ripped and ready to grow Anglesea’s mine rehabilitation for 2010 is complete alcoa anglesea 2010 environment report july ANGLESEA ENVIRONMENT REPORT JULY 2010 air Air Monitoring Stack Monitors Average Maximum Opacity g/min 10-minute average 0.063 0.162 70.12 77.26 Ambient Monitors SO2 1 hour ppb Average Maximum Community Centre 4 62 Primary School 1 71 Mt Ingoldsby 1 155 Scout Camp 3 130 Camp Wilkin 2 158 Camp Road 1 83 Stack SO2 kg/min 1-hour average Licence limit 100kg/min Ambient Monitors SO2 Maximum 1 hour averages (ppb) Date 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Comm Centre 4 4 3 4 3 3 3 13 20 54 49 13 6 4 3 6 18 4 4 4 4 3 4 4 16 8 4 4 9 14 62 Primary School 0 0 0 0 0 0 0 0 0 8 3 71 0 0 0 0 5 1 0 0 1 0 0 0 0 2 1 1 2 19 48 Mt Ingoldsby 0 0 0 0 0 0 0 8 42 155 6 1 8 0 0 0 0 0 0 0 0 0 0 0 25 1 0 1 2 0 0 Scout Camp 2 25 1 21 3 19 50 4 9 0 80 0 102 130 0 43 71 43 10 74 0 0 0 0 8 11 1 1 1 0 81 Camp Wilkin 0 0 0 0 3 0 2 1 48 93 6 2 158 4 2 0 1 0 0 2 1 3 1 0 7 3 2 0 1 2 1 Camp Road 1 10 0 0 15 0 0 3 1 31 79 36 0 1 0 0 8 83 1 1 0 0 48 0 3 8 2 2 4 22 7 EPA Air Quality Objective 200 Alcoa Local Standard 170 ANGLESEA ENVIRONMENT REPORT JULY 2010 water Water Storage Barwon Water storage levels for the Geelong system are at a five year high - 45.4% capacity. Stage 3 water restrictions apply. Water discharge ML July Total Ashponds (SP1) 91 798 Mine (SP4) 0 0 Water Monitoring 16/07/2010 SP1 Ashpond SP4 Mine Lab Result Final EPA Limit Lab Result 4 - 10 7.3 3 Susp Solids 100 <4 100 discharge 30 <4 Colour 50 3 50 at 50 3 Aluminium 10 0.23 10 time 5.5 0.10 Iron 10 0.18 20 of 4.0 0.068 Zinc 0.4 0.32 2.0 sampling 0.3 0.084 pH EPA Limit SP3 9 EPA Limit No 5 Lab Result 9 7.3 WATER WATER USE PER MONTH (ML) please note: mine water use is not metered, these values are estimated. JAN FEB MAR APR MAY JUNE JULY Town Water 1.2 1.0 2.7 0.8 0.8 0.8 0.8 Bore Water 284 258 283 244 237 210 203 Mine Water 112 52 98 72 102 76 85 AUG SEPT OCT NOV DEC ANGLESEA ENVIRONMENT REPORT JULY 2010 mine rehabilitation With the mine rehabilitation off to a late start this year, it was a winter really set in. The introduction of new State Government legislation in 2007 made the Memorandum of Understanding (MoU) and previous procedures we had in place for locating and protecting aboriginal artefacts redundant. The legislative changes meant the development of a new document called a Cultural Heritage Management Plan (CHMP) was required for the current mine plan. The CHMP is a way of protecting and managing the Aboriginal cultural heritage of the area, whilst also allowing mining production to proceed. Whilst this process began in March 2009, it took some time to complete the necessary field work, write the CHMP and ensure adequate consultation and approval from the Wadawurrung, the Registered Aboriginal Party (RAP) for our area, and Aboriginal Affairs Victoria (AAV) before any clearing could take place. With the CHMP waiting for approval, we started up the mulcher to get the practical works underway. Harvesting the understorey for mulch to use in revegetation basically involves slashing the understorey with a mulcher and then collecting the material in a trailer. As this process did not involve any disturbance to the soil, it was approved to proceed prior to the CHMP being signed off. The harvest was substantial as this -tree. In the end the mulch storage shed was overflowing. In early June, Alcoa received approval for the CHMP. Wasting no time, our operators were out on site the very next day clearing the strip area of the larger vegetation that makes up the overstorey. At the other end of the works, the crews were ANIMALS OF THE ANGLESEA HEATH MASKED LAPWING (Vanellus miles) Size: Description: Voice: Distribution: Habitat: Food: Did you know: 36cm white below, with brown wings and back, and black flight feathers and crown. Birds have large yellow wattles covering their face. A loud "kekekekekekekek" common throughout northern, central and eastern Australia. Also found in Indonesia, New Guinea, New Caledonia and New Zealand. inhabits marshes, mudflats, beaches and grasslands. feed on insects, their larvae and earthworms from just below the surface of the ground the Masked Lapwing is equipped with a yellow thorny spur with a black tip that projects from the wrist on each wing - you can see it clearly on the photo opposite. busily preparing the rehabilitation area. The gully that was once the coal haul road was filled and given a final capping of clay to blend in with the surrounding topography. Working on a rehabilitation site topped with clay in a winter that has seen substantial rainfall was challenging for the mine employees to say the least. The pre-ripping of the clay was deferred until the scrapers had laid the first 100mm of stockpiled subsoil due to the worry that broken clay + more rain = difficult conditions! Our operators completed this task with efficiency working in tandem with the circling scrapers. From there it was left to the scrapers to run back and forth picking up the next layers of fresh subsoil and topsoil and transporting these from the cut to the rehabilitation area. These layers were picked up at 100mm but then distributed at the rehabilitation site at approximately half the depth. This allowed us to rehabilitate over five hectares whilst only clearing three. Finishing touches were done using an orbital muck spreader, applying the mulch over the rehabilitation area. Finally, we did a few quick laps on the dozer ripping up the ground ready for some broadcast seeding and it was all done. The project took seven weeks from beginning to end and was a great team effort. Update: Please note the proposed HiCAL40 Alternative Fuel Trial we wrote about in our last edition has been cancelled. During a management review of the project a data error was discovered that indicated a range of design modifications would be required for us to deliver the project as it was originally intended. This change in project scope, combined with community and stakeholder input from consultation activities resulted in the trial being cancelled. ANGLESEA ENVIRONMENT REPORT JULY 2010 LAND RAINFALL (mm) Long Term Average 2010 Rainfall JAN FEB MAR APR MAY JUNE JULY 42.9 41.6 40.2 51.9 59.9 59.1 63.0 5.0 67.0 63.0 57.0 30.2 71.8 47.4 AUG SEPT OCT NOV DEC WATER TOWN WATER USE (ML) 2000 2009 2010 JAN FEB MAR APR MAY JUN JUL Amenity Water Use 11.6 2.7 2.3 0.1 0.1 1.7 0.1 0.1 0.1 0.1 Process Water use 23.9 13.5 5.9 1.1 0.9 1.1 0.7 0.7 0.7 0.7 AUG SEP OCT NOV AIR GREENHOUSE GAS (GHG) TOTAL (Mt) & GHG EMISSION EFFICIENCY (t/mwH) GHG t GHG t/MWh 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 f orecast 1227846 1265103 1504860 1448793 1468098 1309674 1491486 1396713 1452351 1361632 1479417 1.24 1.19 1.21 1.21 1.20 1.21 1.20 1.18 1.23 1.22 1.19 DEC ANGLESEA ENVIRONMENT REPORT JULY 2010 environmental improvement Environmental Management Targets July 2010 Total 2010 Forecast 2010 Target Reportable Environmental Incidents 0 0 0 0 Env Near Miss vs Env Incident Run Rate (ratio) 1 4.4 4.4 2.5 Monthly EHS ASAT Audit Completion (%) 100 100 100 90 Air Emission Targets July 2010 Total 2010 Forecast 2010 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) 20 98 168 NA 1.19 1.19 1.19 1.20 0 0 0 0 Water Targets July 2010 Total 2010 Forecast 2010 Target Town Water (ML) 0.8 8.0 12.8 14.2 Bore Water (ML) 203 1719 2946 4000 Waste Targets July 2010 Total 2010 Forecast 2010 Target Waste to Landfill (t) 3.3 3.3 5.7 8 0 0 0 0 GHG Efficiency (t CO2 e/MWh) Opacity (10 min av > 0.25g/m3 norm ops) Solid Prescribed Waste to Landfill (t) Mine Rehabilitation Targets 2010 Total 2010 Area to Clear (ha) 3.1 2010 Area to Rehabilitate (ha) 5.4 OUR ENVIRONMENT AND OUR EMPLOYEE Hi Wayne. Tell us a little about the role you played in the 2010 mine rehabilitation. Every year I look forward to the harvesting of the mulch in readiness for the new rehabilitation area and 2010 was no different. This year’s crop was extremely heavy and I would say the heaviest harvest I have done to date. Unfortunately this season is well behind schedule and I have been a little concerned. However due to favourable weather conditions and the quality of the seed within the mulch I think 2010 will be extremely successful. Why did the rehabilitation occur so late this year? It occurred due to the requirement for us to have an approved Cultural Heritage Management Plan. The delay has been very concerning to all team and staff members because it impacts heavily on our production figures. Mine rehabilitation and the environment is a very big part of our mining operation. How did you fit this work into your normal production workload? This is part of our day to day duties and the team together plan our day to day working role. The mine rehabilitation is not just the role of individuals. It is a team effort no matter how big or small a part you play in the activity.