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Displaying 1 - 13 of 13 results

• 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

• What sources make up the Tier 1 categories used in the emissions trends?

  Tier 1 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 assignments can be downloaded from the EPA SCC website in Comma Separate Values (CSV) format.

  • Last published: May 1, 2024

• What is the cause of the large decrease in electric utility emissions, particularly sulfur dioxide, starting in 1995?

  SO2 emissions reductions from utilities during this time are primarily attributed to the impacts of the acid rain program. As described on EPA’s Acid Rain Program web page, Phase 1 of this program began in 1995 and affected 263 units at 110 most coal-burning electric utility plants in 21 eastern…

  • Last published: May 1, 2024

• How Do I get Carbon Dioxide Equivalent (CO2e) Results for Nonroad Equipment?

  See More Frequent Questions about MOVES and Related Models . CO2e is simply the combination of the pollutants that contribute to climate change adjusted using their global warming potential. This can be done manually summing the mass of the pollutants multiplied by their global warming potential factors. These are the…

  • Last published: July 11, 2024

• How Do I Get Emission Factors or Inventory Totals for Nonroad Equipment Aggregated by the Various Categories used by MOVES?

  See More Frequent Questions about MOVES and Related Models . We have included a set of post-processing scripts that take the results of a Nonroad run and generate other output options. These scripts are all available in the MOVES graphical user interface in the Post Processing pull-down menu under “Run…

  • Last published: August 2, 2024

• Does an ethanol producer who sells undenatured ethanol to a U.S. importer who denatures it at the port need to register with EPA under RFS?

  See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . The RFS regulations specify that foreign producers of ethanol for use in transportation fuel, heating oil or jet fuel for import to the US who do not add denaturant to their product, must register under RFS. See 80.1450(b)…

  • Last published: August 2, 2024

• How Can I Incorporate Local Data Into My MOVES-Nonroad Run?

  See More Frequent Questions about MOVES and Related Models . We recommend not modifying the internal tables of the MOVES-Nonroad model to incorporate local data, as this can lead to unintended consequences. Instead, you can apply local activity and population data by: Executing a nonroad run in Inventory mode for…

  • Last published: July 11, 2024

• Can N2O (nitrous oxide) Emissions be Estimated in the MOVES Nonroad Model?

  See More Frequent Questions about MOVES and Related Models . Nitrous oxide (N2O) results is not an option you can select for nonroad equipment in MOVES.

  • Last published: July 10, 2024

• What are the requirements for a foreign producer who wishes to generate RINs for the renewable fuel they produce?

  See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . Foreign producers who plan to generate RINs must register and conduct a third-party engineering review pursuant to section 80.1450. Additionally, such foreign producers must meet the requirements in section 80.1466 prior to generating any RINs for their fuel…

  • Last published: August 2, 2024

• Why do mobile source NOx emissions jump higher between 2001 and 2002 on the emissions trends?

  The emissions model used for mobile sources changed from MOBILE6.2 to MOVES 2010 in December 2009. This change included a notable increase in NOx emissions. The EPA adjusted data back to 2002 to reflect the change in models. The higher emissions in 2002 are because of this method change and…

  • Last published: May 1, 2024

• Why in my Nonroad Results do I Have a fuelTypeID not Listed in the FuelType Table?

  See More Frequent Questions about MOVES and Related Models . The fuel types used by the nonroad part of MOVES is not located in the FuelType table. If you look in the NRFuelType table you will see that 23 is for nonroad diesel fuel and 24 is for marine diesel…

  • Last published: July 10, 2024

• How can I Install the NONROAD Model?

  See More Frequent Questions about MOVES and Related Models . EPA no longer supports the stand-alone FORTRAN version of the NONROAD model. It likely would need to be recompiled for use in current versions of the Windows operating system. Instead, EPA has included Nonroad equipment estimates in our current MOVES…

  • Last published: July 10, 2024

• Why do the PM2.5 emissions for the electric utilities source category jump up between 1998 and 1999?

  The estimation method for PM emissions from fuel combustion sources was enhanced beginning with the 1999 National Emissions Inventory. Prior to 1999, the emissions measurement data methodology only included the filterable portion (which means the solid particle matter at elevated stack temperatures). Beginning with the 1999 NEI, both the filterable…

  • Last published: August 15, 2024