Where Did These New Quality Assurance Requirements for Opacity Monitors Come From?

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Courtesy of All4 Inc.

U.S. EPA promulgated the long awaited ‘‘Quality Assurance Requirements for Continuous Opacity Monitoring Systems at Stationary Sources’’ used to demonstrate continuous compliance with opacity standards specified in new source performance standards (NSPS).  This has an effective date of November 12, 2014 and is codified at 40 CFR 60 Appendix F, Procedure 3 (P3).  U.S. EPA “believes that most, if not all, owners/operators are already following procedures similar to those specified in Procedure 3.  Therefore, there are no additional costs, or reporting burden, associated with implementing Procedure 3.”  Procedure 3 establishes requirements for daily instrument zero and upscale drift checks, daily status indicator checks, quarterly performance audits, and annual zero alignments, and requires source owners and operators to have a corrective action in place for malfunctioning COMS. 

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