Dyadem Stature for Risk Management

Site: Springvale UG
Title: EPBC Condition 1
Stature ID:1000497006
Version: 1
Lifecycle State: Risk Assessment In Progress
Dyadem Stature for Risk Management:
Risk Assessment Title: EPBC Condition 1
Version: 1
Region: West
Site: Springvale UG
Department: Surface
Equipment / Process: Process
Stature Risk Assessment No.: 1000497006
Study Lifecycle State: Risk Assessment In Progress
Potential Hazard No.:
PULSE Actions Required URL:
Site Risk Assessment Ref. No. (Optional):
1 of 23
Site: Springvale UG
Title: EPBC Condition 1
Stature ID:1000497006
Version: 1
Lifecycle State: Risk Assessment In Progress
2 of 23
1. Background
A risk assessment is required to identify hazards and controls related to longwall mining beneath Temperate Highland Peat Swamps on Sandstone (THPSS), which
are listed as Matters of National Environmental Significance (MNES) under the Federal Government’s Environmental Protection and Biodiversity Conservation Act.
The risk assessment will assist in the identification of risks and mitigation measures required to prevent impacts to THPSS from longwall mining. Under EPBC
Approval 2011/5949 Condition 1, an application to be submitted to SEWPaC and approval given to mine beneath THPSS or within approved buffer zones around
THPSS.
2. Objective
The following Hierarchy of Controls offers a framework for considering the effectiveness of controls. Note that the effectiveness of a control that is intended to reduce
a risk decreases from top to bottom of the list. In other words, the closer the control type is to the top of the hierarchy, the more potentially effective the control.
·Eliminate the hazard or energy source (do not use the energy)
·Minimise or replace the hazard or energy source (reduce the amount of energy to a less damaging level or replace the energy with another that has less potential
negative consequences)
·Control the hazard or energy using engineered devices (ex. Lock outs, chemical containers, mechanical roof support, gas monitors, etc.)
·Control the hazard or energy by using physical barriers (ex. machine guarding, warning signs, etc.)
·Control the hazard or energy with procedures (ex. Isolation procedures, standard operating procedures, etc.)
·Control the hazard or energy with personal protective equipment (ex. hard hats, boots with toe caps, gloves, safety glasses, welding gear, etc.)
·Control the hazard or energy with warnings and awareness (ex. posters, labels, stickers, verbal warnings, etc.)
To identify, assess and control the risks associated with longwall mining beneath THPSS.
3. Potential Hazards
Underground mining
Mining subsidence
Infrastructure construction (pipelines, roads, fences)
Mine water discharge
Subsidence monitoring
Environmental monitoring
Recreational vehicles
Forestry activities
Feral animals
Site: Springvale UG
Title: EPBC Condition 1
Stature ID:1000497006
Version: 1
Lifecycle State: Risk Assessment In Progress
3 of 23
4a. Risk Assessment Boundary Definition
Newnes Plateau THPSS potentially affected by surface subsidence area and angle of draw for Springvale Longwalls 415 – 417.
5. Risk Assessment Methods
Yes/No
Yes
Method
Workplace Risk Assessment and Control (WRAC)
Fault Tree Analysis (FTA)
Safety Integrity Level Analysis to Australian Standard 61508 (SIL)
Bow Tie Analysis (BTA)
Failure Modes and Effects Analysis (FMEA)
Hazard and Operability Analysis (HAZOP)
6. Previous Risk Assessment and other documents to be used and/or
referenced
Document Name
Title
7. Information Required for Risk Assessment
(This page intentionally left blank)
Version
Referenced Document Date
Site: Springvale UG
Title: EPBC Condition 1
Stature ID:1000497006
Version: 1
Lifecycle State: Risk Assessment In Progress
4 of 23
8. Venue and Time
Start Time
End Time
1. 05-Dec-2012
Date
Scoping
Description
Compliance Managers Office
Location
1:30 PM
2:30 PM
2. 12-Dec-2012
Assessment
Booard Room
9:00 AM
1:00 PM
3.
Review
Comment
9. Risk Assessment Team Selection
Name
Title
Industry Yrs. of Mobile Phone
Start Date Exp.
#
Company
E-Mail Address
Pulse
User
No.
Col Macdonald
Compliance Manager
Springvale Mine UG
Operation
06-Dec-1977 35
0402 217 555
colin.macdonald@centennial 140087
coal.com.au
Shaun Cleary
Environmental Consultant
Environment and
Project Management
01-May-1993 20
0427698876
shaun.cleary@centennialcoa
l.com.au
Martin Howe
Environmental Graduate
Springvale
Tony Nolan
Environmental Coordinator Springvale
19-Jul-2001
John Fennell
Hydrogeologist
RPS Aquettera
12-Oct-2007 5
David Tierney
Senior Ecologist
RPS
Iain Hornshaw
Environmental Co-ordinator Centennial Coal Angus
- Projects
Place
Steve Ditton
Principal Geotechnical
Engineer
Ditton Geotechnical
Services
12
1. Col Macdonald
Scope Confirmation
Yes
December 05, 2012
(none)
P
P
P
P
P
[email protected]
om.au
P
[email protected].
au
P
[email protected]
.au
P
Iain.hornshaw@centennialco
al.com.au
P
18-Mar-1991 22
Date
Risk Assessment
Owner
martin.howe@centennialcoal
.com.au
P
10. Scope Confirmation
Approver
Role
Attendance
1.
2.
05- 123.
Dec- Dec2012 2012
Comments
Site: Springvale UG
Title: EPBC Condition 1
Stature ID:1000497006
Version: 1
Lifecycle State: Risk Assessment In Progress
5 of 23
WRAC Analysis Worksheet
Step
1. Key threatening
processes - mining
related subsidence
Potential Incident
Current Controls
L
MRC
RR
Recommended Control
There is a risk to Springvale UG from
1.1.a. Early warning monitoring
3. Change in mining configuration or design
::: Anomolus subsidence :::
1.1.b. Ground based survey lines
adjacent to valleys
5. Develop and implement Response Strategy
1.1.c. Historical data and
Caused by:
extrapolation
Reactivation of faults or Valley closure
or Valley uplift
1.1.d. Predictive Subsidence
Modelling
Resulting in:
1.1.e. Ground and surface water
Change in ground water chemistry or
monitoring
Impacting flora or Near surface
1.1.f.
New
mine design LWs 416-417
fracturing of rocks below swamps or
including narrower long wall
Non compliance or Potential change in
panels and wider chain pillars
water table level.
8. Conduct Post-Mining Lidar surveys
C
(D)
4
(E)
18
(M)
1.1.g. Subsidence Monitoring
1.1.h. THPSSMMP
There is a risk to Springvale UG from
1.2.a. THPSSMMP
::: Cracking of swamp base :::
1.2.b. New mine design LWs 416-417
including narrower long wall
panels and wider chain pillars
Caused by:
Mine induced subsidence and
fracturing of overlying strata
1.2.c. Predictive Subsidence
Modelling
5. Develop and implement Response Strategy
D
(D)
4
(E)
21
(L)
Resulting in:
Reduction of swamp ground water or
Reduction of swamp surface water.
There is a risk to Springvale UG from
1.3.a. Predictive Subsidence
Modelling
5. Develop and implement Response Strategy
::: Near surface fracturing :::
1.3.b. THPSSMMP
4. Remediation using soft engineering solutions
Caused by:
Mine induced subsidence and
fracturing of overlying strata
1.3.c. New mine design LWs 416-417
including narrower long wall
panels and wider chain pillars
D
(D)
4
(E)
21
(L)
1.4.a. New mine design LWs 416-417
including narrower long wall
panels and wider chain pillars
D
(D)
3
(E)
17
(M)
Resulting in:
Change in ground water chemistry.
There is a risk to Springvale UG from
::: Large surface cracking >50mm :::
4. Remediation using soft engineering solutions
Bow Tie
Extension
Site: Springvale UG
Title: EPBC Condition 1
Stature ID:1000497006
Version: 1
Lifecycle State: Risk Assessment In Progress
Step
Potential Incident
6 of 23
Current Controls
L
MRC
RR
Recommended Control
1.4.b. Predictive Subsidence
Modelling
5. Develop and implement Response Strategy
There is a risk to Springvale UG from
1.5.a. 180m thick constrained zone
above fractured zone
5. Develop and implement Response Strategy
::: Surface to seam continuous
cracking :::
1.5.b. Environmental Monitoring
Caused by:
Major geological faults or Surface
topography or Tensile and
compressive strain
Resulting in:
Erosion of peat or Rerouting of surface
and ground water.
Caused by:
Drainage of surface and ground water
1.5.c. Geology - multiple fine grained
aquitards below swamps
including the Mt York
Claystone
Resulting in:
Impacts on swamp health.
1.5.d. Baseline data
E
(D)
2
(E)
16
(M)
1.5.e. CSIRO Hydrogeological
Modelling
1.5.f. Ground and surface water
monitoring
There is a risk to Springvale UG from
::: Unnatural flux of shallow ground
water level :::
Caused by:
Mine induced subsidence and
fracturing of overlying strata
Resulting in:
Loss of swamp health.
1.6.a. New mine design LWs 416-417
including narrower long wall
panels and wider chain pillars
5. Develop and implement Response Strategy
1.6.b. Predictive Subsidence
Modelling
1. Ongoing CSIRO Hydrogeological Modelling
1.6.c. THPSSMMP
1.6.d. Geology - multiple fine grained
aquitards below swamps
including the Mt York
Claystone
D
(D)
4
(E)
21
(L)
1.6.e. CSIRO Hydrogeological
Modelling
There is a risk to Springvale UG from
1.7.a. CSIRO Hydrogeological
Modelling
::: Unnatural flux of perched ground
water level :::
1.7.b. Geology - multiple fine grained
aquitards below swamps
including the Mt York
Claystone
Caused by:
Mine induced subsidence and
fracturing of overlying strata
1.7.c. New mine design LWs 416-417
including narrower long wall
5. Develop and implement Response Strategy
1. Ongoing CSIRO Hydrogeological Modelling
E
(D)
4
(E)
23
(L)
Bow Tie
Extension
Site: Springvale UG
Title: EPBC Condition 1
Stature ID:1000497006
Version: 1
Lifecycle State: Risk Assessment In Progress
Step
Potential Incident
7 of 23
Current Controls
L
MRC
RR
Recommended Control
panels and wider chain pillars
Resulting in:
Loss of swamp health.
1.7.d. Predictive Subsidence
Modelling
1.7.e. THPSSMMP
There is a risk to Springvale UG from
1.8.a. Baseline data
::: Change in vegetation (type or
condition) :::
1.8.b. New mine design LWs 416-417
including narrower long wall
panels and wider chain pillars
Caused by:
Mine induced subsidence and
fracturing of overlying strata
Resulting in:
Change of native diversity or Change
of swamp health.
There is a risk to Springvale UG from
::: Peat slumping :::
Caused by:
Mine induced subsidence and
fracturing of overlying strata
Resulting in:
Rerouting of natural water way or
Swamp instability.
1.8.c. Predictive Subsidence
Modelling
5. Develop and implement Response Strategy
D
(D)
4
(E)
21
(L)
1.8.d. THPSSMMP
1.8.e. Flora monitoring
1.9.a. THPSSMMP
5. Develop and implement Response Strategy
1.9.b. Baseline data
4. Remediation using soft engineering solutions
1.9.c. CSIRO Hydrogeological
Modelling
2. Consider inspections and photographic monitoring
1.9.d. Geology - multiple fine grained
aquitards below swamps
including the Mt York
Claystone
D
(D)
5
(E)
24
(L)
1.9.e. New mine design LWs 416-417
including narrower long wall
panels and wider chain pillars
1.9.f. Predictive Subsidence
Modelling
1.9.g. THPSSMMP
There is a risk to Springvale UG from
1.10.a. Site Lidar topographic
information
2. Consider inspections and photographic monitoring
::: Sediment influx :::
1.10.b. Exsiting baseline data- water
quality
8. Conduct Post-Mining Lidar surveys
Caused by:
Tilt, curvature and strain resulting in
change of gradient
Resulting in:
loss of swamp health or Reduction of
water quality.
1.10.c. New mine design LWs 416417 including narrower long
wall panels and wider chain
pillars
1.10.d. Predictive Subsidence
Modelling
D
(D)
3
(E)
17
(M)
Bow Tie
Extension
Site: Springvale UG
Title: EPBC Condition 1
Stature ID:1000497006
Version: 1
Lifecycle State: Risk Assessment In Progress
Step
Potential Incident
8 of 23
Current Controls
L
MRC
RR
Recommended Control
1.10.e. THPSSMMP
1.10.f. Environmental Monitoring
There is a risk to Springvale UG from
1.11.a. CSIRO Hydrogeological
Modelling
5. Develop and implement Response Strategy
::: Shallow aquifer depressurisation ::: 1.11.b. THPSSMMP
Caused by:
Mine induced subsidence and
fracturing of overlying strata
Resulting in:
Potential upper aquifer ground water
level change.
2. Other threatening
processes
There is a risk to Springvale UG from
::: Vegetation removal :::
Caused by:
Infrastructure construction
Resulting in:
Swamp instablility.
1.11.c. Baseline data
1.11.d. New mine design LWs 416417 including narrower long
wall panels and wider chain
pillars
D
(D)
3
(E)
17
(M)
1.11.e. Geology - multiple fine
grained aquitards below
swamps including the Mt York
Claystone
4. Remediation using soft engineering solutions
2.1.a. Studies undertaking ecological
assessments and
implementing avoidance
2.1.b. Implement sediment and
erosion control strategies
2.1.c. Seek appropriate approvals
D
(D)
4
(E)
21
(L)
E
(D)
3
(E)
20
(L)
D
(D)
4
(E)
21
(L)
2.1.d. Comply with approval
conditions
2.1.e. Environmental Monitoring
There is a risk to Springvale UG from
::: Vegetation removal :::
2.2.a. Nil mine water discharge into
swamps in controlled action
area
Caused by:
Mine water discharge
Resulting in:
Loss of swamp resliance.
There is a risk to Springvale UG from
2.3.a. Contractor management
system and induction protocol
::: Weed establishment :::
2.3.b. Flora monitoring
Caused by:
Vehicle access
2.3.c. Physical removal of weeds
Resulting in:
Loss of species diversity.
Bow Tie
Extension
Site: Springvale UG
Title: EPBC Condition 1
Stature ID:1000497006
Version: 1
Lifecycle State: Risk Assessment In Progress
Step
Potential Incident
9 of 23
Current Controls
There is a risk to Springvale UG from
2.4.a. Contractor management
system and induction protocol
::: Rubbish accumulation :::
2.4.b. State forest liason strategy
Caused by:
Poor rubbish disposal options
2.4.c. Monitoring
L
MRC
RR
Recommended Control
7. Remove rubbish
D
(D)
5
(E)
24
(L)
Resulting in:
Loss of swamp amenity.
There is a risk to Springvale UG from
2.5.a. Contractor management
system and induction protocol
::: Environmental monitoring :::
2.5.b. Due diligence survey prior to
installation
Caused by:
Installation of piezometers or
Installation of subsidence lines or
People movement through swamps
Resulting in:
Damage to habitat or Damage to
threathened species or Introduction of
weeds and diseases.
2.5.c. Piezometers located at edge of
swamps
2.5.d. Minimise number of monitoring
sites
6. Continue research into of remote sensing techniques
D
(D)
4
(E)
21
(L)
Bow Tie
Extension
Site: Springvale UG
Title: EPBC Condition 1
Stature ID:1000497006
Version: 1
Lifecycle State: Risk Assessment In Progress
10 of 23
WRAC Analysis Sorted by RR
Step
1. Key threatening
processes - mining
related subsidence
Potential Incident
Current Controls
There is a risk to Springvale UG from 1.5.a. 180m thick constrained zone
above fractured zone
::: Surface to seam continuous
1.5.b. Environmental Monitoring
cracking :::
1.5.c. Geology - multiple fine
grained aquitards below
Caused by:
swamps including the Mt
Drainage of surface and ground water
York Claystone
Resulting in:
1.5.d. Baseline data
Impacts on swamp health.
1.5.e. CSIRO Hydrogeological
L
MRC RR
Recommended Control
5. Develop and implement Response Strategy
E
(D)
2
(E)
16
(M)
Modelling
1.5.f. Ground and surface water
monitoring
1. Key threatening
processes - mining
related subsidence
3. Change in mining configuration or design
There is a risk to Springvale UG from 1.1.a. Early warning monitoring
::: Anomolus subsidence :::
1.1.b. Ground based survey lines
adjacent to valleys
1.1.c. Historical data and
Caused by:
extrapolation
Reactivation of faults or Valley closure
or Valley uplift
1.1.d. Predictive Subsidence
Modelling
Resulting in:
1.1.e. Ground and surface water
Change in ground water chemistry or
monitoring
Impacting flora or Near surface
fracturing of rocks below swamps or 1.1.f. New mine design LWs 416417 including narrower long
Non compliance or Potential change
wall panels and wider chain
in water table level.
pillars
5. Develop and implement Response Strategy
8. Conduct Post-Mining Lidar surveys
C
(D)
4
(E)
18
(M)
1.1.g. Subsidence Monitoring
1.1.h. THPSSMMP
1. Key threatening
processes - mining
related subsidence
There is a risk to Springvale UG from 1.4.a. New mine design LWs 416417 including narrower long
::: Large surface cracking >50mm :::
wall panels and wider chain
pillars
Caused by:
1.4.b. Predictive Subsidence
Major geological faults or Surface
Modelling
topography or Tensile and
compressive strain
Resulting in:
Erosion of peat or Rerouting of
4. Remediation using soft engineering solutions
D
(D)
3
(E)
17 5. Develop and implement Response Strategy
(M)
Site: Springvale UG
Title: EPBC Condition 1
Stature ID:1000497006
Version: 1
Lifecycle State: Risk Assessment In Progress
Step
Potential Incident
11 of 23
Current Controls
L
MRC RR
Recommended Control
surface and ground water.
1. Key threatening
processes - mining
related subsidence
2. Consider inspections and photographic monitoring
There is a risk to Springvale UG from 1.10.a. Site Lidar topographic
information
::: Sediment influx :::
1.10.b. Exsiting baseline dataCaused by:
Tilt, curvature and strain resulting in
change of gradient
8. Conduct Post-Mining Lidar surveys
water quality
1.10.c. New mine design LWs 416417 including narrower long
wall panels and wider chain
pillars
D
(D)
3
(E)
17
(M)
Resulting in:
loss of swamp health or Reduction of 1.10.d. Predictive Subsidence
water quality.
Modelling
1.10.e. THPSSMMP
1.10.f. Environmental Monitoring
1. Key threatening
processes - mining
related subsidence
There is a risk to Springvale UG from 1.11.a. CSIRO Hydrogeological
Modelling
::: Shallow aquifer depressurisation ::: 1.11.b. THPSSMMP
Caused by:
Mine induced subsidence and
fracturing of overlying strata
5. Develop and implement Response Strategy
1.11.c. Baseline data
1.11.d. New mine design LWs 416417 including narrower long D
wall panels and wider chain (D)
pillars
3
(E)
17
(M)
3
(E)
20
(L)
Resulting in:
Potential upper aquifer ground water 1.11.e. Geology - multiple fine
level change.
grained aquitards below
swamps including the Mt
York Claystone
2. Other threatening
processes
There is a risk to Springvale UG from 2.2.a. Nil mine water discharge into
swamps in controlled action
::: Vegetation removal :::
area
E
(D)
Caused by:
Mine water discharge
Resulting in:
Loss of swamp resliance.
1. Key threatening
processes - mining
related subsidence
There is a risk to Springvale UG from 1.2.a. THPSSMMP
::: Cracking of swamp base :::
Caused by:
Mine induced subsidence and
fracturing of overlying strata
1.2.b. New mine design LWs 416417 including narrower long
wall panels and wider chain
pillars
1.2.c. Predictive Subsidence
Modelling
5. Develop and implement Response Strategy
D
(D)
4
(E)
21
(L)
Site: Springvale UG
Title: EPBC Condition 1
Stature ID:1000497006
Version: 1
Lifecycle State: Risk Assessment In Progress
Step
Potential Incident
12 of 23
Current Controls
L
MRC RR
Recommended Control
Resulting in:
Reduction of swamp ground water or
Reduction of swamp surface water.
1. Key threatening
processes - mining
related subsidence
There is a risk to Springvale UG from 1.3.a. Predictive Subsidence
Modelling
::: Near surface fracturing :::
1.3.b. THPSSMMP
Caused by:
Mine induced subsidence and
fracturing of overlying strata
1.3.c. New mine design LWs 416417 including narrower long
wall panels and wider chain
pillars
5. Develop and implement Response Strategy
4. Remediation using soft engineering solutions
D
(D)
4
(E)
21
(L)
Resulting in:
Change in ground water chemistry.
1. Key threatening
processes - mining
related subsidence
There is a risk to Springvale UG from 1.6.a. New mine design LWs 416417 including narrower long
::: Unnatural flux of shallow ground
wall panels and wider chain
water level :::
pillars
Caused by:
Mine induced subsidence and
fracturing of overlying strata
Resulting in:
Loss of swamp health.
1.6.b. Predictive Subsidence
Modelling
1.6.c. THPSSMMP
5. Develop and implement Response Strategy
1. Ongoing CSIRO Hydrogeological Modelling
D
(D)
4
(E)
21
(L)
1.6.d. Geology - multiple fine
grained aquitards below
swamps including the Mt
York Claystone
1.6.e. CSIRO Hydrogeological
Modelling
1. Key threatening
processes - mining
related subsidence
There is a risk to Springvale UG from 1.8.a. Baseline data
::: Change in vegetation (type or
condition) :::
Caused by:
Mine induced subsidence and
fracturing of overlying strata
1.8.b. New mine design LWs 416417 including narrower long
wall panels and wider chain
pillars
1.8.c. Predictive Subsidence
Modelling
5. Develop and implement Response Strategy
D
(D)
4
(E)
21
(L)
1.8.d. THPSSMMP
Resulting in:
1.8.e. Flora monitoring
Change of native diversity or Change
of swamp health.
2. Other threatening
processes
There is a risk to Springvale UG from 2.1.a. Studies undertaking
ecological assessments and
::: Vegetation removal :::
implementing avoidance
Caused by:
2.1.b. Implement sediment and
erosion control strategies
4. Remediation using soft engineering solutions
D
(D)
4
(E)
21
(L)
Site: Springvale UG
Title: EPBC Condition 1
Stature ID:1000497006
Version: 1
Lifecycle State: Risk Assessment In Progress
Step
Potential Incident
13 of 23
Current Controls
Infrastructure construction
2.1.c. Seek appropriate approvals
Resulting in:
Swamp instablility.
2.1.d. Comply with approval
conditions
L
MRC RR
Recommended Control
2.1.e. Environmental Monitoring
2. Other threatening
processes
There is a risk to Springvale UG from 2.3.a. Contractor management
system and induction
protocol
::: Weed establishment :::
Caused by:
Vehicle access
2.3.b. Flora monitoring
2.3.c. Physical removal of weeds
D
(D)
4
(E)
21
(L)
Resulting in:
Loss of species diversity.
2. Other threatening
processes
There is a risk to Springvale UG from 2.5.a. Contractor management
system and induction
::: Environmental monitoring :::
protocol
Caused by:
Installation of piezometers or
Installation of subsidence lines or
People movement through swamps
Resulting in:
Damage to habitat or Damage to
threathened species or Introduction of
weeds and diseases.
1. Key threatening
processes - mining
related subsidence
6. Continue research into of remote sensing techniques
2.5.b. Due diligence survey prior to
installation
2.5.c. Piezometers located at edge
of swamps
D
(D)
4
(E)
21
(L)
2.5.d. Minimise number of
monitoring sites
There is a risk to Springvale UG from 1.7.a. CSIRO Hydrogeological
Modelling
::: Unnatural flux of perched ground 1.7.b. Geology - multiple fine
water level :::
grained aquitards below
Caused by:
Mine induced subsidence and
fracturing of overlying strata
Resulting in:
Loss of swamp health.
swamps including the Mt
York Claystone
1.7.c. New mine design LWs 416417 including narrower long
wall panels and wider chain
pillars
5. Develop and implement Response Strategy
1. Ongoing CSIRO Hydrogeological Modelling
E
(D)
4
(E)
23
(L)
D
(D)
5
(E)
24
(L)
1.7.d. Predictive Subsidence
Modelling
1.7.e. THPSSMMP
1. Key threatening
processes - mining
related subsidence
There is a risk to Springvale UG from 1.9.a. THPSSMMP
::: Peat slumping :::
1.9.b. Baseline data
1.9.c. CSIRO Hydrogeological
5. Develop and implement Response Strategy
4. Remediation using soft engineering solutions
2. Consider inspections and photographic monitoring
Site: Springvale UG
Title: EPBC Condition 1
Stature ID:1000497006
Version: 1
Lifecycle State: Risk Assessment In Progress
Step
Potential Incident
14 of 23
Current Controls
L
MRC RR
Recommended Control
Modelling
Caused by:
Mine induced subsidence and
fracturing of overlying strata
Resulting in:
Rerouting of natural water way or
Swamp instability.
1.9.d. Geology - multiple fine
grained aquitards below
swamps including the Mt
York Claystone
1.9.e. New mine design LWs 416417 including narrower long
wall panels and wider chain
pillars
1.9.f. Predictive Subsidence
Modelling
1.9.g. THPSSMMP
2. Other threatening
processes
7. Remove rubbish
There is a risk to Springvale UG from 2.4.a. Contractor management
system and induction
::: Rubbish accumulation :::
protocol
Caused by:
Poor rubbish disposal options
Resulting in:
Loss of swamp amenity.
2.4.b. State forest liason strategy
2.4.c. Monitoring
D
(D)
5
(E)
24
(L)
Site: Springvale UG
Title: EPBC Condition 1
Stature ID:1000497006
Version: 1
Lifecycle State: Risk Assessment In Progress
15 of 23
WRAC Analysis Sorted by Consequence
Step
1. Key threatening
processes - mining
related subsidence
Potential Incident
Current Controls
There is a risk to Springvale UG from 1.5.a. 180m thick constrained zone
above fractured zone
::: Surface to seam continuous
1.5.b. Environmental Monitoring
cracking :::
1.5.c. Geology - multiple fine
grained aquitards below
Caused by:
swamps including the Mt York
Drainage of surface and ground water
Claystone
Resulting in:
1.5.d. Baseline data
Impacts on swamp health.
1.5.e. CSIRO Hydrogeological
L
MRC
RR
Recommended Control
5. Develop and implement Response Strategy
E
(D)
2
(E)
16
(M)
Modelling
1.5.f. Ground and surface water
monitoring
1. Key threatening
processes - mining
related subsidence
There is a risk to Springvale UG from 1.4.a. New mine design LWs 416417 including narrower long
::: Large surface cracking >50mm :::
wall panels and wider chain
pillars
Caused by:
1.4.b. Predictive Subsidence
Major geological faults or Surface
Modelling
topography or Tensile and
compressive strain
4. Remediation using soft engineering solutions
D
(D)
3
(E)
17
(M)
5. Develop and implement Response Strategy
Resulting in:
Erosion of peat or Rerouting of
surface and ground water.
1. Key threatening
processes - mining
related subsidence
There is a risk to Springvale UG from 1.10.a. Site Lidar topographic
information
::: Sediment influx :::
1.10.b. Exsiting baseline data- water
Caused by:
Tilt, curvature and strain resulting in
change of gradient
2. Consider inspections and photographic monitoring
8. Conduct Post-Mining Lidar surveys
quality
1.10.c. New mine design LWs 416417 including narrower long
wall panels and wider chain
pillars
D
(D)
3
(E)
17
(M)
D
(D)
3
(E)
17
(M)
Resulting in:
loss of swamp health or Reduction of 1.10.d. Predictive Subsidence
water quality.
Modelling
1.10.e. THPSSMMP
1.10.f. Environmental Monitoring
1. Key threatening
processes - mining
There is a risk to Springvale UG from 1.11.a. CSIRO Hydrogeological
Modelling
5. Develop and implement Response Strategy
Site: Springvale UG
Title: EPBC Condition 1
Stature ID:1000497006
Version: 1
Lifecycle State: Risk Assessment In Progress
Step
related subsidence
Potential Incident
Current Controls
L
MRC
RR
E
(D)
3
(E)
20
(L)
Recommended Control
::: Shallow aquifer depressurisation ::: 1.11.b. THPSSMMP
Caused by:
Mine induced subsidence and
fracturing of overlying strata
Resulting in:
Potential upper aquifer ground water
level change.
2. Other threatening
processes
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1.11.c. Baseline data
1.11.d. New mine design LWs 416417 including narrower long
wall panels and wider chain
pillars
1.11.e. Geology - multiple fine
grained aquitards below
swamps including the Mt
York Claystone
There is a risk to Springvale UG from 2.2.a. Nil mine water discharge into
swamps in controlled action
::: Vegetation removal :::
area
Caused by:
Mine water discharge
Resulting in:
Loss of swamp resliance.
1. Key threatening
processes - mining
related subsidence
3. Change in mining configuration or design
There is a risk to Springvale UG from 1.1.a. Early warning monitoring
::: Anomolus subsidence :::
1.1.b. Ground based survey lines
adjacent to valleys
1.1.c. Historical data and
Caused by:
extrapolation
Reactivation of faults or Valley closure
or Valley uplift
1.1.d. Predictive Subsidence
Modelling
Resulting in:
1.1.e. Ground and surface water
Change in ground water chemistry or
monitoring
Impacting flora or Near surface
1.1.f.
New
mine design LWs 416fracturing of rocks below swamps or
417 including narrower long
Non compliance or Potential change in
wall panels and wider chain
water table level.
pillars
5. Develop and implement Response Strategy
8. Conduct Post-Mining Lidar surveys
C
(D)
4
(E)
18
(M)
1.1.g. Subsidence Monitoring
1.1.h. THPSSMMP
1. Key threatening
processes - mining
related subsidence
There is a risk to Springvale UG from 1.2.a. THPSSMMP
::: Cracking of swamp base :::
Caused by:
Mine induced subsidence and
fracturing of overlying strata
1.2.b. New mine design LWs 416417 including narrower long
wall panels and wider chain
pillars
1.2.c. Predictive Subsidence
Modelling
5. Develop and implement Response Strategy
D
(D)
4
(E)
21
(L)
Site: Springvale UG
Title: EPBC Condition 1
Stature ID:1000497006
Version: 1
Lifecycle State: Risk Assessment In Progress
Step
Potential Incident
17 of 23
Current Controls
L
MRC
RR
Recommended Control
Resulting in:
Reduction of swamp ground water or
Reduction of swamp surface water.
1. Key threatening
processes - mining
related subsidence
There is a risk to Springvale UG from 1.3.a. Predictive Subsidence
Modelling
::: Near surface fracturing :::
1.3.b. THPSSMMP
Caused by:
Mine induced subsidence and
fracturing of overlying strata
1.3.c. New mine design LWs 416417 including narrower long
wall panels and wider chain
pillars
5. Develop and implement Response Strategy
4. Remediation using soft engineering solutions
D
(D)
4
(E)
21
(L)
Resulting in:
Change in ground water chemistry.
1. Key threatening
processes - mining
related subsidence
There is a risk to Springvale UG from 1.6.a. New mine design LWs 416417 including narrower long
::: Unnatural flux of shallow ground
wall panels and wider chain
water level :::
pillars
Caused by:
Mine induced subsidence and
fracturing of overlying strata
Resulting in:
Loss of swamp health.
1.6.b. Predictive Subsidence
Modelling
1.6.c. THPSSMMP
5. Develop and implement Response Strategy
1. Ongoing CSIRO Hydrogeological Modelling
D
(D)
4
(E)
21
(L)
1.6.d. Geology - multiple fine
grained aquitards below
swamps including the Mt York
Claystone
1.6.e. CSIRO Hydrogeological
Modelling
1. Key threatening
processes - mining
related subsidence
There is a risk to Springvale UG from 1.7.a. CSIRO Hydrogeological
Modelling
::: Unnatural flux of perched ground
1.7.b. Geology - multiple fine
water level :::
grained aquitards below
Caused by:
Mine induced subsidence and
fracturing of overlying strata
Resulting in:
Loss of swamp health.
swamps including the Mt York
Claystone
1.7.c. New mine design LWs 416417 including narrower long
wall panels and wider chain
pillars
5. Develop and implement Response Strategy
1. Ongoing CSIRO Hydrogeological Modelling
E
(D)
4
(E)
23
(L)
D
(D)
4
(E)
21
(L)
1.7.d. Predictive Subsidence
Modelling
1.7.e. THPSSMMP
1. Key threatening
processes - mining
related subsidence
There is a risk to Springvale UG from 1.8.a. Baseline data
::: Change in vegetation (type or
1.8.b. New mine design LWs 416417 including narrower long
5. Develop and implement Response Strategy
Site: Springvale UG
Title: EPBC Condition 1
Stature ID:1000497006
Version: 1
Lifecycle State: Risk Assessment In Progress
Step
Potential Incident
condition) :::
Caused by:
Mine induced subsidence and
fracturing of overlying strata
18 of 23
Current Controls
L
MRC
RR
Recommended Control
wall panels and wider chain
pillars
1.8.c. Predictive Subsidence
Modelling
1.8.d. THPSSMMP
Resulting in:
1.8.e. Flora monitoring
Change of native diversity or Change
of swamp health.
2. Other threatening
processes
There is a risk to Springvale UG from 2.1.a. Studies undertaking
ecological assessments and
::: Vegetation removal :::
implementing avoidance
Caused by:
Infrastructure construction
Resulting in:
Swamp instablility.
2.1.b. Implement sediment and
erosion control strategies
2.1.c. Seek appropriate approvals
4. Remediation using soft engineering solutions
D
(D)
4
(E)
21
(L)
D
(D)
4
(E)
21
(L)
2.1.d. Comply with approval
conditions
2.1.e. Environmental Monitoring
2. Other threatening
processes
There is a risk to Springvale UG from 2.3.a. Contractor management
system and induction protocol
::: Weed establishment :::
2.3.b. Flora monitoring
Caused by:
Vehicle access
2.3.c. Physical removal of weeds
Resulting in:
Loss of species diversity.
2. Other threatening
processes
6. Continue research into of remote sensing techniques
There is a risk to Springvale UG from 2.5.a. Contractor management
system and induction protocol
::: Environmental monitoring :::
2.5.b. Due diligence survey prior to
Caused by:
Installation of piezometers or
Installation of subsidence lines or
People movement through swamps
installation
2.5.c. Piezometers located at edge
of swamps
2.5.d. Minimise number of
monitoring sites
D
(D)
4
(E)
21
(L)
D
(D)
5
(E)
24
(L)
Resulting in:
Damage to habitat or Damage to
threathened species or Introduction of
weeds and diseases.
1. Key threatening
processes - mining
related subsidence
There is a risk to Springvale UG from 1.9.a. THPSSMMP
::: Peat slumping :::
1.9.b. Baseline data
1.9.c. CSIRO Hydrogeological
5. Develop and implement Response Strategy
4. Remediation using soft engineering solutions
2. Consider inspections and photographic monitoring
Site: Springvale UG
Title: EPBC Condition 1
Stature ID:1000497006
Version: 1
Lifecycle State: Risk Assessment In Progress
Step
Potential Incident
19 of 23
Current Controls
L
MRC
RR
Recommended Control
Modelling
Caused by:
Mine induced subsidence and
fracturing of overlying strata
Resulting in:
Rerouting of natural water way or
Swamp instability.
1.9.d. Geology - multiple fine
grained aquitards below
swamps including the Mt York
Claystone
1.9.e. New mine design LWs 416417 including narrower long
wall panels and wider chain
pillars
1.9.f. Predictive Subsidence
Modelling
1.9.g. THPSSMMP
2. Other threatening
processes
7. Remove rubbish
There is a risk to Springvale UG from 2.4.a. Contractor management
system and induction protocol
::: Rubbish accumulation :::
2.4.b. State forest liason strategy
Caused by:
Poor rubbish disposal options
Resulting in:
Loss of swamp amenity.
2.4.c. Monitoring
D
(D)
5
(E)
24
(L)
Site: Springvale UG
Title: EPBC Condition 1
Stature ID:1000497006
Version: 1
Lifecycle State: Risk Assessment In Progress
CEY Risk Matrix Page 1
20 of 23
Site: Springvale UG
Title: EPBC Condition 1
Stature ID:1000497006
Version: 1
Lifecycle State: Risk Assessment In Progress
CEY Risk Matrix Page 2
21 of 23
Site: Springvale UG
Title: EPBC Condition 1
Stature ID:1000497006
Version: 1
Lifecycle State: Risk Assessment In Progress
CEY Risk Matrix Page 3
22 of 23
Site: Springvale UG
Title: EPBC Condition 1
Stature ID:1000497006
Version: 1
Lifecycle State: Risk Assessment In Progress
23 of 23