Incorporation by reference

Air Plan Approval; Indiana; Monitoring Requirements

The Environmental Protection Agency (EPA) is approving, under the Clean Air Act (CAA), a revision to Indiana's State Implementation Plan (SIP) to address changes to its air emissions monitoring rules for Portland cement plants. Indiana revised its rules for Portland cement plants to update the monitoring of particulate matter (PM) emissions to allow an additional monitoring option. This additional monitoring option is consistent with EPA's recent revisions to Federal requirements for Portland cement plants. EPA proposed to approve this action on March 25, 2021 and received no comments.

Publication Date: 
Friday, June 25, 2021 - 4:00am

Air Plan Approval; Nebraska; Revisions to Title 129 of the Nebraska Administrative Code; Chapter 39 Visible Emissions From Diesel-Powered Motor Vehicles

The Environmental Protection Agency (EPA) is taking final action to approve a revision to the State Implementation Plan (SIP) for the State of Nebraska. This final action will amend the SIP to revise title 129 of the Nebraska Administrative Code by removing a portion of the SIP that addresses visible emissions from diesel-powered motor vehicles. Visible emissions from diesel-powered motor vehicles are addressed in the state statute. The revisions remove duplicative language that is redundant to the state statute.

Publication Date: 
Friday, June 25, 2021 - 4:00am

Air Plan Approval; Iowa; State Implementation Plan and State Plans for Designated Facilities and Pollutants

The Environmental Protection Agency (EPA) is taking final action to approve revisions to the Iowa State Implementation Plan (SIP) and is also approving revisions to the Iowa Operating Permit Program. The revisions include updating definitions, regulatory references, requiring facilities to submit electronic emissions inventory information under the state's Title V permitting program, and updating references for the most recent federally approved minimum specifications and quality assurance procedures for performance evaluations of continuous monitoring systems.

Publication Date: 
Friday, June 25, 2021 - 4:00am

Approval of Air Quality Implementation Plans; California; Eastern Kern; 8-Hour Ozone Nonattainment Area Requirements

The Environmental Protection Agency (EPA) is taking final action to approve, or conditionally approve, all or portions of three state implementation plan (SIP) revisions submitted by the State of California to meet Clean Air Act (CAA or ``the Act'') requirements for the 2008 8-hour ozone national ambient air quality standards (NAAQS or ``standards'') in the Eastern Kern, California (``Eastern Kern'') ozone nonattainment area.

Publication Date: 
Friday, June 25, 2021 - 4:00am

Air Quality Implementation Plan; California; Mendocino County Air Quality Management District; Stationary Source Permits

The Environmental Protection Agency (EPA) is taking final action to approve revisions to the Mendocino County Air Quality Managment District (MCAQMD or ``District'') portion of the California State Implementation Plan (SIP). These revisions concern the District's prevention of significant deterioration (PSD) permitting program for new and modified stationary sources of air pollution. We are approving these local rules pursuant to requirements under part C of title I of the Clean Air Act as amended in 1990 (CAA or the ``Act'').

Publication Date: 
Friday, June 25, 2021 - 4:00am

Air Plan Approval; Illinois; Multi-Pollutant Standards Rule, Control of Emissions From Large Combustion Sources

The Environmental Protection Agency (EPA) is approving a revision to the Illinois State Implementation Plan (SIP) to amend requirements applicable to certain coal-fired electric generating units (EGUs) in the Illinois Administrative Code, also known as the Multi- Pollutant Standards (MPS) Rule. On January 23, 2020, the Illinois Environmental Protection Agency (IEPA) submitted a request to amend the provisions of the MPS Rule in the Illinois regional haze SIP.

Publication Date: 
Friday, June 25, 2021 - 4:00am

Approval and Promulgation of Implementation Plans; Colorado; Revisions to Regulation Number 7; Aerospace, Oil and Gas, and Other RACT Requirements for 2008 8-Hour Ozone Standard for the Denver Metro/North Front Range Nonattainment Area

The Environmental Protection Agency (EPA) is proposing approval of State Implementation Plan (SIP) revisions submitted by the State of Colorado on May 14, 2018, May 8, 2019, and May 13, 2020. The revisions are to Colorado Air Quality Control Commission (Commission or AQCC) Regulation Number 7 (Reg. 7). The revisions to Reg.

Publication Date: 
Tuesday, June 22, 2021 - 4:00am

Air Plan Approval; Arizona; Stationary Sources; New Source Review Updates

The Environmental Protection Agency (EPA) is taking final action to approve revisions to the Arizona Department of Environmental Quality's (ADEQ) portion of the Arizona State Implementation Plan (SIP) that were submitted to the EPA by the ADEQ. These revisions concern the ADEQ's SIP-approved rules for the issuance of New Source Review (NSR) permits for stationary sources under the Clean Air Act (CAA or Act).

Publication Date: 
Wednesday, June 16, 2021 - 4:00am

Air Plan Approval; Illinois; Volatile Organic Material Definition Update

The Environmental Protection Agency (EPA) is approving a revision to the Illinois State Implementation Plan (SIP). The revision is amending the Illinois Administrative Code (IAC) by updating the definition of volatile organic material (VOM) and volatile organic compounds (VOC) to exclude (Z) -1,1,1,4,4,4-hexafluorobut-2-ene. This revision is consistent with an EPA rulemaking in 2018, which exempted this compound from the Federal definition of VOC on the basis that the compound makes a negligible contribution to tropospheric ozone formation.

Publication Date: 
Wednesday, June 16, 2021 - 4:00am

Air Plan Approval; Michigan; Part 9 Miscellaneous Rule

The Environmental Protection Agency (EPA) is approving a revision to Michigan's State Implementation Plan (SIP). The submittal, by the Michigan Department of Environment, Great Lakes, and Energy (EGLE) on December 18, 2020, incorporates administrative changes to Michigan's Air Pollution Control Rules, Part 9, ``Emissions Limitations and Prohibitions--Miscellaneous''. This revision supports Michigan's effort to consolidate all of the approved adoption by reference rules into Part 9.

Publication Date: 
Wednesday, June 16, 2021 - 4:00am

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