air pollution monitoring equipment Articles
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A new approach to SSM emissions management
On October 16, 2009, the United States Court of Appeals for the District of Columbia Circuit (DC Circuit) mandated the vacatur of the “Startup, Shutdown, and Malfunction (SSM) exemption” allowed under General Provisions in Subpart A of the National Emission Standards for Hazardous Air Pollutants (NESHAP).1 Under the SSM exemption, NESHAP Subpart A previously stipulated that an ...
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Cementing the PC MACT
On September 9, 2010, the U.S. EPA promulgated the final amendments to the National Emissions Standard for Hazardous Air Pollutants from Portland Cement Manufacturing Industry (40 CFR 63 Subpart LLL), also known as the PC MACT. EPA’s self-proclaimed “historic” rulemaking includes some important implications for cement manufacturers and other sources that may be subject to ...
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