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Displaying 1 - 15 of 15 results
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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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What are the recordkeeping requirements for a renewable fuel producer that uses used cooking oils and fats as feedstocks for renewable fuel?
See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . Renewable fuel producers using used cooking oils or animal wastes as feedstocks are required under 40 CFR 80.1454(d)(3) to obtain from their feedstock supplier, and maintain in their records, documents which certify that the feedstock meets the definition…
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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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How does the "active management" requirement in the definition of renewable biomass apply to land that changes status in the future?
See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . In RFS2, EPA has interpreted the EISA requirement that existing agricultural land be "cleared or cultivated at any time prior to [December 19, 2007] and actively managed or fallow and nonforested" to apply to land that existed as…
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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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What materials from non-federal forestlands meet the definition of renewable biomass in RFS?
See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . Slash and pre-commercial thinnings from non-federal forestland that is not ecologically sensitive forestland qualify as renewable biomass for purposes of RFS. Slash is defined in 40 CFR 80.1401 as the residue, including treetops, branches and bark, left on…
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Does a renewable fuel producer have to report and maintain records on the feedstocks for every batch of renewable fuel they produce?
See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . All renewable fuel producers must report and maintain records concerning the type and amount of feedstocks used for each batch of renewable fuel produced (see 80.1451(b)(1)(ii)(K) and 80.1454(b)(3)(vi)). With regard to the renewable biomass recordkeeping and reporting requirements…
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How does a renewable fuel producer document that the MSW feedstock that they are using to produce cellulosic ethanol meets the definition of separated MSW as defined in Section 80.1426(f)(5)(i)(C )? How does the producer quantify the portion of the final
See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . The renewable fuel producer using separated MSW feedstock to produce renewable fuels such as cellulosic ethanol, cellulosic diesel, cellulosic naphtha, etc. must document that their feedstock meets the definition of separated municipal solid waste (MSW), which is "material…
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How does the "active management" requirement in the definition of renewable biomass apply to land that changes status in the future?
See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . In RFS2, EPA has interpreted the EISA requirement that existing agricultural land be "cleared or cultivated at any time prior to [December 19, 2007] and actively managed or fallow and nonforested" to apply to land that existed as…
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Are palm oil plantations considered agricultural land or tree plantations under RFS2?
See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . Palm oil trees are planted and managed for the purpose of harvesting palm fruit and not for harvesting the trees themselves, in the same way that a fruit orchard is planted and managed to yield fruit and not…
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What are the units of NEI emissions data?
NEI emissions values represent total annual emissions for the inventory reporting year. Criteria air pollutants and precursors (CAPs) are reported in short tons per year , and hazardous air pollutants (HAPs) are reported in lbs per year .
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What is the definition of VOC?
There is a regulatory definition of VOC. It is found in 40 CFR 51.100. CFR - code of federal regulations. The definition relates to the intent and requirements of the Clean Air Act. Excerpt from “Volatile Organic Compounds” Definition per 40 CFR Part 51.100(s): " Volatile organic compounds (VOC) means…
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What does "NEC" stand for in the emissions sectors?
NEC means “not elsewhere classified” and includes SCCs that are not assigned to any of the other specific industrial process sectors. If you look at the SCC code table available at the SCC web site and filter on the Sector name that includes “NEC”, you can see the type of…
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What are the RFS2 requirements for renewable fuel producers to track soy feedstocks?
See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . Since soy is considered a planted crop for purposes of RFS2, producers of renewable fuel made from soy grown on U.S. agricultural lands are covered by the aggregate compliance approach in §80.1454(g). Those producers using domestic soy need…
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