Environmental Protection Agency January 11, 2023 – Federal Register Recent Federal Regulation Documents
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Air Plan Approval; Tennessee; Eastman Chemical Company Nitrogen Oxides SIP Call Alternative Monitoring
The Environmental Protection Agency (EPA) is proposing to conditionally approve a source-specific State Implementation Plan (SIP) revision submitted by the State of Tennessee, through the Tennessee Department of Environment and Conservation (TDEC), through a letter dated August 11, 2021, which establishes alternative monitoring and reporting requirements under the Nitrogen Oxides (NOX) SIP Call.
Determination of Attainment by the Attainment Date, Clean Data Determination, and Approval of Base Year Emissions Inventory for the Imperial County, California Nonattainment Area for the 2012 Annual Fine Particulate Matter NAAQS
The Environmental Protection Agency (EPA) is determining that the Imperial County, California fine particulate matter (PM2.5) nonattainment area (``Imperial PM2.5 nonattainment area'') attained the 2012 annual PM2.5 national ambient air quality standards (NAAQS or ``standard'') by its December 31, 2021 ``Moderate'' area attainment date. This determination is based upon ambient air quality monitoring data from 2019 through 2021. We are also making a clean data determination (CDD) based on our determination that preliminary air quality monitoring data from 2022 indicate the Imperial PM2.5 nonattainment area continues to attain the 2012 annual PM2.5 NAAQS. As a result of this CDD, certain Clean Air Act (CAA) requirements that apply to the Imperial County Air Pollution Control District (ICAPCD or ``District'') are suspended for so long as the area continues to meet the 2012 annual PM2.5 NAAQS. The area remains nonattainment for the 2012 annual PM2.5 NAAQS until the area is redesignated to attainment. The EPA is also approving a revision to California's state implementation plan (SIP) consisting of the 2012 base year emissions inventory for the Imperial PM2.5 nonattainment area, submitted by the California Air Resources Board (CARB or ``State'') on July 18, 2018.
Designation of Areas for Air Quality Planning Purposes; California; Coachella Valley Ozone Nonattainment Area; Reclassification to Extreme
Under the Clean Air Act (CAA or ``Act''), the Environmental Protection Agency (EPA) is proposing to approve a request from the State of California to reclassify the Coachella Valley ozone nonattainment area from ``Severe-15'' to ``Extreme'' for the 2008 ozone national ambient air quality standards (NAAQS). This action does not reclassify any areas of Indian country within the boundaries of the Coachella Valley 2008 ozone nonattainment area. Upon final reclassification of the Coachella Valley ozone nonattainment area as an Extreme nonattainment area for the 2008 ozone NAAQS, the applicable attainment dates would be as expeditiously as practicable but no later than July 20, 2032. The EPA is proposing to establish a deadline of no later than 18 months from the effective date of reclassification for submittal of revisions to the Coachella Valley portion of the California SIP to meet additional requirements for Extreme ozone nonattainment areas. Lastly, the EPA is proposing to extend our previous limited approval of the motor vehicle emissions budgets to new budgets to be developed as part of a SIP submission meeting the Extreme area requirements for the Coachella Valley.
Partial Approval, Conditional Approval, and Partial Disapproval of Air Quality State Implementation Plans; Nevada; Infrastructure Requirements for Ozone
The EPA is proposing to approve in part, conditionally approve in part, and disapprove in part a state implementation plan (SIP) revision submitted by the State of Nevada pursuant to the requirements of the Clean Air Act (CAA or ``Act'') for the implementation, maintenance, and enforcement of the 2015 national ambient air quality standards (NAAQS) for ozone. As part of this action, we are proposing to reclassify a region of the State for emergency episode planning purposes with respect to ozone. Finally, we are proposing to approve a regulatory revision into the Nevada SIP. We are taking comments on this proposal and, after considering any comments submitted, plan to take final action.
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