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  • 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…

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  • 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…

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  • To whom do I report an oil discharge?

    A facility should report discharges to the National Response Center (NRC) at 1-800-424-8802 or 1-202-267-2675 . The NRC is the federal government's centralized reporting center, which is staffed 24 hours per day by U.S. Coast Guard personnel. If reporting directly to NRC is not practicable, reports also can be made…

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  • When must I report an oil discharge to NRC?

    Any person in charge of a vessel or an onshore or offshore facility must notify the National Response Center (NRC) immediately after he or she has knowledge of the discharge.

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  • 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…

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  • What happens after a facility submits the information about an oil discharge to EPA?

    The EPA Regional Administrator will review the information submitted by the facility and may require a facility to submit and amend its SPCC Plan. Facilities and equipment that qualified for the new streamlined requirements may lose eligibility for those options as determined by the Regional Administrator. A state agency may…

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  • Who is subject to the Discharge of Oil regulation?

    Any person in charge of a vessel or of an onshore or offshore facility is subject to the reporting requirements of the Discharge of Oil regulation if it discharges a harmful quantity of oil to U.S. navigable waters, adjoining shorelines, or the contiguous zone, or in connection with activities under…

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  • 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…

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  • 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…

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  • Reporting requirements for oil discharges

    What are the reporting requirements for discharges of oil? If a discharge of oil reaches waters of the United States, it is reportable to the National Response Center under 40 CFR Part 110 , which was established under the authority of the Clean Water Act. Discharges of oil must be…

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  • 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…

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  • What does an annual emissions value in the NEI represent (one year or multiple years)?

    The NEI provides total annual emissions for a single year.

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  • What is included in the emissions “Tiers”?

    The Tiers are assigned by a Source Classification Code (SCC), which has the most detail about the emissions processes that generate the emissions. The full list of SCCs, their associated Tiers, and the SCC descriptions is available online at https://sor-scc-api.epa.gov/sccwebservices/sccsearch/ .

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  • What do I need to submit to EPA if I have an oil discharge?

    The owner/operator must provide the following: Name and location of the facility Owner/operator name Maximum storage/handling capacity of the facility and normal daily throughput Corrective actions and countermeasures taken, including descriptions of equipment repairs and replacements Adequate description of the facility, including maps, flow diagrams, and topographical maps, as necessary…

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  • What information do I need to report for an oil discharge?

    The National Response Center (NRC) will ask a caller to provide as much information about the incident as possible including: • Name, organization, and telephone number • Name and address of the party responsible for the incident • Date and time of the incident • Location of the incident •…

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