Laws & Regulations
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EPA-Approved Northern Sierra Air District Regulations in the California SIP
EPA approved and compiled rules and regulations for the Northern Sierra Air Quality Management District (AQMD) portion of the California State Implementation Plan (SIP).
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EPA-Approved San Luis Obispo County APCD Regulations in the California SIP
EPA approved and compiled rules and regulations for the San Luis Obispo County Air Pollution Control District (APCD) portion of the California State Implementation Plan (SIP).
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EPA-Approved Santa Barbara Air District Regulations in the California SIP
EPA approved and compiled rules and regulations for the Santa Barbara Air Pollution Control District (APCD) portion of the California State Implementation Plan (SIP).
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EPA-Approved Tuolumne County Air Pollution Control District Regulations in the California SIP
EPA approved and compiled rules and regulations for the Tuolumne County Air Pollution Control District (APCD) portion of the California State Implementation Plan (SIP).
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Summary of Eugene-Springfield PM-10 Limited Maintenance Plan
Summary of Eugene-Springfield PM-10 Limited Maintenance Plan under the Oregon air quality State Implementation Plan (SIP).
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West Silver Valley Fine Particulate Matter Maintenance Plan
Summary of the West Silver Valley PM2.5 Maintenance Plan under the air quality State Implementation Plan (SIP) for Idaho.
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EPA-Approved Modoc County Air District Regulations in the California SIP
EPA approved and compiled rules and regulations for the Modoc County Air Pollution Control District (APCD) portion of the California State Implementation Plan (SIP).
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Summary of Northern Ada County (Boise) Second 10-Year Carbon Monoxide Limited Maintenance Plan
Summary of the Northern Ada County (Boise) Second 10-Year Carbon Monoxide Limited Maintenance Plan under the Idaho air quality State Implementation Plan (SIP).
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Summary of Medford Carbon Monoxide (CO) 2nd 10-year Limited Maintenance Plan
Summary of Medford Carbon Monoxide (CO) 2nd 10-year Limited Maintenance Plan under the Oregon air quality State Implementation Plan (SIP).
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Summary of La Grande PM-10 Maintenance Plan
Summary of La Grande PM-10 Maintenance Plan under the Oregon air quality State Implementation Plan (SIP).
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EPA Approved Air Quality Implementation Plans in American Samoa
EPA-approved air quality implementation plans (SIPs, FIPs, TIPs) in the territory of American Samoa.
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Summary of Oakridge PM2.5 Attainment Plan
Summary of the Oakridge-Westfir particulate matter (PM2.5) attainment plan under the Oregon air quality State Implementation Plan (SIP).
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EPA-Approved Local Jurisdiction Ordinances and Municipal Code: Coachella Valley Jurisdictions; Town of Mammoth, City of Portola
EPA approved and compiled California Local Jurisdiction Ordinances and Municipal Code for Coachella Valley Jurisdictions, Town of Mammoth, and the City of Portola, incorporated by reference in the applicable State Implementation Plan (SIP).
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EPA Approved State-Wide Statutes in the Arizona SIP
EPA approved statutes for the Arizona State Implementation Plan (SIP). EPA's Pacific Southwest Office maintains these tables and will update them to reflect any changes the official tables codified in the Code of Federal Regulations.
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EPA-Approved the Mariposa County Air Pollution Control District in the California SIP
EPA approved and compiled rules and regulations for the Mariposa County Air Pollution Control District (APCD) portion of the California State Implementation Plan (SIP).
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EPA-Approved Lassen County Air Pollution Control District Regulations in the California SIP
EPA approved and compiled rules and regulations of the Lassen County Air Pollution Control District (APCD) portion of the California State Implementation Plan (SIP).
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EPA-Approved Lake County Air Quality Management District Regulations in the California SIP
EPA approved and compiled rules and regulations for the Lake County Air Quality Management District (LCAQMD) portion of the California State Implementation Plan (SIP).
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EPA-Approved Colusa County Air Pollution Control District Regulations in the California SIP
EPA approved and compiled rules and regulations for the Colusa County Air Pollution Control District (APCD) portion of the California State Implementation Plan (SIP).
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EPA-Approved Bay Area Air Quality Management District Regulations in the California SIP
EPA approved and compiled rules and regulations for the San Francisco Bay Area Air Quality Management District (BAAQMD) portion of the California State Implementation Plan (SIP).
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Summary of Klamath Falls PM-2.5 Attainment Plan
Summary of Klamath Falls PM-2.5 Attainment Plan under the Oregon air quality State Implementation Plan (SIP).