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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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Why Doesn't my Output Vehicle Miles Traveled (VMT) Match my Input VMT?
See More Frequent Questions about MOVES and Related Models . This problem usually occurs when the run specification does not include all possible vehicle and fuel types. MOVES internally allocates the input VMT to each of the source types and fuel types and only reports the VMT for the fuel…
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What does MOVES Assume for Future Year Fleet Fuel Efficiency and Emissions?
See More Frequent Questions about MOVES and Related Models . MOVES reflects all fuel economy and emissions standards that were final as of the model release date. For a list of recent regulations accounted for in the most recent MOVES version, see the see the Overview of EPA’s Motor Vehicle…
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Does the Fee Rule for Abatement and RRP Programs apply nationwide?
Answer: The rule applies only in those states and tribes without their own authorized lead programs. Currently, EPA implements the Lead-based Paint Activities program in 11 states and the Lead Renovation, Repair, and Painting Rule in 36 states. Question Number: 23002-33305 Find a printable PDF copy of all frequent questions…
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Who is affected by the Fee Rule for Lead Abatement and Renovation, Repair and Painting (RRP) Programs?
The Fee Rule for Lead Abatement and RRP Programs establishes fees that will be charged for training programs seeking accreditation, for firms engaged in renovations seeking certification and for individuals (for example, risk assessors) or firms engaged in lead-based paint activities that govern lead abatement, inspection and risk assessment activities…
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Where can I get more information on the Fee Rule for Lead Abatement and Lead Renovation, Repair and Painting (RRP) Programs?
Answer: You can find fee rule information at Lead Renovation, Repair and Painting Program Rules . You can also contact the National Lead Information Center at 1-800-424-LEAD . Question Number: 23002-33298 Find a printable PDF copy of all frequent questions pertaining to lead .
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Why Are There No Emissions for the Early and Late Hours of the Day for Certain Source Types?
See More Frequent Questions about MOVES and Related Models . MOVES has no start emissions for the certain source types in certain hours of the day. While we know that a non-zero number of these source types do start late at night, our activity data on these trucks and buses…
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Why have the fees for Lead-Based Paint Activities program decreased since they were first implemented in 1999?
Since 1999, EPA has made substantial changes in the way it administers its accreditation and certification program. The transition to the automated federal Lead-based Paint Program (FLPP) database and the associated centralized data processing has resulted in lower overall costs of the Lead-Based Paint Activities program . Question Number: 23002-33300…
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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 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://sor-scc-api.epa.gov/sccwebservices/sccsearch/ .
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How does MOVES Calculate CO2 and CO2 Equivalent Emissions?
See More Frequent Questions about MOVES and Related Models . MOVES calculates the energy it takes to operate an onroad vehicle based on energy consumption rates as explained in the technical reports Greenhouse Gas and Energy Consumption Rates for Onroad Vehicles MOVES3 (pdf) (November 2020, EPA-420-R-20-015) and Exhaust Emission Rates…
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What costs does EPA incur that must be recovered by the fees under the Fee Rule for Abatement and RRP Programs?
Answer: The fees recover EPA's costs for processing applications, enforcing program requirements, and administrative activities such as maintenance of the central database and administering certification examinations. Question Number: 23002-33303 Find a printable PDF copy of all frequent questions pertaining to lead .
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Why does EPA charge fees for accreditations and certifications?
As specified in the Toxic Substances Control Act (TSCA), EPA must establish and implement a fee schedule to recover to the U.S. Treasury the Agency's costs of administering and enforcing the standards and requirements applicable to lead-based paint training programs and contractors. Question Number: 23002-33304 Find a printable PDF copy…
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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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