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Displaying 1 - 15 of 16 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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In the past, EPA has, with the assistance of industry trade associations, produced fuels brochures for use at retail outlets explaining new fuel programs and addressing performance and air quality issues. Is EPA planning a similar effort with respect to t
See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . In November 2005, the Clean Diesel Fuel Alliance was formed. Many public and private organizations are collaborating through the Clean Diesel Fuel Alliance to facilitate the introduction of ULSD. The U.S. Department of Energy (DOE), EPA, engine, vehicle…
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When will construction begin in the Silver-Bow Creek Corridor?
Construction in the Silver Bow Creek corridor began in 2024 with the Grove Gulch Project.
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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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A tank truck common carrier picks up a load of ULSD at a Shell terminal and delivers it to a Flying J truckstop. The carrier only provides a transportation service, does that carrier have any registration or reporting duties?
See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . No, the carrier does not have registration or reporting duties as long as taxes were assessed (in the case of highway fuel) or dye was added (in the case of NRLM) at the terminal. There are recordkeeping and…
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Will refiners produce No. 1 diesel fuel at 15 ppm sulfur? What other cold weather-gelling strategies are available to the end-user?
See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . Yes, some refiners will produce No. 1 diesel fuel. There are also various other cold-flow improver additives currently on the market as well. Question and Answer was originally posted at Questions and Answers on the Clean Diesel Fuel…
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Many refiners currently make a jet fuel meeting <500 ppm requirements. If refiners make a jet fuel meeting 15 ppm requirements, there may be compatibility (safety or performance) issues for jet engine manufacturers. Have these manufacturers been consulted
See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . The highway and nonroad diesel programs do not require that refiners produce 15 ppm sulfur jet fuel and do not set sulfur limits for jet fuel that is not designated as motor vehicle diesel fuel. This would be…
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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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If a terminal imports off-spec kerosene (higher than 15 ppm), terminal operators are planning to blend the kerosene with diesel fuel so that the ultimate diesel fuel leaving the terminal gate and entering into commerce meets the 15 ppm standard.
See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . The regulations at § 80.525(d) state that kerosene that a kerosene blender adds, or intends to add, to motor vehicle diesel fuel subject to the 15 ppm sulfur standard must meet the 15 ppm sulfur standard. Section 80.521(b)…
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Section 80.600(a)(10) says, Any refiner or importer shall maintain copies of all product transfer documents required under §80.590. If all information required in paragraph (a)(6) of this section is on the product transfer document for a batch, then the
See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . Section 80.600(a)(10) first requires that product transfer documents under § 80.590 be maintained by refiners and importers. It then states that if such product transfer documents contain all the information required under paragraph (a)(6) of § 80.600 for…
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How will waste from the Further Remedial Elements project (Silver Bow Creek Corridor) areas be handled?
Each Further Remedial Element project area has its own specific requirements regarding waste. For example, at Northside Tailings and Diggings East, all materials within the project area that exceed the Waste Identification Criteria will be disposed of offsite in a repository. At Buffalo Gulch all materials below the basin(s) that…
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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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