Tribal Minor NSR Registration Source Emissions Calculators
On June 10, 2011, the EPA finalized the Federal Indian Country Minor New Source Review (NSR) rule to protect air quality in Indian country. Under this rule, existing “true” minor sources needed to register their sources with the EPA by March 1, 2013. The EPA has maintained the registration system and the following source emissions calculators past the original March 1, 2013 registration deadline for sources that might have failed to register on time or to update the source emissions estimates when changes at the source do not trigger the minor NSR air permitting requirements. A source owner should contact the respective EPA Regional Office (i.e., permitting authority) to determine if this registration process applies to the source.
Please note:
- Source owners can use their own emissions data to estimate their registration facility emissions instead of using the emissions calculators shown below for common source categories.
- Registering an air pollution source does not relieve the source owner of the requirement to obtain an air quality permit if applicable.
- If construction or modification of a source is subject to the Tribal NSR rule, the owner or operator of the source can use its emissions information from the permit application form to fulfill the 2011 rule's registration requirement.
- For the Indian reservations in Idaho, Oregon, and Washington State subject to the Federal Air Rules for Reservations (FARR) registration requirement under 40 CFR 49.138, the data being collected under the FARR was and is used to fulfill the Tribal Minor NSR rule registration requirements.
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Source Category |
Emission Calculator | Description |
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Gas stations |
Private or public facilities where gasoline is dispensed into vehicle fuel tanks. |
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Dry cleaning operations |
Dry cleaning operations which commonly use petroleum solvents as cleaning fluids in commercial and industrial dry cleaning operations. |
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Auto body shops |
Repair, repaint, and customize cars, trucks, and other vehicles. Activities include sanding, cleaning, priming and painting. |
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Sawmills |
Sawmills take harvested logs and process them into lumber suitable for construction or the creation of other wood products. |
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Landfill operations |
Landfill operations which receive household waste and are not classified as a land application unit, surface impoundment, injection well, or waste pile. In addition to household waste, the landfill operations may receive other types of waste such as commercial solid waste, nonhazardous sludge, and industrial solid waste. |
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Hot-mix asphalt plants |
Hot-mix asphalt plants that mix and heat a combination of aggregate, recycled materials, and liquid cement to product asphalt suitable for paving applications. |
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Concrete batch plants |
Concrete batch plants, which are designed to dispense water, cement, sand, coarse aggregate, and other supplements in a proportion that can be mixed to create concrete. The mixing processes at these plants can be either truck mixes or central mixes. |
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Printing operations |
Printing operations which include the application of ink onto packaging, greeting cards, books, catalogues, directories, newspapers, etc., using web offset lithography, web letterpress, rotogravure, or flexography processes. |
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Rock crushing and stone processing operations |
Rock crushing and stone processing operations, including sand and gravel production, which extract useful rocks and minerals and crush them to a desired size and consistency. |
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Surface coating operations |
Surface coating operations that involve applying a thin layer of coating (e.g., paint, lacquer, enamel, varnish, etc.) to a substrate (e.g., paper, metal, plastic) for decorative or protective purposes. |
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Degreasers/solvents/cleaners |
Degreasers, solvents or cleaners which are used to remove water-insoluble contaminants such as grease, oils, waxes, carbon deposits, fluxes, and tars from metal, plastic, glass, and other surfaces. Degreasers, solvents and cleaners are typically used prior to painting, plating, inspection, repair, assembly, heat treating, and machining. |
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Industrial boilers |
Industrial boilers that are typically used to generate hot water or steam needed to power other processes, such as electricity generation. Some industries use boilers in a method known as cogeneration, where steam from the boilers will power one process, such as a turbine, after which excess steam and heat will be used for process or energy recycling. Boilers create steam from the combustion of fuel, usually coal, oil, or natural gas, though a wide variety of fuels can be used. |
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| Stationary internal combustion engines | Stationary Internal Combustion Engines (xlsx) | Stationary internal combustion engines which include two ignition methods (spark ignition and compression ignition). Spark ignition engines burn gasoline or natural gas, which have a relatively high ignition temperature and require an electrical discharge to initiate combustion. Compression ignition engines burn diesel fuel, which has a relatively low ignition temperature and can spontaneously ignite since the compressed air temperature is above the auto-ignition temperature of the fuel. |