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  • How do the changes in the 2006 Amendments apply to mobile refuelers?

    Mobile refuelers are now exempt from the following sized secondary containment provisions that still apply to all other bulk storage containers and mobile/portable bulk storage containers: • Sections 112.8(c)(2) and (11) for petroleum oils • Sections 112.12(c)(2) and (11) for animal fats and vegetable oils These provisions previously required sized…

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  • 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…

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  • 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…

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  • SPCC Rule schedules for inspections, tests, and evaluations

    The SPCC rule requires inspections, tests, and evaluations of above ground containers (40 CFR §112.8(c)(6)). Does the rule set schedules for how often these need to be conducted? The SPCC Rule does not prescribe a specific frequency or methodology for performing the required inspections, evaluations, and tests for aboveground containers…

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  • What is the purpose of a cellulosic biofuel waiver credit?

    See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . Under EISA, EPA is required to make cellulosic biofuel waiver credits available for years where we waive some portion of the statutory volume for cellulosic biofuel. These credits can then be used by obligated parties to comply with…

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  • Are mobile refuelers exempt from integrity testing requirements?

    Pursuant to 40 CFR §112.8(c)(2), mobile refuelers are exempt from the secondary containment requirements for bulk storage containers. Are mobile refuelers also exempt from the requirements for integrity testing in §112.8(c)(6)? Since mobile refuelers are mobile or portable bulk storage containers, the other provisions of §112.8(c) still apply. Therefore, mobile…

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  • 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…

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  • Is fuel sold in U.S. territories, such as Puerto Rico, required to comply with RFS2?

    See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . United States territories, such as Puerto Rico, are not included in the RFS2 program unless they opt-in according to §80.1443. See also §§80.1407(f) and 80.1426(b).

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  • Could you please expand upon the definition of the cellulosic biofuel waiver credit that may be for sale? I am not certain when, or if, a paper or pulp company could obtain a waiver credit or benefit from selling a waiver credit?

    See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . Cellulosic biofuel waiver credits may only be purchased by obligated parties (e.g., gasoline and diesel fuel refiners and importers) from EPA. See section 80.1456(c).

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  • 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…

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  • Is the Renewable Fuels Mandate in ethanol equivalent gallons?

    See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . The percentage standards applicable under RFS are intended to be met with ethanol-equivalent volumes of renewable fuel. As a result, a gallon of ethanol counts as one gallon of renewable fuel for purposes of compliance with the four…

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  • 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…

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  • 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…

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