Laws & Regulations
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Steam Electric Power Generating Effluent Guidelines - 2015 Final Rule Documents
Fact sheet and support documents for the 2015 Final Steam Electric Effluent Guidelines rule
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Steam Electric Power Generating Effluent Guidelines - Consultation Documents
Summaries of EPA consultations on the Steam Electric Effluent Guidelines proposed rule (2013) with Indian Tribes and consultations pursuant to the Unfunded Mandates Reform Act and Executive Order 13132 on federalism
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Documents Associated With the PFAS Advance Notice of Proposed Rulemaking
This page contains documents related to the PFAS rulemaking for the OCPSF category.
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Steam Electric Power Generating Effluent Guidelines Background Documents
Background documents related to Steam Electric Power Generating Effluent Guidelines (40 CFR Part 423)
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Steam Electric Power Generating Effluent Guidelines Documents Related to 1978 and 1980 Amendments
Documents for the 1978 & 1980 amendments to the Steam Electric Power Generating Effluent Guidelines (40 CFR Part 423)
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Steam Electric Power Generating Effluent Guidelines Documents Related to 1982 Amendment
Documents for the 1982 amendments to the Steam Electric Power Generating Effluent Guidelines and Standards (40 CFR Part 423)
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Steam Electric Power Generating Effluent Guidelines Documents Related to 1977 Amendment
Documents related to the 1977 amendment to the Steam Electric Power Generating Effluent Guidelines (40 CFR Part 423)
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Steam Electric Power Generating Effluent Guidelines Documents Related to 1974 Initial Rulemaking
Documents supporting the 1974 initial rulemaking for Steam Electric Power Generating Effluent Guidelines (40 CFR Part 423)
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Airport Deicing Effluent Guidelines Documents
Documents related to Airport Deicing Effluent Guidelines
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Construction and Development Effluent Guidelines Documents
Support documents for C&D Effluent Guidelines rules.
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Paving and Roofing Materials Effluent Guidelines
Overview and documents for the Paving and Roofing Materials (Tars & Asphalt) Effluent Guidelines regulation (40 CFR Part 443).
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HFC-23 Emission Standards for Production of Class II ODS
HFC-23 transformation and emission web page. Also information on new standards and new HFC-23 rule.
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VW DERA Option for Tribes Supporting Documents
VW Settlement DERA options fact sheets for tribes
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April 2022 Alternative RFS Compliance Demonstration Approach for Certain Small Refineries
EPA denies petitions from small refinery exemptions and provides an alternative approach to demonstrate compliance.
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April 2022 Denial of Petitions for RFS Small Refinery Exemptions
EPA denies all pending small refinery exemptions (SRE) petitions under the Renewable Fuel Standard (RFS) program.
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Final Rulemaking for Modifications to Fuel Regulations to Provide Flexibility for E15 and to Elements of the Renewable Identification Number Compliance System
Learn more about final rulemaking for Modifications to Fuel Regulations to Provide Flexibility for E15 and to Elements of the Renewable Identification Number Compliance System
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Renewable Fuel Standard (RFS2): Program Amendments
The final rule amends the RFS2 regulations of 40 CFR Part 80 Subpart M to correct regulatory language that was inconsistent or that inadvertently misrepresented EPA’s intent as reflected in the preamble to the final RFS2 regulations.
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Final Renewable Fuel Standards for 2020, and the Biomass-Based Diesel Volume for 2021
Final Renewable Fuel Standards for 2020, and the Biomass-Based Diesel Volume for 2021
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Description and History of the MOBILE Highway Vehicle Emission Factor Model
MOBILE is an EPA model for estimating pollution from highway vehicles. It has been superseded by the Motor Vehicle Emission Simulator (MOVES). MOBILE calculates emissions of hydrocarbons (HC), oxides of nitrogen (NOx) and carbon monoxide (CO).
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Certification Materials for Marine SI Engines/Equipment
Use these tutorials as part of certification for nonroad spark-ignition engines.