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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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  • Where can I find the East Palestine City Park soil sampling results?

    You can find East Palestine City Park soil sampling results at: East Palestine City Park soil sampling results

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  • What were the results from the phase 1 of soil sampling?

    Phase 1 of soil sampling is complete, and we have received most of the preliminary data. The vast majority of results are within typical ranges for soil. Samples taken on private properties are all within typical soil levels, and only a few samples taken along public right-of-way (next to roads…

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  • What are the next steps?

    The sampling data will be evaluated to determine if additional sampling or other action is necessary (additional information will be made available soon). Evaluation of results and future sampling plans will guide EPA’s future work and environmental monitoring in the East Palestine area.

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  • How were soil sample locations chosen?

    The study area was determined based on evacuation zones, plume modeling, field observations, and areas most likely to be impacted by the vent and burn. Event Reconstruction Plume Map

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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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  • Where can I find soil sampling data and results?

    EPA will release validated (final) and non-validated (preliminary) soil sampling results from East Palestine and surrounding Ohio and Pennsylvania areas as they become available. As soon as the quality of non-validated preliminary data has been fully assessed and documented, EPA will post validated data on the East Palestine, Ohio Train…

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  • What do the symbols and words on my water well sampling results mean?

    One common symbol on results is μg/L, which stands for microgram per liter. This indicates the mass of a chemical in one liter of water. Columbiana County Health District has a guide to help understand terms in well sampling results reports. You can find the guide at Columbiana Health Data…

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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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  • 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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  • 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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  • 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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  • What are soil sampling results compared to?

    Levels of contaminants in soils are compared to EPA regional screening levels and known typical concentration levels in soil. Screening levels are a tool that responders use to identify potential risks to human health and the environment and if there is a need for further investigation. Screening levels are health…

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  • What is the status of the soil sampling effort?

    As of early May 2023, 148 locations have been sampled. Each location includes a shallow sample (0-1 inch) and deeper sample (1-6 inches). The data were validated by experienced chemists to assess the quality of the preliminary data. During the data validation process, chemists check to see that the data…

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  • What chemicals did the soil sampling plan focus on?

    The soil sampling plan focused on determining if the area was impacted by soot and ash from the vent and burn and if the area was significantly impacted compared to areas not impacted by soot and ash. Samples were analyzed for semi-volatile organic compounds (SVOCs) and dioxins (including furans). To…

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