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  • How can I find a certified renovation firm in my area?

    EPA’s website includes a search tool that allows consumers to find certified firms in their area. You can find this search tool at https://cdxapps.epa.gov/ocspp-oppt-lead/firm-location-search . Alternatively, you can contact the National Lead Information Center at 1-800-424-LEAD [5323] for a list of contractors in your area. Question Number: 23002-16209 Find a…

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  • Who is covered by the new Renovation, Repair, and Painting (RRP) Rule?

    The Renovation, Repair, and Painting (RRP) Rule applies to all firms and individuals who are paid to perform renovation, repair, and painting projects that disturb paint in pre-1978 housing and child-occupied facilities. This includes home improvement contractors, maintenance workers, painters and other specialty trades. Question Number: 23002-24685 Find a printable…

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  • My school district will be performing asbestos abatement in a kindergarten classroom that was built before 1978. Do the asbestos abatement workers also need to comply with the RRP rule?

    Answer: Yes, if the asbestos abatement disrupts over six square feet of painted surface per room in an interior, or over 20 square feet of painted surface on an exterior, or involves window replacement or demolition of painted surfaces. If so, the asbestos abatement will need to be performed by…

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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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  • 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…

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  • What is included in the emissions “Tiers”?

    The Tiers are assigned by a Source Classification Code (SCC), which has the most detail about the emissions processes that generate the emissions. The full list of SCCs, their associated Tiers, and the SCC descriptions is available online at https://ofmpub.epa.gov/sccwebservices/sccsearch/ .

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  • Where can I find biomass emission limits for biomass burning in industry? I am looking for limits on particulate matter, SO2 and NOx.

    For information on EPA air emission standards for industrial sources, please visit this website. If you need additional help with specific questions, please use the contact us link on one of these pages to inquire further with staff in the emission standards program. New Source Performance Standards

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  • 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…

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  • How do I get access to the Emissions Inventory System?

    Access to the Emissions Inventory System (EIS) is available to state, local, tribal agencies, their representatives (such as contractors), to multijurisdictional organizations (MJOs), and to EPA staff. The EIS is not available to the public. Instructions for access to the EIS is available in the Emissions Inventory System (EIS) User’s…

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  • What does an annual emissions value in the NEI represent (one year or multiple years)?

    The NEI provides total annual emissions for a single year.

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  • 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…

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  • The FTP download is not working; what do I do?

    Option 1:  The FTP site is active, but some browsers are no longer supporting the ftp:// protocol.  You can access the same data by replacing “ ftp://newftp.epa.gov / ” with  “ https://gaftp.epa.gov/ ” and keep the rest of the URL the same.  The filenames you see will be shorter, but…

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  • The point source maps are not working on the NEI data tab. What do I do?

    The point source maps use a web service provided by Envirofacts. Please report your problem to the Envirofacts “Contact Us” page here .

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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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