EPA Power Plant & Emissions Compliance
Material regulatory developments from Environmental Protection Agency are tracked daily by Cresthaven Analytics. Over the last 90 days, 20 material briefs relevant to professionals operating in the energy, power & commodities sector have been published below. Each brief is sourced directly from the primary regulatory feed, summarized for institutional readers, and scored for materiality.
Recent material activity
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EPA grants final SIP approval for Missouri petroleum liquid storage and transfer emission controls in St. Louis
The EPA on July 23, 2026 gave final approval to revisions of the Missouri State Implementation Plan governing emission controls for petroleum liquid storage, loading, and transfer in the St. Louis area. The revisions adj…
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EPA proposes to approve Pennsylvania SIP revision relaxing RACT requirements for single natural gas compressor station
The EPA published a proposed rule on July 23, 2026 to approve a Pennsylvania state implementation plan revision affecting source-specific air emission control requirements at the Equitrans, Inc. Hartson Compressor Statio…
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EPA proposes to approve New Jersey RACT certifications for 2008 and 2015 ozone air quality standards
EPA published a proposed rule on July 23, 2026 to approve New Jersey's State Implementation Plan revisions certifying Reasonably Available Control Technology requirements for two ozone standards. The proposal also addres…
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EPA issues objection order on Louisiana Title V operating permit for Mitsubishi Chemical America Geismar facility
On July 16, 2026, the EPA issued an order objecting to a Louisiana state-issued Title V operating permit for Mitsubishi Chemical America's Geismar facility. The order responds to a citizen petition and requires Louisiana…
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EPA finalizes approval of seven AVAQMD permitting rules revising California SIP New Source Review requirements
On July 16, 2026, the EPA finalized approval of seven permitting rules as a revision to the Antelope Valley Air Quality Management District portion of the California State Implementation Plan. The action resolves deficie…
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EPA finalizes approval of Pennsylvania VOC emissions control plan under federal air quality standards
On July 16, 2026, the EPA published a final rule approving Pennsylvania's revised state implementation plan for reasonably available control technology applied to volatile organic compound sources. The approval incorpora…
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EPA issues interim final determination staying sanctions against Pennsylvania over VOC ozone control requirements
The EPA issued an interim final determination on July 16, 2026, finding that Pennsylvania has submitted state implementation plan revisions satisfying volatile organic compound control technology requirements under the 2…
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EPA issues technical correction to stationary combustion and gas turbine New Source Performance Standards review
On July 16, 2026, the EPA published a correction to its ongoing New Source Performance Standards review for stationary combustion turbines and stationary gas turbines. The correction addresses technical or procedural err…
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EPA approves Missouri SIP revision tightening NOx emission controls on large stationary internal combustion engines
On July 15, 2026, the EPA published a final air plan approval incorporating Missouri's revised State Implementation Plan rules for nitrogen oxide emissions from large stationary internal combustion engines. The approval …
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EPA approves New York source-specific air quality implementation plan for Castleton Power LLC facility
On July 15, 2026, the EPA granted final approval of a source-specific State Implementation Plan revision submitted by New York for the Castleton Power LLC facility. The approval establishes federally enforceable emission…
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EPA approves Wisconsin source-specific SIP revision governing Oak Creek Power Plant air emissions
The EPA published a final air plan approval on July 15, 2026 for a Wisconsin source-specific State Implementation Plan revision covering the Oak Creek Power Plant. The action incorporates facility-level emission limitati…
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EPA issues ANPRM on general permit pathway for coal combustion residuals disposal under federal CCR permit program
The EPA published an advance notice of proposed rulemaking on July 14, 2026, seeking comment on whether a general permit mechanism could provide temporary coverage for coal combustion residuals units. The notice follows …
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EPA proposes MY 2027 heavy-duty engine compliance amendments, nonconformance penalties, and revised SCR inducement rules
The EPA published a proposed rule on July 14, 2026 that revises compliance provisions, test procedures, useful life periods, and emission warranty periods for model year 2027 and later heavy-duty highway engines. The pro…
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EPA grants Alabama full primacy over coal combustion residuals permitting under federal solid waste law
The EPA approved Alabama's state coal combustion residuals permit program on July 14, 2026, granting the state primacy to administer CCR disposal regulations in place of the federal program. Direct permitting and enforce…
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EPA finalizes attainment redesignation for St. Clair SO2 nonattainment area in southeast Michigan
The EPA issued a final rule on July 9, 2026 redesignating the partial St. Clair, Michigan nonattainment area to attainment for the 2010 one-hour sulfur dioxide NAAQS. The rule also approves Michigan's maintenance plan an…
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EPA proposes to grant states broader discretion over public participation in minor air permitting programs
The EPA published a proposed rule on July 7, 2026, to revise public participation requirements for minor New Source Review programs incorporated into State Implementation Plans. The proposal would allow state and local a…
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EPA approves Oklahoma SIP revisions updating New Source Review permitting program and general SIP provisions
On July 2, 2026, the EPA issued final approval of identified portions of Oklahoma's State Implementation Plan revisions submitted between 2002 and 2025. The action updates Oklahoma's New Source Review permit program and …
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EPA proposes federal backstop plan for existing solid waste incinerators under revised 2025 emission guidelines
The EPA published a proposed federal plan on July 2, 2026 to implement revised emission guidelines for existing other solid waste incineration units in states and tribal lands that fail to submit approvable compliance pl…
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EPA approves Ohio SIP revisions satisfying Cleveland moderate ozone nonattainment RACT requirements under 2015 standard
The EPA approved source-specific State Implementation Plan revisions submitted by Ohio on June 26, 2026. The approval covers VOC and nitrogen oxide RACT requirements for the Cleveland moderate nonattainment area and conf…
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EPA finalizes Ohio SIP revisions for VOC and NOx RACT requirements across nine named industrial facilities
The EPA approved revisions to Ohio's State Implementation Plan on June 26, 2026, addressing VOC and NOx RACT requirements for the Cleveland moderate nonattainment area and the Cincinnati maintenance area under the 2015 o…
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