Tas Advanced Minerals, Waste Silica Flour Depot
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Tasmanian Advanced Minerals Pty Ltd Waste Silica Flour Waste Depots Environmental Effects Report Prepared for: Tasmanian Advanced Minerals Pty Ltd Date: August 2012 Rev 02 transport infrastructure | community infrastructure | industrial infrastructure | climate change Table of Contents 1. Proponent Information .................................................................................. 1 1.1 Premises addresses .............................................................................. 1 1.2 Proponent background .......................................................................... 1 1.3 Project objectives ............................................................................... 2 1.4 Environmental effects report guidelines .................................................... 2 2. Report Format ............................................................................................ 3 3. General Project Description ............................................................................ 4 3.1 Background ....................................................................................... 4 3.2 Waste silica ....................................................................................... 8 3.3 Timeframe ...................................................................................... 11 3.4 Operating hours ................................................................................ 11 3.5 Production rates ............................................................................... 11 4. Calder Details ........................................................................................... 12 4.1 Calder waste depot design ................................................................... 12 4.2 Calder depot development .................................................................. 12 4.3 Calder drainage detail ........................................................................ 14 4.4 Calder depot operations ...................................................................... 15 4.5 Groundwater - Calder ......................................................................... 19 5. Blackwater Details ..................................................................................... 23 5.1 Blackwater waste depot design ............................................................. 23 5.2 Blackwater depot development ............................................................. 23 5.3 Blackwater drainage details ................................................................. 23 5.4 Blackwater depot operations ................................................................ 24 5.5 Groundwater - Blackwater ................................................................... 27 6. Project Areas............................................................................................ 28 6.1 General areas .................................................................................. 28 6.2 Project locations ............................................................................... 29 6.3 Current and historic use of the sites ....................................................... 31 6.4 Land tenure ..................................................................................... 31 6.5 Surrounding land use .......................................................................... 31 6.6 Calder soil and geology ....................................................................... 32 6.7 Blackwater soil and geology ................................................................. 32 6.8 Climate .......................................................................................... 34 6.9 Project boundaries ............................................................................ 37 6.10 Rationale and alternatives ................................................................... 41 7. Potential Environmental Effects ..................................................................... 42 7.1 Flora and fauna ................................................................................ 43 7.2 Rivers, creeks, wetlands and estuaries .................................................... 43 7.3 Significant areas ............................................................................... 45 7.4 Coastal zone and marine areas .............................................................. 45 7.5 Air emissions .................................................................................... 45 7.6 Liquid effluent ................................................................................. 48 7.7 Solid wastes .................................................................................... 51 7.8 Noise emissions ................................................................................ 51 7.9 Transport impacts and off-site effects .................................................... 53 7.10 Dangerous substances and chemicals ...................................................... 54 7.11 Site contamination ............................................................................ 54 7.12 Sustainability and climate change .......................................................... 54 7.13 Cultural heritage .............................................................................. 54 7.14 Sites of high public interest ................................................................. 54 7.15 Rehabilitation .................................................................................. 55 8. Landfill Sustainability Guide 2004 ................................................................... 59 8.1 Calder depot .................................................................................... 59 8.2 Blackwater depot .............................................................................. 60 9. Management Commitments .......................................................................... 62 10. Public Consultation .................................................................................... 63 pitt&sherry ref: HB11206H001 EER Report 31P Rev 02/JL/bb 1. Proponent Information Tasmanian Advanced Minerals Pty Ltd Processing Plant address: 19 Stennings Road Wynyard 7325 Postal address: PO Box 378, Wynyard TAS 7325 Phone: (03) 6421 167; Fax: (03) 6442 2001 ABN 51122089221; ACN 122089221 Responsible person - Mr Chris Stuart - Managing Director Registered Business Address: 19 Stennings Road Wynyard 7325. 1.1 Premises addresses Blackwater The Blackwater waste silica depot will be located on the existing Blackwater mine site on Blackwater Spur 1 Road off the Blackwater Road approximately 3 km west of the Kanunnah Bridge and 0.6 km south of the Arthur River. The location is approximately 33 km southwest of Smithton, 13 km southwest of Trowutta and 15 km southwest of Roger River in Tasmania. The activity will be undertaken on Mining Lease 9M/2007 issued by the Crown in January 2008. The mining lease covers 214 ha. The mining lease authorises the extraction and handling of category 5 materials, namely industrial minerals and semi precious stone, with the principal product being silica. Calder The Calder waste silica depot will be located on the existing Hanson Construction Materials mine site on Calder Road approximately 0.8 km east from the Inglis River. The location is approximately 10 km southwest of the intersection of Calder Road and the Bass Highway at Wynyard in Tasmania. The activity will be undertaken on Mining Lease 68M/1980 issued by the Crown in February 1981. The mining lease covers 349 ha. The mining lease authorises the extraction and handling of category 3 construction minerals, with the principal product being gravel. 1.2 Proponent background The Tasmanian Advanced Minerals Pty Ltd (TAM) operates a silica processing plant at Wynyard in Tasmania. The processing plant is a level 2 activity regulated by the Environment Protection Authority, under permit DA 170/2005 – A (NELMS No. 7220). The TAM silica processing plant is located at Stennings Road in Wynyard, 200 m west of the Bass Highway and Calder Road intersection. The process consists of the wet particle size segregation of the raw silica sands into different size fractions. The raw silica sand is extracted from TAM extractive pits located at Blackwater and Hawkes Creek on the northwest coast of Tasmania. pitt&sherry ref: HB11206H001 EER Report 31P Rev 02/JL/bb 1 During processing of the raw silica sand, the fine silica fraction contained in the raw material passes through the plant as a waste size fraction, and currently there is no commercial market for this material, however there may be in future. The waste silica flour is not created in the processing plant, but consists of an unsalable fines fraction that passes through the wet screening process. Although a ‘ball mill’ is used in the process, its purpose is for disaggregating lump material autogenously. There is no comminution of the material with a grinding medium. TAM owns and operates three level 2 silica extractive pits, which supply the TAM processing plant in Wynyard. The processing plant currently produces approximately 20,000 m3/annum of waste silica flour containing approximately 10% to 20% free water. TAM has been operating in Tasmania since 2007. In that time no environmental protection notices have been issued against TAM, regarding unacceptable environmental performance or for causing any environmental nuisance or harm. TAM is continually pursuing alternative reuse and waste management options