Search Frequent Questions

Filter By:

Active filters:

Remove all filters

Displaying 1 - 15 of 19 results

  • 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…

    • Last published:

  • 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…

    • Last published:

  • 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…

    • Last published:

  • Can I get the Lead-Safe Certified Firm Logo file in different resolution or in black and white?

    Answer: Yes, please submit your request through our contact us page . Question Number: 23002-14639 Find a printable PDF copy of all frequent questions pertaining to lead .

    • Last published:

  • How and where can I use the Lead-Safe Certified Firm Logo?

    Answer: The Lead-Safe Certified Firm Logo must be reproduced so that all of its components are legible, including your firm's certification number. The Logo must not be altered or distorted in any way. You MAY -- Use the Logo to identify your firm as an RRP-certified firm. Firms that are…

    • Last published:

  • How do I get my lead-safe certified firm logo?

    Answer: Your customized firm logo will be emailed to you in your certification approval package. Approval packages are emailed from [email protected]. To help ensure receipt of email correspondence, we recommend you add the [email protected] email address to your contacts to ensure it arrives in your inbox rather than a SPAM…

    • Last published:

  • I can't open the Lead-Safe Certified Firm Logo file I have been sent. What format is it in?

    Answer : The Logo is in a standard .jpg file. It is approximately 900KB to ensure clarity. If this size is too large, or a different format is needed, please submit your request using our Contact Us page . Question Number: 23002-18056 Find a printable PDF copy of all frequent…

    • Last published:

  • How are emissions trends compiled?

    For criteria air pollutants and precursors, the emissions trends are based on the triennial National Emissions Inventory data, with some interim year data included for non-triennial years. The methods and interim-year approaches are described on the “Development of Data” tab included with the data provided on the Air Pollutant Emissions…

    • Last published:

  • How do I determine what SCCs have changed between inventory years?

    These are available in the EIS (Reporting Code table) or public website: https://sor-scc-api.epa.gov/sccwebservices/sccsearch/ Filter on “last inventory year” to remove SCCs no longer active. If this column has a date in it, then the SCC has been retired as of that date. The “last updated date” (column J) indicates when…

    • Last published:

  • Where are the NAICS/ SIC and SCC codes changes that have been implemented for the 2017NEI?

    Please refer to the NEI webpage for 2017 documentation , and follow the link for Appendix 2 - 2017 NEI Plan Code Changes. That Excel file describes anticipated changes for the SCCs and NAICS and includes a helpful read me. I'll just note in the next NEI/EIS email that SCC…

    • Last published:

  • Are trainers authorized to use the EPA Lead-Safe Certified Logo?

    Answer: Accredited training providers may use the logo on their site and marketing materials as long as it is used as a tool to guide renovators through the firm certification process (i.e., explain the difference between firm certification and individual training). Training providers may inform students that only certified firms…

    • Last published:

  • How often are the NEI data updated and how frequently are the data published?

    The full NEI is created for every third inventory year (e.g., 2008, 2011, 2014, and 2017). The data for each version has been updated two times each for the 2008, 2011, and 2014 NEI cycles. For the 2017 NEI and beyond, the EPA is trying to publish only a single…

    • Last published:

  • Are the GHGs in the National Emissions Inventory Complete?

    No, the 2020 National Emissions Inventory (NEI) does not comprehensively capture all sources and sinks of greenhouse gases (GHGs) in the United States. For this information, users should review the EPA’s annual Inventory of U.S. Greenhouse Gas Emissions and Sinks . However, the NEI does report GHG emissions for select…

    • Last published:

  • Products authorized for use on oil discharges

    Does EPA maintain a list of products that are authorized for use on oil discharges? If so, how can a manufacturer have their product included on the list? Section 311(d)(2)(G) of the Clean Water Act (CWA) directs EPA to prepare a schedule of dispersants, other chemicals, and oil spill mitigating…

    • Last published:

  • What are EPA’s plans for the 2020 National Emissions Inventory given the atypical situation from COVID-19 that is impacting emissions? What will it be used for?

    The EPA intends to prepare a 2020 National Emissions Inventory in collaboration with state, local, and tribal air agency partners. The Air Emissions Reporting Rule (AERR) requires states and delegated local and tribal agencies to report emissions from stationary sources and provide model inputs for onroad and nonroad sources (except…

    • Last published: