Anglesea August06 EIP

the big dry
the importance of water conservation measures
anglesea environment report
AUGUST 2006
Inside the ‘Best Practice’ Environment Report:
Air Emissions
Water Monitoring
Water Conservation
Animals of the Anglesea Heath: White-faced Heron
Updates on Rainfall, Town Water Use and Greenhouse Gas Emissions
Environmental improvement - progress towards 2006 targets
Plus we talk to an employee about their contribution to improving the environment
ANGLESEA ENVIRONMENT REPORT AUGUST 2006
air
Air Monitoring
Stack Monitors
Average
Maximum
Opacity g/m3 10-minute average
0.054
0.130
Stack SO2 kg/min 1-hour average Licence limit 111.34kg/min 67.50
76.21
Ambient Monitors
SO2 1 hour ppb
Average
Maximum
Community Centre
3
170
Primary School
4
246
Mt Ingoldsby
1
10
Scout Camp
10
168
Camp Wilkin
2
68
Camp Road
5
112
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 31
Community Centre 2 41 2 3 5 3 29 20 9 3 2 3 12 2 2 5 4 27 3 6 47 2 2 2 2 3 3 3 3 35 3
Primary School
1
8
0
0
10 0
36 114149 1
1
4
1281
0 246 2 115 25 25 24 6
0
0
0
3
1
0
0
41 27
Mt Ingoldsby
0
0
0
0
9
2
0
8
3
6
0
0
0
3
0
0
0
6
Scout Camp
59 6
14 5
19 4
68 61 134 7
77 10 6
65 73 39 154 73 168 5
81 140 43 5
4
6
56 54 48 70 5
Camp Wilkin
1
2
1
2
8
3
3
3
6
3
2
3
68 3
17 3
2
2
1
2
3
3
2
2
Camp Road
4
4
3
2
10 3
30 26 80 4
4
4
45 3
6
10 3
93 33 58 112 45 3
2
3
3
4
3
15 43 93
EPA Intervention Level
210
Alcoa Local Standard
170
1
2
0
0
14 2
0
6
10 9
10 0
0
3
0
0
2
0
36 2
ANGLESEA ENVIRONMENT REPORT AUGUST 2006
water
Water Storage
Barwon Water storage levels within the Geelong system at 29.1% capacity. Stage 1 restrictions apply.
Water Discharge
ML
August
Total
Ashponds (SP1)
148
1156
Mine (SP4)
0
0.8
Water Monitoring
SP1
SP4
SP3
14/08/2006
Ashpond
Mine
Final
EPA limit
Lab Result
EPA limit
Lab Result
EPA limit
Lab Result
pH
4-10
8.6
3-9
-
5-9
7.3
Susp. Solids
100
3
100
-
30
<2
Colour
50
3
50
-
50
4
Aluminium
10
0.2
10
-
5.5
< 0.1
Iron
10
0.6
0
-
4.0
< 0.1
Zinc
0.4
< 0.1
2.0
-
0.3
< 0.1
WATER WATER USAGE PER MONTH (ML)
Date
JAN
FEB MAR APR
MAY JUNE JULY AUG
Town Water
1.0
1.0
1.0
1.5
1.6
0.8
1.0
1.1
9.0
Bore Water
279
243
285
237
210
218
238
240
1950
Mine Water
81
82
81
92
106
88
93
101
724
SEPT OCT
NOV
DEC
TOTAL
300.0
3000
250.0
2500
200.0
2000
150.0
1500
100.0
1000
50.0
0.0
500
0
ANGLESEA ENVIRONMENT REPORT AUGUST 2006
water conservation
In this, Victoria’s tenth year of low rainfall, with a
growing population, climate change and degrading
river systems, we need to change the way we use
water. Water is scarce, we need to use it wisely.
Alcoa Anglesea is proving successful in it’s bid to
use its town water more wisely with a reduction
from 35 ML in 2000 to 18 ML in 2005. This trend
has continued into 2006, where our forecast for
the year is 14ML of town water. These reductions
have been achieved by process improvements
plus water saving measures such as flow
restrictors on taps, showers + basins, conversion
of toilets to low grade water for flushing and
improved work practices by employees.
Further water conservation can be achieved if we
consider water in the planning of our work: is the
use of water necessary, and if it is, can it be
substituted with a lower grade water? An example
of using low grade water is the dust suppression
program in the mine. Here, low grade water is
used in preference to higher quality water suitable
for other purposes.
With local water storage levels currently at 29%,
Stage 1 water restrictions were implemented by
Barwon Water on July 1, 2006. These restrictions
apply to our activities here at Alcoa Anglesea - the
plant car wash was recently converted to using GS
(treated bore) water and all town water hoses
should have a trigger nozzle attached. These
Stage 1 restrictions are in addition to the
permanent water by-laws. Under these by-laws,
the washing of concrete surfaces with town water,
even with a hose fitted with a trigger nozzle, is not
permitted. If using a broom is not sufficient,
concrete surfaces should always be cleaned using
low grade water.
We need to find smarter ways to use and manage
our water. We don’t want to be in the same space
as parts of regional Victoria. Coliban Water, which
provides Bendigo’s water supply, has just
introduced Stage 4 water restrictions, with their
reservoirs at 14% of capacity. These restrictions
include a ban all outside watering of gardens,
lawns and sportsgrounds and only windows and
headlights of cars may be washed.
ANIMALS OF THE ANGLESEA HEATH
White-faced Heron (Egretta novaehollandiae)
Size:
Description:
Distribution
Habitat:
Food:
70cm
unlikely to be mistaken for any other heron,
it’s grey plumage and prominent white face
is distinct. It has a long slim neck, and a
pointed grey-black bill. The legs are long
and dull yellow in colour.
the most commonly seen heron in Australia,
they are found throughout mainland
Australia and Tasmania and most coastal
islands. They also occur in Indonesia, New
Guinea, New Caledonia and New Zealand
can be found anywhere where there is water,
from tidal mudflats and coastal reefs,
waterways, lakes, and dams, to moist
grasslands and gardens
a variety of prey including fish, insects and
amphibians obtained by standing or walking
in shallow water watching for movement
WHITE-FACED HERON
ANGLESEA ENVIRONMENT REPORT AUGUST 2006
LAND
RAINFALL (mm)
Month
JAN
FEB MAR APR
MAY JUNE JULY AUG
2006 Rainfall
46.2
19.6 7.3
37.1
129.4 17.0
40.8
26.0
323.4
1968-2005 Average
44.6
43.9 42.5
53.5
59.3 60.8
61.1
67.0
432.6
SEPT OCT
NOV
DEC
TOTAL
100
7 0 0 .0 0
90
6 0 0 .0 0
80
5 0 0 .0 0
70
60
4 0 0 .0 0
50
3 0 0 .0 0
40
30
2 0 0 .0 0
20
1 0 0 .0 0
10
0 .0 0
0
WATER
TOWN WATER USE (ML)
2000 2001 2002 2003 2004 2005 2006 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
Process
23.9 14.6 13.1 16.7 15.0 13.5 6 . 1 0.7
0.7
0.8
1.1
0.9
0.6
0.6
0.7
Amenity
11.6 6.6
2 . 9 0.3
0.3
0.2
0.4
0.7
0.2
0.4
0.4
1 .8
6.6
5.0
4.0
2.6
4 0 .0
1 .6
3 5 .0
1 .4
3 0 .0
1 .2
2 5 .0
1 .0
2 0 .0
0 .8
1 5 .0
0 .6
1 0 .0
0 .4
5 .0
0 .2
0 .0
0 .0
2000
2001
2002
2003
2004
2005
2006
JA N
F E B
M A R
A P R
M A Y
JUN
JU L
A U G
S E P
O C T
NO V
D E C
AIR
GREENHOUSE GAS (GHG) TOTAL (Mt) & GHG EMISSION EFFICENCY (t/MWh)
1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006
1.42 1.62 1.56 1.45 1.34 1.25 1.20 1.38 1.42 1.53 1.23 1.27 1.50 1.45 1.47 1.31 1 . 4 9
GHG Mt
‹ GHG
t/MWh 1.34 1.35 1.33 1.32 1.31 1.33 1.38 1.34 1.30 1.30 1.24 1.19 1.21 1.21 1.20 1.21 1 . 1 9
2
1600000
1 .8
1400000
1 .6
1 .4
1 .2
1200000
1000000
1
800000
0 .8
600000
0 .6
400000
0 .4
200000
0 .2
0
0
ANGLESEA ENVIRONMENT REPORT AUGUST 2006
environmental improvement
Environmental Management Targets
August
2006 Total
Forecast
2006 Target
Reportable Environmental Incidents
0
0
0
0
Monthly EHS ASAT Audit Completion (%)
100
94
94
90
Air Emission Targets
August
2006 Total
Forecast
2006 Target
Ambient SO2 ( no. readings > 210ppb)
1
3
5
0
Stack SO2 (no. hrs > 100kg/min)
0
0
0
0
SO2 Load Reductions
13
78
117
N/A
1.17
1.19
1.19
1.20
Opacity (10 min av > 0.25g/m normal operation)
0
0
0
0
Water Targets
August
2006 Total
Forecast
2006 Target
Town Water (ML)
1.1
9.0
13.5
17.2
Bore Water (ML)
238
1950
2925
2440
Waste Targets
August
2006 Total
Forecast
2006 Target
Waste to Landfill (t)
4.66
7.36
11.0
10.0
Solid Prescribed Waste to Landfill (t)
0.0
0.0
0.0
0
GHG Efficiency (t CO2 e/MWh)
3
Mine Rehabilitation Targets
2006 Total
2006 Target
2006 Area Cleared (ha)
3.3
3.3
2006 Area Rehabilitated (ha)
7.5
> 3.3
2005 Mine Rehabilitation Species Richness (%)
N/A
100
OUR ENVIRONMENT AND OUR EMPLOYEES..
J ohn, Alcoa Anglesea has made some significant
water savings rrecently
ecently
ou wer
e involved in much of
ecently.. Y
You
were
this work, so it must be a pleasing result?
Yes it was, as it happened some of the gains were achieved by
some very simple solutions. The fitting of flow restrictors to all
amenity water outlets was one project that gave some very
significant savings.
How can employees best minimise water use?
Make water conservation a part of the daily work routine, try high
pressure washing instead of hosing things down for example.
Water conservation should be a mind set, both here at Anglesea
and at home. We are all encouraged to help with minimising
water use across the site, the Water Lead Team is an ideal forum
for people to table their ideas, this can be done by talking to
either myself or any of the team members.
Can we reduce our water usage further?
Yes there are always new products and recycling processes
being introduced. I feel that the largest gains to be made in the
future will be in water recycling and storm water capture for
reuse. Water conservation is now a part of everyday life and it is
an evolving agenda.
...JOHN BINDOKAS
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