Search Frequent Questions

Displaying 1 - 15 of 20 results

• Where can I download hourly emissions data from continuous monitoring?

  Hourly emissions data files are available from the Clean Air Markets Division of EPA, collected as part of 40 CFR Part 75. The download location has changed in February, 2023. The new location is https://campd.epa.gov/data/bulk-data-files . Once on this new site, use the menu (at the left) and the Keyword…

  • Last published: January 7, 2025

• In a situation where an importer leases tankage from another company, e.g., from a for-hire terminal, who must register such import facility, the company that owns the terminal, the importer that leases the tankage, or both?

  See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . Under § 80.2(r), an importer is defined as "a person who imports gasoline or gasoline blending stocks or components from a foreign country into the United States...." Accordingly, it is the importer of the gasoline, and not the…

  • Last published: August 2, 2024

• If my fuel is already registered with the Fuels and Fuel Additives program under 40 CFR Part 79, do I still need to register with the RFS2 program under 40 CFR Part 80?

  See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . Yes. Even if your fuel or fuel additive is already registered under 40 CFR Part 79, there are additional registration requirements for parties regulated under the RFS2 program, as specified in 40 CFR 80.1450.

  • Last published: August 2, 2024

• Once I register my fuel for the RFS2 program under §80.1450, do I still need to register my fuel under 40 CFR Part 79?

  See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . Yes. Renewable fuels intended for use or used in motor vehicles are required to be registered under 40 CFR part 79 prior to any introduction into commerce. Manufacturers of renewable fuels and fuel additives not registered under part…

  • Last published: August 2, 2024

• How complete are the data in the National Emissions Inventory?

  While the goal of the National Emissions Inventory (NEI) program is to include all emissions data, there are always challenges meeting this goal. The answer about completeness of coverage of sources depends on the emissions sector and pollutant. In general, the criteria air pollutants and precursors (CAPs) are expected to…

  • Last published: January 7, 2025

• Where is more information available about emissions estimation methods used by the EPA?

  For criteria air pollutants and precursors as well as for hazardous air pollutants, the methods are described in the technical support document (TSD) for the latest National Emissions Inventory (NEI) available from the main NEI page . For greenhouse gas emissions, you can find greenhouse gas inventory methods from the…

  • Last published: January 7, 2025

• Where are the NAICS/ SIC and SCC codes changes that have been implemented for the 2017NEI?

  Please refer to the NEI webpage for 2017 documentation , and follow the link for Appendix 2 - 2017 NEI Plan Code Changes. That Excel file describes anticipated changes for the SCCs and NAICS and includes a helpful read me. I'll just note in the next NEI/EIS email that SCC…

  • Last published: March 18, 2024

• Does EPA consider it a conflict of interest for a third-party company to assist a group of renewable fuel producers and importers of renewable fuel to help meet the requirements of the re-registration and engineering review pursuant to section 80.1450?

  See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . EPA does not restrict a renewable fuel producer or an importer of renewable fuel from seeking a third-party company to assist them in meeting the re-registration and engineering review requirements pursuant to section 80.1450. The renewable fuel producer…

  • Last published: August 2, 2024

• Will common carriers be required to register their transport trucks as oxygenate blending facilities?

  See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . Normally, only the owner of the gasoline produced at an oxygenate blending operation must register as an oxygenate blender. If a common carrier blends gas in trucks that it owns it must meet all of the requirements for…

  • Last published: August 2, 2024

• Is the licensed professional engineer conducting the engineering review required to perform the site visit in person, or can they delegate the site visit to another person who maybe assisting them in the engineering review?

  See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . Pursuant to §80.1450(b)(2), all verifications must be performed by the licensed professional engineer conducting the engineering review. This requirement includes conducting the site visits. The licensed professional engineer conducting the engineering review must perform the site visits to…

  • Last published: August 2, 2024

• How are emissions trends compiled?

  For criteria air pollutants and precursors, the emissions trends are based on the triennial National Emissions Inventory data, with some interim year data included for non-triennial years. The methods and interim-year approaches are described on the “Development of Data” tab included with the data provided on the Air Pollutant Emissions…

  • Last published: January 7, 2025

• How do I determine what SCCs have changed between inventory years?

  These are available in the EIS (Reporting Code table) or public website: https://sor-scc-api.epa.gov/sccwebservices/sccsearch/ Filter on “last inventory year” to remove SCCs no longer active. If this column has a date in it, then the SCC has been retired as of that date. The “last updated date” (column J) indicates when…

  • Last published: January 23, 2025

• Are the GHGs in the National Emissions Inventory Complete?

  No, the 2020 National Emissions Inventory (NEI) does not comprehensively capture all sources and sinks of greenhouse gases (GHGs) in the United States. For this information, users should review the EPA’s annual Inventory of U.S. Greenhouse Gas Emissions and Sinks . However, the NEI does report GHG emissions for select…

  • Last published: May 31, 2024

• Products authorized for use on oil discharges

  Does EPA maintain a list of products that are authorized for use on oil discharges? If so, how can a manufacturer have their product included on the list? Section 311(d)(2)(G) of the Clean Water Act (CWA) directs EPA to prepare a schedule of dispersants, other chemicals, and oil spill mitigating…

  • Last published: June 5, 2024

• 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 Consolidated List of Reformulated Gasoline and Anti-Dumping Questions and Answers: July 1, 1994 through November 10, 1997…

  • Last published: August 2, 2024