Laws & Regulations
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TSCA Section 5(a)(3)(C) Determination for Premanufacture Number (PMN) P-18-0230
This document describes EPA's pre-manufacture notice review determination under amended TSCA for P-18-0230.
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TSCA Section 5(a)(3)(C) Determination for Premanufacture Number (PMN) P-18-0035
This document describes EPA's pre-manufacture notice review determination under amended TSCA for P-18-0035.
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TSCA Section 5(a)(3)(C) Determination for Premanufacture Number (PMN) P-19-0062
This document describes EPA's pre-manufacture notice review determination under amended TSCA for P-19-0062.
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TSCA Section 5(a)(3)(C) Determination for Premanufacture Number (PMN) P-18-0286
This document describes EPA's pre-manufacture notice review determination under amended TSCA for P-18-0286.
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Carbon Monoxide (CO) Air Quality Standards - Documents Prior to Review Completed in 2011
Documents Prior to Review Completed in 2011
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6 Source Categories - Boilers and Emergency Engines (Final Action)
EPA finalized options to simplify the Clean Air Act permitting process for certain smaller sources of air pollution commonly found in Indian country.
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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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Diving Into Regulations
deep dive page
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Texas SIP: 30 TAC 114.50, Vehicle Emissions Inspection Requirements, SIP effective December 6, 2016 (TXd187), July 14, 2017 (TXd196), and May 8, 2025 (TXd248)
Texas SIP: 30 TAC 114.50-114.53. Vehicle Inspection and Maintenance; SIP effective 2016-12-06 (TXd187) and 2017-07-14 (TXd196)
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Regulatory Determination 2 Support Documents for Dacthal Mono-Acid (MTP) and Di-Acid (TPA) Degradates
Learn about the support documents for Dacthal mono- and di-acid degradates
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Regulatory Determination 2 Support Document for Microorganisms on the CCL 2
Learn about the support document for microorganisms on the CCL 2
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Regulatory Determination 2 Support Documents for Fonofos
Learn about the support documents for Fonofos.
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Regulatory Determination 1 Support Documents for Naphthalene
Naphthalene Support Documents
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Fact Sheet: Preliminary Regulatory Determination 3
Fact sheet for Regulatory Determination 3
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Manufacturer-Run In-Use Testing Program Data for Heavy-Duty Diesel Engines – Test Order Year 2019
This page provides manufacturer-run in-use testing program data from heavy-duty diesel engine manufacturers in compliance with 40 CFR 86 Subpart T for Test Year 2019.
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Manufacturer-Run In-Use Testing Program Data for Heavy-Duty Diesel Engines – Test Order Year 2018
This page provides manufacturer-run in-use testing program data from heavy-duty diesel engine manufacturers in compliance with 40 CFR 86 Subpart T for Test Year 2018.
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1988 Underground Storage Tanks; Technical Requirements; Final Rule and Underground Storage Tanks Containing Petroleum-Financial Responsibility Requirements and State Program Approval Objective; Final Rule.
EPA's 1988 regulations concerning USTs are contained in 40 CFR Part 280, 40 CFR Part 281 and 40 CFR Parts 282.50-282.105 and divided into three sections: technical requirements, financial responsibility requirements, and state program approval objectives.
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Revising Underground Storage Tank Regulation – Revisions to Existing Requirements and New Requirements for Secondary Containment and Operator Training; Final Rule
EPA published the 2015 underground storage tank regulation and the 2015 state program approval regulation in July 2015.
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Release Detection for Underground Storage Tanks and Piping: Straight Talk on Tanks
Review easy-to-understand descriptions of several leak detection methods for tanks and piping, as well as explanations of the regulatory requirements for leak detection.