The Environmental Protection Agency (EPA) is taking final action to find that five states failed to submit State Implementation Plan (SIP) revisions required by the Clean Air Act (CAA) in a timely manner to address reasonably available control technology (RACT) requirements associated with the 2016 Oil and Natural Gas Industry Control Techniques Guidelines (CTG) for reducing volatile organic compounds (VOC) in certain nonattainment areas for the 2008 ozone National Ambient Air Quality Standards (NAAQS) and in states in the ozone transport region (OTR).

The Environmental Protection Agency (EPA) is finalizing a partial approval and partial disapproval of an Arizona state implementation plan (SIP) revision for attaining the 2010 1-hour primary sulfur dioxide (SO<INF>2</INF>) national ambient air quality standard (NAAQS or ``standard'') for the Hayden SO<INF>2</INF> nonattainment area (NAA). This SIP revision (hereinafter called the ``Hayden SO<INF>2</INF> Plan'' or ``Plan'') includes Arizona's attainment demonstration and other elements required under the Clean Air Act (CAA or ``Act'').

The U.S. Environmental Protection Agency (EPA) is finalizing amendments to the National Emission Standards for Hazardous Air Pollutants (NESHAP) for Chemical Recovery Combustion Sources at Kraft, Soda, Sulfite, and Stand-alone Semichemical Pulp Mills, and the New Source Performance Standards (NSPS) for Kraft Pulp Mills constructed, reconstructed, or modified after May 23, 2013. The final rule clarifies how to set operating limits for smelt dissolving tank (SDT) scrubbers used at these mills and corrects cross-reference errors in both rules.

The U.S. Environmental Protection Agency (EPA) is finalizing amendments to the National Emission Standards for Hazardous Air Pollutants (NESHAP) for Chemical Recovery Combustion Sources at Kraft, Soda, Sulfite, and Stand-alone Semichemical Pulp Mills, and the New Source Performance Standards (NSPS) for Kraft Pulp Mills constructed, reconstructed, or modified after May 23, 2013. The final rule clarifies how to set operating limits for smelt dissolving tank (SDT) scrubbers used at these mills and corrects cross-reference errors in both rules.