Learn the Issues
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Children's Health Outreach Toolkit
Find outreach tools including publications, graphics, and social media messaging about children's environmental health.
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Green Infrastructure Soak Up the Rain Webinars
EPA's Green Infrastructure Soak Up the Rain webinars feature leading academics and professionals from around the country sharing expertise on a range of topics related to green infrastructure.
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CSAPR Compliance Year 2025 NUSA NODAs
This page contains links to NUSA Notices of Data Availability for the CSAPR 2023 compliance year.
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State Authorization Rule Checklists 169 through 180 for Hazardous Waste Rulemakings Published Between July 1998 and June 1999
Rules, checklists, summaries and Federal Register Notice links related to State Program Advisory 35 between July 1998 and June 1999.
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About EPA's 2018 decision not to withdraw proposed Clean Water Act restrictions on mining Pebble Deposit
EPA's proposal to withdraw its proposed Clean Water Act restrictions on mining the Pebble deposit in the Bristol Bay watershed in Alaska.
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2017 Settlement Agreement between EPA and Pebble Limited Partnership
EPA's May 11, 2017 Settlement Agreement with Pebble Limited Partnership to resolve litigation from 2014 relating to EPA's prior work in the Bristol Bay watershed in Alaska.
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Bristol Bay 404(c) Timeline
Timeline of EPA actions with regard to potential mining activities within the Bristol Bay watershed.
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Apply Biofilters or Biocovers
Option for landfill gas electricity project owners with expiring power purchase agreements that are interested biofilters or biocovers after the project ends.
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Regulatory Oversight of the Havasu Water Company Public Water System, Needles, CA
The Havasu Water Company (HWC) operates a public water system on the Chemehuevi Indian Reservation in Needles, California. The system relies on surface water filtration to serve approximately 360 people. EPA oversees HWC under the Safe Drinking Water Act.
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Reducing Diesel Emissions from School Buses
Information and materials that support the Clean School Bus Program, including idle reduction strategies, replacement of older buses, links to related websites and publications
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History of Fuel Economy Labeling
Fuel economy labeling, history and trends of fuel economy, testing and data, and information on how federal agencies work together on the issue of fuel economy.
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Miles Per Gallon (MPG) Math
This page contains an infographic that explains how consumers can save money on fuel by purchasing a vehicle with a higher fuel economy.
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Greenhouse Gas Rating
Description of greenhouse gas vehicle ratings.
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Compliance Workshop
This page contains materials related an EPA/Industry workshop such as agendas, presentations and other information relevant to the workshop.
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If I have a renewable fuel that was assigned a specific Equivalence Value in regulation Section 80.1115, but I don't think that Equivalence Value is right for my product, what options do I have?
See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help. Producers or importers of renewable fuel may submit a petition to the EPA requesting a different Equivalence Value from that assigned in the regulations. However, the petition must use the calculation methodology described in regulation Section 80.1115(d). In short…
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If a new area decides to opt-in to the reformulated gasoline program, what determines the effective date that reformulated gasoline must be supplied to that area?
See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help. The effective date of the program in any area which opts into the program is January 1, 1995, or one year after EPA receives the request to include the area in the program, whichever is later. EPA will announce…
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If an independent lab temporarily cannot run a required test, may the independent lab use a substitute lab for the test until the independent lab regains its testing capacity? May a refiner use one independent lab to collect samples at a refinery, and another independent lab to analyze those samples? If a second lab is used, must the primary independent lab notify EPA of the role of the second lab?
See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help. An independent lab may use a second lab to collect samples or perform required tests, provided that: (1) the second lab is independent as defined in § 80.65(f)(2)(iii); (2) the primary independent lab is responsible for the quality of…
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If an obligated party (a refiner) imports non-denatured ethanol and denatures it, is the refiner considered a renewable fuel producer and is the refiner obligated to establish RIN numbers and file quarterly reports for the ethanol it denatures?
See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help. The party would be identified as a renewable fuel importer rather than a renewable fuel producer, and would need to establish RIN numbers and file reports required of an importer. The party in this example would also be required…
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If an importer registers in a PADD, may the importer use a starting point other than zero, within the range of valid batch numbers, for generating the sequential batch numbers at each of its import facilities?
See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help. Yes. As long as no batches are assigned duplicate numbers this would be acceptable. (7/1/94) This question and answer was posted at
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If a party buys a batch of ethanol, and through testing determines that the ethanol is synthetic (non-renewable), what happens to the RINs?
See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help. If a volume of renewable fuel for which RINs have been generated is found to not be a valid renewable fuel under the RFS program, then the associated RINs are likewise deemed invalid. See regulation Section 80.1131. If a…