On January 9, 2011 U.S. EPA (EPA) published in the Federal Register a proposed rule for revisions to air testing methods and procedures specified under the Prevention of Significant Deterioration (PSD) regulations, the New Source Performance Standards (NSPS), and National Emissions Standards for Hazardous Air Pollutants (NESHAPS). 77 FR 1130 (January 9, 2012). EPA will be
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