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Technology Transfer Network
Clearinghouse for Inventories & Emissions Factors

Emission Estimation Tools

Emission Factor Tools
WebFIRE The WebFIRE database includes EPA's recommended emission estimation factors for criteria and hazardous air pollutants.

Emission Estimation Tools- Documents

Emission Estimation Tools- Software
TANKS TANKS estimates volatile organic compound (VOC) and hazardous air pollutant (HAP) emissions from fixed- and floating-roof storage tanks.
SPECIATE SPECIATE is EPA's repository of Total Organic Compound (TOC) and Particulate Matter (PM) speciated profiles for a variety of sources for use in source apportionment studies.
LandGEM The Landfill Gas Emissions Model (LandGEM) is an automated estimation tool with a Microsoft Excel interface that can be used to estimate emission rates for total landfill gas, methane, carbon dioxide, nonmethane organic compounds, and individual air pollutants from municipal solid waste landfills. It is available from the EPA's Clean Air Technology Center.
WATER9 WATER9, a wastewater treatment model, consists of analytical expressions for estimating air emissions of individual waste constituents in wastewater collection, storage, treatment, and disposal facilities; a database listing many of the organic compounds; and procedures for obtaining reports of constituent fates, including air emissions and treatment effectiveness.
PM Augmentation May 2016. The PM Augmentation Tool helps to ensure completeness of PM inventories by correcting inconsistencies in submitted data and filling gaps where possible. PM Augmentation. The file is available on the Emissions Inventories page under Emissions Inventory Tools.

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