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Displaying 1 - 15 of 76 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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How do the different parts of particulate matter (PM) fit together?
The various parts of PM in the NEI are related as follows. PM10-FIL > PM25-FIL because PM10-FIL includes PM25-FIL PM25-PRI = PM25-FIL + PM-CON This equation only applies at the process level. Because some sources only can report PM2.5 (due to test method differences), this equation does not apply to…
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How does PM2.5 relate to PM species such as EC, OC, SO4, NO3, PMFINE, and DIESEL-PM25?
Primary PM2.5 estimates are speciated into the five PM species in the NEI: elemental (black) carbon (EC), organic carbon (OC), nitrate (NO3), sulfate (SO4), and the remainder of PM25-PRI (PMFINE). Diesel engine PM25-PRI and PM10 emissions are also labeled as DIESEL-PM25 and DIESEL-PM10 for mobile source diesel engines. For all…
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I have not seen a reference to the EPA CDX system. Is the CDX system already established or can we submit reports in our choice of electronic formats?
See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . The Central Data Exchange (CDX) is an established portal through which electronic data are submitted. All registered parties will have to first register with CDX in order to receive a CDX registration number. More information may be found…
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Do I have to register to use CDX and is this a separate registration process?
See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . You will have to register with CDX. (Registering with CDX is not the same as registering under regulation Section 80.1150.) Instructions are available via our Reporting for Fuel Programs web site. Question and Answer was originally posted at…
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Does EPA’s announcement of June 18, 2010 modify the Lead Renovation Repair and Painting Rule’s requirements that contractors use lead-safe work practices when working in pre-1978 housing or child-occupied facilities?
Answer: This announcement does not change the requirement that all contractors take steps to protect children and families from the dangers of lead poisoning by becoming certified and following the work practice standards and the associated recordkeeping requirements. As of April 22, 2010 all contractors have been required to be…
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How does the June 18, 2010 announcement impact renovators in states that have adopted their own RRP programs?
Answer: If you work in a state authorized by EPA to run their own renovation program, you should contact them for information on their certification requirements. If you work in a state where EPA administers the renovation program your firm needs to be certified by EPA. Please refer to the…
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Thousands of renovators are already trained and their firms are EPA certified. Will EPA enforce against renovators who did not receive their training certification before December 31, 2010?
It is most important that all contractors follow the RRP work practice standards. However, EPA is providing additional time for renovation firms and workers to obtain the necessary training and certifications before the enforcement of the firm certification and individual renovator requirements begins. Therefore, renovators who have not been able…
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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…
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What sources make up the Tier 1 categories used in the emissions trends?
Tier 1 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 assignments can be downloaded from the EPA SCC website in Comma Separate Values (CSV) format.
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What is the cause of the large decrease in electric utility emissions, particularly sulfur dioxide, starting in 1995?
SO2 emissions reductions from utilities during this time are primarily attributed to the impacts of the acid rain program. As described on EPA’s Acid Rain Program web page, Phase 1 of this program began in 1995 and affected 263 units at 110 most coal-burning electric utility plants in 21 eastern…
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Can I get access to the Emissions Inventory System if I am not a data provider to EPA?
The Emission Inventory System (EIS) is a secured database for EPA and State/Local and Tribal Air Agencies only. The EIS is used to develop the National Emission Inventory (NEI). While you cannot have access to EIS, you can have access to the current and past NEIs through EPA’s NEI website…
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If re-transmission is necessary due to fault on EPA?s part, why won?t EPA pay for re-transmission?
See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . EPA will take all reasonable steps to properly maintain equipment, services, and testing necessary to effectively and reliably send and receive documents via EDI. Although EPA is unable to pay for re-transmission costs, we will exercise the highest…
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Could we become the delegated authority for submission of reports on behalf of our members?
See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . Individual blenders could rely on your association to submit reports to EPA on their behalf. . However you should understand that if any reports are not submitted or are submitted improperly then responsibility would fall upon the individual…
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Section 80.1164(a)(1)(ii) of the regulation states that the CPA conducting the attest engagement must obtain documentation of any volumes of renewable fuel used in gasoline during the reporting year; compute and report as a finding the volumes of renewabl
See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . This provision is intended to require the CPA to include in his or her report any volume of renewable fuel actually used in gasoline produced at the refinery or imported by the importer, but is not intended to…
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