On October 7, 2020, the EPA published updates in the Federal Register to correct inaccurate testing provisions and outdated procedures, as well as adding approved alternative procedures which allow more flexibility to testers. It includes performance specifications in 40 CFR 51, 60, 61, and 63.
One noteworthy addition includes the clarification of response time from “must not exceed 2 minutes” to “must not exceed 240 seconds” in 40 CFR 60, Appendix B, PS4B, section 4.5.
There is also a stipulation on the 40 CFR 60, Appendix F, Procedure 1, section 5.2.3(2) the criteria for CGAs as applicable to diluent monitors is included. For sites subject to 40 CFR 63, Subpart LLL, the units of measure in Equations 12 (THC operating limits), 13, 17, 18, and 19 are revised for clarity.
The rule is effective on December 7, 2020. Please review the rule under 85 FR 63394 for more details.
If you have any questions on the recent update or how they may impact your facility, contact VIM COMPAS at COMPAS@vimtechnologies.com. The VIM COMPAS Team is ready to assist you.