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Displaying 1 - 15 of 158 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 I Create Scripts to run MOVES3 from the Command Line?
See More Frequent Questions about MOVES and Related Models . While the easiest way to interact with MOVES3 is via its graphical user interface (GUI), it is sometimes useful to process MOVES RunSpecs in batches via the Windows command line. To this end, MOVES3 has a set of commands that…
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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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How Can I Reduce the Time Needed to Run the Nonroad Emission Factor Post-Processing Scripts?
See More Frequent Questions about MOVES and Related Models . Very long run times are not unusual for Nonroad emission factor post-processing scripts, particularly with a large output database. To reduce script run time, we recommend doing the following: Reduce the size of your output database by choosing just the…
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How do I Obtain the Populations for Each of the MOVES Source Types?
See More Frequent Questions about MOVES and Related Models . To output vehicle populations, when setting up your RunSpec select the "Inventory" calculation type from the Scale panel and the "Population" activity option from the General Output panel of the MOVES GUI. The movesactivityoutput table in your MOVES output database…
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How are Counties Mapped to Fuel Regions in MOVES? How Can I Substitute Alternate Fuel Formulations?
See More Frequent Questions about MOVES and Related Models . The RegionCounty table in the MOVES default database maps each county to a MOVES fuel region (defined by regionCodeID). If you are conducting a County or Project Scale Run, you do not need to modify this table to use alternate…
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Can MOVES Report Output in Terms of Fuel Consumption?
See More Frequent Questions about MOVES and Related Models . Although gallons of fuel consumed are not reported by MOVES, the factors used to convert total energy consumption (a MOVES reporting option) to gallons of fuel are contained in the FuelSubtype table (energy content, reported in kilojoules per gram of…
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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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All I do is produce corn ethanol and sell it all to X Company, which is an ethanol marketer. Do I have to do anything, or can X Company generate the RINs for me?
See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . Each producer of renewable fuel is responsible for generating the RINs that represent that renewable fuel. This function cannot be delegated or assigned to any other party, including a party to whom a producer sells its product. Question…
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How do I use MOVES at Project Scale?
See More Frequent Questions about MOVES and Related Models . The MOVES model can estimate emissions at national, county or project scale. Project scale is useful for estimating an individual transportation project like an intersection or transit project, but it requires detailed inputs that describing the vehicle population and activity…
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If blenders either opt not to trade or are not allowed to trade, who will be responsible for tracking these RINs through the system?
See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . The blender must submit quarterly RIN transaction reports to EPA that will document all RIN transactions, including RIN purchases, RIN sales, and expired RINs. RINs that are reported purchased and thereafter are not sold will be identifiable through…
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Prior to the RFS rule, industry has used an equation for standardization of ethanol volumes that carries the correction factor out to 5 digits rather than 7 digits as in the formula given in the RFS rule at 80.1126(d)(7)(i). Will use of the equation curre
See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . Because the difference between the five-digit and seven-digit factors is extremely small, regulated parties may find that it makes no practical difference whether they use the shorter factor for batches of a certain size . If it makes…
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We are considering developing a PTD that lists ethanol and denaturant as separate items being transferred. RINs would be generated for the entire volume of denatured ethanol. If, for example, we transfer 950 gallons of ethanol and 50 gallons of denaturant
See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . The RINS should not be split between ethanol and denaturant. Section 80.1153(a) of the RFS rule refers to "the volume of renewable fuel that is being transferred" as necessary information for PTDs. Denatured ethanol is the "renewable fuel"…
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If a specific refinery is the producer of renewable diesel, I assume they need a facility ID number, but we can use the RINs for aggregate company compliance.
See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . Yes. The facility ID number is used to generate the RIN, but the RIN can be separated and used for compliance on a company-wide aggregate basis, subject to any applicable restrictions in the regulations such as regulation Sections…
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