79 FR 27445

Proposed Rule. EPA proposed a rule directing state and tribal air agencies to characterize current air quality in areas with large sources of sulfur dioxide (SO2) emissions if such areas do not have sufficient air quality monitoring in place to identify maximum 1-hour SO2 concentrations.

Under the proposal, air agencies are expected to submit SO2 monitoring network modifications, if necessary, by July 2016, and any SO2 monitors necessary to satisfy the rule would be expected to be operational by Jan. 1, 2017.


79 FR 28439

Final Rule. EPA promulgated quality assurance and quality control (QA/QC) procedures for continuous opacity    monitoring systems (COMS) used  to demonstrate compliance with opacity standards specified in  New  Source  Performance  Standards  (NSPS). The QA/QC procedures codified by EPA in this rulemaking are known as Procedure 3.

They were originally issued as a direct final rule in 2012, but subsequently withdrawn due to adverse public comment. This rulemaking finalized the approval of Procedure 3 after EPA addressed these comments. The final rule takes effect on Nov. 12, 2014.


79 FR 32892

Proposed Rule. EPA proposed to withdraw any prior determination or presumption, for the 1997 8-hour ozone NAAQS and the 1997 PM2.5 NAAQS, that compliance with the Clean Air Interstate Rule (CAIR) or the NOx SIP Call automatically constitutes reasonably available control technology (RACT) or reasonable available control measures (RACM) for NOx  or SO2 emissions from electric generating units participating in these regional cap-and-trade programs.


79 FR 36879

Proposed Rule. EPA proposed revisions to the National Emission Standards for Hazardous Air Pollutants (NESHAP) for petroleum refineries. The proposed rule would include new requirements for monitoring, recordkeeping and reporting, and would make changes to provisions regarding emissions during startup, shutdown, or malfunction periods, in order to maintain consistency with recent court opinions on these issues. EPA is accepting comment on the proposed rule through Aug. 29, 2014.


79 FR 39241

Proposed Rule. EPA proposed to revise the NSPS for grain elevators. EPA is accepting public comment on the proposal through Oct. 7, 2014.


79 FR 41795

Proposed Rule. EPA proposed to revise the NSPS for municipal solid waste landfills. Along with the proposed rule, EPA also issued an advance notice of proposed rulemaking seeking public input on methods to reduce emissions from existing municipal solid waste landfills. See 79 FR 41771. EPA is accepting comment on both the proposed rule and advanced notice of proposed rulemaking through Sept. 15, 2014.


79 FR 43661

Final Rule. EPA amended 40 CFR  70.6(c)(5)(iii)(B) and 40 CFR 71.6(c)(5)(iii)(B), portions of the federal and state operating permits rules regarding compliance certifications. The amendments added the following sentence  to  the  rules:  “If  necessary, the owner or operator shall also identify any other material information that must be included in the certification to comply with section 113(c)(2) of the Act,  which prohibits knowingly making a false certification or omitting material information.” EPA stated that this sentence was inadvertently deleted from the rules in 2003. The revision takes effect on Aug. 27, 2014.