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Displaying 1 - 9 of 9 results
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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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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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Is the volume of renewable fuels a fixed number of gallons? How does this affect an obligated party's requirements?
See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . The volume of renewable fuel used as the basis for calculating the percentage renewable fuel standards is fixed by CCA 211(o)(2)(B) for certain years (through 2012 for biomass-based diesel and 2022 for other renewable fuels), with volumes after…
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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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Can 2009 Cellulosic Biomass ethanol RINs (with a D code of 1) be used to satisfy an obligated party?s Cellulosic Biofuel and/or Advanced Biofuel RVO in 2010? Is there a 20% rollover cap on this type of RIN being used to satisfy the Cellulosic and/or Advan
See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . 2009 cellulosic biomass ethanol RINs with a D code of 1 that are not used for compliance purposes in 2009 can be used to meet the cellulosic biofuel, advanced biofuel, and total renewable fuel RVOs in 2010. The…
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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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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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I understand under CAA Section 211(o), compliance can be deferred for a year as long as the obligated party complies the next year. How does one petition for a one-year deferral? What criteria are considered?
See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . According to §80.1427(b), an obligated party may carry a deficit from one compliance year to the next under certain conditions. No petition for a deficit carryover is required. An obligated party will be presumed to be carrying over…
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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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