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Standard Operating Procedure Print Date 30/07/13 Page 1 of 12
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STANDARD OPERATING PROCEDURE
TITLE:
PUBLIC SAFETY MANAGEMENT
PLAN
Risk Assessment Reference
No.:
Doc No.: SV-MS-039
Prepared by: Tony Nolan Date: 30 July 2013
Approved by: Jacques Le Roux Review Frequency: 3 years
INTRODUCTION:
This Public Safety Management Plan has been prepared as part of the SMP Approval for longwalls 411- 418.
This plan addresses potential subsidence impacts on public safety within the SMP area.
Springvale Colliery has been using longwall mining to extract coal from beneath the Newnes Plateau and its
surrounds since 1995. The land overlying the SMP area is State Forest and contains no private landholdings and
little infrastructure. The only public infrastructure above the mining area is Forests NSW roads and trails.
Private infrastructure owned by Springvale, Delta / Springvale and Integral Energy overlies the mining area.
Newnes State Forest is, however, a popular recreational destination particularly for 4WD, trail bike activities,
bushwalking and camping pursuits. The area is managed by Forests NSW. Figure 1 shows the mining area and the
identified infrastructure on the surface.
Potential safety risks that may occur as a result of subsidence include:
� Surface cracking
� Ground deformations
� Damaged infrastructure (i.e. fallen electricity transmission lines, damaged roads)
� Loss of services (i.e. power, telecommunications)
The primary risk management controls under this plan include regular communication with relevant stakeholders,
fortnightly monitoring of subsidence effects, and provision of appropriate warning signage at access points and
around hazards as required.
STATUTORY REQUIREMENTS
The Leaseholder shall implement a public safety management plan to ensure public safety in any surface areas that
may be affected by subsidence arising from the longwall mining. This plan shall include, but not be limited to,
regular monitoring of areas or infrastructure/structures posing safety risks, erection of warning signs, entry
restrictions, backfilling of dangerous surface cracks and securing of unstable built structures or rockmass where
required and appropriate, and the provision of timely notification of mining progress to the community and any
other relevant stakeholders where management of public safety is required.
The plan shall be developed and implemented to the satisfaction of the District Inspector of Coal Mines.
Subsidence monitoring is to be undertaken by a Registered Mine Surveyor
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RESPONSIBILITIES
The Springvale Technical Services Manager is responsible for ensuring that sufficient resources are available to
implement the requirements of this Plan.
The Springvale Environment and Community Coordinator is responsible the scheduling of monitoring and
reporting.
COMMUNICATIONS Notifications to the general public, relevant stakeholders and appropriate authorities have been provided as required
under all approvals. These include.
� Newspaper advertisements relating to the SMP Approval.
� Notification of the SMP Approval under Condition 6.
� Notification under Section 138(1) and Section 88 Approvals.
� Regular reporting to interested Stakeholders through the Subsidence Management Status
� Reporting (SMSR) process
� End of Panel review meetings with interested Stakeholders
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POTENTIAL SAFETY RISKS
PREDICTED SUBSIDENCE
In 2011 Springvale Coal varied their existing subsidence management plan approval to adopt a narrow panel
longwall design with wider chain pillars that focused on achieving reduced subsidence related impacts on the
environment.
Longwall panels will be 315 metres (LW415) and 260.9 metres (LWs 416 and 417) wide and have face extraction
heights of 3.25 metres. The chain pillar widths will be 45 metres and 58 metres respectively. Subsidence effect and
impact predictions have been assessed in Ditton Geotechnical Services (DgS), 2011 and summarised below in table
1.
Surface crack width magnitudes and distribution will be primarily influenced by the distribution of tensile and
compressive strain. They will also be influenced by the near surface lithology and surface topography. Worst case
cracks are expected to range between 30 to 50 mm in surface rock bars and 20 mm in deep soil or peat after
subsidence development is completed.
Table 1 Predicted Subsidence
Location Survey Site Predicted Subsidence
LW415
(W=315 metres)
B and M Cross lines Subsidence >1.5 metres
Tilt > 10 mm/metres
Tensile Strain > 15 mm/metres
Compressive Strain >18 mm/metres
LW416 and 417
(W=260 metres)
B and M Cross lines Subsidence > 1.1 metres
Tilt > 7 mm/metres
Tensile Strain > 5 mm/m
Compressive Strain > 6 mm/m (plateaus)
> 14 mm/m (valleys)
Tilt > 7 mm/metre
Tensile Strain > 5 mm/metre
Compressive Strain >14 mm/metre
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POTENTIAL RISKS
The surface to be undermined is presented in Figure 1.
A Risk Assessment was conducted as a part of the SMP application to examine the potential impact created by
subsidence on the mining area (LW 411 to 418).
This Risk Assessment was reviewed (in 2013) with no additional public safety risks in the high risk category
identified. All risks identified had either existing controls or additional controls / further actions which have been
implemented or are available to identify, control or remediate these risks.
The possible Public Safety risks are listed below with a summary of the Risk Assessment results relating to surface
features attached as Appendix A.
� Damage (cracking) to roads / tracks
� Damage (cracking) to general surface
� Destabilisation (cracking) of rock masses / faces and/or steep slopes
� Destabilisation of surface infrastructure (power lines), tilting of poles.
Controls, monitoring and remedial actions identified as core items in SMP Condition 19 have been addressed in
this Management Plan including,
� Regular monitoring of areas of infrastructure / structures posing safety risks – monitoring introduced
though no high risk areas identified.
� Erection of warning signs – completed.
� Entry restrictions – identified as part of management actions and remedial measures if Public Safety Risk
identified.
� Backfilling of dangerous surface cracks – noted as remedial measure if identified.
� Securing of unstable man-made structures or rockmass where required and appropriate noted as field
inspection and remedial measure (if required) after identification.
� Provision of timely notification of mining progress to the community and any other stakeholders where
management of Public Safety is required – noted as part of management actions.
MONITORING
Infrastructure and improvements above Longwalls 411 - 418 is presented in Figure 1.
Monitoring is conducted as per the various Management Plans submitted as part of the SMP Approval, including
Conditions 7, 10, 15, 16, 17 and 18, consisting of a combination of subsidence surveys, inspections and
environmental monitoring.
These Management Plans generally focus on intensive monitoring in the initial stages of longwall mining and the
long term monitoring of subsidence effects and consequences that may develop over time.
INSPECTIONS
Inspection is conducted as per the various Management Plans submitted as part of the SMP Approval including
Conditions 7, 10, 15, 16, 17 and 18, consisting of a combination of visual and photographic inspections.
Inspections (including photographic monitoring included in SV-MS-036) are to be undertaken by appropriately
trained/experienced personnel competent in the identification of subsidence impacts.
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Powerline inspections are to be undertaken by a licenced Electrician.
SCOPE OF INSPECTIONS
Regular inspections, at frequencies detailed in the various Management Plans cover the current mining area
(including the area associated with the 26.5 degrees angle of draw). Inspections are concentrated on items
identified in the initial survey of each longwall panel and any infrastructure.
Inspections are carried out by trained, experienced persons and follow an inspection checklist to include the items
noted above.
At the completion of mining in each longwall panel a full surface inspection is conducted and included in the End
of Panel Report (Condition 11).
Table 2 details a schedule of assets to be monitored.
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Table 2 Asset Monitoring
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Actions and Remedial Measures
Springvale has installed appropriate signage, positioned along Forest NSW roads / trails, prior to any subsidence
impacts. The objective of the signage is to ensure public users of the road / trail are aware of potential hazards
resulting from subsidence. Table 3 presents the GPS locations of subsidence signs. Figure 1 presents the subsidence
signs on a plan.
Table 3 Subsidence Signs Locations (WGS84)
Easting Northing Description SPR-Sign1 239128 6300966 Newnes Plateau -Near Bunglebori
SPR-Sign2 238456 6301185 Newnes Plateau -Powerlines
SPR-Sign3 236283 6302362 Newnes Plateau -Powerlines
SPR-Sign4 236390 6302446 Newnes Plateau -BlackfellowsHands Rd
SPR-Sign5 238059 6305165 Newnes Plateau -Sunnyside Ridge Rd
SPR-Sign6 239650 6303702 Newnes Plateau -Forestry Trail
Public Safety Issues Identified During Inspections
If any of the scheduled inspections reveal any Public Safety issue that requires immediate remedial works to ensure
Public Safety the person conducting the inspection shall:
� Immediately notify the Mine Manager and/or Environment and Community Coordinator of the findings.
� Erect danger tape (or similar) and warning signs if immediate remediation is not possible
� Take actions to remediate the immediate issue as detailed in Table 3.
� The Mine Manager shall immediately notify the District Inspector of Coal Mines, DPI, landholder and/or
infrastructure owner and other Government Departments as necessary.
� Contact relevant stakeholders as and if required under Condition 12.
Remediation of Public Safety Issues
If any Public Safety issue is identified as a result of subsidence during any of the scheduled inspections that either
does not require or cannot be immediately remediated that person shall:
� Notify the Mine Manager and/or Environment and Community Coordinator. The Mine Manager shall :
� Notify the District Inspector of Coal Mines
� Notify the landholder or infrastructure owner of the findings
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QUALITY CONTROL
Reporting
Results of subsidence surveys and the effectiveness of management strategies are to be reported in the four monthly
SMSR and also the Annual Environmental Management Report. Additionally, notification will be provided to
relevant Authorities and stakeholders of any occurrence or identification as required under Condition 12.
AUDIT AND REVIEW PROCESS
Audits are scheduled through the Business Management Framework utilising the Compliance Data Base.
Reviews required within Springvale Coal Health and Safety Management System SV-MS-001 and its associated
sub-systems are to be set-up in Lotus Notes CC040 Document Control.
Reviews are also scheduled through the Business Management Framework utilising the Compliance Data Base.
Both systems are calibrated to a common review date.
Audits shall be conducted in compliance with the Audit Process SVMP-0001.
Reviews shall be conducted in compliance with the Review Process SVMP-0001.
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APPENDIX 1 FIGURES
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APPENDIX 2 RISK ASSESSMENT
Springvale
Min
e –
LW
411 –
418 S
MP
RA
Ha
wcro
ft M
iller
Sw
an C
onsultants
Pty
Ltd
F
ebru
ary
200
5
Appe
ndix
B P
age 1
A#
A
rea
S#
Su
b-A
rea
L#
Po
ten
tial
Lo
ss S
cen
ari
o/
Hazard
(I
nclu
din
g N
atu
re &
M
ag
nit
ud
e)
Cau
ses
Exis
tin
g C
on
tro
ls
Loss Type
Consequence
Likelihood
Risk Rank
Risk Level
Ad
dit
ion
al
Co
ntr
ols
/ F
urt
her
Acti
on
s
Theoretical Worst Case
Subsidence Consequence
1
Na
tura
l F
ea
ture
s
1.0
1
Na
tura
l W
ate
r C
ou
rses
1.0
1.0
1
Incre
ase
d e
rosio
n in w
ate
r co
urs
es.
Gra
die
nt ch
an
ge
incre
ase f
low
velo
city.
Lo
w t
ilts a
nd
gra
die
nt
changes b
ased o
n s
ite
specific
subsid
ence
mo
nito
rin
g r
esu
lts.
E
5
C
22
L
5
1
Na
tura
l F
ea
ture
s
1.0
1
Na
tura
l W
ate
r C
ou
rses
1.0
1.0
2
Lo
ss o
f su
rface
flo
w in
W
olg
an tri
buta
ry a
dja
ce
nt
41
2/4
13 p
an
el.
Su
rface c
rackin
g o
f b
ed
du
e to
uplif
t o
f w
ate
r co
urs
e b
ed
rock.
Su
bsid
en
ce m
on
itorin
g.
E
4
C
18
M
S
et u
p W
olg
an
tribu
tary
ro
ck b
ar
insp
ectio
n
pro
gra
m.
Develo
p a
nd im
ple
ment
rectification p
lan
inclu
din
g s
ubsid
ence
trig
gers
on P
anel 411.
3
1
Na
tura
l F
ea
ture
s
1.0
1
Na
tura
l W
ate
r C
ou
rses
1.0
1.0
3
Ch
an
ge
in h
ab
ita
t.
Lo
ca
lise
d p
on
din
g.
Ba
se lin
e e
co
log
ical stu
dy.
E
4
D
21
L
M
on
ito
r str
ea
ms b
ein
g
underm
ined.
Develo
p a
nd im
ple
ment
po
nd
dra
ina
ge p
lan.
4
1
Na
tura
l F
ea
ture
s
1.0
2
Riv
er
Ca
tch
me
nts
1
.02.0
1
Lo
ss o
f b
ase flo
w.
Su
rface c
rackin
g o
f b
ed
du
e to
uplif
t o
f w
ate
r co
urs
e b
ed
s.
Mo
nito
rin
g f
low
fro
m
Sunnysid
e a
nd C
arn
e
Sw
am
ps.
E
5
E
25
L
5
1
Na
tura
l F
ea
ture
s
1.0
2
Riv
er
Ca
tch
me
nts
1
.02.0
2
Incre
ase
d tu
rbid
ity.
Gra
die
nt ch
an
ge
incre
ase f
low
velo
city.
Mo
nito
rin
g w
ate
r qu
alit
y a
t dis
charg
e p
oin
ts fro
m
Sunnysid
e a
nd C
arn
e
Sw
am
ps.
E
5
D
24
L
5
1
Na
tura
l F
ea
ture
s
1.0
3
Sw
am
ps &
Wate
r-re
late
d E
cosyste
ms
1.0
3.0
1
Loss o
f habitat.
Gra
die
nt change
incre
ase f
low
velo
city.
Dra
ina
ge
of su
rface
aq
uife
rs.
Lo
w g
rad
ien
t ch
an
ge
s.
On
go
ing in
ten
siv
e
mo
nito
rin
g p
rogra
m.
No s
ub-s
urf
ace f
ractu
ring
eve
n w
ith
wors
t case
su
bsid
ence
sce
na
rio
. C
lay/s
hale
layer
underlyin
g
wate
r a
qu
ifers
fe
ed
ing
sw
am
ps.
E
3
D
17
M
2
1
Na
tura
l F
ea
ture
s
1.0
3
Sw
am
ps &
Wate
r-re
late
d E
cosyste
ms
1.0
3.0
2
Imp
act o
n d
ow
n s
tre
am
w
ate
r flo
w.
Gra
die
nt ch
an
ge
incre
ase/d
ecre
ase
flo
w
velo
city.
Dra
ina
ge
of su
rface
aq
uife
rs.
Flo
w m
on
ito
rin
g.
Sw
am
ps h
ave larg
e
ca
tch
me
nts
resu
ltin
g in
an
y
incre
ase/d
ecre
ase
in f
low
due to s
ubsid
ence h
avin
g
sm
all
imp
act.
E
4
D
21
L
4
Springvale
Min
e –
LW
411 –
418 S
MP
RA
Ha
wcro
ft M
iller
Sw
an C
onsultants
Pty
Ltd
F
ebru
ary
200
5
Appe
ndix
B P
age 2
A#
A
rea
S#
Su
b-A
rea
L#
Po
ten
tial
Lo
ss S
cen
ari
o/
Hazard
(I
nclu
din
g N
atu
re &
M
ag
nit
ud
e)
Cau
ses
Exis
tin
g C
on
tro
ls
Loss Type
Consequence
Likelihood
Risk Rank
Risk Level
Ad
dit
ion
al
Co
ntr
ols
/ F
urt
her
Acti
on
s
Theoretical Worst Case
Subsidence Consequence
1
Na
tura
l F
ea
ture
s
1.0
4
Clif
f L
ines/
Ste
ep
Slo
pe
s1
.04.0
1
De
sta
bili
satio
n o
f ro
ck fa
ce
s
adja
cent
to W
olg
an
Tri
bu
tary
.
Min
ing induced h
igh
su
bsid
ence
tilt
s a
nd
str
ain
s.
Th
ere
are
no c
liff
line
s w
ith
in
the z
ero
subsid
ence lim
its
from
the p
roposed m
inin
g
are
a.
Rock faces a
re less
tha
n 2
0m
by d
efin
itio
n.
E
5
E
25
L
5
1
Na
tura
l F
ea
ture
s
1.0
4
Clif
f L
ines/
Ste
ep
Slo
pe
s1
.04.0
2
De
sta
bili
satio
n o
f ro
ck fa
ce
s
adja
cent
to W
olg
an
Tri
bu
tary
.
Min
ing induced
su
bsid
ence
tilt
s a
nd
str
ain
s.
Th
ere
are
no c
liff
line
s w
ith
in
the z
ero
subsid
ence lim
its
from
the p
roposed m
inin
g
are
a.
Rock faces a
re less
tha
n 2
0m
by d
efin
itio
n.
HS
2
E
16
M
Monitor
impacts
on r
ock
face fro
m 4
11
pa
nel
min
ing.
Develo
p a
n inspection
requirem
ent
prior
to
em
plo
ye
es a
ccessin
g
the s
ite if
monitoring
ide
ntifies r
ock face
co
llapse p
ote
ntia
l.
2
1
Na
tura
l F
ea
ture
s
1.0
4
Clif
f L
ines/
Ste
ep
Slo
pe
s1.0
4.0
3
Incre
ased e
rosio
n o
f slo
pes
in loca
lise
d a
reas.
Min
ing induced
su
bsid
ence
tilt
s a
nd
str
ain
s a
head o
f su
bsid
ence
tra
ve
ling
fa
ce.
Min
ing induced
su
bsid
ence
tilt
s a
nd
str
ain
s a
round e
dge o
f com
ple
ted longw
all
min
ing b
lock a
rea.
Min
ing induced
su
bsid
ence
tilt
s a
nd
str
ain
s a
round e
nd o
f com
ple
ted longw
all
min
ing b
lock a
rea.
So
me
loca
lise
d s
tee
p
slo
pes e
xis
t o
ve
r m
inin
g
are
a.
Tilt
s a
re lo
w in
du
ced
by
min
ing a
re 5
mm
/m o
r le
ss
me
asu
red t
o d
ate
. P
ote
ntia
l fo
r e
rosio
n
ne
glig
ible
du
e t
o h
igh
le
ve
ls
of
ve
ge
tatio
n c
ove
r.
E
5
D
24
L
4
Springvale
Min
e –
LW
411 –
418 S
MP
RA
Ha
wcro
ft M
iller
Sw
an C
onsultants
Pty
Ltd
F
ebru
ary
200
5
Appe
ndix
B P
age 3
A#
A
rea
S#
Su
b-A
rea
L#
Po
ten
tial
Lo
ss S
cen
ari
o/
Hazard
(I
nclu
din
g N
atu
re &
M
ag
nit
ud
e)
Cau
ses
Exis
tin
g C
on
tro
ls
Loss Type
Consequence
Likelihood
Risk Rank
Risk Level
Ad
dit
ion
al
Co
ntr
ols
/ F
urt
her
Acti
on
s
Theoretical Worst Case
Subsidence Consequence
1
Na
tura
l F
ea
ture
s
1.0
5
Th
rea
ten
ed &
P
rote
cte
d S
pe
cie
s
1.0
5.0
1
Sw
am
p d
ependent specie
s:
Boro
nia
Deanei
Blu
e M
ou
nta
ins W
ate
r S
kin
k
Stu
ttering F
rog
Dra
inin
g o
f sw
am
ps.
Changes in s
wam
p
pe
rim
ete
r eff
ects
ha
bitat.
Depth
of
min
ing a
nd
thic
kn
ess o
f e
xtr
actio
n lim
its
up
wa
rd e
xte
nt
of fr
actu
rin
g.
Imp
erm
ea
ble
pro
pert
ies a
nd
chara
cte
ristics o
f str
ata
. M
inin
g la
yo
ut/
desig
n.
Imperm
eable
cla
ysto
ne
laye
rs p
rese
nt
in b
ase
of
sw
am
ps.
His
torica
l e
xp
erie
nce
fro
m
min
ing
un
der
sw
am
ps in
are
a in s
imila
r co
nditio
ns.
Geolo
gic
al m
odelin
g,
mappin
g a
nd u
pdating.
Aquifer
monitoring.
Eco
log
ica
l m
on
ito
rin
g.
E
3
D
17
M
3
1
Na
tura
l F
ea
ture
s
1.0
5
Th
rea
ten
ed &
P
rote
cte
d S
pe
cie
s
1.0
5.0
2
Fo
rest
de
pen
de
nt sp
ecie
s:
Derw
entia B
lakely
i P
ers
oonia
Hin
dii
Easte
rn P
igm
y P
ossum
B
road H
eaded S
nake.
Wate
r co
urs
es d
ry u
p.
Exis
tin
g m
on
ito
rin
g.
Lo
w le
vels
of su
bsid
en
ce
tilts a
nd s
train
s
E
4
D
21
L
4
1
Na
tura
l F
ea
ture
s
1.0
6
Sta
te F
ore
sts
/Na
tura
l V
eg
eta
tio
n
1.0
6.0
1
Loss o
f habitat
as p
er
1.0
3.0
1.
B
ase lin
e e
co
log
ical stu
dy.
1
Na
tura
l F
ea
ture
s
1.0
6
Sta
te F
ore
sts
/Na
tura
l V
eg
eta
tio
n
1.0
6.0
2
Loss o
f com
merc
ial
reso
urc
e.
Restr
icte
d a
ccess to
ha
rve
st
du
e to
su
bsid
ence
.
On
go
ing r
oa
d m
ain
ten
ance
p
rog
ram
in p
lace.
Info
rm S
tate
Fore
sts
of
active
su
bsid
ence
are
a.
FL
4
E
23
L
4
1
Na
tura
l F
ea
ture
s
1.0
6
Sta
te F
ore
sts
/Na
tura
l V
eg
eta
tio
n
1.0
6.0
3
Lo
ss o
f ve
ge
tatio
n/e
rosio
n.
Cle
ari
ng
fo
r su
bsid
en
ce
mo
nito
rin
g lin
es f
or
access.
Cle
ari
ng
co
ntr
ols
im
po
se
d
as p
art
of
app
rova
l to
insta
ll su
bsid
ence
lin
es.
E
4
C
18
M
Consid
er
imple
menting
lase
r sca
nn
ing
. U
tilis
e e
xis
tin
g c
learin
gs
wh
ere
po
ssib
le.
4
2
Surf
ace
Imp
rove
me
nts
2
.01
Tra
cks/
Ro
ads
2.0
1.0
1
Lo
ca
lise
d incre
ased
ero
sio
n
Occu
rs a
t a
reas o
f gra
die
nt change.
Localis
ed p
ondin
g.
On
go
ing r
oa
d m
ain
ten
ance
p
rog
ram
in p
lace.
Lo
w s
ub
sid
en
ce tilt
s a
nd
str
ain
s.
E
5
D
24
L
5
Springvale
Min
e –
LW
411 –
418 S
MP
RA
Ha
wcro
ft M
iller
Sw
an C
onsultants
Pty
Ltd
F
ebru
ary
200
5
Appe
ndix
B P
age 4
A#
A
rea
S#
Su
b-A
rea
L#
Po
ten
tial
Lo
ss S
cen
ari
o/
Hazard
(I
nclu
din
g N
atu
re &
M
ag
nit
ud
e)
Cau
ses
Exis
tin
g C
on
tro
ls
Loss Type
Consequence
Likelihood
Risk Rank
Risk Level
Ad
dit
ion
al
Co
ntr
ols
/ F
urt
her
Acti
on
s
Theoretical Worst Case
Subsidence Consequence
2
Surf
ace
Imp
rove
me
nts
2
.02
Tra
nsm
issio
n lin
es
2.0
2.0
1
Dis
rup
tio
n o
f p
ow
er
su
pp
ly.
Tilt
ing
of
po
les.
Ove
rte
nsio
nin
g o
f ca
ble
s.
Lo
w s
ub
sid
en
ce tilt
s a
nd
str
ain
s.
Mo
nito
rin
g (
vis
ua
l an
d
su
rve
y).
Lia
ison p
rogra
m in p
lace
with
In
teg
ral E
ne
rgy.
FL
4
D
21
L
4
2
Surf
ace
Imp
rove
me
nts
2
.03
Pip
elin
es
2.0
3.0
1
Le
aka
ge c
ausin
g e
rosio
n.
Exce
ssiv
e s
ubsid
en
ce
str
ain
s a
nd tilt
s.
Flo
w m
onitoring o
n p
ipe
line
s.
Fle
xib
le w
eld
ed p
oly
pip
es.
Buried for
most
of
their
len
gth
.
E
4
D
21
L
4
2
Surf
ace
Imp
rove
me
nts
2
.04
Min
e I
nfr
astr
uctu
re
2.0
4.0
1
Su
bsid
en
ce d
am
age
to
No.3
sh
aft a
nd f
acili
ties.
Su
bsid
en
ce s
train
s a
nd
tilts.
Lo
w s
ub
sid
en
ce tilt
s a
nd
str
ain
s.
Lo
catio
n b
eyo
nd
the
e
xtr
actio
n lin
e (
ze
ro t
o
80m
m s
ubsid
ence a
rea).
FL
4
D
21
L
Desig
n fan t
o
acco
mm
od
ate
pote
ntia
l su
bsid
ence
mo
ve
me
nts
. M
onitoring s
ubsid
ence
cre
ate
d b
y L
on
gw
all
41
0.
4
2
Surf
ace
Imp
rove
me
nts
2
.04
Min
e I
nfr
astr
uctu
re
2.0
4.0
2
Su
bsid
en
ce d
am
age
to
pro
po
sed
de
wa
terin
g
bo
reh
ole
pu
mp
facili
ties.
Exce
ssiv
e s
ubsid
en
ce
str
ain
s a
nd tilt
s.
No
t d
esig
ned
an
d
ere
cte
d to w
ith
sta
nd
p
red
icte
d s
tra
ins a
nd
tilt
s.
Pre
vio
us e
xperience u
sed to
desig
n b
ore
hole
pum
p
facili
ties.
Ste
el case
d b
ore
hole
. F
lexib
le c
ou
plin
g a
t to
p o
f h
ole
.T
ole
ran
ces b
etw
ee
n
bo
reh
ole
casin
g a
nd
pu
mp
lin
e.
FL
3
D
17
M
3
2
Surf
ace
Imp
rove
me
nts
2
.05
Su
rve
y C
on
tro
l S
tatio
ns
2.0
5.0
1
Ch
an
ge
in X
YZ
valu
es.
Su
bsid
en
ce.
F
L
4
A
10
S
L
iais
e w
ith
Su
rve
y
section L
ands
Depart
ment
on
no
tificatio
n a
nd r
esu
rve
y
pro
gra
m
4
2
Surf
ace
Imp
rove
me
nts
2
.06
Dis
used
Airfie
ld
2.0
6.0
1
Ch
an
ge
in r
un
wa
y levels
. S
ub
sid
en
ce.
Ru
nw
ay in
a s
tate
of
dis
rep
air a
nd
is u
nusa
ble
. F
L
5
E
25
L
5
2
Surf
ace
Imp
rove
me
nts
2
.07
Pu
blic
Fa
cili
ties/
Am
en
ity/R
ecre
atio
n
Users
2.0
7.0
1
Re
str
ictio
n o
f access a
lon
g
roa
ds f
or
Fo
restr
y a
ctivitie
s,
pu
blic
& m
ine
access.
Su
bsid
en
ce.
Lo
w s
ub
sid
en
ce tilt
s a
nd
str
ain
s.
Wa
rnin
g s
igns a
t m
ain
entr
ances to S
tate
Fore
sts
a
bo
ut
drivin
g t
o r
oad
co
nd
itio
ns.
FL
5
E
2
5
L
Pe
rio
dic
insp
ectio
ns a
nd
ro
ad m
ain
tenance a
s
req
uir
ed.
5
Springvale
Min
e –
LW
411 –
418 S
MP
RA
Ha
wcro
ft M
iller
Sw
an C
onsultants
Pty
Ltd
F
ebru
ary
200
5
Appe
ndix
B P
age 5
A#
A
rea
S#
Su
b-A
rea
L#
Po
ten
tial
Lo
ss S
cen
ari
o/
Hazard
(I
nclu
din
g N
atu
re &
M
ag
nit
ud
e)
Cau
ses
Exis
tin
g C
on
tro
ls
Loss Type
Consequence
Likelihood
Risk Rank
Risk Level
Ad
dit
ion
al
Co
ntr
ols
/ F
urt
her
Acti
on
s
Theoretical Worst Case
Subsidence Consequence
2
Surf
ace
Imp
rove
me
nts
2
.07
Pu
blic
Fa
cili
ties/
Am
en
ity/U
se
rs
2.0
7.0
2
Use
r safe
ty.
Da
ma
ge
to r
oa
ds a
nd
tr
acks fro
m s
ub
sid
ence
. P
ub
lic n
ot
notifie
d o
f pote
ntial hazard
s c
aused
by s
ub
sid
ence.
Lo
w s
ub
sid
en
ce tilt
s a
nd
str
ain
s.
Wa
rnin
g s
igns a
t m
ain
entr
ances to S
tate
Fore
sts
a
bo
ut
drivin
g t
o r
oad
co
nd
itio
ns.
HS
4
E
23
L
4
3
Su
bsu
rface
3
.01
Gro
un
dw
ate
r R
esourc
es (
Quantity
&
Qu
alit
y)
3.0
1.0
1
Dra
inin
g the u
pper
2
aquifers
(as identified in
CS
IRO
report
date
d 2
004)
lea
din
g to w
ate
r sup
ply
re
du
ctio
n t
o s
wa
mp
s.
Fra
ctu
rin
g e
xte
nd
s to
u
pp
er
aqu
ifers
. F
ractu
res a
re
inte
rconnecting a
nd o
pen
en
ou
gh
to d
rain
aqu
ife
rs.
Ge
olo
gic
al str
uctu
re
exte
nd
s th
rou
gh a
qu
ife
r to
be
d o
f sw
am
p.
Depth
of
min
ing a
nd
thic
kn
ess o
f e
xtr
actio
n lim
its
up
wa
rd e
xte
nt
of fr
actu
rin
g.
Imp
erm
ea
ble
pro
pert
ies a
nd
chara
cte
ristics o
f str
ata
. M
inin
g la
yo
ut/
desig
n.
Imperm
eable
cla
ysto
ne
laye
rs p
rese
nt
in b
ase
of
sw
am
ps.
His
torica
l e
xp
erie
nce
fro
m
min
ing
un
der
sw
am
ps in
are
a in s
imila
r co
nditio
ns.
Geolo
gic
al m
odelin
g,
mappin
g a
nd u
pdating.
Aquifer
monitoring.
Eco
log
ica
l m
on
ito
rin
g.
E
3
E
20
L
Insta
ll pie
zom
ete
rs in
sw
am
ps in n
ew
min
ing
a
rea
.In
sta
ll pie
zom
ete
rs in
bo
reh
ole
s in n
ew
min
ing
a
rea
.
3
3
Su
bsu
rface
3
.01
Gro
un
dw
ate
r R
esourc
es (
Quantity
&
Qu
alit
y)
3.0
1.0
2
Lo
we
r a
qu
ife
rs (
as d
efin
ed
in C
SIR
O r
ep
ort
date
d
20
04
) a
re d
rain
ed into
min
e.
Pre
dic
ted m
axim
um
inflow
3
50
litre
s/s
ec.(
as p
er
CS
IRO
report
date
d 2
004).
Cra
ckin
g e
xte
nd
ing
up
wa
rds f
rom
lo
ngw
all
goaf
(for
a n
om
inal heig
ht
of
12
0m
).
(Note
: N
o d
iffe
rent fo
r th
eo
retica
l w
ors
t case
su
bsid
ence
.)
Min
e p
um
pin
g s
yste
m
desig
ned to c
ontr
ol
incre
ase
d w
ate
r m
ake
.
E
5
A
15
S
S
inkin
g d
ew
ate
rin
g
bo
reh
ole
s.
Reuse o
f m
ine w
ate
r by
De
lta
Ele
ctr
icity.
5
3
Su
bsu
rface
3
.02
Gro
un
dw
ate
r re
ch
arg
e
3.0
2.0
1
Imp
act o
n a
qu
ifers
/
gro
un
dw
ate
r re
ch
arg
e
imm
edia
tely
dow
n d
ip o
f m
inin
g a
rea.
Note
: N
o d
iffe
rent fo
r th
eo
retica
l w
ors
t case
su
bsid
ence
.
Th
e d
istu
rbe
d lo
we
r a
qu
ife
rs
do
not
imp
act
on the
surf
ace
en
viro
nm
en
t.
E
5
A
15
S
This
im
pact
will
dis
appear
aft
er
min
ing is
com
ple
ted, th
e m
ine
clo
se
d, fills
with
wate
r a
nd
gro
un
d w
ate
r re
-e
sta
blis
he
s.
5
Springvale
Min
e –
LW
411 –
418 S
MP
RA
Ha
wcro
ft M
iller
Sw
an C
onsultants
Pty
Ltd
F
ebru
ary
200
5
Appe
ndix
B P
age 6
A#
A
rea
S#
Su
b-A
rea
L#
Po
ten
tial
Lo
ss S
cen
ari
o/
Hazard
(I
nclu
din
g N
atu
re &
M
ag
nit
ud
e)
Cau
ses
Exis
tin
g C
on
tro
ls
Loss Type
Consequence
Likelihood
Risk Rank
Risk Level
Ad
dit
ion
al
Co
ntr
ols
/ F
urt
her
Acti
on
s
Theoretical Worst Case
Subsidence Consequence
3
Su
bsu
rface
3
.03
Incre
ase
d m
ine w
ate
r dis
charg
e3.0
3.0
1
Incre
ased d
ischarg
e o
f co
nn
ate
wate
r fr
om
lo
we
r a
qu
ife
rs c
rea
tes a
dd
itio
na
l h
aza
rds t
o e
nvir
on
me
nt.
Co
nn
ate
wate
r b
ein
g
dis
charg
ed f
rom
in
cre
ase
d a
rea o
f m
inin
g.
Pla
nn
ing t
o d
ischa
rge
th
is
wate
r d
ire
ctly t
o D
elta
E
lectr
icity.
Min
e p
um
pin
g s
yste
m
desig
ned to c
ontr
ol
incre
ase
d w
ate
r m
ake
. D
ischarg
e w
ill o
nly
occur
under
em
erg
ency s
ituation.
E
4
D
21
L
Sin
kin
g d
ew
ate
ring
bo
reh
ole
s.
Reuse o
f m
ine w
ate
r by
De
lta
Ele
ctr
icity.
Develo
p a
n E
merg
ency
Response D
ischarg
e
Actio
n P
lan
.
4
4
Are
as o
f A
rch
ae
olo
gic
al &
H
erita
ge
Sig
nific
ance
4.0
1
Ab
orig
ina
l a
rtifacts
4
.01.0
1
Art
ifa
cts
da
mag
ed
or
dis
turb
ed f
rom
orig
ina
l lo
catio
n.
Subsid
ence e
ffects
. C
lea
rin
g fo
r su
bsid
en
ce
su
rve
y lin
es.
Arc
ha
eolo
gic
al su
rve
y
ca
rrie
d o
ut
with n
o
sig
nific
an
t sites id
en
tifie
d.
Lo
w le
vel su
bsid
ence
tilt
s
an
d s
train
s.
On
go
ing lia
iso
n w
ith
a
bo
rig
ina
l g
rou
ps.
E
5
D
24
L
Furt
her
arc
haeolo
gic
al
su
rve
ys t
o b
e c
arr
ied
out
prio
r to
pla
nn
ed la
nd
d
istu
rba
nce
.
5
