CC-24-009: US EPA Guidance Memorandum on Protocol to Adjust for CPM Measurement Bias in Method 202

US EPA has provided guidance on an approach to adjust for positive bias in the measurement of Condensable Particulate Matter (CPM) when using US EPA Method 202 (M202) on point sources containing ammonia (NH3) and sulfur dioxide (SO2), for purposes of the New Source Review (NSR) permitting program. On November…