2009_ANG_ september_env_report

A-OK for AQCS
Anglesea’s Air Quality Control System commissioning gets underway
alcoa anglesea
2009
environment report
september
ANGLESEA ENVIRONMENT REPORT SEPTEMBER 2009
air
Air Monitoring
Stack Monitors
Average
Maximum
Opacity g/m3 10-minute average
0.047
0.315
Stack SO2 kg/min 1-hour average Licence limit 100kg/min
64.46
80.08
SO2 1 hour ppb
Average
Maximum
Community Centre
3
178
Primary School
3
171
Mt Ingoldsby
1
117
Scout Camp
5
108
Camp Wilkin
1
105
Camp Road
4
124
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 31
Community Centre 0 96 178 1 1 0 0 0 0 0 139104 1 0 0 29 1 0 1 0 1 0 0 2 0 0 0 0 3 2 0
Primary School
0
Mt Ingoldsby
2 117 36 1
0 0
1
0
0
0
86 123 0
0
0
88 6
0
66 1
21 5 0
51 171 0
0
0 103 99 0
1
1
1
1
0
0
2
1
0
1
6
2
2
1
8
-
3
4
0
Scout Camp
71 3 104 32 104 1
0
0
0
0 108 81 -
-
0
10 2
0
64 77 0
66 39 100 5 94 0
0
33 1 126
Camp Wilkin
1 105 25 1
2
1
1
0
0
37 3
1
1
49 0
1
2
0
1
1
Camp Road
4
3 50 11117 2
4
0
0
0
70 83 85 0
EPA Air Quality Objective
200
Alcoa Local Standard
170
38 7
7
2
1
0
21 27 3
0
1
5
1
2
0
0
2
65 15 1
0 106 22 77 29 0 37 0 0
1
84 1
2
0
0 0 106124 15
ANGLESEA ENVIRONMENT REPORT SEPTEMBER 2009
water
Water Storage
Barwon Water storage levels for the Geelong system at 35% capacity. Stage 4 restrictions apply with a
Daylight Savings exemption to permit limited residential garden watering.
Water Discharge
ML
September
Total
Ashponds (SP1)
150
1152
Mine (SP4)
0
0
Water Monitoring
SP1
SP4
SP3
21/09/2009
Ashpond
Mine
Final
EPA limit
Lab Result
EPA limit
Lab Result
EPA limit
Lab Result
pH
4-10
7.9
3-9
no
5-9
7.6
Susp. Solids
100
<4
100
discharge
30
<4
Colour
50
4
50
at
50
5
Aluminium
10
0.37
10
time
5.5
0.26
Iron
10
0.45
20
of
4.0
0.013
Zinc
0.4
0.045
2.0
sampling
0.30
0.024
WATER WATER USAGE PER MONTH (ML)
Date
JAN
FEB MAR APR
MAY JUNE JULY AUG
Town Water
2.5
1.0
1.5
1.5
2.9
1.6
0.6
1.1
1.4
14.1
Bore Water
288
270
281
237
76
233
231
232
224
2072
Mine Water
46
53
54
65
27
66
79
59
75
524
SEPT OCT
NOV
DEC
TOTAL
ANGLESEA ENVIRONMENT REPORT SEPTEMBER 2009
AQCS commissioning gets underway
The long awaited commissioning process for the
Air Quality Control System (AQCS) for sulphur
dioxide emissions management commenced in late
September. The AQCS comprises of a predictive
and reactive system, which can be considered
more sophisticated than the current load reduction
protocol, which is purely a reactive tool.
In order to minimise the risk of any Ground Level
Exceedences (GLCs) occurring during the commissioning phase, we have developed a five stage
implementation process. This cautious commissioning process has been employed to ensure
compliance with the Ambient Air Quality Objective
of 200 parts per billion averaged over a clock hour.
“Tollgate” evaluations will be conducted by the SO2
Lead Team to judge the success of the current
stage and to determine whether or not to initiate
the next stage.
We are currently at the second of the five stages of
implementation, with the predictive output of the
tool is used, in addition to the new reactive alarms
on low risk days. Instead the traditional Load
Reduction Protocol is followed. In order to ensure
any issues can be dealt with immediately, the
AQCS commissioning will occur only on day shift
until stage 5 commences. Night shift will continue
to use the Load Reduction Protocol as per usual.
The five stages are as follows:
1/ use of predictive output and no reactive alarms
followed - use of the traditional load reduction
protocol
2/ use of predictive output and following reactive
alarms on low risk days
3/ use of predictive output and following reactive
alarms on medium risk days
4/ use of predictive output and following reactive
alarms on high risk days
5/ sole operation using AQCS
We will keep everyone updated on the progress of
commissioning over the next few weeks.
PLANT OF THE ANGLESEA HEATH
ANGAHOOK CALADENIA (Caladenia maritima)
Caladenia....from the Greek, calos, beautiful, and adenos,
a gland, which refers to the many calli on the labellum of the
species in this genus
maritima... refers to the fact that the locality where the
orchid is found overlooks the sea, and is derived from the
Latin, maritimus, for the sea.
The common name indicates the orchid grows within the
Angahook area of the Great Otway National Park.
Size:
stem to 25 cm high
Form:
erect herb
Habitat:
coastal woodland
endemic to Anglesea, the species was first
recorded in 1998
Foliage:
single hairy leaf grows to 10-15cm high
Flowers:
hairy flower stem bears a single flower
large white flowers of this species are very
striking, especially in an extensive
CALADENIA MARITIMA
ANGLESEA ENVIRONMENT REPORT SEPTEMBER 2009
LAND
RAINFALL (mm)
Month
JAN
FEB MAR APR
MAY JUNE JULY AUG
2009 Rainfall
5.0
5.8
33.4
63.8
47.2
43.8
1968-2008 Average
43.9
42.5 40.4
51.6
60.2
59.5 62.6
79.2
SEPT OCT
NOV
DEC
TOTAL
91.6
61.0
430.8
65.2
67.0
492.8
WATER
TOWN WATER USE (ML)
FEB
MAR APR
MAY
JUN
JUL
AUG SEP
Process
23.9
15.5
1 1 . 9 2.5
0.8
1.2
1.3
2.3
1.5
0.5
0.7
1.1
Amenity
11.6
1.5
2.2
0.2
0.3
0.2
0.6
0.1
0.1
0.4
0.3
2000 2008 2009 JAN
0.0
OCT
NOV
DEC
AIR
GREENHOUSE GAS (GHG) TOTAL (Mt) & GHG EMISSION EFFICENCY (t/MWh)
GHG Mt
‹ GHG
t/MWh
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
1.23
1.27
1.50
1.45
1.47
1.31
1.49
1.40
1.42
1.31
1.24
1.19
1.21
1.21
1.20
1.21
1.20
1.18
1.20
1.23
ANGLESEA ENVIRONMENT REPORT SEPTEMBER 2009
environmental improvement
Environmental Management Targets
September
2009 Total
Forecast
2009 Target
Reportable Environmental Incidents
0
1
1
0
Env Near Miss vs Env Incident Run Rate (ratio)
1.5
2.1
2.1
2.5
Monthly EHS ASAT Audit Completion (%)
100
93
93
90
Air Emission Targets
September
2009 Total
Forecast
2009 Target
Ambient SO2 (no. readings > 200ppb)
0
2
2
0
Stack SO2 (no. hrs > 100kg/min)
0
0
0
0
SO2 Load Reductions (lost MWh)
5953
30055
40073
N/A
GHG Efficiency (t CO2 e/MWh)
1.22
1.23
1.23
1.20
Opacity (10 min av > 0.25g/m normal operation)
0
0
0
0
Water Targets
September
2009 Total
Forecast
2009 Target
Town Water (ML)
1.4
14.2
18.9
14.2
Bore Water (ML)
224
2072
2763
4000
Waste Targets
September
2009 Total
Forecast
2009 Target
Waste to Landfill (t)
4.34
11.64
15.5
8.0
Solid Prescribed Waste to Landfill (t)
0.0
0.0
0.0
0.0
3
Mine Rehabilitation Targets
2009 Total
2009 Target
2009 Area to Clear (ha)
0.245
0.0
2009 Area to Rehabilitate (ha)
0.658
0.0
OUR ENVIRONMENT AND OUR EMPLOYEE
Hi Steph, I understand you are the sponsor for the Air
Quality Control System (AQCS) for sulphur dioxide
management. Where did the AQCS come from?
We engaged a consulting firm, Environ, to develop and
commission this tool for us. They completed the same
project at Kalgoorlie Gold Mine in WA. The mine historically
has had issues with sulphur dioxide exceedences, and have
implemented this tool with much success.
What are you aiming to achieve by using the AQCS?
The AQCS is the next level of sophistication on our Load
Reduction Protocol. It has new predictive capabilities and a
different set of reactive trigger points. The tool is very visual
and binary in its instructions to the operators, and we hope
that with continuous improvement it will be less stressful for
our operators during periods of high sulphur dioxide
concentrations. The AQCS should help us to meet our target
of zero environmental non-compliances.
Thanks Steph, we look forward to hearing great results!
...STEPHANIE PEARCE
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