2008 04 april

digging deep
barwon water’s anglesea borefield project
alcoa anglesea
2008
environment report
april
ANGLESEA ENVIRONMENT REPORT APRIL 2008
air
Air Monitoring
Stack Monitors
Average
Maximum
Opacity g/m3 10-minute average
0.069
0.335
Stack SO2 kg/min 1-hour average Licence limit 100kg/min
60.45
85.23
SO2 1 hour ppb
Average
Maximum
Community Centre
1
179
Primary School
3
104
Mt Ingoldsby
<1
55
Scout Camp
3
96
Camp Wilkin
<1
30
Camp Road
3
145
Ambient Monitors
Ambient Monitors
SO2 Maximum 1 hour averages (ppb)
Date
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Community Centre 2 179 1 0 0 13 0 2 1 0 44 0 2 2 0 0 0 0 2 2 2 1 2 2 2 2 2 2 2 3
Primary School
41 72 1
1
0
0
1
2
Mt Ingoldsby
0
0
0
0
1
10 0
Scout Camp
26 13 8
84 44 1
4
1
Camp Wilkin
2
30 1
1
0
0
1
145106 0
8
0
0
1
Camp Road
EPA Air Quality Objective
200
Alcoa Local Standard
170
0
0
0
1
0
0
0
0
9
2
0
0
1
2
0
64 -
-
2
40
0
1
0
0
1
0
55 2
2
2
1
0
0
0
0
0
0
27 2
21 96 0
1
1
0
0
1
3
3
2
0
2
2
7
88 38 86 2
2
2
0
25 1
0
1
0
1
1
0
10 4
1
0
2
3
1
1
-
0
3
4
1
74 0 102 1
0
0
0
0
0
0
20 3
2
1
2
2
1 121 0
1
1
48
48 0 104 1
3
1
0
0
0
ANGLESEA ENVIRONMENT REPORT APRIL 2008
water
Water Storage
Barwon Water storage levels for the Geelong system at 25.8% capacity. New Stage 4 winter water
restrictions commenced in April with an exemption to permit limited residential garden watering.
Water Discharge
ML
April
Total
Ashponds (SP1)
145
537
Mine (SP4)
0
0
Water Monitoring
SP1
SP4
SP3
14/04/2008
Ashpond
Mine
Final
EPA limit
Lab Result
EPA limit
Lab Result
EPA limit
Lab Result
pH
4-10
7.9
3-9
-
5-9
7.1
Susp. Solids
100
<4
100
-
30
<4
Colour
50
4
50
-
50
5
Aluminium
10.00
0.13
10
-
5.50
0.06
Iron
10.00
0.17
20
-
4.00
0.13
Zinc
0.40
< 0.01
2.0
-
0.30
< 0.01
WATER WATER USAGE PER MONTH (ML)
Date
JAN
FEB MAR APR
Town Water
1.4
0.9
0.9
2.2
5.4
Bore Water
279
304
305
254
1142
Mine Water
53
24
45
26
148
MAY JUNE JULY AUG
SEPT OCT
NOV
DEC
TOTAL
3 0 0 .0
3000
2 5 0 .0
2500
2 0 0 .0
2000
1 5 0 .0
1500
1 0 0 .0
1000
5 0 .0
0 .0
500
0
ANGLESEA ENVIRONMENT REPORT APRIL 2008
anglesea borefield project
background
Twelve months ago we reported on Barwon
Water’s investigation into a new groundwater
resource for the greater Geelong region. The
Anglesea borefield project, identified in the
Victorian Government’s Central Region Sustainable
Water Strategy, has been brought forward three
years in response to declining surface water
storages, the uncertainty of a return to average
rainfall, and to meet future growth in the region by
early
2009.
It is anticipated
the borefield could provide up to
20 megalitres (ML) of water a day to customers in
the greater Geelong region, including Geelong, the
Bellarine Peninsula, Torquay, Anglesea, Winchelsea,
Lara and Bannockburn.
Two borefield investigation zones have been
identified. A northern investigation zone is located
in the vicinity of Barwon Water’s Forest Road
basin site and a southern investigation zone is
located adjacent to Coal Mine Road, along the
southern boundary of the Alcoa coal mine.
The Anglesea borefield will tap into the Lower
Eastern View aquifer which extends from the
eastern edge of the Otway Ranges and flows in a
south easterly direction deep under Anglesea and
beyond.
recent investigations
During the first stage of investigative drilling three
observation bores were constructed - two at
Barwon Water’s Anglesea Basin on Forest Road,
and one at the gravel dump on Camp Road,
Anglesea. These bores have provided valuable
data for the hydro-geological assessment
component of the project. Current investigative
drilling involves drilling of a deep test bore and
another shallow observation bore at the Pony Club
on Coalmine Road and to undertake a pump test.
The proposed pump test involves extracting
approximately 5 ML a day for a 14 to 21 day
period. Water extracted during the pump test will
be used by Alcoa for the power station’s cooling
process. As evident by the pipe work in the
contractor’s car park, the water is being piped
from Coalmine Road to a portable cooling tower
and then into Well Site 1 where the water will follow
the same treatment path as our regularly extracted
bore water. As the recipient of this water, Alcoa
will be able to temporarily stop extraction from the
Upper Eastern View aquifer. Although only for a
short period of time, it will provide a valuable
opportunity for some recovery in the upper aquifer
with less extraction.
further info
A project team member will be in the Anglesea
Office on the corner of Harvey and Parker Streets,
Anglesea, every Tuesday between 9.30am4pm
4pm. Please phone 5226 9178 to make an
appointment. Further information can be found at
www.barwonwater.vic.gov.au
PLANT OF THE ANGLESEA HEATH
BEARDED MIDGE ORCHID (Corunastylis morrisii)
Corunastylis
Corunastylis...from the Greek koryne (club) and stylos
(column) refers to the shape of the species style
morrisii
morrisii... honours P.F. Morris, a former botanist of
Melbourne Herbarium.
Size:
Distribution:
Habitat:
stem up to 30cm tall
Victoria, New South Wales and Tasmania
valley sclerophyll forest, grassy low open
forest, open heathland and woodlands
Foliage:
leaf to 30cm long that closely sheathes the
brownish flower stem, free for 20mm
Flowers:
a dense spike of 3 to 25 purplish flowers to
8mm across with purple and reddish
markings; petals and labellum fringed with
long dark purple hairs
December - May, mainly March - April
Requirements: damp clay soil
Did you know? Pollination is thought to be by small flies
BEARDED MIDGE ORCHID
ANGLESEA ENVIRONMENT REPORT APRIL 2008
LAND
RAINFALL (mm)
Month
JAN
FEB MAR APR
2008 Rainfall
19.8
35.8 15.2
17.3
88.1
1968-2007 Average
44.5
42.7 41.1
52.5
180.8
MAY JUNE JULY AUG
SEPT OCT
NOV
DEC
TOTAL
100
7 00.00
90
6 00.00
80
5 00.00
70
60
4 00.00
50
3 00.00
40
30
2 00.00
20
1 00.00
10
0 .0 0
0
WATER
TOWN WATER USE (ML)
FEB
MAR APR
Process
23.9
2000 2007 2008 JAN
12.8
5.0
1.3
0.8
0.8
2.1
Amenity
11.6
1.5
0.4
0.1
0.1
0.1
0.1
MAY
JUN
JUL
AUG SEP
OCT
NOV
DEC
4 0 .0
3 5 .0
2 .0
3 0 .0
1 .5
2 5 .0
2 0 .0
1 .0
1 5 .0
1 0 .0
0 .5
5 .0
0 .0
0 .0
2 0 0 0
2 0 0 7
2 0 0 8
JA N
F E B
M A R
A P R
M A Y
JU N
JU L
A U G
S E P
O C T
N O V
D E C
AIR
GREENHOUSE GAS (GHG) TOTAL (Mt) & GHG EMISSION EFFICENCY (t/MWh)
GHG Mt
‹ GHG
t/MWh
1990
2000
2001
2002
2003
2004
2005
2006
2007
2008
1.42
1.23
1.27
1.50
1.45
1.47
1.31
1.49
1.40
1.39
1.34
1.24
1.19
1.21
1.21
1.20
1.21
1.20
1.18
1.18
2
1600000
1 .8
1400000
1 .6
1 .4
1 .2
1200000
1000000
1
800000
0 .8
600000
0 .6
400000
0 .4
0 .2
0
200000
0
ANGLESEA ENVIRONMENT REPORT APRIL 2008
environmental improvement
Environmental Management Targets
April
2008 YTD
Forecast
2008 Target
Reportable Environmental Incidents
0
0
0
0
Monthly EHS ASAT Audit Completion (%)
100
100
100
90
Air Emission Targets
April
2008 YTD
Forecast
2008 Target
Ambient SO2 ( no. readings > 200ppb)
0
0
0
0
Stack SO2 (no. hrs > 100kg/min)
0
0
0
0
SO2 Load Reductions (lost MWh)
1934
3984
11952
N/A
GHG Efficiency (t CO2 e/MWh)
1.19
1.18
1.18
1.20
Opacity (10 min av > 0.25g/m normal operation)
0
0
0
0
Water Targets
April
2008 YTD
Forecast
2008 Target
Town Water (ML)
2.2
5.4
16.2
14.2
Bore Water (ML)
254
1142
3426
2370
Waste Targets
April
2008 YTD
Forecast
2008 Target
Waste to Landfill (t)
0.0
0.0
0.0
8.0
Solid Prescribed Waste to Landfill (t)
0.0
0.0
0.0
0.0
3
Mine Rehabilitation Targets
2008 YTD
2008 Target
2008 Area to Clear (ha)
0.0
0.0
2008 Area to Rehabilitate (ha)
0.0
0.0
2007 Mine Rehabilitation Species Richness (%)
N/A
100
OUR ENVIRONMENT AND OUR EMPLOYEE
Hey Bryce, what is the your new role of Operations
Coordinator all about? One of the main responsibilities is to be
accountable for the day to day co-ordination of the four
operating crews, along with this we also liaise closely with
maintenance personnel to establish the most important items to
be addressed from an operations prospective.
The Control Room has involvement in a couple of
environment issues at the moment - what does the Barwon
Water project mean to you? Managing the bore water whilst its
quality is being established has created a number of challenges
for both Alcoa and Barwon Water and has required constant
monitoring of water quality and volume. Once the bore has been
established and we are feeding the water into our well bore
system management will be much easy to monitor and control.
And SO2 initiatives continue in the Control Room? We are
constantly reviewing our SO2 load management protocol along
with developing better methods to monitor and react to these
events. A good example of the Mine and Operations working
together to address this issue has been the introduction of coal
blending, this process has had an impact on both departments in
the way they operate but since this process has started no
generation has been lost due to stack discharge.
...BRYCE HUTTON
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