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  • Accidental releases from non-covered processes

    Should the owner or operator include accidental releases from processes containing listed substances below the threshold quantity in the five-year accident history required under the hazard assessment provisions of 40 CFR Part 68, Subpart B, and in the incident investigation requirements under 40 CFR Part 68, Subparts C and D…

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  • Do I have to report accidents that resulted in medical treatment?

    I had a release where several people were treated at the hospital and released; they attributed their symptoms to exposure. We do not believe that their symptoms were in fact the result of exposure to the released substance. Do we have to report these as offsite impacts? Yes, you should…

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  • 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…

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  • How do I use MOVES at Project Scale?

    See More Frequent Questions about MOVES and Related Models . The MOVES model can estimate emissions at national, county or project scale. Project scale is useful for estimating an individual transportation project like an intersection or transit project, but it requires detailed inputs that describing the vehicle population and activity…

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  • How Can I Determine the Effect of Speed on Vehicle Emissions?

    See More Frequent Questions about MOVES and Related Models . MOVES can be run in either “Inventory” or “Emission Rates” mode. With Emission Rates, MOVES reports emission rates for the 16 average speed bins used by MOVES for each hour of the day and additional emission rate output that may…

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  • 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…

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  • What is the definition of "offsite property damage?"

    I am working on the five-year accident history portion of the hazard assessment under the RMP. Section 68.42(a) tells me to include "all accidental releases from covered processes that resulted in deaths, injuries, or significant property damage on site, or known offsite deaths, injuries, evacuations, sheltering in place, property damage…

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  • When does the accident history's five-year period begin?

    The hazard assessment requirements under 40 CFR Part 68, Subpart B include provision of a five-year accident history, as specified at §68.42. When does the five-year period to be reported in the accident history begin? The five-year accident history must include information on all accidental releases from covered processes meeting…

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  • What is the definition of injury?

    Under the hazard assessment requirements of 40 CFR Part 68, Subpart B, an owner or operator must document a five-year accident history including all accidental releases from covered processes that resulted in deaths, injuries, or significant property damage on site, or known offsite deaths, injuries, evacuations, sheltering in place, property…

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  • Do Program Level 1 processes need to do five-year accident histories?

    What is the relationship between the accident history criteria for Program 1 and the five-year accident history? If my process is eligible for Program 1, do I still need to do a five-year accident history? The five-year accident history is an information collection requirement that is designed to provide data…

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  • Does MOVES Incorporate Anticipated Improvements in VOC Emission Factors Resulting from Improved Fuel Economy?

    See More Frequent Questions about MOVES and Related Models . Changes in fuel consumption affect VOC emissions by reducing refueling vapor losses and spillage. Other emissions (such as sulfates) are also affected by fuel consumption. MOVES incorporates changes due to fuel economy requirements that were finalized as of the date…

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  • Can I use MOVES to Model Emissions from Vehicles in other Countries?

    See More Frequent Questions about MOVES and Related Models . The MOVES model was designed specifically to model the emissions from vehicles and equipment designed to meet emission standards in the United States. There are considerable challenges to adapting the MOVES framework to other nations, primarily around the need for…

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  • How can I run MOVES3 for the entire U.S or for an entire year?

    See More Frequent Questions about MOVES and Related Models . The most accurate national MOVES runs are done for every county and hour and then averaged together in the output, but, depending on your intended use of the results, it’s also possible to pre-aggregate the MOVES inputs to run the…

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  • How complete are the data in the National Emissions Inventory?

    While the goal of the National Emissions Inventory (NEI) program is to include all emissions data, there are always challenges meeting this goal. The answer about completeness of coverage of sources depends on the emissions sector and pollutant. In general, the criteria air pollutants and precursors (CAPs) are expected to…

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  • Where is more information available about emissions estimation methods used by the EPA?

    For criteria air pollutants and precursors as well as for hazardous air pollutants, the methods are described in the technical support document (TSD) for the latest National Emissions Inventory (NEI) available from the main NEI page . For greenhouse gas emissions, you can find greenhouse gas inventory methods from the…

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