Laws & Regulations
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Clean Air Act Permit Actions in EPA's Pacific Southwest (Region 9)
Clean Air Act (CAA) pending and completed permit actions in EPA's Pacific Southwest (Region 9).
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Approval of Request for Coverage under General Air Quality Permit; Cahuilla Springs Trading Post, Coachella, CA
Approval of Request for Coverage under the General Air Quality Permit for New or Modified Minor Source Gasoline Dispensing Facilities in Indian Country within California: Cahuilla Springs Trading Post, Coachella, CA.
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NPDES Permit for City of Culdesac Wastewater Treatment Plant in Idaho
EPA's NPDES wastewater permit for the City of Culdesac on the Nez Perce Reservation in Idaho.
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NPDES Permit for PotlatchDeltic in St. Maries, Idaho
EPA's NPDES wastewater permit for PotlatchDeltic Land and Lumber in St. Maries, Idaho.
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NPDES Permit for Taholah Village Wastewater Treatment Plant in Washington
EPA's NPDES wastewater permit for the Taholah Village Wastewater Treatment Plant in Washington.
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U.S. State and Local Waste and Materials Characterization Reports
This webpage contains some state reports about recycling and waste management.
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Criminal Press Releases - 2026
This is a list of press releases announcing results of EPA criminal cases adjudicated in U.S. courts for 2022.
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NSR 90-Day Review Background Paper
NSR 90-Day Review Background Paper
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New Source Review Report to the President
New Source Review Report to the President
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Supplemental Analysis of the Environmental Impact of the 2002 Final NSR Improvement Rules
Supplemental Analysis of the Environmental Impact of the 2002 Final NSR Improvement Rules
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Emission Reduction Banking Manual
This document is part of the NSR Policy and Guidance Database
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Summary of Mendenhall Valley Particulate Matter (PM-10) Limited Maintenance Plans
Summary of the Mendenhall Valley particulate matter (PM-10) limited maintenance plan under the Alaska air quality SIP.
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Summary of Mendenhall Valley Particulate Matter (PM-10) Attainment Plan
Summary of the Mendenhall Valley particulate matter (PM-10) attainment plan under the Alaska air quality SIP.
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MOVES Nonroad Technical Reports
Although NONROAD is now incorporated into the MOtor Vehicle Emission Simulator (MOVES) model, these technical reports still apply to its inputs and algorithms.
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MOVES Algorithms
This HTML document was generated by MOVES2014a code. It provides a hyperlinked reference to detailed technical information on MOVES code modules and database tables.
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Independent Peer Review of the MOVES Design and Emissions Analysis Plans, and Addendum
Southwest Research Institute (SwRI) prepared this report for a work assignment under the EPA contract “Testing and Analytical Support for Regulation of Motor Vehicles, Engines, Fuels, and Fuel Additives.”
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Summary of Eagle River Particulate Matter (PM-10) Maintenance Plans
Summary of the Eagle River particulate matter (PM-10) limited maintenance plan and 2nd 10-year maintenance plan under the Alaska air quality SIP.
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Region 6 Response to the Request for Correction 04023 NPC Services, Inc.
Letter concerning Request for Correction 04023