Laws & Regulations
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Arkansas SIP: Prevention of Significant Deterioration Regulations, As approved by EPA 05/02/91 (56 FR 20137) at 52.170(c)(28) SIP effective 07/01/91
Arkansas Read Me: SIP Regulations Effective November 15, 2000
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Arkansas SIP: Reg 19, Chap 10: Regulations for the Control of Volatile Organic Compounds in Pulaski County, As approved by EPA March 4, 2015 (80 FR 11573) SIP effective April 3, 2015 (ARd18)
AR SIP: Reg 19, Chap 10: Regulations for the Control of Volatile Organic Compounds in Pulaski County
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Arkansas SIP: Reg 19, Chap 1 SIP effective 2007-05-14 (ARd07) to 2015-04-02
AR SIP Reg 19, Chap 1 SIP effective 2007-05-14 (ARd07) to 2015-04-02
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Per- and Polyfluoroalkyl Substances (PFAS)
Per- and Polyfluoroalkyl Substances (PFAS) and drinking water
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(Draft Permit) Town of Oxford, Oxford, ME, ME0102873
A public notice of a draft MEPDES permit for Town of Oxford, Oxford, ME, ME0102873.
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EPA Region 4 to Review Cleanups at 55 Southeast Superfund Sites in 2026
EPA Region 4 to Review Cleanups at 55 Southeast Superfund Sites in 2026
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Potable Water Treatment Facility General Permit (PWTF GP) for Massachusetts & New Hampshire
Documents, links & contacts for the Notice of Availability of the draft NPDES General Permit for Discharges from Potable Water Treatment Facilities in Massachusetts (MAG640000) and New Hampshire (NHG640000).
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2025 Interim Final Rule to Extend Compliance Deadlines
Interim Final Rule and related 2025 Oil and Gas actions
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Water Quality Standards: Regulations and Resources
Water Quality Standards are an important tool for restoring and maintaining healthy water quality for lakes, rivers and streams, estuaries, and other waters nationally and where you live.
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EPA OIG Podcasts
EPA OIG Podcasts
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EPCRA Milestones Through the Years (Text Version)
Timeline of the significant events that lead to the creation of EPCRA and subsequent actions.
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Asbestos in Plaster and Wall Systems
This collection of letters and clarification on final rules provides guidance on Asbestos National Emissions Standard for Hazardous Air Pollutants for asbestos-containing join compounds, and asbestos-containing materials found in plaster and wall systems.
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퍼클로로에틸렌 드라이 클리너의 공기 중 독성 표준에 대한 사실 자료
이 문서에는 퍼클로로에틸렌 드라이 클리너에서 발생하는 유해 공기의 배출을 줄이기 위한 규정 및 실현 정보를 요약하여 제공합니다.
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Transportation, Air Pollution and Climate Change
Learn how emissions reductions, advancements in fuels and fuel economy, and working with industry to find solutions to air pollution problems benefit human and environmental health, create consumer savings and are cost effective.
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State and Local Transportation Resources
This web area is designed to provide resources to state and local governments and their citizens about transportation and air quality.
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Federal Reading Rooms for Risk Management Plans (RMP)
Reading Rooms, listed here by state, are open to the public by either appointment or walk-in. You may access Off-Site Consequence Analysis (scenarios) portions of RMPs, and take notes but not remove or reproduce materials.
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Mobile Source Pollution and Related Health Effects
This site provides information on the health effects of air toxics from vehicles to both groups and individuals looking to further their subject knowledge, learn about EPA’s role in reducing air toxics, and find out how individuals can play a role.
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Poster: Report Fraud Waste and Abuse to the EPA OIG Hotline
The EPA OIG hotline receives complaints of fraud, waste, and abuse in EPA and U.S. Chemical Safety Board programs and operations including mismanagement or violations of law, rules, or regulations by EPA employees or program participants.
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State-only Hazardous Waste Subject to Resource Conservation and Recovery Act Manifests
This page contains data which identify the various state-only regulated wastes subject to RCRA manifest requirements under state law.
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Hazardous Air Pollutants
This area will provide an overview of hazardous air pollutants and EPA's approach to understanding and regulating them. The area will have access to regulations for industrial sources of air toxics.