Search Frequent Questions

Displaying 1 - 15 of 86 results

• 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: March 18, 2024

• How do the different parts of particulate matter (PM) fit together?

  The various parts of PM in the NEI are related as follows. PM10-FIL > PM25-FIL because PM10-FIL includes PM25-FIL PM25-PRI = PM25-FIL + PM-CON This equation only applies at the process level. Because some sources only can report PM2.5 (due to test method differences), this equation does not apply to…

  • Last published: April 17, 2024

• How does PM2.5 relate to PM species such as EC, OC, SO4, NO3, PMFINE, and DIESEL-PM25?

  Primary PM2.5 estimates are speciated into the five PM species in the NEI: elemental (black) carbon (EC), organic carbon (OC), nitrate (NO3), sulfate (SO4), and the remainder of PM25-PRI (PMFINE). Diesel engine PM25-PRI and PM10 emissions are also labeled as DIESEL-PM25 and DIESEL-PM10 for mobile source diesel engines. For all…

  • Last published: April 17, 2024

• Hot Work Definition and Requirements

  Facilities subject to the Program 3 Prevention Program requirements in 40 CFR Part 68 must include in their Risk Management Plan the date of the most recent review or revision of hot work permit procedures in Section 7.13. What is considered hot work and what are the requirements related to…

  • Last published: May 26, 2024

• Do I have to conduct incident investigations of releases resulting from theft?

  The incident investigation provisions of 40 CFR Part 68 (§§68.60 and 68.81) require facilities to investigate incidents that resulted in or could reasonably have resulted in a catastrophic release. Are covered facilities required to perform incident investigations of releases resulting from theft of covered substances, such as anhydrous ammonia? If…

  • Last published: May 26, 2024

• Do Program 1 processes have to complete a process hazard analysis?

  Do owners or operators of Program 1 processes have to complete a process hazard analysis? No. The Program 1 requirements do not include a process hazard analysis (40 CFR §68.12(b)). Program 3 processes require completion of a process hazard analysis (40 CFR §68.12(d)(3)) while Program 2 processes must complete a…

  • Last published: May 29, 2024

• Is a hazard review synonymous with a process hazard analysis (PHA)?

  The prevention program requirements under 40 CFR Part 68, Subparts C and D, include hazard reviews and process hazard analyses. Is a hazard review synonymous with a process hazard analysis (PHA)? No. A hazard review is different from a PHA. A hazard review is part of the Program 2 prevention…

  • Last published: May 29, 2024

• How often must compliance audits be performed?

  How often must owners or operators of stationary sources subject to the risk management program regulations perform compliance audits? The regulations at 40 CFR §§68.58(a) and 68.79(a) state that owners or operators must certify that they have evaluated compliance with the applicable prevention program provisions at least once every three…

  • Last published: May 28, 2024

• What will constitute a valid electronic signature for electronic submission of reports to EPA?

  See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . EPA will require that each party who wants to report electronically must sign an agreement that the use of electronic reporting methods will be considered equivalent to paper methods and that personal identification numbers assigned by EPA will…

  • Last published: July 23, 2024

• What is the definition of a responsible corporate officer (RCO) who is required to certify some of the submissions involved?

  See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . Under § 80.75(n), reports to EPA must be signed and certified as correct by the owner or a responsible corporate officer of the refiner, importer, or oxygenate blender. "Owner" means the person who is the principal owner of…

  • Last published: August 2, 2024

• Could we become the delegated authority for submission of reports on behalf of our members?

  See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . Individual blenders could rely on your association to submit reports to EPA on their behalf. . However you should understand that if any reports are not submitted or are submitted improperly then responsibility would fall upon the individual…

  • Last published: August 2, 2024

• By our reading of the regulations, the only reporting required of the oxygenate blender who elects to comply with the oxygen standard on a per gallon basis is a yearly report due the last day of February of each year (beginning in 1996) that states the to

  See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . Your interpretation is correct.(10/31/94) This question and answer was originally posted at Consolidated List of Reformulated Gasoline and Anti-Dumping Questions and Answers: July 1, 1994 through November 10, 1997 (PDF) (333 pp, 18.17 MB, EPA420-R-03-009, July 2003, About…

  • Last published: August 2, 2024

• Question 14, Section VI.C., of the July 1, 1994 Question and Answer Document provides an example of the creation and addition of two different batches to form a composite mixture. All or a portion of this composite is shipped as RFG. How will the refinery

  See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . Question 14 relates to in-line blending operations that have petitioned EPA for and received an exemption from the independent sampling and testing requirements of the RFG regulations. In such petitions, refiners often define a "batch" of in-line blended…

  • Last published: August 6, 2024

• The batch report requires reporting the volume percent for six oxygenates -methanol, MTBE, ethanol, ETBE, TAME and t-butanol. If a refiner or oxygenate blender uses MTBE or ethanol as an oxygenate, and does not include in its calculation of oxygen weight

  See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . Trace amounts of oxygenates that may be present in MTBE or ethanol do not have to be reported. However, where a refiner reports total oxygen weight percent that includes MTBE or ethanol plus other oxygenates in larger than…

  • Last published: August 6, 2024

• 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