EPA withdrew the final rule, "Revisions to Procedure 2–Quality Assurance Requirements for Particulate Matter Continuous Emission Monitoring Systems at Stationary Sources."

EPA withdrew the final rule, "Revisions to Procedure 2–Quality Assurance Requirements for Particulate Matter Continuous Emission Monitoring Systems at Stationary Sources."

EPA withdrew the final rule, "Revisions to Procedure 2–Quality Assurance Requirements for Particulate Matter Continuous Emission Monitoring Systems at Stationary Sources."

EPA withdrew the final rule, "Revisions to Procedure 2–Quality Assurance Requirements for Particulate Matter Continuous Emission Monitoring Systems at Stationary Sources."

EPA finalized emission allowance allocations to certain units under the new unit set-aside provisions of the Cross-State Air Pollution Rule for the 2016 compliance year.

EPA finalized emission allowance allocations to certain units under the new unit set-aside provisions of the Cross-State Air Pollution Rule for the 2016 compliance year.

EPA finalized emission allowance allocations to certain units under the new unit set-aside provisions of the Cross-State Air Pollution Rule for the 2016 compliance year.

SIP Proposal: Ohio (remove the 7.8 pounds per square inch low Reid Vapor Pressure fuel requirements for the Cincinatti and Dayton nonattainment areas).

SIP Proposal: Ohio (remove the 7.8 pounds per square inch low Reid Vapor Pressure fuel requirements for the Cincinatti and Dayton nonattainment areas).

SIP Proposal: Ohio (remove the 7.8 pounds per square inch low Reid Vapor Pressure fuel requirements for the Cincinatti and Dayton nonattainment areas).