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Approval and Promulgation of Air Quality State Implementation Plans; California; Plumas County; Moderate Area Plan for the 2012 PM2.5
The Environmental Protection Agency (EPA) is taking final action to approve a state implementation plan (SIP) revision submitted by the State of California to address Clean Air Act (CAA or ``Act'') requirements for the 2012 annual fine particulate matter (PM<INF>2.5</INF>) national ambient air quality standard (NAAQS or ``standard'') in the...
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Air Plan Approval; Tennessee; Nitrogen Oxides SIP Call Plan
The Environmental Protection Agency (EPA) is approving a State Implementation Plan (SIP) revision concerning nitrogen oxides (NO<INF>X</INF>) emissions submitted by the State of Tennessee, through the Tennessee Department of Environment and Conservation (TDEC), through a letter dated December 19, 2019, which revises the Tennessee Air Pollution...
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Air Plan Approval; Minnesota; Revision to Taconite Federal Implementation Plan
The Environmental Protection Agency (EPA) is revising a Federal implementation plan (FIP) addressing the requirement for best available retrofit technology (BART) for the United States Steel Corporation's (U.S. Steel) taconite plant located in Mt. Iron, Minnesota (Minntac or Minntac facility). We are revising the nitrogen oxides (NO<INF>X</INF>)...
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Air Plan Approval; KY; Updates to Attainment Status Designations
The Environmental Protection Agency (EPA) is taking final action to approve a State Implementation Plan (SIP) revision submitted by the Commonwealth of Kentucky, through the Kentucky Division for Air Quality (KDAQ), on December 9, 2019. The SIP revision updates the description and attainment status designations of geographic areas within the...
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Air Plan Approval; North Carolina; Revisions to Construction and Operation Permits
The Environmental Protection Agency (EPA) is taking final action to approve a revision to the North Carolina State Implementation Plan (SIP) submitted by the State of North Carolina through the North Carolina Department of Environmental Quality, Division of Air Quality (DAQ), on July 10, 2019. The SIP revision seeks to modify the State's...
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Air Plan Approval; North Carolina: Permits Requiring Public Participation
The Environmental Protection Agency (EPA) is approving a State Implementation Plan (SIP) revision submitted by the State of North Carolina, through the North Carolina Department of Environmental Quality (NCDEQ), Division of Air Quality, on July 10, 2019. This SIP revision seeks to modify the State's permitting program public participation...
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Approval and Promulgation of Implementation Plans; Colorado; Revisions to Regulation Number 7 and RACT Requirements for 2008 8-Hour Ozone Standard for the Denver Metro/North Front Range Nonattainment Area
The Environmental Protection Agency (EPA) is approving and conditionally approving State Implementation Plan (SIP) revisions submitted by the State of Colorado on May 31, 2017, May 14, 2018 and May 8, 2019. The revisions are to Colorado Air Quality Control Commission (Commission or AQCC) Regulation Number 7 (Reg. 7). The revisions to Reg. 7...
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Air Plan Approval; California; South Coast Air Quality Management District; Ventura County Air Pollution Control District
The Environmental Protection Agency (EPA) is taking final action to approve revisions to the South Coast Air Quality Management District (SCAQMD) and the Ventura County Air Pollution Control District (VCAPCD) portions of the California State Implementation Plan (SIP). These revisions concern emissions of volatile organic compounds (VOCs) from...
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Air Quality State Implementation Plans; Approval and Promulgation of Implementation Plans; Utah; Infrastructure Requirements for the 2015 Ozone National Ambient Air Quality Standards; Correction
On June 1, 2020, the Environmental Protection Agency (EPA) published a rulemaking proposing to approve multiple elements of the infrastructure SIP requirements for the 2015 ozone NAAQS for the State of Utah, while taking no action on three infrastructure elements (85 FR 33052). On September 16, 2020, we published a rulemaking taking final action...
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Air Plan Approval; Washington; Interstate Transport Requirements for the 2010 Sulfur Dioxide National Ambient Air Quality Standards
The Environmental Protection Agency (EPA) is approving the State Implementation Plan (SIP) revisions submitted by Washington on February 7, 2018 as meeting certain Clean Air Act (CAA) requirements for interstate transport of the 2010 1-hour Sulfur Dioxide (SO<INF>2</INF>) National Ambient Air Quality Standards (NAAQS). The EPA has determined...
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Air Plan Approval; Washington; Infrastructure Requirements for the 2010 Sulfur Dioxide and 2015 Ozone Standards
Whenever the Environmental Protection Agency (EPA) promulgates a new or revised National Ambient Air Quality Standard (NAAQS), the Clean Air Act requires each state to make a State Implementation Plan (SIP) submission to establish that its SIP provides for the implementation, maintenance, and enforcement of the revised NAAQS. This type of SIP...
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Air Plan Approval; Washington: Inspection and Maintenance Program
The Environmental Protection Agency (EPA) is approving a revision to the Washington State Implementation Plan (SIP) submitted by the State of Washington on June 2, 2019, through the Washington Department of Ecology. The revision, applicable in Clark, King, Pierce, Snohomish, and Spokane Counties, Washington, removes the Inspection and...
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Air Plan Approval; Massachusetts; Infrastructure State Implementation Plan Requirements for the 2015 Ozone Standard
The Environmental Protection Agency (EPA) is approving a State Implementation Plan (SIP) submission by the Commonwealth of Massachusetts. Except as noted below, this submission satisfies the infrastructure requirements of the Clean Air Act (CAA) for the 2015 ozone National Ambient Air Quality Standards (NAAQS). The infrastructure requirements...
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Review of the Ozone National Ambient Air Quality Standards
Based on the Environmental Protection Agency's (EPA's) review of the air quality criteria and the national ambient air quality standards (NAAQS) for photochemical oxidants including ozone (O<INF>3</INF>), the EPA is retaining the current standards, without revision.
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Review of the National Ambient Air Quality Standards for Particulate Matter
Based on the Environmental Protection Agency's (EPA's) review of the air quality criteria and the national ambient air quality standards (NAAQS) for particulate matter (PM), the Administrator has reached final decisions on the primary and secondary PM NAAQS. With regard to the primary standards meant to protect against fine particle exposures...
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Approval and Promulgation of Air Quality Implementation Plans; Utah; Regional Haze State and Federal Implementation Plans
The Environmental Protection Agency (EPA) is finalizing approval of State Implementation Plan (SIP) revisions submitted by the State of Utah on July 3, 2019, as supplemented on December 3, 2019, to satisfy certain regional haze requirements for the regional haze program's first implementation period (Utah SIP revisions). The EPA is approving the...
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Air Quality Implementation Plan; California; Northern Sierra Air Quality Management District; Stationary Source Permits
The Environmental Protection Agency (EPA) is finalizing a revision to the Northern Sierra Air Quality Management District (NSAQMD or ``District'') portion of the California State Implementation Plan (SIP). In this action, we are approving a rule submitted by the NSAQMD that governs the issuance of permits for stationary sources, which focuses on...
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Air Plan Approval; ID, Incorporation by Reference Updates and Rule Revisions
The Environmental Protection Agency (EPA) is approving the State Implementation Plan (SIP) revisions submitted by Idaho on June 5, 2019 and May 27, 2020. The submitted revisions update the incorporation by reference of specific Federal requirements and clarify source permitting requirements. The EPA finds that the changes are consistent with...
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Air Plan Approval; Ohio; Technical Amendment
The Environmental Protection Agency (EPA) is finalizing the removal of the air pollution nuisance rule from the Ohio State Implementation Plan (SIP) using a Clean Air Act (CAA) error correction provision. EPA has determined that this rule was not relied upon by Ohio to demonstrate implementation, maintenance or enforcement of any national...
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Air Plan Approval; California; Sacramento Metropolitan Air Quality Management District
The Environmental Protection Agency (EPA) is taking final action to approve revisions to the Sacramento Metropolitan Air Quality Management District (SMAQMD) portion of the California State Implementation Plan (SIP). These revisions concern emissions of volatile organic compounds (VOCs) from the surface coating operations of plastic parts and...