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• 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 I Create Scripts to run MOVES3 from the Command Line?

  See More Frequent Questions about MOVES and Related Models . While the easiest way to interact with MOVES3 is via its graphical user interface (GUI), it is sometimes useful to process MOVES RunSpecs in batches via the Windows command line. To this end, MOVES3 has a set of commands that…

  • Last published: April 10, 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

• If RFG is shipped from a refinery to a terminal through a proprietary pipeline system, may the pipeline rely on the refinery and terminal test results to satisfy the quality assurance defense element?

  See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . In a case where EPA documents a downstream standard violation at a proprietary terminal that is served only by a proprietary pipeline that receives gasoline only from a proprietary refinery, the company that owns the refinery, pipeline and…

  • Last published: July 10, 2024

• If, due to piping constraints, a refiner must put a purchased or inter-refinery transferred batch of finished gasoline through the refinery blendstock system, but does so without the batch losing integrity, must the refiner include the batch in his compli

  See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . No. As per § 80.65(i) of the regulations, any refiner, importer, or oxygenate blender shall exclude from all compliance calculations, the volume and properties of any RFG that is produced at another refinery or oxygenate blending facility, or…

  • Last published: July 10, 2024

• In areas where an oxy fuels program is in effect, how do these requirements coincide with RFG requirements? In areas where there is an overlap, are any regulatory changes necessary by the state?

  See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . In areas that are covered by both a state's winter oxy fuels and the federal RFG programs, the fuel must comply with both program requirements. Therefore, the more stringent 2.7 wt% minimum requirement of the winter oxy fuels…

  • Last published: July 10, 2024

• If foreign product is acquired by an importer through an exchange agreement instead of a sale, does it change identification of the importer for RFG reporting purposes?

  See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . No. The person who is the importer of record for Customs purposes should be the importer for RFG purposes, and this is usually the gasoline owner, regardless of how that ownership was acquired.(7/1/94) This question and answer was…

  • Last published: July 10, 2024

• If terminals utilize the services of outside laboratories for periodic sampling and testing, how can the terminal limit exposure to liability in the event non-complying product from the tested tank(s) leaves the terminal during the three or four days befo

  See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . A terminal-distributor's release of RFG that does not meet applicable standards would constitute a violation of § 80.78(a)(1) for which the distributor would be liable, and it would not be a defense if the violation was caused by…

  • Last published: July 10, 2024

• How Can I Reduce the Time Needed to Run the Nonroad Emission Factor Post-Processing Scripts?

  See More Frequent Questions about MOVES and Related Models . Very long run times are not unusual for Nonroad emission factor post-processing scripts, particularly with a large output database. To reduce script run time, we recommend doing the following: Reduce the size of your output database by choosing just the…

  • Last published: July 10, 2024

• How do I Obtain the Populations for Each of the MOVES Source Types?

  See More Frequent Questions about MOVES and Related Models . To output vehicle populations, when setting up your RunSpec select the "Inventory" calculation type from the Scale panel and the "Population" activity option from the General Output panel of the MOVES GUI. The movesactivityoutput table in your MOVES output database…

  • Last published: July 11, 2024

• How are Counties Mapped to Fuel Regions in MOVES? How Can I Substitute Alternate Fuel Formulations?

  See More Frequent Questions about MOVES and Related Models . The RegionCounty table in the MOVES default database maps each county to a MOVES fuel region (defined by regionCodeID). If you are conducting a County or Project Scale Run, you do not need to modify this table to use alternate…

  • Last published: July 11, 2024

• Can MOVES Report Output in Terms of Fuel Consumption?

  See More Frequent Questions about MOVES and Related Models . Although gallons of fuel consumed are not reported by MOVES, the factors used to convert total energy consumption (a MOVES reporting option) to gallons of fuel are contained in the FuelSubtype table (energy content, reported in kilojoules per gram of…

  • Last published: July 10, 2024

• Why Doesn't my Output Vehicle Miles Traveled (VMT) Match my Input VMT?

  See More Frequent Questions about MOVES and Related Models . This problem usually occurs when the run specification does not include all possible vehicle and fuel types. MOVES internally allocates the input VMT to each of the source types and fuel types and only reports the VMT for the fuel…

  • Last published: July 10, 2024

• If a pipeline must be classified as a refiner, how would that be handled administratively by EPA? Since pipelines don't own the product, would pipeline have to become buyers and sellers for regulatory purposes?

  See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . Refiners must be registered with EPA. The pipeline need not be an owner of the gasoline to be a refiner.(7/1/94) This question and answer was posted at Consolidated List of Reformulated Gasoline and Anti-Dumping Questions and Answers: July…

  • Last published: July 11, 2024