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The Effects of New Air Modeling Standards on Landfill Gas Projects
The Effects of New Air Modeling Standards on Landfill Gas Projects
Speaker: Patrick Sullivan, Senior Vice President, SCS Engineers
Session Description: This eSession will provide a regulatory background and history of air quality standards and how they are used in Clean Air Act (CAA) permitting and modeling. Modeling requirements under Prevention of Significant Deterioration (PSD) and federal and state New Source Review (NSR) will be summarized. Case studies from the Midwest, California, and Oregon on how the new modeling standards were applied to LFG projects will be detailed. These will include how the new standards adversely affected the projects, changes that had to be made to the project or equipment to pass the modeling, and any limitations placed on the projects. Finally, the implications of these standards on the future of LFG/LFGTE project permitting across the country will also be projected as well as any need for the industry to participate in EPA working groups on the effects of the new standards in limiting needed facility growth and expansion.
This web seminar will help participants to understand the new modeling standards and requirements for air quality permitting, assess how those requirements could affect their proposed landfill gas projects, and be better prepared to configure their projects to meet these requirements.
The U.S. Environmental Protection Agency (EPA) recently published new ambient standards for air quality modeling for Clean Air Act (CAA) permitting. These include additional short-term (hourly) standards for nitrogen dioxide (NO2) and sulfur dioxide (SO2) as well as new standards for particulate less than 2.5 microns (PM2.5). PM2.5 has now become an official regulated pollutant under the CAA, and no longer can PM less than 10 microns (PM10) be used as a surrogate. These standards are proving very stringent and difficult to meet for federal Prevention of Significant Deterioration (PSD) and federal and state New Source Review (NSR) modeling. This has affected the permitting of new and expanded landfill gas (LFG) to energy (LFGTE) projects as well as LFG flares and other emission sources at landfills (e.g., diesel engines, fugitive dust sources, etc.).
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