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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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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

Overview

  • What is the WARM Model 8?

  • WARM Model Uses

  • WARM Model Opportunities for Improvement


Warm model materials included recyclables compostables building materials

WARM Model – Materials IncludedRecyclables – Compostables – Building Materials


Warm model background online and excel spreadsheet calculator

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)


Warm considers

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


U s environmental protection agency warm model waste reduction model

Greenhouse Gas Sources & Sinks

Associated with the Material Life Cycle


Warm model caveats

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.)


Warm model outputs

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


Warm model opportunities

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


Additional information

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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