Laws & Regulations
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Direct Final Rule Approving Relaxation of Summer Gasoline Volatility Standard for Grant Parish Area
EPA is taking direct final action to relax the federal volatility (RVP) standard applicable to summer gasoline supplied to the Grand Parish, Louisiana area from 7.8 pounds per square inch (psi) to 9.0 psi.
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Alternative Test Method for Olefins in Gasoline
This action proposes to allow for an additional alternative test method for olefins in gasoline, ASTM D6550-05. The allowance of this additional alternative test method will provide more flexibility to the regulated industry.
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Data
A landing page for EPA data resources. Discover data assets, understand data policy, and how EPA manages and governs data.
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Alternative Test Method for Olefins in Gasoline
This page summaries the final rule for Alternative Test Method for Olefins in Gasoline.
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Relaxation of Summer Gasoline Volatility Standard for Florida and the Raleigh-Durham-Chapel Hill Area (Triangle Area) and the Greensboro/Winston-Salem/High Point Area (Triad Area) in North Carolina
The EPA is taking final action to relax the federal volatility (RVP) standard applicable to summer gasoline supplied to three areas in Florida and the Triangle and Triad Areas in North Carolina from 7.8 pounds per square inch (psi) to 9.0 psi.
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District of Columbia SIP: Negative Declarations - VOC Source Categories
District of Columbia SIP - EPA Approved non -regulatory and quasi-regulatory material
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Relaxation of Summer Gasoline Volatility Standard for Jefferson and Shelby counties, Alabama (“the Birmingham area”) Final action
The EPA is taking final action to relax the federal volatility (RVP) standard applicable to gasoline supplied to the Birmingham area from 7.8 pounds per square inch (psi) to 9.0 psi during the summer ozone season.
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Removal of the RFG Program from the Northern Kentucky Area of the Cincinnati-Hamilton Ozone Maintenance Area
This page is final summary that Removal of the RFG Program from the Northern Kentucky Area of the Cincinnati-Hamilton Ozone Maintenance Area
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Current NPL Updates: New Proposed NPL Sites and New NPL Sites
View proposed and new NPL sites listed in the most recent EPA Federal Register rulemaking.
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Criteria Air Pollutants
This web area will provide access to information on setting and implementing the outdoor air quality standards for the six criteria air pollutants.
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Ozone Designations - 2015 Standards - Maryland State Recommendations and EPA Response
Maryland designation recommendation letter
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Criminal Press Releases - 2019
This is a list of press releases announcing results of EPA criminal cases adjudicated in U.S. courts for 2019.
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Current Implementation of Waters of the United States
Information about EPA and Army actions regarding the development of a rule to redefine waters of the United States
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Pre-2015 Regulatory Regime
Background on the pre-2015 regulatory regime for the definition of "waters of the United States"
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Other Datasets
This website provides access to several EPA databases to provide information about environmental activities that may affect air, water, and land anywhere in the United States.
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Agenda for the September 7, 2017 Webinar "Use Information for PBT Chemicals under TSCA Section 6(h)"
EPA's existing chemicals programs address pollution prevention, risk assessment, hazard and exposure assessment and/or characterization, and risk management for chemicals substances in commercial use.
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System Updates for Fuels Registration
This web page provides release notes for each version of OTAQREG and lists of future enhancements and known issues.
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Release Notes for OTAQReg v7.3.1
The release is a minor patch that includes performance improvements to existing EPA Admin user functionality, a text change to a column label and security fixes.
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Regulation of Biotechnology under TSCA and FIFRA
This site explains how EPA regulates biotechnology under the Toxic Substances Control act and the Federal Insecticide, Fungicide, and Rodenticide Act and how biotechnology can be used.
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Status of Active Sanctions Clocks under the Clean Air Act
Memorandum clarifying language in the preamble of EPA's particulate matter implementation rule as it relates to EPA's Clean Data Policy