EPA Publishes Updates Correcting Inaccurate Testing Provisions, Outdated Procedures, and More

On October 7, 2020, the EPA published updates in the Federal Register to correct inaccurate testing provisions and outdated procedures, as well as adding approved alternative procedures which allow more flexibility to testers.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.

EPA Signs Final Revisions to 40 CFR Part 63

EPA Seal

On October 1, 2020, the EPA Administrator signed final revisions to 40 CFR Part 63, National Emission Standards for Hazardous Air Pollutants for Source Categories.

The rule will become effective sixty (60) days after publication in the Federal Register.  The rule is designed to formalize EPA’s 2018 guidance memorandum which overturned EPA previous policy of “once in, always in” (OIAI), which is often referred to as the May 1995 Seitz Memorandum.

The rule also finalizes revisions to the Part 63 General Provisions clarifying “that a major source can be reclassified to area source status at any time upon reducing its potential to emit (PTE) hazardous air pollutants (HAP) to below the major source thresholds (MST) of 10 tons per year (tpy) of any single HAP and 25 tpy of any combination of HAP.”

Additionally, the final rule specifies compliance dates, notification, and recordkeeping provisions applicable to sources electing to reclassify to area source status or to sources reverting back to major source status.  A copy of the prepublication version of the rule is available here.

Clean Air Markets Division Updates Part 75 Policy Manual

On September 28, 2020 the Clean Air Markets Division (CAMD) posted an update to the Part 75 Emissions Monitoring Technical Q&A (also known as the ‘Part 75 Policy Manual’) that contains five new questions and two revised questions. You can access the new and updated questions here.

The new questions center around Like-Kind monitors, Low Mass Emitters (LME) and Part 75 Appendix D Fuel Flowmeters. The most notable question, Question 23.22, provides clarification on the minimum data capture requirements for Appendix D certifiable fuel flowmeters. EPA has now stated that each fuel flowmeter must meet the minimum data capture requirement for continuous monitoring systems in 75.10(d)(1), the same requirement for CEMS.Read more »

EPA Issues Interim Part 75 Rule Concerning Quality-Assurance Requirements During COVID-19 National Emergency

epa federal building exterior
On April 17, 2020, the EPA Administrator issued Continuous Emission Monitoring; Quality Assurance Requirements During COVID-19 National Emergency (40 CFR § 75.68), interim final rule (IFR) to temporarily amend the Part 75 emission monitoring and reporting regulations for the Acid Rain Program, Cross-State Air Pollution Rule (CSAPR) and the NOx SIP Call. A copy of the IFR can be found here. Read more »