Laws & Regulations
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Nonattainment Areas for Criteria Pollutants (Green Book)
Areas of the country where air pollution levels persistently exceed the national ambient air quality standards may be designated "nonattainment." This site provides current information on nonattainment areas by state and pollutant.
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NPDES General Permit for Offshore Seafood Processors in Alaska
NPDES general permit and supporting documents for offshore seafood processors in Alaska.
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UIC Permit for Redoubt and West McArthur River Units, Cook Inlet, Alaska
EPA Underground Injection Control permit for the Redoubt Unit and West McArthur Unit, Cook Inlet, Alaska.
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Stone Quarrying, Crushing and Screening Facilities General Air Quality Permit Request for Coverage: Camas Gravel Company - Casino Pit
EPA's approval of coverage under the SQCS general air permit for Camas Gravel Company, Nez Perce Indian Reservation, Idaho.
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NPDES Permit for City of Winchester Wastewater Treatment Plant in Idaho
EPA's NPDES wastewater permit for the City of Winchester on the Nez Perce Reservation Idaho.
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NPDES Permit for Metlakatla Indian Community Sewer Treatment Plant
EPA's NPDES wastewater permit for the Metlakatla Indian Community Sewer Treatment Plant in Alaska.
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NPDES Permit for Ketchikan Charcoal Point Wastewater Treatment Plant in Alaska
EPA's NPDES wastewater permit and 301(h) variance for the Ketchikan Charcoal Point Wastewater Treatment Plant in Alaska.
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EPA-Approved Monterey Bay Unified Air District Regulations in the California SIP
EPA approved and compiled rules and regulations for the Monterey Bay Unified Air Pollution Control District (APCD) portion of the California State Implementation Plans (SIP).
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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).