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  • Where can I find older NEI data (prior to 2008)?

    The raw data and summaries that are still available (dating back to 1990) can be obtained from the web page https://www.epa.gov/air-emissions-inventories/pollutant-emissions-summary-files-earlier-neis . Starting with 2001 data, a more limited selection of summary files are available.

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  • Determining frequency of coordination activities

    The Risk Management Program regulations require owners and operators of stationary sources to coordinate their response needs annually, or more frequently if necessary, with local emergency planning and response organizations (40 CFR §68.93(a)). Are stationary sources responsible for determining if coordination activities should occur more often than annually? Ultimate responsibility…

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  • Who Must Develop an Emergency Response Program?

    The risk management program regulations require the owner or operator of a covered stationary source to develop and implement an emergency response program as described in 40 CFR §68.95, which must include an emergency response plan, emergency response equipment procedures, employee training, and procedures to ensure the program is up-to-date…

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  • Are biogenic emissions included in the emissions trends Tier 1 data?

    No, the biogenic emissions are not included in the emissions trends Tier 1 data. If needed, users can add the biogenic data either as a separate Tier, or specify its inclusion in the “Miscellaneous” Tier 1 group.

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  • What sources make up the Sectors or Tiers used in the emissions data summaries?

    Tier 1 and Sector categories are assigned by source classification codes (SCCs) that are the most specific processes available in the NEI. The latest SCC list with the Tier 1 and Sector assignments can be downloaded from the EPA SCC website in Comma Separate Values (CSV) format.

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  • Remote coordination with local authorities

    The Risk Management Program regulations require owners and operators of stationary sources to coordinate their response needs annually, or more frequently if necessary, with local emergency planning and response organizations (40 CFR §68.93(a)). If a stationary source is in a remote location and in-person annual coordination is deemed impractical, can…

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  • What is EPA’s response to inaccurate claims about its use of ASPECT?

    The characterizations of EPA’s ASPECT response in East Palestine are false. More information can be found about ASPECT’s response in the . EPA Region 5 requested ASPECT to fly to East Palestine late in the day on February 5, 2023. As soon as the request was made, the aircraft was…

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  • Where can I obtain the hourly data from Continuous Emissions Monitors (CEMs)?

    The CEM emissions data are available from the EPA Clean Air Markets Program Data website.

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  • What is being tested for in EPA’s air testing program?

    Seventy-five different chemicals are tested for on the derailment site and around East Palestine. The air monitoring and sampling network includes 9 monitoring stations, 8 sampling stations, a MINICAM van, and the PTR-MS laboratory vans.

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  • Emergency Response Coordination Activities Effective Date

    The RMP Amendments finalized on January 13, 2017 included a requirement for owners or operators of a stationary source to engage in emergency response coordination activities (40 CFR §68.93). The regulatory text in 40 CFR §68.10(b) states that compliance with these activities must be completed by March 14, 2018. Because…

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  • Where can I get maps and/or emissions of facility emissions data?

    The EPA provides emissions maps in two ways. First, each of the last three NEI years have a “Facility Mapping” tab available on the main NEI page for that inventory year (for example, see the 2020 NEI page). With this tool, maps can be created for one state at a…

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  • Are exercises required as a part of the emergency response program requirements under 40 CFR Part 68, Subpart E?

    Yes. At least once each calendar year, the owner or operator of a stationary source with any Program 2 or Program 3 process must conduct an exercise of the stationary source's emergency response notification mechanisms per 40 CFR 68.90(b)(3) or 68.95(a)(1)(i), as appropriate, before December 19, 2024, and annually thereafter…

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  • How can I get more detailed information? What measurements/sensors are used to measure emissions?

    Access the latest NEI data set . Under 'Sector Summaries - Criteria and Hazardous Air Pollutants by 60 EIS emission sectors', > choose National > for Pollutant, choose PM10 Primary and/ or PM2.5-PRI > Sector, choose all sectors >Submit Query to see results at bottom of page. Open the results…

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  • Types of Information Relevant for Response Planning

    The Risk Management Program emergency response coordination activities require the owner and operator of a stationary source to provide to the local emergency planning and response organizations: the stationary source’s emergency response plan if one exists; emergency action plan; updated emergency contact information; and any other information that local emergency…

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