Air Emissions Factors and Quantification

Emissions Estimation Tools


The WebFIRE database includes EPA's recommended emissions estimation factors for criteria and hazardous air pollutants.

Emissions Estimation Tools- Documents
April 2015: Emission Estimation Protocol for Petroleum Refineries  Version 3
Nov 2010: Refinery wastewater emissions tool spreadsheet
Dec 2010: Greenhouse Gas Emissions Estimation Methodologies for Biogenic Emissions from Selected Source Categories: Solid Waste Disposal Wastewater Treatment Ethanol Fermentation - DRAFT

Emissions 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 emissions 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