Indirect Greenhouse Gas Emissions Associated with Purchased Electricity Million metric tons of CO2
Estimated indirect CO2 emissions occurring at our
purchased electricity supplier facilities. Indirect emissions generally track the amount of purchased electricity. In 2006, the reduction in emissions was due, in part, to the shutdown of our Eastalco smelter in Frederick, Maryland, USA.
Fluoride Emissions Kilograms per metric ton of aluminum produced
Total Wastes Generated Millions of metric tons
Total Wastes Landfilled Thousands of metric tons
Does not include bauxite residue. Increase in 2007 is due to additional spent pot lining associated with potline demolition work and treated at our Gum Springs, Arkansas, facility, as well as some one-time wastes associated with expansion or process modification.
Total Wastes Sold or Recycled Thousands of metric tons
Spent Pot Lining Generated Kilograms per metric ton of aluminum produced
Alcoa's cell life continues to increase, resulting in fewer cell failures and fewer cells that need the lining removed and replaced. This pollution prevention effort reduces operating costs and will result in less spent pot lining for disposal.
Spent Pot Lining Recycled/Reused Percent
Decrease in 2006 due to the temporary suspension of some spent pot lining recycling.
Bauxite Residue Generated Tons per ton of alumina produced
