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Biodiesel Implementation Alcoa Inc. – Tennessee Operations Novembe r 2007

Biodiesel Implementation Alcoa Inc. – Tennessee Operations Novembe r 2007. Biodiesel History. Evaluation of Biodiesel Use and Fuel Supplier. Clogged fuel filter issue develops. Evaluation indicates animal fat contamination in biodiesel. Biodiesel Use Restarted. JUL 2004. NOV 2004. DEC

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Biodiesel Implementation Alcoa Inc. – Tennessee Operations Novembe r 2007

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  1. Biodiesel ImplementationAlcoa Inc. – Tennessee OperationsNovember 2007

  2. Biodiesel History Evaluation of Biodiesel Use and Fuel Supplier Clogged fuel filter issue develops Evaluation indicates animal fat contamination in biodiesel Biodiesel Use Restarted JUL 2004 NOV 2004 DEC 2004 JAN 2005 FEB 2005 MAR 2005 APR 2005 Biodiesel Use Begins in >550 pieces of mobile equipment Biodiesel Use Suspended Revised Biodiesel specifications implemented

  3. Biodiesel Blends Spring/Summer Blend 20% Biodiesel 80 % Diesel No. 2 Fall/Winter Blend 20% Biodiesel 60 % Diesel No. 2 20 % Diesel No. 1(Kerosene)

  4. Biodiesel Supply North Plant Local Fuel Supplier B20 Diesel No. 2 B20 B-20 Delivered to TN OPS South Plant B100 B20

  5. Biodiesel Equipment >550 Pieces of Mobile Equipment Using B-20 Crucible Haulers Fork Lifts Front End Loaders Other Trucks

  6. Biodiesel Benefits • Local air pollution reductions • Improved working environment for equipment operators/plant personnel • Decreased dependency on foreign oil supply • Community stewardship

  7. Future Actions • Higher bio-diesel blend levels • Discontinue kerosene usage in winter • Use of other alternative fuels • Solar power • Energy efficiency projects

  8. Alcoa Bio-Diesel Contact: Chris Moore Environmental Engineer (865) 977-2403 chris.moore@alcoa.com

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