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  • How is waste leaving the derailment site tracked?

    EPA on-scene coordinators are assigned to track liquid–and solid–waste trucks entering and leaving the derailment site. They log every truck, oversee the loading and covering of waste, truck washing and weighing, and the proper placement of placards. Responders take pictures throughout the process. All trucks go to approved and regulated…

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  • What is Vermiculite?

    Vermiculite is the mineralogical name given to hydrated laminar magnesium-aluminum-iron silicate that resembles mica in appearance. All vermiculite ores contain a range of other minerals that were formed along with the vermiculite in the rock. Vermiculite ores from some sources have been found to contain asbestos minerals but asbestos is…

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  • What happens after the track work is completed?

    The track work has been the highest priority to remove most contamination as early as possible. This, plus preventing the spread of contamination by capturing water from the site and constructing a bypass of Sulphur Run around the site will continue into June. While track work and water management continue…

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  • What does the on-site wastewater treatment process on site entail?

    EPA has approved a workplan to allow Norfolk Southern to treat hazardous wastewater on-site, removing vinyl chloride and other contaminants to dispose of the treated wastewater off-site as a non-hazardous waste. Currently, the train derailment site generates nearly one million gallons of wastewater per week from the collection of stormwater…

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  • Where is the treated wastewater going?

    The wastewater treatment system removes derailment contaminants using several steps, including sedimentation and filtration. The treated wastewater is then tested to verify vinyl chloride is below the drinking water standard. Once treated, water is sent to facilities certified to accept non-hazardous wastewater and that are regulated by federal and state…

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  • Are there health risks to driving through Taggart Street?

    There are no anticipated health risks along Taggart Street associated with project activities. As work proceeds, to ensure worker and community safety, the Unified Command will continue to evaluate site conditions for health and safety considerations. While traffic will be able to proceed through the work areas along Taggart Street…

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  • How much waste was removed as part of the cleanup efforts?

    In late October, EPA announced the completion of major derailment site excavation. Remaining contaminated soil and debris were removed for off-site treatment or disposal. Contact water continues to be treated in an on-site wastewater treatment system prior to removal for off-site disposal. As of November 13, over 174,000 tons of…

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  • Are the trucks leaving the derailment site spreading contamination?

    Each truck leaving the derailment site that is carrying contaminated waste is checked to ensure all material is safely secured. Also, all trucks go through a washing process before departing the site. The washing process ensures the vehicles’ wheels and undercarriage are free of dirt and mud. Street sweepers are…

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  • Are the NO Values in the MOVES Output Files Actually NO (Molecular Weight 30), or is the NO Expressed as NO2 (Molecular Weight 46)?

    See More Frequent Questions about MOVES and Related Models . The NO values in all versions of MOVES2014 (and MOVES2010b) output files are expressed as NO2 (molecular weight 46). HONO and NOx are also expressed in terms of NO2.

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  • What is the process for backfilling excavated areas at the derailment site?

    Areas that were excavated as part of the derailment cleanup effort will be backfilled with clean soil. Before soil is chosen as backfill it is tested for chemicals and heavy metals. While the source of backfill is still being identified, some areas have been temporarily backfilled with ballast (large gravel)…

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  • What are the large blue tanks at the derailment site?

    As EPA continues overseeing cleanup work at the derailment site, two large blue lake tanks will reduce EPA’s on-site frac tank footprint. Frac tanks, for smaller quantities of liquid storage, have been used since the derailment to stage liquid before it is removed for off-site disposal.

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  • What are some uses of Vermiculite?

    Vermiculite has been used in various industries for over 80 years. It is used in the construction, agricultural, horticultural and industrial markets. Examples of products that contain vermiculite include potting soil mixes, loose fill insulation, and packing material. For more information, visit the EPA webpage: Protect Your Family from Asbestos-Contaminated…

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  • What is the Difference Between Extended Idling and Normal Idling? Is it Possible to get Distinct Idling Emission Output for any Vehicle Type? Can this be Done in the Emission Rate Mode, or only Inventory Mode?

    See More Frequent Questions about MOVES and Related Models . Extended idling is a distinct emission process defined as the overnight idling of long-haul trucks with sleeper cabs at truck stops and other locations during federally required downtime. During such idling periods, these engines experience unusual loads (televisions, air conditioning…

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  • How does MOVES Classify Light-Duty Trucks?

    See More Frequent Questions about MOVES and Related Models . There are two definitions used in MOVES for light duty trucks. The source use type light duty trucks (sourceTypeID values of 31 or 32) use the Federal Highway Administration (FHWA) VM-1 definition of light duty vehicles used to report vehicle…

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  • How is wastewater being collected at the derailment site?

    EPA is ensuring that water coming into contact with the derailment site does not runoff into the surrounding area. Wastewater is generated after rain falls on a contaminated area, and from cleaning and washing trucks before they leave the derailment site. Wastewater is collected with pumps and pipes, and temporarily…

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