals to the s.

d dewatering hybrow Seam.

on site all to southern

bility to access e.

on surface flooding in the

to active Ws 8 to 10A

production.

r 2, 01/04/2015

Votes Aspect Type

- Safety

- Safety

- Infrastructur

- Business

- Safety

- Business

e Pl

Monitoring and with the BFMP. LW10A Review: RHomestead Wor

Removal of wateprior to subsidinManagement. BaPaper. LW10A Review: Rextraction of LW

re Monitoring and with the BFMP.

Monitoring and with the BFMP, iinspections and

Inspection and mof the BFMP. Dedrainage systemdrainage paths in LW10A Review: Bconducted, risk rto D 4 21.

Monitoring and with the BFMP S

lanned Controls

management in acco

Risk no longer relevanrkshop removed.

er against the portal sg. Consideration of Inackfill as per Grouting


management in acco

management in acconcluding road signaginternal notification.

monitoring processes sign of the Homestea such that no changenside the Homestead

Based on additional sranking changed from

management in accoSite Services Plan.

Pg 38

Cat

rdance

nt as -

seals nrush g Options

nt as

-

rdance Per

rdance e, Bus

as part ad Pit s to the Pit shell.

studies m E 2 16

Per

rdance Bus

L C R

- - -

- - -

E 5 25

D 4 21

D 4 21

C 5 22

Actions

-

-

-

-

-

-

By Whom/By

-

-

-

-

-

-

y When


ORMJ1408

Ref

IS110

6. Areas

IS060

IS061

IS064

o 10A Subsidence R

Process/Issue

Wambo South Waterpotential impact on tthe dam wall.

of Archaeological an

Greater than negligibheritage values of thHomestead Complex

Mine subsidence impknown Aboriginal he

Mine subsidence impunknown Aboriginal

Risk Assessment

Ver

e/Activity V

r Dam – the integrity of

nd/or Heritage Signifi

ble impact on e Wambo

x.

pacts on items of ritage.

pacts on items of heritage.

r 2, 01/04/2015

Votes Aspect Type

1 Infrastructur

icance

- Heritage

1 Heritage

- Heritage

e Pl

re

Dams Safety Commining within thdewatering progempty when minmonitoring progon the dam wall dam wall). Note: the dam isthe preventativethe loss of the daimpact on the op LW10A Review: Bconducted and aranking changed

Monitoring and monitoring outliHomestead Comapproved by the

Salvage ProgramConsent #2222 uNational Parks adiligence undertdisturbance perminspections). MoReasonable deptimpact mitigated

Archaeological sfor LWs 8 to 10Apart of surface dsite inspections)

lanned Controls

mmittee approval reqe notification area. St

gram (so dam effectivning underneath). Subram (includes survey and visual inspection

s a re-usable asset hoe controls are not effeam will not significanperation.

Based on further woradditional longwalls, rd from C 4 18 to A 4 10

management measurned in the Wambo

mplex Mine Managem Heritage Council.

mme approved as partunder section 90 of thnd Wildlife Act 1974. aken as part of surfacmits (including site onitoring of the scarreth of cover in this ared (reduced).

urveys previously undA. Due diligence unde

isturbance permits (i.

Pg 39

Cat

quired for taged ely bsidence points

ns of the

wever if ective, tly

rk risk 0.

Bus

res and

ent Plan Env

t of he

Due ce

ed tree. a so

Env

dertaken rtaken as ncluding Env

L C R

A 4 10

D 4 21

D 4 21

D 4 21

Actions

-

-

-

-

By Whom/By

-

-

-

-

y When


ORMJ1408

Ref

IS069

IS070

IS071

o 10A Subsidence R

Process/Issue

Stud Master's CottagHomestead Complexby subsidence from L

Additional subsidencfailures over the Homworkings near the WHomestead Complex

Non-compliance withof the Heritage Counthe section 60 applic

Risk Assessment

Ver

e/Activity V

ge (Wambo x) compromised LW 7.

ce/pot hole mestead

Wambo x.

h requirements ncil approval of cation.

r 2, 01/04/2015

Votes Aspect Type

- Heritage

- Heritage

- Heritage

e Pl

Management meoutlined in the WMine ManagemeHeritage Councilstabilisation opticottage. Groutinroadways in the beneath cottagePaper. Ranking bconservative estslight structural in pillar loading). LW10A Review: Rextraction of LW

Management meoutlined in the WMine ManagemeHeritage CouncilHomestead roaddirectly beneaththe Grouting Opt LW10A Review: Cconsidered greatD 4 21 to D 3 17

Audit and reviewmeasures and mWambo HomestManagement Pla

lanned Controls

easures and monitoriWambo Homestead Cent Plan approved by, including review of ions and trenching arg of historic HomesteWhybrow Seam direc

e as per the Grouting Obased on predicted imimate of subsidence aimpact (less than 5% .


easures and monitoriWambo Homestead Cent Plan approved by. Grouting of historic

dways in the Whybrow Stud Master’s Cottagtions Paper.

Consequence of failurter, risk ranking chang- still ALARP.

w process of managemmonitoring outlined in

ead Complex Mine an.

Pg 40

Cat

ng omplex the

round the ead ctly Options

mpacts - and a increase

nt as

-

ng omplex the

w Seam ge as per

re ged from

Env

ment the Env

L C R

- - -

D 3 17

D 4 21

Actions

-

-

-

By Whom/By

-

-

-

y When


ORMJ1408

Ref

7. Items

-

8. Perma

-

9. Reside

-

10. Othe

IS068

o 10A Subsidence R

Process/Issue

of Architectural Sign

Items of architecturawere determined to the risk identified in Archaeological and/oSignificance.

anent Survey Contro

No current survey cowere identified that potentially impactedfrom the extraction o

ential Establishments

No residential establidentified that could impacted by subsideextraction of LWs 8 t

er

Interaction of Wambfractured zone with oWhybrow Seam fractresulting in increasedthe overlying Whybropotentially into the Wunderground workin

Risk Assessment

Ver

e/Activity V

nificance.

al significance be covered by 6. Areas of

or Heritage

l Marks

ontrol marks could be by subsidence

of LWs 8 to 10A.

s

ishments were be potentially nce from the

to 10A.

bo Seam overlying tured zone d water make in ow working and

Wambo seam gs.

r 2, 01/04/2015

Votes Aspect Type

- -

- -

- -

1 Groundwate

e Pl

er

Dewatering of HWhybrow Seam Management meoutlined in the In

lanned Controls

-

-

-

omestead workings iprior to extraction. easures and monitorinrush Management P

Pg 41

Cat

-

-

-

n the

ng Plan.

Bus

L C R

- - -

- - -

- - -

D 4 21

CioLpbWw

Rcd

Actions

-

-

-

Confirm greater ntensity of monitorin

or other strategy abovLongwall 8b (to addrepotential failure of backfill in overlying Whybrow seam working).

Review site storage capacity for required dewatering volumes.

By Whom/By

-

-

-

ng ve

ess NWU TechnicServices Superintende(31/1/2015).

y When

cal

ent


ORMJ1408

Ref

IS075

IS076

o 10A Subsidence R

Process/Issue

Impact on adjacent hin the Wambo Seam related to LW8B).

Failure of timing or eHomestead backfill pof historic Homesteathe Whybrow Seam)basis of delays in prothe project is comple

Risk Assessment

Ver

e/Activity V

historic workings (predominantly

effectiveness of project (grouting ad workings in . Ranked on the

oduction while eted.

r 2, 01/04/2015

Votes Aspect Type

- Safety

1 Business

e Pl

Geotechnical assWambo mine woinrush control zoPlan. Old Wambo LW10A Review: Branking changedALARP.

Project managemmonitoring/audiwith camera surv(tried and proveinstalled for earldepressurisationInstallation of sefrom Homestead LW10A Review: Hmore progressedcertainty and risk10 to D 4 21.

lanned Controls

sessment on barrier torkings and establishmone in the Inrush Mano mine workings dew

Based on team reviewd from E 5 25 to D 5 24

ment of backfilling – it process. Ability to dveys to confirm effecn technology). Piezomy detection of

n of near surface aquieals to prevent egressd workings down dip.

Homestead backfill prd, thus higher degree k ranking changed fro

Pg 42

Cat

o old ment of nagement

watered.

w, risk 4 - still

Per

ncludes drill holes tiveness

meters

fers. s of water

roject of

om A 4

Bus

L C R

D 5 24

D 4 21

Actions

-

-

By Whom/By

-

-

y When


ORMJ1408

Ref

IS084

IS098

IS099

o 10A Subsidence R

Process/Issue

Unauthorised accesssubsidence area fromway, resulting in a sa

Failure to implementExtraction Plan.

Failure to gain approExtraction Plan resultproduction delays.

Risk Assessment

Ver

e/Activity V

to the active m the right-of-afety incident.

t the approved

oval of the ting in

r 2, 01/04/2015

Votes Aspect Type

- Community

- Business

2 Business

e Pl

y

Management meSafety Managemappropriate sign Note: The intentwarnings and maa member of theresulting in an acspecified are appof road damage unknown influen LW10A Review: Band inclusion of arisk ranking was 21.

Clear allocation ofor implementingauditing processregulatory agenc

Consultation witpreparation of thIdentification of applying for the LW10A Review: Ninternal businesssubsidence risk.

lanned Controls

easures outlined in thment Plan, including

age.

t of this risk is that deanagement of affectee public still accesses ccident. The controls propriate for the levewhich is controllable

nce is human error.

Based on experience tan additional longwachanged from C 5 22

of roles and responsibg the Extraction Plan.. Regular reporting to

cies.

th regulators during he Extraction Plan. schedule of works foExtraction Plan appro

Not ranked as this is as approval risk, not a

Pg 43

Cat

he Public

spite ed roads, the area as l/severity . The

to date all, the 2 to D 4

Saf

bilities . Internal o Bus

r oval.

an

-

L C R

D 4 21

D 4 21

- - -

Actions

-

-

-

By Whom/By

-

-

-

y When


ORMJ1408

Ref

IS113

11. Intro

IS115

IS116

IS117

IS118

IS119

o 10A Subsidence R

Process/Issue

LW 10A mined beforpotentially leading toPlan not being approtime.

oduction of LW10A - S

Environmental conseassociated with increabove Longwall 10A.

Potential for changesWambo and Stony Cr10A.

Potential for increaseWambo and Stony Crin potential changes water quality.

Potential fracturing ioutcrops adjacent toBrook.

Potential for impactsgroundwater users oresult of drawdown edewatering in the W

Risk Assessment

Ver

e/Activity V

e LW8B o the Extraction oved at the right

Specific Aspects and

equences eased ponding

s in alignment of reeks above LW

ed erosion in reeks resulting in downstream

n sandstone o Wollombi

s on or baseflow as a effects from hybrow Seam.

r 2, 01/04/2015

Votes Aspect Type

- Business

Impacts

- Surface Wate

4 Surface Wate

1 Surface Wate

2 Land/Heritag

1 Groundwate

e Pl

Internal mine plaConsultation witthe Extraction Plof works for appapproval.Note: Rdelay. LW10A Review: Tproduction impliranking from D 3

er

Implement monimeasures in acco(including the SWUndertaken rem

er

Implement monimeasures in acco(including the SWUndertaken rem

er

Implement Bed aPlan. Implementmeasures in acco(including the SWUndertaken rem

ge Controlled by locdraw.

er

Monitoring and accordance withSWMP, GWMP aexisting water agaffected groundwprivate landhold

lanned Controls

an process and schedth regulators during rean. Identification of slying for Extraction P

Ranked on basis of pro

The team reviewed thications and changed 3 17 to D 4 21.

itoring and managemordance with the WMWMP, GWMP and SGW

mediation where requi



and Bank Stability Mot monitoring and manordance with the WMWMP, GWMP and SGW


cation outside of ang



Pg 44

Cat

ule. evision of schedule lan oduction

he the risk

Bus

ment MP WRP). ired.

Env

ment MP WRP). ired.

Env

onitoring nagement MP WRP). ired.

Env

le of Saf

res in the


Env

L C R

D 4 21

D 3 17

D 5 24

Not ranked in the workshop.

Covered by MSEC for

revised LW 10A

RLpaC

C 5 22

B 5 19

Rr1sL

Actions

-

-

-

Review location of LW10A in relation to previous grouting activities on Wambo Creek.

-

Review monitoring borequirements for LW 10A - particularly to thsouth near the MiningLease.

By Whom/By

-

-

-


-

ore

he g


y When

ment and anager

ment and anager


ORMJ1408

Ref

IS120

IS121

o 10A Subsidence R

Process/Issue

Potential for LW 10Asubsidence cracking historic repairs to Waover Whybrow work9A.

Environmental/subsion South Wambo Crethe confluence area wCreek and potential f

Risk Assessment

Ver

e/Activity V

A to reactivate which required ambo Creek ings panel 9 and

dence impacts eek (in particular with Stony for erosion).

r 2, 01/04/2015

Votes Aspect Type

4 Surface Wate

5 Surface Wate

e Pl

er

Implement monimeasures in acco(including the SWUndertaken remDevelop TARP cothe North WambStrategy.

er

Monitoring and accordance withSWMP, GWMP awhere required.

lanned Controls


mediation where requionsistent with approabo Creek Subsidence


and SGWRP). Remedia

Pg 45

Cat

ment MP WRP). ired. ach for Response

Env

res in the ation Env

L C R

D 5 24

RLpaC

D 5 24 RtC

Actions

Review location of LW10A in relation to previous grouting activities on Wambo Creek.

Review piezometer triggers for Wambo Creek (P109).

By Whom/By


WCPL EnvironmCommunity Manager(31/1/

y When

ment and anager

ment and

/2015)

Wambo CoLongwalls

ORMJ140

12.2 SyAreas of Controls

•

•

Wheel ofTo achievconsidere

The follo

Compete•

•

•

•

Fit For Pu• De• In• In• Re• W

sy

Controlle• Ph

oal 8 to 10A Subs

08

ystems Appintervention need to be coPrevent: Prevpreventative risk, using a dthat cause sitMitigate a Looperate in layo First Res

exampleo Restore/

incidentto a signcontinge

f Safe Producve safe produed:

wing is a gene

ent People andAppropriatelyTrained/educAdequately suHave disciplin

urpose Equipmesigned or seltroduced to scluded in mai

egularly proofWithdrawn froystem.

ed Work Envirhysical enviro

sidence Risk A

proach to Ri

onsidered throventative contcontrol is typ

different procetuations to oposs: Where myers of protecsponse: Whices are enginee/Recovery: W

t – such as limnificant incideency measure

tion (Nertneyction (centre

eral descriptio

d Safe Work Py selected andcated in the prupervised andne processes s

ment lected to meesite to confirmintenance regf tested (safetm service if s

ronment nment such a

Assessment

Ve

isk Treatme

ough their aretrols act in theically aimed aess or providi

perate as requmitigating contction such as:h react quicklered crash dev

Where the coniting a fatal acnt. Mitigating

es.

y Wheel) of the wheel)

Figure 5: W

on of the grou

Practices d appointed procedures andd mentored; asupported in a

et the known om standards argimes to mainty functions);standards are

as the weathe

er 2, 01/04/20

ent

ea of intervene causal pathw

at the root caung multiple haired by the ortrols act to lim

y to minimisevices, pumpintrols restore tccident to a seg controls incl

), certain key g

Wheel of Safe

ups within the

ersonnel, whod practices reqand a just culture.

operating conre met; tain the equipand

e not met and

r, hot/cold, du

015

tion. Controlway to stop inuses of an inciard barriers brganisation; o

mit the outcom

e the consequng systems or the system toerious injury olude emergen

groups shown

e Production

e wheel:

o are; quired in thei

nditions;

pment to man

d addressed t

ust, noise;

s can act to: ncidents from ident – e.g. byetween causer

me of any inci

ence of a lossfirst aid capac the best possor a major env

ncy response c

n in the figure

r role, and are

nufacturer spe

through a rep

occurring. A y designing oues (energy sou

dent – and ty

s event. Typiccity; and sible state aftvironmental icapability and

below need t

e;

ecifications;

porting and br

Pg 46

ut the urces)

pically

cal

er an ncident

to be

reakdown

Wambo CoLongwalls

ORMJ140

• M• Po• Pl• Au

SequencAdditionafocus on

1. El2. Su3. En

•••

4. Sy

•••

5. PP

oal 8 to 10A Subs

08

Management solicies; anned inspecudits and revi

e of Barriers (al controls wethe hierarchy

iminate the Hubstitute/Minngineering Co• Redesign • Enclose • Isolate

ystem Control• Safe Work• Training • Warning DPE (last line of

sidence Risk A

uch as rosters

ctions; and ews.

(Hierarchy of ere developedy of controls a

Hazard imise ntrol

ls k Procedures

Devices f defence)

Assessment

Ve

s, time of wor

Controls) d throughout tas depicted in

Figure 6:

}}

er 2, 01/04/20

rk, communica

the hazard ideFigure 6.

: Hierarchy o

HARD

CO

015

ation, shift ch

entification se

of Control

D CONTROLS

SOFTONTROLS

anges, system

ection of the r

ms generally;

risk assessmen

Pg 47

nt with a

Wambo CoLongwalls

ORMJ140

12.3 R

Rank (L

A

B

C

D

E

Ref (C)

1

2

3

4

5

Tab

Ref (

1

2

3

4

5

oal 8 to 10A Subs

08

isk Ranking

L) L

Almost C

Likely

Possible

Unlikely

Rare

C

Extreme en

Major envi

Serious env

Material en

Minimal en

ble 9: Quanti

(C)

Mo

$10

$5M

$25

Less

sidence Risk A

g Tables

Tab

Likelihood

Certain

Table

Consequence

nvironmental

ronmental ha

vironmental h

nvironmental

nvironmental

itative Meas

re than $1 bil

00M to $1B lo

M to $100 mil

50 thousand (k

s than $250k

Assessment

Ve

le 7: Qualita

Happe

Could

Could

Hasn’t

Conce

e 8: Qualitati

harm e.

arm e.

harm e.ar

harm e.ar

harm e.

sures of Max

lion (B) loss o

ss or product

lion (M) loss o

k) to $5M loss

loss or produc

er 2, 01/04/20

ative Measur

ens often.

easily happen

happen and h

t happened ye

ivable, but on

ive Measure

g. widespread

g. widespread

g. widespreadrea.

g. localised anrea.

g. minor impa

ximum Reaso

Con

or production

ion delay.

or production

s or productio

ction delay.

015

res of Likelih

Desc

n.

has occurred e

et but could.

nly in extreme

es of Conseq

d catastrophic

d substantial i

d and conside

nd considerab

act on environ

onable Cons

nsequence

delay.

delay.

on delay.

hood

cription

elsewhere.

e circumstance

uence

Comment

c impact on en

impact on env

erable impact

ble impact on

nmental value

equence to

es.

t

nvironmental

vironmental v

on environme

environment

es of an area.

Assets/Busi

Pg 48

values of an a

values of an ar

ental values o

al values of an

ness

area.

rea.

of an

n

Wambo CoLongwalls

ORMJ140

oal 8 to 10A Subs

08

Cons

eque

nce

(C)

Notes: L = Low;Risk Num1 = high

sidence Risk A

1 2 3 4 5

M = Moderatmbering: est risk, 25 = l

Assessment

Ve

Table 10

A 1 (H) 3 (H) 6 (H)

10 (M) 15 (M)

te; H = High

lowest risk

er 2, 01/04/20

0: Risk Ranki

B 2 (H) 5 (H) 9 (M)

14 (M) 19 (L)

L

015

ing Table

Likelihood C

4 (H) 8 (M)

13 (M)18 (L) 22 (L)

egend:

Broa ALAR

pract Intol

(L) D

7 (M)12 (M17 (L)21 (L)24 (L)

dly AcceptablRP – As low asticable erable

E 11 (M) 16 () 20 () 23 () 25 (

le s reasonably

Pg 49

M) L) L) L) L)

ORMJ1408 Ver 2, 01/04/2015 Pg 50

12.4 About Your Report Your report has been developed on the basis of your unique and specific requirements as understood by Operational Risk Mentoring and only applies to the subject matter investigated. We have endeavoured to accurately gather information from observations, document reviews and from site personnel. Analysis has been conducted using the best methods of risk engineering science known to the author(s) and should represent a useful suite of information on which the site can base subsequent actions. Even with all these efforts made it is possible that errors may exist in the document or that the recommendations may not be fully effective in avoiding unwanted risks. To that end the reader of this report should be careful – and there is no intention by Operational Risk Mentoring or their associates to provide any warranty of representation, either expressed or implied with respect to this document, its quality, accuracy, merchantability or fitness for a particular purpose is made. As a result, this document is provided "as is" and the reader assumes the entire risk as to its quality and accuracy. In no event will Operational Risk Mentoring be liable for direct, indirect, special, incidental or consequential damages resulting from any defect or inaccuracy in the document, even if advised of the possibility of such damages. The warranty and remedies set forth above are exclusive and in lieu of all others, oral or written or implied. No employee, associate, contractor or other representative of Operational Risk Mentoring is authorised to make any modification, extension or addition to this warranty. No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission of Operational Risk Mentoring. ©COPYRIGHT Salbury Pty. Ltd. ABN 56 077 700 077