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Proposed Rule 11 Sep 2025 ozone, particulate matter, incorporation by reference, environmental protection, nitrogen dioxide, epa, california, reporting and recordkeeping requirements, environmental regulations, intergovernmental relations, compliance, air pollution control, volatile organic compounds, air quality, mojave desert

🌬️Proposed Revisions to Mojave Desert Air Quality Regulations

The Environmental Protection Agency (EPA) is proposing to approve revisions to the Mojave Desert Air Quality Management District (MDAQMD or "District") portion of the California State Implementation Plan (SIP). These revisions concern amended or rescinded prohibitory and administrative rules that regulate air pollutants under the Clean Air Act (CAA or "Act"). We are proposing to rescind numerous requirements from the District's portion of the California SIP because the requirements can be replaced by more current requirements. We are taking comments on this proposal and plan to follow with a final action.

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Proposed Rule 24 Jul 2025 compliance, environmental protection, regulation, environmental, administrative practice and procedure, reporting and recordkeeping requirements, incorporation by reference, intergovernmental relations, ozone, air pollution control, volatile organic compounds, air quality, nitrogen dioxide, particulate matter, california, permitting, mojave desert

🌍EPA Proposes Conditional Approval for Mojave Desert Air Permits

The Environmental Protection Agency (EPA) is proposing conditional approval of five permitting rules as a revision to the Mojave Desert Air Quality Management District (MDAQMD) portion of the California State Implementation Plan (SIP). These are revisions to the District's New Source Review (NSR) air permitting program rules for new and modified sources of air pollution under the Clean Air Act (CAA or "Act"). The submitted rules address deficiencies identified in a previous limited disapproval action and incorporate other revisions related to the NSR permitting requirements. If finalized, this action will update the MDAQMD's current SIP with the revised rules. As a separate action in this Federal Register, we are making an interim final determination that will stay or defer the imposition of CAA sanctions associated with our previous limited disapproval action.

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Rule 19 May 2025 ozone, california, epa, environmental protection, mojave desert, air pollution control, carbon monoxide, air quality, intergovernmental relations, emissions, nitrogen oxides, compliance, reporting and recordkeeping requirements, particulate matter, incorporation by reference

🌫️EPA Approves Air Quality Regulation for Mojave Desert Region

The Environmental Protection Agency (EPA) is taking final action to approve a revision to the Mojave Desert Air Quality Management District (MDAQMD) portion of the California State Implementation Plan (SIP). This revision concerns emissions of oxides of nitrogen (NO<INF>X</INF>) from industrial, institutional, and commercial boilers, steam generators, and process heaters. We are approving a local rule that regulates these emission sources under the Clean Air Act (CAA or "Act").

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