Search Frequent Questions

Displaying 1 - 14 of 14 results

• What is Vermiculite?

  Vermiculite is the mineralogical name given to hydrated laminar magnesium-aluminum-iron silicate that resembles mica in appearance. All vermiculite ores contain a range of other minerals that were formed along with the vermiculite in the rock. Vermiculite ores from some sources have been found to contain asbestos minerals but asbestos is…

  • Last published: April 23, 2024

• Where can I find older NEI data (prior to 2008)?

  The raw data and summaries that are still available (dating back to 1990) can be obtained from the web page https://www.epa.gov/air-emissions-inventories/pollutant-emissions-summary-files-earlier-neis . Starting with 2001 data, a more limited selection of summary files are available.

  • Last published: February 26, 2025

• Are biogenic emissions included in the emissions trends Tier 1 data?

  No, the biogenic emissions are not included in the emissions trends Tier 1 data. If needed, users can add the biogenic data either as a separate Tier, or specify its inclusion in the “Miscellaneous” Tier 1 group.

  • Last published: August 15, 2024

• What is the purpose of a cellulosic biofuel waiver credit?

  See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . Under EISA, EPA is required to make cellulosic biofuel waiver credits available for years where we waive some portion of the statutory volume for cellulosic biofuel. These credits can then be used by obligated parties to comply with…

  • Last published: January 17, 2025

• What are some uses of Vermiculite?

  Vermiculite has been used in various industries for over 80 years. It is used in the construction, agricultural, horticultural and industrial markets. Examples of products that contain vermiculite include potting soil mixes, loose fill insulation, and packing material. For more information, visit the EPA webpage: Protect Your Family from Asbestos-Contaminated…

  • Last published: April 23, 2024

• Is fuel sold in U.S. territories, such as Puerto Rico, required to comply with RFS2?

  See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . United States territories, such as Puerto Rico, are not included in the RFS2 program unless they opt-in according to §80.1443. See also §§80.1407(f) and 80.1426(b).

  • Last published: July 23, 2024

• Could you please expand upon the definition of the cellulosic biofuel waiver credit that may be for sale? I am not certain when, or if, a paper or pulp company could obtain a waiver credit or benefit from selling a waiver credit?

  See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . Cellulosic biofuel waiver credits may only be purchased by obligated parties (e.g., gasoline and diesel fuel refiners and importers) from EPA. See section 80.1456(c).

  • Last published: August 2, 2024

• What sources make up the Sectors or Tiers used in the emissions data summaries?

  Tier 1 and Sector categories are assigned by source classification codes (SCCs) that are the most specific processes available in the NEI. The latest SCC list with the Tier 1 and Sector assignments can be downloaded from the EPA SCC website in Comma Separate Values (CSV) format.

  • Last published: May 1, 2024

• Is the Renewable Fuels Mandate in ethanol equivalent gallons?

  See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . The percentage standards applicable under RFS are intended to be met with ethanol-equivalent volumes of renewable fuel. As a result, a gallon of ethanol counts as one gallon of renewable fuel for purposes of compliance with the four…

  • Last published: August 2, 2024

• Where can I obtain the hourly data from Continuous Emissions Monitors (CEMs)?

  The CEM emissions data are available from the EPA Clean Air Markets Program Data website.

  • Last published: August 15, 2024

• Does a home seller have to disclose to a potential buyer that a home contains asbestos? What about vermiculite?

  Federal law does not require the seller to disclose to a buyer that their home contains asbestos or vermiculite. State or local requirements may require disclosure. Contact your state about such requirements. Other Frequent Questions about Asbestos Learn About Asbestos Asbestos and School Buildings Information for Owners and Managers of…

  • Last published: March 21, 2024

• My attic has vermiculite insulation in it. Am I at risk? Should I take it out?

  If you have vermiculite insulation in your home, you should assume this material may be contaminated with asbestos and be aware of steps you can take to protect yourself and your family from exposure to asbestos. The EPA recommends that vermiculite insulation be left undisturbed. Airborne asbestos fibers present a…

  • Last published: August 15, 2024

• Where can I get maps and/or emissions of facility emissions data?

  The EPA provides emissions maps in two ways. First, each of the last three NEI years have a “Facility Mapping” tab available on the main NEI page for that inventory year (for example, see the 2020 NEI page). With this tool, maps can be created for one state at a…

  • Last published: January 7, 2025

• How can I get more detailed information? What measurements/sensors are used to measure emissions?

  Access the latest NEI data set . Under 'Sector Summaries - Criteria and Hazardous Air Pollutants by 60 EIS emission sectors', > choose National > for Pollutant, choose PM10 Primary and/ or PM2.5-PRI > Sector, choose all sectors >Submit Query to see results at bottom of page. Open the results…

  • Last published: March 18, 2024