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Displaying 1 - 13 of 13 results

• 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

• What does MOVES Assume for Future Year Fleet Fuel Efficiency and Emissions?

  See More Frequent Questions about MOVES and Related Models . MOVES reflects all fuel economy and emissions standards that were final as of the model release date. For a list of recent regulations accounted for in the most recent MOVES version, see the see the Overview of EPA’s Motor Vehicle…

  • Last published: October 23, 2024

• Is my EPA renovator certification accepted in all states and tribal areas?

  Answer: Not necessarily. Whether to accept certification from another jurisdiction is up to the individual state or tribal area. EPA cannot compel states or tribes to adopt programs identical to the Federal program or to establish reciprocity provisions. However, EPA continues to encourage states and tribes that may be considering…

  • Last published: November 19, 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

• My firm is certified by an authorized state. Does this certification allow my firm to work in EPA-administered jurisdictions?

  No. You must apply for and receive EPA certification before offering, performing, or claiming to perform renovations covered by the RRP Rule in EPA-administered jurisdictions. Question Number: 23002-19752 Find a printable PDF copy of all frequent questions pertaining to lead .

  • Last published: November 19, 2024

• How does MOVES Calculate CO2 and CO2 Equivalent Emissions?

  See More Frequent Questions about MOVES and Related Models . MOVES calculates the energy it takes to operate an onroad vehicle based on energy consumption rates as explained in the technical reports Greenhouse Gas and Energy Consumption Rates for Onroad Vehicles MOVES3 (pdf) (November 2020, EPA-420-R-20-015) and Exhaust Emission Rates…

  • Last published: March 20, 2024

• Why Are There No Emissions for the Early and Late Hours of the Day for Certain Source Types?

  See More Frequent Questions about MOVES and Related Models . MOVES has no start emissions for the certain source types in certain hours of the day. While we know that a non-zero number of these source types do start late at night, our activity data on these trucks and buses…

  • Last published: July 10, 2024

• If I completed renovator training in an authorized state, what do I need to do to work for an EPA certified firm in EPA-administered jurisdictions?

  Answer: There are no additional requirements. To become a certified renovator or certified dust sampling technician, an individual must successfully complete the appropriate course accredited by EPA or by an EPA-authorized state or tribal program. The course completion certificate serves as proof of certification. For a list of states, tribes…

  • Last published: November 19, 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

• What Pollutants are Included in “oxides of nitrogen” in MOVES?

  See More Frequent Questions about MOVES and Related Models . The definition of NOx in MOVES (NO + NO2 + HONO) is different than the standard NOx definition of NOx (NO + NO2). This change has been made to correct the exhaust NOx emission in MOVES for potential interference with…

  • Last published: July 10, 2024

• What Drives Seasonal CO Emission Trends?

  See More Frequent Questions about MOVES and Related Models . Once a vehicle’s engine/catalyst reaches operating temperature, the ambient temperature has little effect on the emissions performance of the vehicle. These “running” emission rates in MOVES have no temperature adjustment. However, during summer months at warm temperatures, MOVES assumes extensive…

  • 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