||Eastern Research Group, Inc., Morrisville, NC.; Environmental Protection Agency, Research Triangle Park, NC. Air Pollution Prevention and Control Div.; Environmental Protection Agency, Washington, DC. Office of Research and Development.
This document was prepared for U.S. EPAs Office of Research and Development in support of EPAs Office of Air Quality Planning and Standards (OAQPS). The objective is to summarize available data used to update emissions factors for quantifying landfill gas emissions and combustion by-products using more up-to-date and representative data forU.S. municipal landfills. This document provides background information used in developing a draft of the AP-42 section 2.4 which provides guidance for developing estimates of landfill gas emissions for national, regional, and state emission inventories. EPA OAQPS will be conducting the review of Section 2.4. Once comments are addressed, the AP-42 section will be updated and available through EPAs Technology Transfer Network (TTN) Clearinghouse for Inventories & Emissions (http://www.epa. gov/ttn/chief/ap42/). This report is considered a stand-alone report providing details of available data and analysis for developing landfill gas emission factors and combustion by-products for a wider range of pollutants and technologies. The inputs that are described in this report are used in EPAs Landfill Gas Emission Model (LandGEM) for developing inputs for state, regional, and national emission inventories. Data from 62 LFG emissions tests from landfills with waste in place on or after 1992 were used to develop updated factors for use in LandGEM. This document also provides updated and additional emission factors for combustion by-products for control devices such as flares, boilers, and engines.