Laws & Regulations
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EPA Region 10 Enforcement Actions to Protect Drinking Water
PDFs for recent EPA Region 10 actions.
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K.P. Kauffman Company (KPK) Consent Decree
K.P. Kauffman Company Consent Decree January 21, 2020
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Barnett RDC Well No. 1
MRV Plan and Decision for Barnett RDC Well No. 1
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Direct Final Rule for Control of Air Pollution From New Motor Vehicles; Revisions to Motor Vehicle Diesel Fuel Sulfur Transition Provisions; and Technical Amendments to the Highway Diesel, Nonroad Diesel, and Tier 2 Gasoline Programs
Includes rule summary and link to Federal Register notice.
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Guidance on Compatibility of UST Systems with Ethanol Blends Greater Than 10 Percent and Biodiesel Blends Greater Than 20 Percent
EPA guidance on complying with the federal compatibility requirement for underground storage tank (UST) systems storing gasoline containing greater than 10 percent ethanol or diesel containing greater than 20 percent biodiesel.
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Aquatic Life Fact Sheet for Naphthalene: (Aquatic Life - acute concentration), New York State Department of Environmental Conservation
Introduction and summary of information and data for napthalene
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Human Health Fact Sheet for Vinyl chloride: (Human Health Carcinogen - fish ingestion only), Ohio Environmental Protection Agency
Critera summary, exposure data and references for vinyl chloride
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Aquatic Life Fact Sheet for cis-1,2-Dichloroethylene: (Aquatic Life - acute concentration), Indiana Department of Environmental Management
CIS-1,2-DICHLOROETHYLENE water quality standards
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Final Rule: Regulation To Mitigate the Misfueling of Vehicles and Engines With Gasoline Containing Greater Than Ten Volume Percent Ethanol and Modifications to the Reformulated and Conventional Gasoline Programs
EPA is establishing several measures to mitigate misfueling of other vehicles, engines and equipment with E15 and the potential emissions consequences of misfueling.
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Additional Resources for 2015 Underground Storage Tank Regulations
Learn about underground storage tank (UST) regulations revised in 2015.
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Methods Update Rule - 2021
Announcement of EPA's 2019 proposed Methods Update Rule. The proposal includes revised Clean Water Act analytical methods that would be codified in 40 CFR Part 136.
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Photographic Processing Effluent Guidelines
Federal Register notice and support documents for Photo Processing Effluent Guidelines (40 CFR Part 459)
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State Delivery Prohibition Programs
Learn about state delivery prohibition programs, which prohibit product delivery to underground storage tanks that have one or more compliance violations.
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Cooling Water Intakes Implementation Support Documents
Documents supporting implementation of the Cooling Water Intake regulations.
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Metal Molding and Casting (Foundries) Effluent Guidelines Documents
Federal Register notices and documents for the Metal Molding and Casting (Foundries) Effluent Guidelines
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Nonferrous Metals Manufacturing Effluent Guidelines Documents for 1980-1988 Amendments
Federal Register notices for the 1980-88 amendments to the Nonferrous Metals Manufacturing Effluent Guidelines
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Pharmaceutical Manufacturing Effluent Guidelines
Overview and documents for Pharmaceutical Manufacturing Effluent Guidelines and Standards (40 CFR Part 439)
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Leather Tanning and Finishing Effluent Guidelines Documents
Support documents for Leather Tanning and Finishing Effluent Guidelines regulations, 40 CFR Part 425
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National Ambient Air Quality Standards (NAAQS) for Carbon Monoxide (CO)
learn about the NAAQS for CO by reading the rule history, the rule summary, the docket folder, and fact sheets
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Approved CWA Microbiological Methods for Ambient Water
Microbiological pollutant analytical methods approved at 40 CFR Part 136