Laws & Regulations
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Pulp, Paper and Paperboard Effluent Guidelines - Documents Related to 1974 through 1986 Rules
Support documents for Pulp, Paper and Paperboard Effluent Guidelines: 1974, 1977, 1982 and 1986 rules.
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Metal Products and Machinery Effluent Guidelines Documents
Support documents for Metal Products and Machinery Effluent Guidelines (40 CFR Part 438)
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Organic Chemicals Effluent Guidelines Documents
Federal Register notices and documents supporting the OCPSF rules
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Approved CWA Test Methods: Inorganic Non‑Metals
Analytical methods promulgated under Clean Water Act Section 304(h), published at 40 CFR Part 136
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Support Documents for the Phase I Cooling Water Intake Rules (2001-2003)
Documents supporting the final Phase I rule for cooling water intakes.
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Learn about Effluent Guidelines
Key terms and concepts in the national Effluent Guidelines program
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Ore Mining and Dressing Effluent Guidelines
Overview and documents for Ore Mining and Dressing Effluent Guidelines and Standards (40 CFR Part 440)
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Approved CWA Test Methods: Metals
Analytical methods for metal pollutants in water; promulgated under Clean Water Act Section 304(h), published at 40 CFR Part 136
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Final Volume Standards for 2020, 2021, and 2022
EPA finalizes 2020, 2021, and 2022 volume standards under the Renewable Fuel Standard (RFS) program, along with regulatory changes intended to strengthen the program.
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June 2022 Alternative RFS Compliance Demonstration Approach for Certain Small Refineries
EPA provides certain small refineries with an alternative approach to demonstrate compliance with their 2016-2018 RFS obligations.
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Interim Joint Technical Assessment Report: Light-Duty Vehicle Greenhouse Gas Emission Standards and Corporate Average Fuel Economy Standards for Model Years 2017-2025
EPA and the NHTSA collaborated with CARB on this joint Technical Assessment Report to build on the success of the first phase of the National Program to regulate fuel economy and greenhouse gas (GHG) emissions from U.S. light-duty vehicles.
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EPA’s Data and Analysis of Piston-engine Aircraft Emissions of Lead at U.S. Airports
Materials related to programs to reduce lead emissions from aircraft through monitoring lead levels at airports.
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Regulations for Emissions from Vehicles and Engines
Regulations for smog, soot and toxic pollution from vehicles and engines.
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Certification and Compliance for Nonroad Vehicles and Engines
Certification and compliance information for aircraft, all-terrain vehicles (ATVs) and dirt bikes, locomotives, marine compression-ignition (CI) engines, nonroad CI engines, nonroad spark (SI) engines, portable fuel containers, snowmobiles.
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Renewable Fuel Standard Program: Affidavit for Professional Engineer Submitting an Updated Engineering Review Report
This document is an affidavit for a professional engineer submitting an updated Engineering Review Report. (November 2017)
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Release Notes for OTAQReg v6.4.0
The release is a minor patch that addresses bug fixes and improvements to Accessibility.
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Final NPDES Permit for Aibonito Wastewater Treatment Plant in Aibonito, Puerto Rico
EPA's NPDES wastewater permit for the Aibonito Wastewater Treatment Plant in Aibonito, Puerto Rico.
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Final NPDES Permit for Arecibo Water Treatment Plant in Arecibo, Puerto Rico
EPA's NPDES water permit for the Arecibo Water Treatment Plant in Arecibo, Puerto Rico.
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Final NPDES Permit for Canalizo Water Treatment Plant in Jayuya, Puerto Rico
EPA's NPDES water permit for the Canalizo Water Treatment Plant in Jayuya, Puerto Rico.
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Final NPDES Permit for Lajas Wastewater Treatment Plant in Lajas, Puerto Rico
EPA's NPDES wastewater permit for the Lajas Wastewater Treatment Plant in Lajas, Puerto Rico.