Incorporation by reference

Approval and Promulgation of the Northern Cheyenne Tribe's Tribal Implementation Plan; Northern Cheyenne Tribe; Open Burning Permit Program and Maintenance of the National Ambient Air Quality Standards

EPA is approving a Tribal Implementation Plan (TIP) submitted by the Northern Cheyenne Tribe (Tribe) on September 25, 2017, as described in our February 26, 2021 proposal. The TIP includes ambient air quality standards and provisions for an open burning permit program, enforcement and appeals, and emergency authority.

Publication Date: 
Thursday, February 10, 2022 - 4:00am

Air Plan Approval; Montana; Administrative Rule Revisions: 17.8.334

The Environmental Protection Agency (EPA or Agency) is taking final action to approve a revision to Montana's State Implementation Plan (SIP). On July 6, 2016, the Governor of Montana submitted to EPA a revision to the Montana SIP that removed one section of the Administrative Rules of Montana (ARM) pertaining to aluminum plants. In this document, EPA is finalizing approval of the removal of this section from the SIP. EPA determined the provision was inconsistent with Clean Air Act (CAA) requirements and EPA issued a SIP call for the State to revise the provision on June 12, 2015.

Publication Date: 
Thursday, February 10, 2022 - 4:00am

Air Plan Approval; Michigan; Base Year Emissions Inventory for the 2010 Sulfur Dioxide Standard

The Environmental Protection Agency (EPA) is approving, under the Clean Air Act (CAA), revisions to the State Implementation Plan (SIP) submitted by the Michigan Department of Environment, Great Lakes, and Energy (EGLE) on June 30, 2021. The revisions address the emission inventory requirements for the St. Clair County nonattainment area under the 2010 sulfur dioxide (SO<INF>2</INF>) National Ambient Air Quality Standard (NAAQS or standard).

Publication Date: 
Wednesday, February 9, 2022 - 4:00am

Determination To Defer Sanctions; Arizona; Maricopa County; Power Plants

The Environmental Protection Agency (EPA) is making an interim final determination that the Arizona Department of Environmental Quality (ADEQ) has submitted a revised rule on behalf of the Maricopa County Air Quality Department (MCAQD or County) that corrects deficiencies in its Clean Air Act (CAA or Act) state implementation plan (SIP) provisions concerning ozone nonattainment requirements for controlling oxides of nitrogen (NO<INF>X</INF>) at power plants.

Publication Date: 
Tuesday, February 8, 2022 - 4:00am

Finding of Failure To Attain the 2008 Lead and 2010 Sulfur Dioxide Standards; Arizona; Hayden and Miami Nonattainment Areas

The Environmental Protection Agency (EPA) is determining that the Hayden lead (Pb) nonattainment area (NAA) failed to attain the 2008 Pb primary and secondary national ambient air quality standards (NAAQS or ``standards'') by the applicable attainment date of October 3, 2019. The EPA is also determining that the Hayden and Miami sulfur dioxide (SO<INF>2</INF>) NAAs failed to attain the 2010 1-hour SO<INF>2</INF> primary NAAQS by the applicable attainment date of October 4, 2018.

Publication Date: 
Monday, January 31, 2022 - 4:00am

Partial Approval and Partial Disapproval of Air Quality Implementation Plans and Determination of Attainment by the Attainment Date; California; San Joaquin Valley Serious Area and Section 189(d) Plan for Attainment of the 1997 24-hour PM2.5

The Environmental Protection Agency (EPA) is taking final action to approve in part and disapprove in part portions of state implementation plan (SIP) revisions submitted by California to address Clean Air Act (CAA) requirements for the 1997 24-hour fine particulate matter (PM<INF>2.5</INF>) national ambient air quality standards (NAAQS or ``standards'') in the San Joaquin Valley PM<INF>2.5</INF> nonattainment area.

Publication Date: 
Friday, January 28, 2022 - 4:00am

Air Plan Approval; Michigan; Finding of Failure To Attain the 2010 Sulfur Dioxide Primary National Ambient Air Quality Standard for the Detroit Nonattainment Area

The Environmental Protection Agency (EPA) is determining that the Detroit sulfur dioxide (SO<INF>2</INF>) nonattainment area failed to attain the 2010 primary 1-hour SO<INF>2</INF> national ambient air quality standard (NAAQS or ``standard'') by the applicable attainment date of October 4, 2018. This determination is based upon air quality modeling using actual and allowable emissions.

Publication Date: 
Friday, January 28, 2022 - 4:00am

Air Plan Approval; Delaware; Revision of Regulation for Sulfur Content of Fuel Oil

The Environmental Protection Agency (EPA) is proposing to approve a state implementation plan (SIP) revision submitted by the State of Delaware. This revision pertains to the reduction of the maximum allowable sulfur content limit for distillate fuels, from a current limit of 3,000 parts per million (ppm) (0.3% by weight) to 15 ppm (0.0015% by weight) and residential fuels from a current limit of 1.0% by weight to 0.5% by weight. This revision also adds requirements for sampling and testing along with certification and recordkeeping.

Publication Date: 
Friday, January 28, 2022 - 4:00am

Air Plan Approval; Missouri Redesignation Request and Associated Maintenance Plan for the Jefferson County 2010 SO2

On December 27, 2017, the State of Missouri submitted a request for the Environmental Protection Agency (EPA) to redesignate the Jefferson County, Missouri, 2010 1-hour sulfur dioxide (SO<INF>2</INF>) National Ambient Air Quality Standard (NAAQS) nonattainment area to attainment and to approve a State Implementation Plan (SIP) revision containing a maintenance plan for the area. The State provided supplemental information on: May 15, 2018; February 7, 2019; February 25, 2019; and April 9, 2021.

Publication Date: 
Friday, January 28, 2022 - 4:00am

Approval and Promulgation of Air Quality Implementation Plans; Pennsylvania; Reasonably Available Control Technology Determinations for Case-by-Case Sources Under the 1997 and 2008 8-Hour Ozone National Ambient Air Quality Standards

The Environmental Protection Agency (EPA) is approving multiple state implementation plan (SIP) revisions submitted by the Commonwealth of Pennsylvania. These revisions were submitted by the Pennsylvania Department of Environmental Protection (PADEP) to establish and require reasonably available control technology (RACT) for 23 major volatile organic compound (VOC) and/or nitrogen oxide (NO<INF>X</INF>) emitting facilities pursuant to the Commonwealth of Pennsylvania's conditionally approved RACT regulations.

Publication Date: 
Wednesday, January 26, 2022 - 4:00am

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