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U.S. Environmental Protection Agency WARM Model: WAste Reduction Model

U.S. Environmental Protection Agency WARM Model: WAste Reduction Model. Timonie X. Hood U.S. EPA Region 9 California Resource Recovery Association Conference, August 4, 2008. Overview. What is the WARM Model 8? WARM Model Uses WARM Model Opportunities for Improvement.

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U.S. Environmental Protection Agency WARM Model: WAste Reduction Model

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  1. U.S. Environmental Protection Agency WARM Model: WAste Reduction Model Timonie X. Hood U.S. EPA Region 9 California Resource Recovery Association Conference, August 4, 2008

  2. Overview • What is the WARM Model 8? • WARM Model Uses • WARM Model Opportunities for Improvement

  3. WARM Model – Materials IncludedRecyclables – Compostables – Building Materials

  4. WARM Model Background:Online and Excel Spreadsheet Calculator • Streamlined Lifecycle Analysis • Compares greenhouse gas impacts of material management alternatives: • Source Reduction = Prevention, Reuse • Recycling • Composting • Landfilling • Assumes default 75% landfill gas recovery rate • Excel version can set adjusted/actual landfill gas recovery rate • Incineration • Includes transportation impacts • 20 mile distance assumption • User defined inputs – tons of materials • Enter Baseline Scenario and Alternative(s)

  5. WARM Considers: • MOST EMMISSIONS: Energy consumption needed to make, transport, use and dispose of material • CH4 emissions from landfills • Non-energy-related manufacturing emissions • CO2 and nitrous oxide (N2O) emissions from waste combustion • Carbon sequestration

  6. Greenhouse Gas Sources & Sinks Associated with the Material Life Cycle

  7. WARM Model Caveats • Emission results are relativeto alternative scenarios • Factors do not reflect “use phase” emissions • Not all waste management practices are included (e.g., anaerobic digestion) • Model is based on national assumptions (energy mix, production impacts, etc.)

  8. WARM Model Outputs • Simple online report • Conveys current material waste management practices, proposed changes, or zero waste plans in climate impacts: • Metric Tons of Carbon Equivalent (MTCE) • Metric tons of carbon dioxide equivalent (MTCO2E) • Units of Energy (million BTU) Equivalent to... - Passenger Cars Removed from the Road/Year - Barrels of Oil - Gallons of Gasoline - Household Annual Energy Consumption (Excel Version Only) • USES: Climate Plans, Outreach, Program Priorities

  9. WARM Model – Opportunities … • Additional research • Landfill and organics/composting emissions • Real world research/data • Landfill Gas Recovery rates assumptions/improve user flexibility • Incineration Analysis from a single processing facility • Add additional materials • Detailed information on assumptions: www.epa.gov/climatechange/wycd/waste/reports.html

  10. Additional Information • WARM Model – SEARCH “EPA WARM” http://epa.gov/climatechange/wycd/waste/calculators/Warm_home. html • West Coast Waste Prevention, Recovery, and Disposal Webinars http://www.epa.gov/Region10/westcoastclimate.htm Timonie Hood U.S. EPA Region 9 (415)972-3282 hood.timonie@epa.gov

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