CleanAir Flares

Refinery Sector Rule 2018 Amendments: Flare Impacts

Nov 20, 2018

On November 8, 2018, US EPA issued final amendments to the Refinery Sector Rule. These final amendments are based on EPA’s April 10, 2018 proposal. As November 19, this final rule has not been published in the Federal Register, so this analysis[…]


Btu per SQUARE FOOT? What the heck is EPA’s Flare Dilution Factor?

Oct 12, 2018

OK… This is a long one.


It’s Time to Rethink Flare Velocity Limits

Sep 26, 2018

US EPA’s flare velocity limits were originally issued in 1986. Since then, they have found their way into flare regulations around the world. They were developed following a series of EPA sponsored tests conducted in the 1980’s that examined how[…]


New Flare Consent Decree: WRB Refining/Phillips 66

Aug 20, 2018

On August 10, 2018, the US Department of Justice lodged a proposed consent decree with the United States District Court for the Southern District of Illinois in the lawsuit entitled United States and Illinois v. WRB Refining LP, et al., Civil[…]


EPA Responses to Refinery Flare AMELs Hit Federal Register

Apr 25, 2018

EPA today published their response to Alternative Means of Emission Limitation (AMEL) requests from four refineries and a chemical plant. These are: ExxonMobil (Baytown), Marathon (GBR and Garyville), Chalmette (Chalmette), and the chemical plant[…]


EPA Proposes Refinery Sector Rule Amendments - Part 1

Mar 20, 2018

On Monday, March 19, 2018, US EPA issued proposed amendments to the Refinery Sector Rule (RSR). These amendments are based on three petitions of reconsideration filed with the agency -- two of these were joint submissions by the American[…]


EPA Finalizes New Enclosed Flare AP-42 Emission Factors

Mar 20, 2018

On February 5, 2018, the EPA finalized its review of the existing VOC emissions factor for flares at natural gas production sites.

EPA evaluated test data available for flares at natural gas production sites, data from testing conducted by[…]


Shell Flare Consent Decree Lodged

Feb 16, 2018

On February 12, 2018, the Department of Justice lodged a proposed consent decree with the United States District Court for the Eastern District of Louisiana. The alleged violations involve flares used at a chemical plant owned and operated by Shell[…]


EPA Allows Refineries to Measure Flare Vent Gas NHV with Mass Spectrometers

Feb 6, 2018

EPA has published a broadly applicable approved alternative test method (ALT-124) allowing refineries subject to 40 CFR 63, Subpart CC to use mass spectrometers to measure the net heating value of flare vent gas. The original language of the[…]