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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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  • How does EPA oversee cleanup at the derailment site?

    EPA leads the Unified Command consisting of different agencies to approve Norfolk Southern’s workplans and weekly activities. EPA also coordinates with other agencies to perform oversight, such as with Ohio EPA, the Columbiana County Health District, and the Pennsylvania Department of Environmental Protection. EPA and Ohio EPA personnel oversee safety…

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  • What are the health agencies doing?

    The Centers for Disease Control and Prevention and Agency for Toxic Substances and Disease Registry (ATSDR) are analyzing their Assessment of Chemical Exposure (ACE) survey results to assess the health impacts of the train derailment. CDC and ATSDR continue to support the Ohio and Pennsylvania health departments and will be…

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  • Can a facility divide a process when assigning program levels?

    My process includes a series of interconnected units, as well as several storage vessels that are co-located. Several sections of the process could qualify for Program 1. Can I divide my process into sections for the purpose of assigning Program levels? No, you cannot subdivide a process for this purpose…

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  • If a stationary source has processes ineligible for Program 1, are all processes ineligible?

    If a stationary source has several processes that are covered under 40 CFR Part 68, and some of those processes have had an accidental release within the past five years (effectively making those processes ineligible for Program 1 status), are the individual processes from which no accidents have occurred also…

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  • If a covered process has an accident, when does it lose eligibility for Program 1 status?

    A process covered under 40 CFR Part 68 is eligible for Program 1 requirements if it meets all of the criteria listed at 40 CFR §68.10(b). Those criteria include a requirement that the process cannot have had an accidental release of a regulated substance that led to offsite death, injury…

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  • Applicability of program levels and prevention program requirements for co-located vessels

    I have a tank with 1,000,000 pounds of toluene diisocyanate (TDI), which is covered under the RMP rule, but not under OSHA PSM. Considered by itself, the TDI would be Program 2 for EPA. The tank, however, is close to equipment that has chlorine above the applicable threshold and is…

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  • Changing from a Program 2 or 3 process to a Program 1 process

    If five years have passed since the last accident involving a covered process, and that process meets the other two requirements identified under 40 CFR §68.10(b) for Program 1 eligibility, could that process become a Program 1 process even if it had previously been identified as a Program 2 or…

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  • Now that the track is rebuilt, what else needs to be done and how long will it take?

    There is still a lot of work to do. Contaminated soil to the north and south of the tracks need to be removed. A full site assessment, including extensive sampling, of areas and properties near the derailment site needs to be conducted. A full assessment of impacted creeks will be…

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  • If there is a government shutdown, will work continue on the cleanup?

    A 45-day continuing resolution was recently passed to avoid a shutdown. EPA’s emergency response efforts, such as in East Palestine, would move forward under a lapse in appropriation. As a result, EPA personnel would continue to fully support those efforts during a lapse.

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  • What is the process for refilling 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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  • 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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  • Assigning program level 1 if a public receptors is just beyond distance to endpoint

    Our distance to the endpoint for the worst-case release is 0.3 miles. The nearest public receptor is 0.32 miles away. What tools are available to document that the public receptor is beyond the distance to the endpoint so we can qualify for Program 1? The results of any air dispersion…

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  • Process that meets Program 1 requirements and Program 3 applicability

    Program 3 applies to processes in certain NAICS codes as well as any process subject to the OSHA Process Safety Management (PSM) standard, unless the process is eligible for Program 1. If a process meets the requirements of Program 1, but is also in NAICS code 32211 (one of those…

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