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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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  • Will there be an increase in turbidity (cloudiness or muddiness) or silt in the streams?

    The increased flow from this work is expected to be minimal and should not impact turbidity or silt.

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  • Will returning the natural flow of water to Sulphur Run disturb areas with sheen?

    Conditions in the streams are much improved because of previous cleanup work conducted in 2023. Although oily sheens remain, they are settled in the sediment and do not impact surface water unless disturbed. The increased water flow to Sulphur Run will be minimal and is not expected to disturb sheen…

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  • What do I have to do in preparation for the cleaning?

    Cleaning crews will not move any of your personal belongings, including furniture or appliances. To ensure the most thorough cleaning of your home or place of business, please clear countertops and other surfaces, and limit excess clutter. Norfolk Southern will provide a few boxes if needed to allow for easy…

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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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  • When can we access the streams again?

    The upcoming cleanup efforts will focus on oil-based compounds which, based on recent sampling, are the only derailment-related contaminants remaining in the creeks. Please obey all posted signage and continue to avoid access in Sulphur and Leslie Runs until further notice.

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  • What is the status of the cleanup at the site?

    In October 2023, it was announced that the excavation work, which removed the known areas of contaminated soil at the derailment site, was complete. The soil double-check work has been ongoing for months and is expected to continue into the fall. The timeline of our expected completion plans for final…

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  • Why collect the rainwater and snowmelt around the derailment site?

    Until excavation work and confirmatory sampling are completed, any wastewater collected from the derailment site is considered a “listed hazardous waste” because it may have come into contact with vinyl chloride or other hazardous contaminants from the derailment. Even though the soil contamination has been removed, our double-check work is…

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  • What has changed?

    For the past several months as the collected wastewater has gone through the system, sample results have shown that the wastewater meets the standards set for vinyl chloride and other derailment-caused contaminants without treatment, meaning it can be disposed of as non-hazardous waste. Testing of the collected wastewater will continue…

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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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  • Will someone explain the process to me so that I can decide if I want cleaning?

    During your pre-cleaning interview, representatives from EPA and Norfolk Southern will explain the cleaning process, assess time and resource needs, answer questions, and if desired schedule a cleaning date.

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  • What is the status of the cleanup work in the streams?

    There is still more work to be done in Leslie and Sulphur Runs. EPA and Ohio EPA are reviewing the Norfolk Southern sediment mitigation workplan. More cleaning will likely start before April and is expected to continue through July.

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  • How will a cleaning date be scheduled?

    A scheduling specialist will contact you to find a date and time for a pre-cleaning interview at your home or place of business.

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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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