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