Page 1 of 110

A B C D E F



## WAC 173-401-532 Categorically **exempt insignificant emission units. WAC 173-401-533 Units and activities**  **defined as insignificant on the basis of size or production rate.**  **Virginia, 9 VAC 5 Chapter 80 Permits for stationary sources, 9 VAC 5-80-11**  **Wisconson Administrative Code NR 406.04 Direct sources exempt from Construction Permit requirements** 

**General Exemptions**

(2) Mobile transport tanks on vehicles, except for those containing asphalt. (5) Pressurized storage of oxygen, nitrogen, carbon dioxide, air, or inert gases.

(6) Storage of solid material, dust-free handling.

(a) Maintenance/construction: (7) Vehicle exhaust from auto maintenance and repair shops. (i) Cleaning and sweeping of streets and paved surfaces; (ii) Concrete application, and installation; (9) Vents from rooms, buildings and enclosures that contain permitted emissions units or activities from which local ventilation, controls and separate exhaust are provided.

(iii) Dredging wet spoils handling and placement; (10) Internal combustion engines for propelling or powering a vehicle.

(iv) Paving application and maintenance. This provision does not exempt asphalt plants from this chapter; 

# Ap**pendix E: Comparison of emission units and rates exempt from permitting in Washington,some other states, and the EPA Tribal NSR rule.** 

**WAC 173-400(4) de minimis emission units** Page 2 of 110

A B C D E F 

## WAC 173-401-532 Categorically **exempt insignificant emission units. WAC 173-401-533 Units and activities**  **defined as insignificant on the basis of size or production rate.**  **Virginia, 9 VAC 5 Chapter 80 Permits for stationary sources, 9 VAC 5-80-11**  **Wisconson Administrative Code NR 406.04 Direct sources exempt from Construction Permit requirements**  **WAC 173-400(4) de minimis emission units** 

(v) Plant maintenance and upkeep

activities (grounds keeping, general repairs, house keeping, plant painting, welding, cutting, brazing, soldering, plumbing, retarring roofs, etc.); (43) Lawn and landscaping activities. (i) Welding using not more than one ton per day of welding rod.

(33) Plant upkeep including routine housekeeping, preparation for and painting of structures or equipment, retarring roofs, applying insulation to buildings in accordance with applicable environmental and health and safety requirements and paving or stripping parking lots.

(vi) Plumbing installation, plumbing protective coating application and maintenance activities;Page 3 of 110

A B C D E F 

## WAC 173-401-532 Categorically **exempt insignificant emission units. WAC 173-401-533 Units and activities**  **defined as insignificant on the basis of size or production rate.**  **Virginia, 9 VAC 5 Chapter 80 Permits for stationary sources, 9 VAC 5-80-11**  **Wisconson Administrative Code NR 406.04 Direct sources exempt from Construction Permit requirements**  **WAC 173-400(4) de minimis emission units** 

(vii) Roofing application and

maintenance;

(viii) Insulation application and maintenance; (ix) Janitorial services and consumer use of janitorial products; (35) Cleaning and sweeping of streets and paved surfaces.

(x) Construction activities that do not result in new or modified stationary sources or portable stationary sources. (74) Repair and maintenance activities, not involving installation of an emission unit and not increasing potential emissions of a regulated air pollutant.

(67) Structural changes not having air contaminant emissions.

(b) Storage tanks: Any storage or transfer operation involving petroleum liquids and other volatile organic compounds with a vapor pressure less than 1.5 pounds per square inch absolute under actual storage conditions or, in the case of loading or processing, under actual loading or processing conditions; and any operation specified below:

(i) Lubricating oil storage tanks. This provision does not exempt wholesale distributors of lubricating oils from this chapter; (3) Lubricating oil storage tanks.

(ii) Polymer tanks and storage devices and associated pumping and handling equipment, used for solids dewatering and flocculation; (117) Polymer tanks and storage devices and associated pumping and handling equipment, used for solids dewatering and flocculation.Page 4 of 110

A B C D E F 

## WAC 173-401-532 Categorically **exempt insignificant emission units. WAC 173-401-533 Units and activities**  **defined as insignificant on the basis of size or production rate.**  **Virginia, 9 VAC 5 Chapter 80 Permits for stationary sources, 9 VAC 5-80-11**  **Wisconson Administrative Code NR 406.04 Direct sources exempt from Construction Permit requirements**  **WAC 173-400(4) de minimis emission units** 

(iii) Storage tanks, reservoirs, pumping

and handling equipment of any size containing soaps, vegetable oil, grease, animal fat, and nonvolatile aqueous salt solutions; (4) Storage tanks, reservoirs and pumping and handling equipment of any size, limited to soaps, lubricants, hydraulic fluid, vegetable oil, grease, animal fat, aqueous salt solutions or other materials and processes using appropriate lids and covers where there is no generation of objectionable odor or airborne particulate matter.

(iv) Process and white water storage tanks; (94) Process water and white water storage tanks. (v) Operation, loading and unloading of storage tanks and storage vessels, with lids or other appropriate closure and less than 260-gallon capacity (35 cubic feet); (a) Operation, loading and unloading of storage tanks and storage vessels, with lids or other appropriate closure and less than two hundred sixty gallon capacity (35 cft), heated only to the minimum extent to avoid solidification if
necessary. Volatile organic compound storage operations. Any tank of 40,000 gallons or less storage capacity. VOC storage tanks with a combined total tankage capacityof not more than 10,000 gallons of volatile organic compounds.

(vi) Operation, loading and unloading of storage tanks,≤ 1100 gallon capacity, with lids or other appropriate closure, not for use with materials containing toxic air pollutants, as listed in chapter 173-460 WAC, max. VP 550 mm mercury at 21°C; (b) Operation, loading and unloading of storage tanks, not greater than one thousand one hundred gallon capacity, with lids or other appropriate closure, not for use with hazardous air pollutants (HAPs), maximum (max.) vp 550mm Hg. Storage tanks containing organic compounds with a true vapor pressure in pounds per square inch absolute at 70°F of less than 1.52 with a combined total tankage capacity of not more than 40,000 gallons.

(vii) Operation, loading and unloading storage of butane, propane, or liquefied petroleum gas with a vessel capacity less than 40,000 gallons; (d) Operation, loading and unloading storage of butane, propane, or liquified petroleum gas (LPG), storage tanks, vessel capacity under forty thousand gallons. Volatile organic compound transfer operations. (1) Any tank of 2,000 gallons or less storage capacity. (2) Any operation outside the volatile organic compound emissions control areas designated in 9 VAC 5-20-206.

(viii) Tanks, vessels and pumping equipment, with lids or other appropriate closure for storage or dispensing of aqueous solutions of inorganic salts, bases and acids. (s) Tanks, vessels, and pumping equipment, with lids or other appropriate closure for storage or dispensing of aqueous solutions of inorganic salts, bases and acids excluding: (i) 99% or greater H2SO4 or H3PO4; (ii) 70% or greater HNO3; (iii) 30% or greater HCl; (iv) More than one liquid phase where the top phase is more than one percent VOCs.Page 5 of 110

A B C D E F 

## WAC 173-401-532 Categorically **exempt insignificant emission units. WAC 173-401-533 Units and activities**  **defined as insignificant on the basis of size or production rate.**  **Virginia, 9 VAC 5 Chapter 80 Permits for stationary sources, 9 VAC 5-80-11**  **Wisconson Administrative Code NR 406.04 Direct sources exempt from Construction Permit requirements**  **WAC 173-400(4) de minimis emission units** 

(c) Operation, loading and unloading of VOC storage tanks (including gasoline storage tanks), ten thousand gallons capacity or less, with lids or other appropriate closure, vp not greater than 80mm Hg at 21°C. Petroleum liquid storage and transfer operations. Any storage or transfer operation involving petroleum liquids with a vapor pressure less than 1.5 pounds per square inch absolute under actual storage conditions or, in the case of loading or processing, under actual loading or processing conditions (kerosene and fuel oil used for household heating have vapor pressures of less than 1.5 pounds per square inch absolute under actual storage conditions; therefore, kerosene and fuel oil are not subject to the provisions of 9 VAC 5-80-10 when used or stored at ambient temperatures); and any operation pecified below: a. Bulk terminals ) gasoline bulk loading operations. Any operation outside volatile organic compound emissions control areas designated in 9 VAC 5-20-206. b. Gasoline dispensing facilities. Any gasoline dispensing facility. c. Bulk plants ) gasoline bulk loading operations. (1) Any facility with an expected daily throughput of less than 4,000 gallons. (2) Any operation outside volatile organic compound emissions control areas designated in 9 VAC 5-20-206.

(t) Equipment used exclusively to pump, load, unload or store high boiling organic material, material with initial boiling point (IBP) not less than 150°C. or vapor pressure (vp) not more than 5mm Hg at 21°C. with lids or other appropriate closure. Petroleum liquid storage operations. (1) Any tank of 40,000 gallons or less storage capacity. (2) Any tank of less than 420,000 gallons storage capacity for crude oil or condensate stored, processed or treated at a drilling and production facility prior to custody transfer. (3) Any tank storing waxy, heavy pour crude oil. One or more external combustion furnaces at a source which will not burn any hazardous waste identified under ch. NR 661, or which have been issued a license or licenses under ch. NR 670, and if no individual furnace is designed to burn the following fuels at more than the maximum rates indicated: (i)≤ 500,000 Btu/hr using coal with ≤ 0.5% sulfur or other solid fuels with≤ 0.5% sulfur; (f) Combustion source, less than five hundred thousand Btu/hr., using any commercial fuel containing less than 0.4% by weight sulfur for coal or less than 1% by weight sulfur for other fuels. Any unit using solid fuel with a maximum heat input of less than 1,000,000 Btu per hour. Coal, coke or other solid fuels, except wood, at a heat input rate of not more than 1.0 million Btu per hour.

(ii)≤ 500,000 Btu/hr using used oil, per the requirements of RCW 70.94.610; (h) Combustion source, not greater than five hundred thousand Btu/hr. if burning used oil and not greater than four hundred thousand Btu/hr. if burning waste wood or waste paper.

(iii)≤ 400,000 Btu/hr using wood waste
or paper; Wood alone or wood in combination with gaseous or liquid fossil fuels at a heat input rate of not more than 5.0 million Btu per hour.

(iv)≤ 1,000,000 Btu/hr using gasoline, kerosene, #1, or #2 fuel oil and with≤0.05% sulfur; (g) Combustion source, of less than one million Btu/hr. if using kerosene, No. 1 or No. 2 fuel oil. Any unit using liquid fuel with a maximum heat input of less than 10,000,000 Btu per hour. Any unit using liquid and gaseous fuel with a maximum heat input of less than 10,000,000 Btu per hour. Distillate oil at a heat input rate of not more than 10 million Btu per hour. (c) New or modified emission units with combined aggregate heat inputs to combustion units (excluding emergency engines exempted by subsection (4)(h)(xxxix) of this section), less than or equal to all of the following, as applicable:Page 6 of 110

A B C D E F 

## WAC 173-401-532 Categorically **exempt insignificant emission units. WAC 173-401-533 Units and activities**  **defined as insignificant on the basis of size or production rate.**  **Virginia, 9 VAC 5 Chapter 80 Permits for stationary sources, 9 VAC 5-80-11**  **Wisconson Administrative Code NR 406.04 Direct sources exempt from Construction Permit requirements**  **WAC 173-400(4) de minimis emission units** 

(v)≤ 4,000,000 Btu/hr using natural gas,

propane, or LPG. (e) Combustion source less than five million Btu/hr. exclusively using natural gas, butane, propane and/or LPG. Any unit using gaseous fuel with a maximum heat input of less than 50,000,000 Btu per hour, unless subject to a new source performance standard in Article 5 (9 VAC 5-50-400 et seq.) of 9 VAC 5 Chapter 50. Gaseous fossil fuel at a heat input rate of not more than 25 million Btu per hour.

(r) Space heaters and hot water heaters using natural gas, propane or kerosene and generating less than five million Btu/hr. Residual or crude oil at a heat input rate of not more than 5.0 million Btu per hour.

Equipment which is designed to incinerate solid wastes, which are not pathological wastes, infectious wastes, municipal wastes or hazardous wastes under ch. NR 661, at a rate of not more than 500 pounds per hour.

(d) Material handling:

(i) Continuous digester chip feeders; (92) Continuous digester chip feeders.

(ii) Grain elevators not licensed as warehouses or dealers by either the Washington state department of agriculture or the U.S. Department of Agriculture;

(iii) Storage and handling of water based lubricants for metal working where organic content of the lubricant is≤ 10%; (aa) Storage and handling of water based lubricants for metal working where the organic content of the lubricant is less than ten percent.

(iv) Equipment used exclusively to pump, load, unload, or store high boiling point organic material in tanks less than one million gallon, material with initial atmospheric boiling point not less than 150°C or vapor pressure not more than 5 mm mercury at 21°C, with lids or other appropriate closure. Grain storage facilities; including facilities with rack dryers designed to dry grain at a rate of not more than 1,500 bushels per hour at 5% moisture extraction, or rack dryers equipped with at least 50 mesh screens, or column dryers; with an average tonnage of grain received of less than 5500 tons per month and which are not subject to s. NR 440.47. The average monthly tonnage of grain received shall be calculated by dividing the cumulative tonnage of grain received since January 1 of each year by 12. The average monthly tonnage of grain received does not include product that the facility sells, acting as a broker, which is never actually received or dried at the grain storage facility.Page 7 of 110

A B C D E F 

## WAC 173-401-532 Categorically **exempt insignificant emission units. WAC 173-401-533 Units and activities**  **defined as insignificant on the basis of size or production rate.**  **Virginia, 9 VAC 5 Chapter 80 Permits for stationary sources, 9 VAC 5-80-11**  **Wisconson Administrative Code NR 406.04 Direct sources exempt from Construction Permit requirements**  **WAC 173-400(4) de minimis emission units** 

Grain processing facilities; including facilities with rack dryers designed to dry grain at a rate of not more than 1,500 bushels per hour at 5% moisture extraction, or rack dryers equipped with at least 50 mesh screens, or column dryers; with an average tonnage of grain received of less than 4500 tons per month and which are not subject to s. NR 440.47. The average monthly tonnage of grain received shall be calculated by dividing the cumulative tonnage of grain received since January 1 of each year by 12. The average monthly tonnage of grain received does not include product that the facility receives that is packaged when received and remains packaged.

(e) Water treatment:

(i) Septic sewer systems, not including active wastewater treatment facilities;

(ii) NPDES permitted ponds and lagoons used solely for the purpose of settling suspended solids and skimming of oil and
grease; (iii) De-aeration (oxygen scavenging) of water where toxic air pollutants as defined in chapter 173-460 WAC are not emitted; (61) Demineralization and oxygen scavenging (deaeration) of water.

(iv) Process water filtration system and demineralizer vents; (v) Sewer manholes, junction boxes, sumps and lift stations associated with wastewater treatment systems; (120) Sewer manholes, junction boxes, sumps and lift stations associated with wastewater treatment systems.

(vi) Demineralizer tanks; (95) Demineralizer tanks. (vii) Alum tanks; (97) Alum tanks. (viii) Clean water condensate tanks. (96) Clean condensate tanks. (p) Municipal and industrial water chlorination facilities of not greater than twenty million gallons per day capacity. The exemption does not apply to
waste water treatment. Facilities for chlorination of municipal drinking water, the intake of once through industrial process or cooling water, or water for swimming pools, spas or other recreational establishments.

(bb) Municipal and industrial waste water chlorination facilities of not greater than one million gallons per day capacity. (f) Environmental chambers and laboratory equipment:

(i) Environmental chambers and humidity chambers using only gases that are not toxic air pollutants listed in chapter 173-460 WAC; (85) Environmental chambers not using hazardous air pollutant (HAPs) gasses.

(ii) Gas cabinets using only gases that are not toxic air pollutants regulated under chapter 173-460 WAC; (65) Gas cabinets using only gasses that are not regulated air pollutants.

(iii) Installation or modification of a single laboratory fume hood; (47) Natural draft hoods, natural draft stacks, or natural draft ventilators for sanitary and storm drains, safety valves, and storage tanks subject to size and service limitations expressed elsewhere in this section.Page 8 of 110

A B C D E F 

## WAC 173-401-532 Categorically **exempt insignificant emission units. WAC 173-401-533 Units and activities**  **defined as insignificant on the basis of size or production rate.**  **Virginia, 9 VAC 5 Chapter 80 Permits for stationary sources, 9 VAC 5-80-11**  **Wisconson Administrative Code NR 406.04 Direct sources exempt from Construction Permit requirements**  **WAC 173-400(4) de minimis emission units** 

(iv) Laboratory research,

experimentation, analysis and testing at sources whose primary purpose and activity is research or education. To be exempt, these sources must not engage in the production of products, or in providing commercial services, for sale or exchange for commercial profit except in a de minimis manner. Pilot-plants or pilot scale processes at these sources are not exempt.

A laboratory which emits volatile organic compounds, sulfur dioxide, carbon monoxide, nitrogen oxides or particulate matter or a combination thereof at a rate of less than 5.7 pounds per hour unless the emissions of any single hazardous air pollutant listed under section 112 (b) of the Act equal or exceed 10 tons per year or the cumulative emissions of hazardous air pollutants listed under section 112 (b) of the Act equal or exceed 25 tons per year. Hourly emissions shall be determined, based on the quantitative estimate of air contaminants before they enter any emission control devices, by dividing the total uncontrolled emissions which would have occurred during a calendar month by the total hours of operation of the laboratory during that calendar month. A laboratory is in operation if laboratory apparatus or equipment is in use

(v) Laboratory calibration and maintenance equipment. (g) Monitoring/quality assurance/testing:

(i) Equipment and instrumentation used for quality control/assurance or inspection
purpose; (22) Inspection equipment for metal products.

(ii) Hydraulic and hydrostatic testing equipment; (76) Hydraulic and hydrostatic testing equipment. (iii) Sample gathering, preparation and management; (iv) Vents from emission monitors and other analyzers. (8) Vents from continuous emissions monitors and other analyzers.

(h) Miscellaneous:

(i) Single-family residences and duplexes;Page 9 of 110

A B C D E F 

## WAC 173-401-532 Categorically **exempt insignificant emission units. WAC 173-401-533 Units and activities**  **defined as insignificant on the basis of size or production rate.**  **Virginia, 9 VAC 5 Chapter 80 Permits for stationary sources, 9 VAC 5-80-11**  **Wisconson Administrative Code NR 406.04 Direct sources exempt from Construction Permit requirements**  **WAC 173-400(4) de minimis emission units** 

(ii) Plastic pipe welding; (29) Plastic pipe welding.

(iii) Primary agricultural production activities including soil preparation, planting, fertilizing, weed and pest control, and harvesting;

(iv) Comfort air conditioning; (46) Comfort air conditioning or air cooling systems, not used to remove air contaminants from specific equipment.

(v) Flares used to indicate danger to the public; (44) Flares used to indicate danger to the public.

(vi) Natural and forced air vents and stacks for bathroom/toilet activities; (48) Natural and forced air vents and stacks for bathroom/toilet facilities.

(vii) Personal care activities; (50) Personal care activities. Dry cleaning plants. Any petroleum dry cleaning plant with a total manufacturers' rated solvent dryer capacity less than 84 pounds as determined by the applicable new source performance standard in 9 VAC 5-
50-410. Perchloroethylene dry cleaning area sources as defined in s. NR 468.20 (2) (am).

(viii) Recreational fireplaces including the use of barbecues, campfires, and ceremonial fires; (11) Recreational fireplaces including the use of barbecues, campfires and ceremonial fires.

(ix) Tobacco smoking rooms and areas;

(x) Noncommercial smokehouses; (u) Smokehouses under twenty square feet.

(xi) Blacksmith forges for single forges;Page 10 of 110

A B C D E F 

## WAC 173-401-532 Categorically **exempt insignificant emission units. WAC 173-401-533 Units and activities**  **defined as insignificant on the basis of size or production rate.**  **Virginia, 9 VAC 5 Chapter 80 Permits for stationary sources, 9 VAC 5-80-11**  **Wisconson Administrative Code NR 406.04 Direct sources exempt from Construction Permit requirements**  **WAC 173-400(4) de minimis emission units** 

(xii) Vehicle maintenance activities, not

including vehicle surface coating;

(xiii) Vehicle or equipment washing (see (c) of this subsection for threshold for boilers); (xiv) Wax application;

(xv) Oxygen, nitrogen, or rare gas extraction and liquefaction equipment not including internal and external combustion equipment; (xvi) Ozone generators and ozonation equipment; (58) Ozonation equipment.

(xvii) Solar simulators; (84) Solar simulators. (xviii) Ultraviolet curing processes, to the extent that toxic air pollutant gases as defined in chapter 173-460 WAC are not emitted; (xix) Electrical circuit breakers, transformers, or switching equipment installation or operation; (xx) Pulse capacitors; (62) Pulse capacitors. (xxi) Pneumatically operated equipment, including tools and hand held applicator equipment for hot melt adhesives;

(xxii) Fire suppression equipment;

(52) Firefighting and similar safety equipment and equipment used to train firefighters excluding fire drill pits. (xxiii) Recovery boiler blow-down tank; (90) Recovery boiler blow-down tank.

(xxiv) Screw press vents;Page 11 of 110

A B C D E F 

## WAC 173-401-532 Categorically **exempt insignificant emission units. WAC 173-401-533 Units and activities**  **defined as insignificant on the basis of size or production rate.**  **Virginia, 9 VAC 5 Chapter 80 Permits for stationary sources, 9 VAC 5-80-11**  **Wisconson Administrative Code NR 406.04 Direct sources exempt from Construction Permit requirements**  **WAC 173-400(4) de minimis emission units** 

(xxv) Drop hammers or hydraulic presses

for forging or metal working; (18) Drop hammers or hydraulic presses for forging or metalworking.

(xxvi) Production of foundry sand molds, unheated and using binders less than 0.25% free phenol by sand weight; (j) Foundry sand molds, unheated and using binders with less than 0.25% free phenol by sand weight.

(xxvii) Kraft lime mud storage tanks and process vessels; (93) Weak liquor and filter tanks.

(xxviii) Lime grits washers, filters and handling; (104) Lime grits washers, filters and handling.

(xxix) Lime mud filtrate tanks; (99) Lime mud filtrate tank.

(xxx) Lime mud water; (101) Lime mud water.

(xxxi) Stock cleaning and pressurized pulp washing down process of the brown stock washer; (102) Lime mud filter. (98) Broke beaters, repulpers, pulp and repulping tanks, stock chests and pulp handling.

(103) Liquor clarifiers and storage tanks and associated pumping, piping and handling.

(100) Hydrogen peroxide tanks.

(xxxii) Natural gas pressure regulator vents, excluding venting at oil and gas production facilities and transportation marketing facilities;Page 12 of 110

A B C D E F 

## WAC 173-401-532 Categorically **exempt insignificant emission units. WAC 173-401-533 Units and activities**  **defined as insignificant on the basis of size or production rate.**  **Virginia, 9 VAC 5 Chapter 80 Permits for stationary sources, 9 VAC 5-80-11**  **Wisconson Administrative Code NR 406.04 Direct sources exempt from Construction Permit requirements**  **WAC 173-400(4) de minimis emission units** 

(xxxiii) Solvent cleaners less than 10

square feet air-vapor interface with solvent vapor pressure not more than 30 mm mercury at 21°C where no toxic air pollutants as listed under chapter 173-460 WAC are emitted; Any solvent metal cleaning operation with an uncontrolled emission rate of not more than seven tons per year, 40 pounds per day and eight pounds per hour. Batch cold cleaning equipment which does not use halogenated HAP solvent and has a total air to solvent interface of 1.0 square meters or less during operation.

Batch cold cleaning equipment which uses halogenated HAP solvent and meets both of the following requirements: 1. The equipment has a total air to solvent interface of 1.0 square meters or less during operation. 2. The equipment is not a major source or located at a major source, as defined in s. NR 460.02 (24).

Batch open top vapor degreasing equipment which does not use halogenated HAP solvent and has a total air to vapor interface of 1.0 square meters or less during operation. Batch open top vapor degreasing equipment which uses halogenated HAP solvent and meets both of the following requirements: 1. The equipment has a total air to solvent interface of 1.0 square meters or less during operation. 2. The equipment is not a major source or located at a major source, as defined in s. NR 460.02 (24).

Conveyorized non−vapor degreasing and conveyorized vapor degreasing equipment which uses halogenated HAP solvent and is not a major source or located at a major source, as defined in s. NR 460.02 (24).

(xxxiv) Surface coating, aqueous solution or suspension containing≤ 1% (by weight) VOCs, or≤ 1% (by weight) toxic air pollutants as listed in chapter 173-460 WAC; Large appliance coating application systems. Any coating application system if it is within a plant that has an uncontrolled emission rate of not more than seven tons per year, 40 pounds per day and eight pounds per hour. Magnet wire coating application systems. Any coating application system if it is within a plant that has an uncontrolled emission rate of not more than seven tons per year, 40 pounds per day and eight pounds per hour. Automobile and light duty truck coating application systems. a. Any coating application system if it is within a plant that has an uncontrolled emission rate of not more than seven tons per year, 40 pounds per day and eight pounds per hour. b. Any vehicle refinishing operation. Painting or coating operations, including associated cleancleaning operations, which emit or will emit not more than 1666 pounds of volatile organic compounds per month, which are asured prior to entering any emission control devices, unless the emissions of any single hazardous air pollutant listed under section 112 (b) of the Act (42 USC 7412(b)) equal or exceed 10 tons per year or the cumulative emissions of hazardous air pollutants listed under section 112 (b) of the Act equal or exceed 25 tons per year.Page 13 of 110

A B C D E F 

## WAC 173-401-532 Categorically **exempt insignificant emission units. WAC 173-401-533 Units and activities**  **defined as insignificant on the basis of size or production rate.**  **Virginia, 9 VAC 5 Chapter 80 Permits for stationary sources, 9 VAC 5-80-11**  **Wisconson Administrative Code NR 406.04 Direct sources exempt from Construction Permit requirements**  **WAC 173-400(4) de minimis emission units** 

(xxxv) Cleaning and stripping activities

and equipment using solutions having≤ 1% VOCs (by weight) or≤ 1% (by weight) toxic air pollutants. Acid solutions used on metallic substances are not exempt;

(xxxvi) Dip coating operations, using materials less than 1% VOCs (by weight) or ≤ 1% (by weight) toxic air pollutants as listed in chapter 173-460 WAC.

(xxxvii) Abrasive blasting performed inside a booth or hangar designed to capture the blast grit or overspray.

(xxxviii) For structures or items too large to be reasonably handled indoors, abrasive blasting performed outdoors that employs control measures such as curtailment during windy periods and enclosure of the area being blasted with tarps and uses either steel shot or an abrasive containing less than one percent (by mass) which would pass through a No. 200 sieve.

(xxxix) Stationary emergency internal combustion engines with an aggregate brake horsepower that is less than or equal to 500 brake horsepower. (n) Combustion turbines, of less than 500 HP. Emergency electric generators powered by internal combustion engines which are fueled by gaseous fuels, gasoline or distillate fuel oil with an electrical output of less than 3,000 kilowatts.Page 14 of 110

A B C D E F 

## WAC 173-401-532 Categorically **exempt insignificant emission units. WAC 173-401-533 Units and activities**  **defined as insignificant on the basis of size or production rate.**  **Virginia, 9 VAC 5 Chapter 80 Permits for stationary sources, 9 VAC 5-80-11**  **Wisconson Administrative Code NR 406.04 Direct sources exempt from Construction Permit requirements**  **WAC 173-400(4) de minimis emission units** 

(xl) Gasoline dispensing facilities with

annual gasoline throughputs less than those specified in WAC 173-491-040 (4)(a). Gasoline dispensing facilities subject to chapter 173-491 WAC are exempt from toxic air pollutant analysis pursuant to chapter 173-460 WAC. Gasoline dispensing facilities which dispense gasoline or other petroleum products.

**These are not included in 173-400-110(4)**

(13) Atmospheric generators used in connection with metal heat treating processes. (3) The following units or activities may be determined to be insignificant on a case-by-case basis by the permitting authority: Portland concrete batch plants which produce or will produce less than 20,000 cubic yards of concrete per month averaged over any 12 consecutive month period.

(14) Metal finishing or cleaning using tumblers. (a) Pilot plants. Wood product manufacturing plants. Any addition of, relocation of or change to a woodworking machine within a plant provided the system air movement capacity, expressed as the cubic feet per minute of air, and maximum control efficiency of the control system are not decreased. Automobile refinishing operations, including associated cleaning operations, which emit or will emit not more than 1666 pounds of volatile organic compounds per month, which are measured prior to entering any emission control devices, unless the emissions of any single hazardous air pollutant listed under section 112(b) of the Act (42 USC 7412(b)) equal or exceed 10 tons per year or the cumulative emissions of hazardous air pollutants listed under section 112(b) of the Act equal or exceed 25 tons
per year.Page 15 of 110

A B C D E F 

## WAC 173-401-532 Categorically **exempt insignificant emission units. WAC 173-401-533 Units and activities**  **defined as insignificant on the basis of size or production rate.**  **Virginia, 9 VAC 5 Chapter 80 Permits for stationary sources, 9 VAC 5-80-11**  **Wisconson Administrative Code NR 406.04 Direct sources exempt from Construction Permit requirements**  **WAC 173-400(4) de minimis emission units** 

(17) Metal or glass heat-treating, in absence of molten materials, oils, or VOCs. (b) Cold feed aggregate bins for asphalt and concrete production equipment. Wood sawmills. Any wood sawmill. Graphic arts operations, including associated cleaning operations, which emit or will emit not more than 1666 pounds of volatile organic compounds per month, which are measured prior to entering any emission control devices, unless the emissions of any single hazardous air pollutant listed under section 112 (b) of the Act equal or exceed 10 tons per year or the cumulative emissions of hazardous air pollutants listed under section 112 (b) of the Act equal or exceed 25 tons
per year.

(19) Electrolytic deposition, used to deposit brass, bronze, copper, iron, tin, zinc, precious and other metals not listed as the parents of HAPs. (c) Chemical or physical analytical laboratory operations or equipment including fume hoods and vacuum pumps. Equipment used or to be used for the purpose of testing or research provided that all of the following requirements are met: 1. A complete application for exemption is made describing the proposed testing or research and including an operating schedule and the types and quantities of emissions anticipated. 2. The department determines that the equipment to be used and the anticipated emissions from the testing or research will not present a significant hazard to public health, safety or welfare or to the environment and approves the application for exemption. 3. The equipment will be in operation for less than 12 months. 4. The department approves the application for exemption submitted under subd. 1. The department shall approve or deny the application in writing within 45 days of receiving a complete application. The department may provide public notice of an application for research and testing exemption, may provide an opportunity for public comment and an opportunity to request a public hearing and may hold a public hearing on any application under this paragraph. The department shall make all nonconfidential information available to the public upon request.Page 16 of 110

A B C D E F 

## WAC 173-401-532 Categorically **exempt insignificant emission units. WAC 173-401-533 Units and activities**  **defined as insignificant on the basis of size or production rate.**  **Virginia, 9 VAC 5 Chapter 80 Permits for stationary sources, 9 VAC 5-80-11**  **Wisconson Administrative Code NR 406.04 Direct sources exempt from Construction Permit requirements**  **WAC 173-400(4) de minimis emission units** 

(15) Metal casting molds and molten metal crucibles that do not contain potential HAPs. (d) NPDES permitted ponds and lagoons utilized solely for the purpose of settling suspended solids and skimming of oil and grease. Equipment whose primary purpose is to transport or sort paper.

(20) Metal fume vapors from electrically heated foundry/forge operations wherein the components of the metal do not generate HAPs or HAP precursors. Electric arc furnaces are excluded from consideration for listing as insignificant. (e) Coffee roasters, under fifteen lbs./day of coffee. (m) The following procedures for the remediation or disposal of soil or water contaminated with organic compounds, provided the potential to emit, considering emission control devices, for any hazardous air contaminant listed in Table A to Table C of s. NR 445.07 is not greater than the emission rate listed in Table A to Table C of s. NR 445.07 for the air contaminant at the respective stack height, and the procedure is not subject to any standard or regulation under section 111 or 112 of the Act (42 USC 7411 or 7412): Numerous additionla criteria listed in rule.Page 17 of 110

A B C D E F 

## WAC 173-401-532 Categorically **exempt insignificant emission units. WAC 173-401-533 Units and activities**  **defined as insignificant on the basis of size or production rate.**  **Virginia, 9 VAC 5 Chapter 80 Permits for stationary sources, 9 VAC 5-80-11**  **Wisconson Administrative Code NR 406.04 Direct sources exempt from Construction Permit requirements**  **WAC 173-400(4) de minimis emission units** 

(16) Die casting. (f) Tire buffing of less than six thousand six hundred tires per year. Renovation or demolition operations involving regulated asbestos−containing material provided that the provisions of subd. 1. or 2.
are met: 1. The amount of regulated asbestos−containing material is less than 260 linear feet on pipes or 160 square feet on other facility components. 2. If the amount of regulated asbestos−containing material is at least 260 linear feet on pipes or at least 160 square feet on other facility components, all of the following conditions are met: a. Notice of intention is provided under s. NR 447.07. b. The notice indicates that the project will meet all applicable requirements of ch. NR 447. c. The fee required under s. NR 410.05 (2) and (3) is submitted with the notice.

(21) Metal melting and molten metal holding equipment and operations wherein the components of the metal do not generate HAPs or HAP precursors. Electric arc furnaces are not considered for listing as insignificant. (k) "Parylene" coaters using less than five hundred gallons of coating per year. Private alcohol fuel production systems as defined in s .289.44 (1) (c), Stats.Page 18 of 110

A B C D E F 

## WAC 173-401-532 Categorically **exempt insignificant emission units. WAC 173-401-533 Units and activities**  **defined as insignificant on the basis of size or production rate.**  **Virginia, 9 VAC 5 Chapter 80 Permits for stationary sources, 9 VAC 5-80-11**  **Wisconson Administrative Code NR 406.04 Direct sources exempt from Construction Permit requirements**  **WAC 173-400(4) de minimis emission units** 

(12) Brazing, soldering and welding equipment and oxygen-hydrogen cutting torches for use in cutting metal where in components of the metal do not generate HAPs or HAPs precursors. (l) Printing and silkscreening, using less than two gallon/day of any combination of the following: Inks, coatings, adhesives, fountain solutions, thinners, retarders, or nonaqueous cleaning solutions.

(23) Plastic and resin curing equipment, excluding FRP. (m) Water cooling towers and ponds, not using chromium-based corrosion inhibitors, not used with barometric jets or condensers, not greater than ten thousand gpm, not in direct contact with gaseous or liquid process streams containing regulated air pollutants. Chromium electroplating area sources and chromium anodizing area sources as defined in s. NR 460.02 (5).Page 19 of 110

A B C D E F 

## WAC 173-401-532 Categorically **exempt insignificant emission units. WAC 173-401-533 Units and activities**  **defined as insignificant on the basis of size or production rate.**  **Virginia, 9 VAC 5 Chapter 80 Permits for stationary sources, 9 VAC 5-80-11**  **Wisconson Administrative Code NR 406.04 Direct sources exempt from Construction Permit requirements**  **WAC 173-400(4) de minimis emission units** 

(24) Extrusion equipment, metals, minerals, plastics, grain or wood. (o) Batch solvent distillation, not greater than fifty-five gallons batch capacity. Crematories.

(25) Presses and vacuum forming, for curing rubber and plastic products or for laminating plastics. (q) Surface coating, using less than two gallons per day. Indirect malt dryers which are designed to burn fuels specified in par. (a) at a heat input rate less than the rates specified in par. (a).

(87) Steam vents and safety relief valves. (v) Milling and grinding activities, using pasteform compounds with less than one percent
VOCs. Bulk gasoline plants which distribute gasoline or other petroleum products.Page 20 of 110

A B C D E F 

## WAC 173-401-532 Categorically **exempt insignificant emission units. WAC 173-401-533 Units and activities**  **defined as insignificant on the basis of size or production rate.**  **Virginia, 9 VAC 5 Chapter 80 Permits for stationary sources, 9 VAC 5-80-11**  **Wisconson Administrative Code NR 406.04 Direct sources exempt from Construction Permit requirements**  **WAC 173-400(4) de minimis emission units** 

(26) Roller mills and calendars, rubber and plastics. (w) Rolling, forging, drawing, stamping, shearing, or spinning hot or cold metals. (x) Any quarry, mine or other facility where nonmetallic minerals re extracted that is not a ledge rock quarry or industrial sand mine. (y) Ledge rock quarries with actual production of less than 25,000 tons per month on a rolling 12 month average, or with actual operation of less than 365 days per 5 year period. (z) Industrial sand mines with actual production of less than 2,000 tons per month on a rolling 12 month average.

(27) Conveying and storage of plastic pellets. (x) Dip-coating operations, using materials with less than one percent VOCs. Fixed sand and gravel plants and fixed crushed stone plants with capacities of 25 tons per hour or less. (28) Plastic compression, injection, and transfer molding and extrusion, rotocasting, pultrusion, blowmolding, excluding acrylics, PVC, polystyrene and related copolymers and the use of plasticizer. Only oxygen, carbon dioxide, nitrogen, air, or inert gas allowed as blowing agents. (y) Surface coating, aqueous solution or suspension containing less than one percent VOCs. Portable sand and gravel plants and portable crushed stone plants with capacities of 150 tons per hour or less.

(30) Nonmetallic mineral mines and screening plants except for crushing and associated activities that are not subject to 40 C.F.R. Part 60 Subpart 000. Quarrying of silica rock and associated activities are not considered for listing as insignificant. (z) Cleaning and stripping activities and equipment, using solutions having less than one percent VOCs by weight. On metallic substrates, acid solutions are not considered for listing as insignificant.

(31) Wet sand and gravel screening. (32) Wax application. (34) Agricultural activities on a facility's property that are not subject to registration or new source review by the permitting authority.

(36) Ultraviolet curing processes. (37) Hot melt adhesive application with no VOCs in the adhesive formulation. (38) Laundering, dryers, extractors, tumblers for fabrics, using water solutions of bleach and/or detergents. (39) Steam cleaning operations. (40) Steam sterilizers. (41) Food preparing for human consumption including cafeterias, kitchen facilities and barbecues located at a source for providing food service on the premises. (42) Portable drums and totes. (45) General vehicle maintenance including vehicle exhaust from repair facilities. Any unit that powers a mobile source but is removed for maintenance or repair and testing.

(49) Office activities. Can coating application systems. Any coating application system if it is within a plant that has an uncontrolled emission rate of not more than seven tons per year, 40 pounds per day and eight pounds per hour.

(51) Sampling connections used exclusively to withdraw materials for laboratory analyses and testing. Metal coil coating application systems. Any coating application system if it is within a plant that has an uncontrolled emission rate of not more than seven tons per year, 40 pounds per day and eight pounds per hour.Page 21 of 110

A B C D E F 

## WAC 173-401-532 Categorically **exempt insignificant emission units. WAC 173-401-533 Units and activities**  **defined as insignificant on the basis of size or production rate.**  **Virginia, 9 VAC 5 Chapter 80 Permits for stationary sources, 9 VAC 5-80-11**  **Wisconson Administrative Code NR 406.04 Direct sources exempt from Construction Permit requirements**  **WAC 173-400(4) de minimis emission units** 

(53) Materials and equipment used by, and activity related to operation of infirmary; infirmary is not the source's business activity. Paper and fabric coating application system. Any coating application system if it is within a plant that has an uncontrolled emission rate of not more than seven tons per year, 40 pounds per day and eight pounds per hour. (54) Fuel and exhaust emissions from vehicles in parking lots. Vinyl coating application systems. Any coating application system if it is within a plant that has an uncontrolled emission rate of not more than seven tons per year, 40 pounds per day and eight pounds per hour.

(55) Carving, cutting, routing, turning, drilling, machining, sawing, surface grinding, sanding, planing, buffing, shot blasting, shot peening, sintering or polishing: Ceramics, glass, leather, metals, plastics, rubber, concrete, paper stock or wood provided that: Metal furniture coating application systems. Any coating application system if it is within a plant that has an uncontrolled emission rate of not more than seven tons per year, 40 pounds per day and eight pounds per hour.

(a) Activity is performed indoors; Miscellaneous metal parts and products coating application systems. a. Any coating application system if it is within a plant that has an uncontrolled emission rate of not more than seven tons per year, 40 pounds per day and eight pounds per hour. b. Any vehicle customizing coating operation, if production is less than 20 vehicles per day. c. Any vehicle refinishing operation. d. Any fully assembled aircraft or marine vessel exterior coating operation.

(b) Particulate emission control in the immediate vicinity of the activity; Flatwood paneling coating application systems. Any coating application system if it is within in a plant that has an uncontrolled emission rate of not more than seven tons per year, 40 pounds per day and eight pounds per hour. (c) Exhaust from the particulate control is within the building housing the activity; Graphic arts (printing processes). Any printing process if it is within a plant that has an uncontrolled emission rate of not more than seven tons per year, 40 pounds per day and eight pounds per hour.

(d) No fugitive particulate emissions enter the environment. (91) Salt cake mix tanks. (56) Oxygen, nitrogen, or rare gas extraction and liquefaction equipment subject to other exemption limitation, e.g., internal and external combustion equipment.

(57) Slaughterhouse equipment except rendering cookers. (59) Nonasbestos brake shoe bonding. (60) Batch loading and unloading of solid phase catalysts. (63) Laser trimmers, using dust collection to prevent fugitive emissions. (64) Plasma etcher, using dust collection to prevent fugitive emissions and using only oxygen, nitrogen, carbon dioxide, or inert gas.

(66) CO2lasers, used only on metals and other materials which do not emit HAPs in the process.

(68) Confection cooking equipment. (69) Mixing, packaging, storage and handling activities of any size, limited to soaps, lubricants, vegetable oil, grease, animal fat, aqueous salt solutions.Page 22 of 110

A B C D E F 

## WAC 173-401-532 Categorically **exempt insignificant emission units. WAC 173-401-533 Units and activities**  **defined as insignificant on the basis of size or production rate.**  **Virginia, 9 VAC 5 Chapter 80 Permits for stationary sources, 9 VAC 5-80-11**  **Wisconson Administrative Code NR 406.04 Direct sources exempt from Construction Permit requirements**  **WAC 173-400(4) de minimis emission units** 

(70) Photographic process equipment by which an image is reproduced upon material sensitized to radiant energy, e.g., blueprint activity, photocopiers, mimeograph, telefax, photographic developing, and microfiche.

(71) Pharmaceutical and cosmetics packaging equipment. (72) Paper trimmers/binders. (73) Sample gathering, preparation and management. (75) Handling equipment and associated activities for glass and aluminum which is destined for recycling, not the re-refining process itself.

(77) Batteries and battery charging. (78) Porcelain and vitreous enameling equipment. (79) Solid waste (as defined in the Washington Administrative Code) containers.

(80) Salt baths using nonvolatile salts and not used in operations which result in air emissions.

(81) Shock chambers. (82) Wire strippers. (83) Humidity chambers. (86) Totally enclosed conveyors. (88) Air compressors, pneumatically operated equipment, systems and hand tools.

(89) Steam leaks. (105) Lime silos and feed bins. (106) Paper forming. (107) Dryers (Yankee, after dryer, curing systems and coolings systems). (108) Vacuum systems exhausts. (109) Starch cooking. (110) Stock cleaning and pressurized pulp washing. (111) Winders. (112) Chipping. (113) Debarking. (114) Sludge dewatering and handling. (115) Screw press vents. (116) Pond dredging. (118) NonPCB oil filled circuit breakers, oil filled transformers and other equipment that is analogous to, but not considered to be, a tank.

(119) Electric or steam-heated drying ovens and autoclaves. (121) Water cooling towers processing exclusively noncontact cooling water.Page 23 of 110

A B

(a) Maintenance/construction:

(i) Cleaning and sweeping of streets and paved surfaces; (ii) Concrete application, and installation;

(iii) Dredging wet spoils handling and placement;

(iv) Paving application and maintenance. This provision does not exempt asphalt plants from this chapter; 

# Ap**pendix E: Comparison of emission units and rates exempt from permitting in Washington,some other states, and the EPA Tribal NSR rule.** 

**WAC 173-400(4) de minimis emission units**  G H I



## West Virginia, Title 45 Series 13, Table 45-13B See **defintion 2.6 "de minimis source" for criteria and treatment of these sources**  **NewYork , Subpart 201-3: Exempt and Trivial Activities Arkansas, Chapter Minor New Source Review, Reg.**  **19.408 Exemption from Permitting**

(A) Insignificant Activities Stationary sources and activities listed in Appendix A of this regulation shall be considered to be insignificant and will not require a permit under this chapter or be included in a source's permit.

AppendixA, groups A and B

B71 Maintenance dredging of pulp and paper mill surface impoundments and ditches containing cellulosic and cellulosic derived biosolids and inorganic materials such as lime, ash, or sand.

3.3(12) The use of products such as antifreeze and fuel additives for the purpose of maintaining motor vehicles.Page 24 of 110

A B 

## WAC 173-400(4) de minimis emission **units**

(v) Plant maintenance and upkeep

activities (grounds keeping, general repairs, house keeping, plant painting, welding, cutting, brazing, soldering, plumbing, retarring roofs, etc.);

(vi) Plumbing installation, plumbing protective coating application and maintenance activities; G H I 

## West Virginia, Title 45 Series 13, Table 45-13B See **defintion 2.6 "de minimis source" for criteria and treatment of these sources**  **NewYork , Subpart 201-3: Exempt and Trivial Activities Arkansas, Chapter Minor New Source Review, Reg.**  **19.408 Exemption from Permitting**

10. Portable brazing, soldering, gas cutting or welding equipment used as an auxiliary to the principal equipment at the source. 39. On-site plant maintenance and upkeep activities, including, lawn care, weed control, pest control, general repairs, cleaning, painting, surface coating,welding, plumbing, grinding, cutting, woodworking, janitorial activities, retarring roofs, installing insulation, and paving parking lots, provided that these activities are not conducted as part of a manufacturing process and are not related to the source’s primary business activity; provided further, that for cleaning, surface coating and painting activities, the source is not subject to VOC or HAP control requirements and the source minimizes the generation of fugitive emissions of any regulated air pollutants; and provided further, that the source complies with the asbestos requirements in 45CSR15. 3.3(45) The following activities are considered trivial when they occur strictly for maintenance or construction activities: plastic pipe welding, soldering, brazing, cutting torches, janitorial activities, steam cleaning, water washing, acid and caustic washing activities, miscellaneous use of solvents, adhesives and caulking, miscellaneous sandblasting, non-asbestos insulation removal, application of refractory and insulation, the periodic use of air for clean-up, and, the process of demolition and rebricking boilers, smelters, furnaces and kilns (this does not include the subsequent operation of such equipment), the surface coating of equipment and buildings as is related to maintenance and construction, and activities which occur for maintenance of grounds such as lawn care, weed control and pest control. 3.3(36) Road and lot paving and striping operations. A7. Welding or cutting equipment related to manufacturing activities that do not result in aggregate emissions of HAPS in excess of 0.1 tpy. B13. Maintenance of grounds or buildings, including: lawn care, weed control, pest control, and water washing activities. B14. Repair, up-keep, maintenance, or construction activities not related to the sources' primary business activity, and not otherwise triggering a permit modification. This may include, but is not limited to such activities asgeneral repairs, cleaning, painting, welding, woodworking, plumbing, retarring roofs, installing insulation, paved/paving parking lots, miscellaneous solvent use, application of refractory, or insulation, brazing, soldering, the use of adhesives, grinding, and cutting2 B15 Surface-coating equipment during miscellaneous maintenance and construction activities. This activity specifically does not include any facility whose primary business activity is surface-coating or includes surface-coating or products.

40. Commercial and residential maintenance and upkeep activities occurring at a building, residence or other structure, including lawn care, weed control, pest control, general repairs, cleaning, painting, surface coating, welding, plumbing, grinding, cutting, woodworking, janitorial activities, re-tarring roofs, installing insulation, and paving parking lots, provided that these activities are not conducted as part of a manufacturing process; provided further, that for cleaning, surface coating and painting activities, the source is not subject to VOC or HAP control requirements and the source minimizes the generation of fugitive emissions of any regulated air pollutants; and provided further, that the source complies with the asbestos requirements in 45CSR15.Page 25 of 110

A B 

## WAC 173-400(4) de minimis emission **units**

(vii) Roofing application and

maintenance;

(viii) Insulation application and maintenance; (ix) Janitorial services and consumer use of janitorial products;

(x) Construction activities that do not result in new or modified stationary sources or portable stationary sources.

(b) Storage tanks:

(i) Lubricating oil storage tanks. This provision does not exempt wholesale distributors of lubricating oils from this chapter; (ii) Polymer tanks and storage devices and associated pumping and handling equipment, used for solids dewatering and flocculation; G H I 

## West Virginia, Title 45 Series 13, Table 45-13B See **defintion 2.6 "de minimis source" for criteria and treatment of these sources**  **NewYork , Subpart 201-3: Exempt and Trivial Activities Arkansas, Chapter Minor New Source Review, Reg.**  **19.408 Exemption from Permitting**

B14. Repair, up-keep, maintenance, or construction activities not related to the sources' primary business activity, and not otherwise triggering a permit modification. This may include, but is not limited to such activities as general repairs, cleaning, painting, welding, woodworking, plumbing, re-tarring roofs, installing insulation, paved/paving parking lots, miscellaneous solvent use, application of refractory, or insulation, brazing, soldering, the use of adhesives, grinding, and cutting2

3.3(3) Vacuum cleaning systems used exclusively for office type areas at industrial facilities, or commercial or residential housekeeping. B6. Janitorial services and consumer use of janitorial products

3.3(46) Excavation for new construction.Page 26 of 110

A B 

## WAC 173-400(4) de minimis emission **units**

(iii) Storage tanks, reservoirs, pumping

and handling equipment of any size containing soaps, vegetable oil, grease, animal fat, and nonvolatile aqueous salt solutions;

(iv) Process and white water storage tanks; (v) Operation, loading and unloading of storage tanks and storage vessels, with lids or other appropriate closure and less than 260-gallon capacity (35 cubic feet);

(vi) Operation, loading and unloading of storage tanks,≤ 1100 gallon capacity, with lids or other appropriate closure, not for use with materials containing toxic air pollutants, as listed in chapter 173-460 WAC, max. VP 550 mm mercury at 21°C;

(vii) Operation, loading and unloading storage of butane, propane, or liquefied petroleum gas with a vessel capacity less than 40,000 gallons;

(viii) Tanks, vessels and pumping equipment, with lids or other appropriate closure for storage or dispensing of aqueous solutions of inorganic salts, bases and acids. G H I 

## West Virginia, Title 45 Series 13, Table 45-13B See **defintion 2.6 "de minimis source" for criteria and treatment of these sources**  **NewYork , Subpart 201-3: Exempt and Trivial Activities Arkansas, Chapter Minor New Source Review, Reg.**  **19.408 Exemption from Permitting**

49. Storage tanks, reservoirs and pumping and handling equipment of any size containing soaps, vegetable oil, animal grease or fat and aqueous salt solutions, provided appropriate lids and covers are utilized, excluding rendering plants. 50. Storage tanks, vessels and containers holding or storing liquid substances that will not emit any regulated air pollutant. A4. Caustic storage tanks that contain no VOCs. B21 Storage tanks, vessels, and containers holding or storing liquid substances that do not contain any VOCs or HAPS.~ B22 Storage tanks, reservoirs, and pumping and handling equipment of any size containing soaps, vegetable oil, grease, animal fat, and no volatile aqueous salt solutions, provided appropriate lids and covers are used and appropriate odor control is achieved.

3.3(44) Storage vessels, tanks and containers with a capacity of less than 750 gallons. A2. Storage tanks less than or equal to 250 gallons storing organic liquids having a true vapor pressure less than or equal to 3.5 psia, provided that the aggregate pollutant specific emissions from all such liquid storage tanks listed as insignificant do not exceed 5 tpy of any combination of HAPs and 10 tpy of any other pollutant.

58. Storage vessels having less than 10,567 gallons capacity containing petroleum or organic liquids with a vapor pressure of 1.5 psia or less at storage temperature, provided that the emissions from all such organic liquid storage tanks, in the aggregate, are less than 2 tons per year for hazardous air pollutants or VOCs. 3.2(25) Storage tanks, with capacities under 10,000 gallons, except those subject to either Part 229 or Part 233 of this Title. A3. Storage tanks less than or equal to 10,000 gallons storing organic liquids having a true vapor pressure less than or equal to 0.5 psia, provided that the aggregate pollutant specific emissions from all such liquid storage tanks listed as insignificant do not exceed 5 tpy of any combination of HAPS and 10 tpy of any other pollutant.

3.2(22) Pressurized fixed roof tanks which are capable of maintaining a working pressure at all times to prevent emissions of volatile organic compound to the outdoor atmosphere.Page 27 of 110

A B 

## WAC 173-400(4) de minimis emission **units**

(i)≤ 500,000 Btu/hr using coal with ≤

0.5% sulfur or other solid fuels with≤ 0.5% sulfur;

(ii)≤ 500,000 Btu/hr using used oil, per the requirements of RCW 70.94.610;

(iii)≤ 400,000 Btu/hr using wood waste
or paper;

(iv)≤ 1,000,000 Btu/hr using gasoline, kerosene, #1, or #2 fuel oil and with≤0.05% sulfur; (c) New or modified emission units with combined aggregate heat inputs to combustion units (excluding emergency engines exempted by subsection (4)(h)(xxxix) of this section), less than or equal to all of the following, as applicable: G H I 

## West Virginia, Title 45 Series 13, Table 45-13B See **defintion 2.6 "de minimis source" for criteria and treatment of these sources**  **NewYork , Subpart 201-3: Exempt and Trivial Activities Arkansas, Chapter Minor New Source Review, Reg.**  **19.408 Exemption from Permitting**

3.2(21) Distillate and residual fuel oil storage tanks with storage capacities below 300,000 barrels. 3.2(23) External floating rooftanks which are of welded construction and are equipped with a metallictype shoe primary seal and a secondary seal from the top of the shoe seal to the tank wall. 3.2(24) External floating roof tanks which are used for the storage of a petroleum or volatile organic liquid with a true vapor pressure less than 4.0 psi (27.6 kPa), are of welded construction and are equipped with one of the following: (i) a metallic-type shoe seal; (ii) a liquid-mounted foam seal; (iii) a liquid-mounted liquid-filled type seal; or (iv) equivalent control equipment or device. 3.2(26) Horizontal petroleum storage tanks. A8. Containers of less than or equal to 5 gallons in capacity that do not emit any detectable VOCs or HAPs when closed. This includes filling, blending, or mixing of the contents of such containers by a retailer. A9. Equipment used for surface coating, painting, dipping, or spraying operations, provided the material used contains no more than 0.4 lblgal VOCs, no hexavalent chromium, and no more than 0.1 tpy of all other HAPs.

3.2(1) Stationary or portable combustion installations where the furnace has a maximum rated heat input capacity less than 10 million Btu/hr burning fossil fuels, other than coal, and coal and wood fired stationary combustion units with a maximum heat input less than 1 million Btu/hr. This exemption includes unit space heaters, which burn waste oil as defined in 6NYCRR Subpart 225-2 and generated on-site, alone or in conjunction with used oil generated by a do-it-yourself oil changer as defined in 6 NYCRR Subpart 374-2.

3.2(2) Stationary or portable combustion installations where the furnace has a maximum rated heat input capacity less than 10 million Btu/hr burning fossil fuels other than coal.Page 28 of 110

A B 

## WAC 173-400(4) de minimis emission **units**

(v)≤ 4,000,000 Btu/hr using natural gas,

propane, or LPG.

(d) Material handling:

(i) Continuous digester chip feeders;

(ii) Grain elevators not licensed as warehouses or dealers by either the Washington state department of agriculture or the U.S. Department of Agriculture;

(iii) Storage and handling of water based lubricants for metal working where organic content of the lubricant is≤ 10%;

(iv) Equipment used exclusively to pump, load, unload, or store high boiling point organic material in tanks less than one million gallon, material with initial atmospheric boiling point not less than 150°C or vapor pressure not more than 5 mm mercury at 21°C, with lids or other appropriate closure. G H I 

## West Virginia, Title 45 Series 13, Table 45-13B See **defintion 2.6 "de minimis source" for criteria and treatment of these sources**  **NewYork , Subpart 201-3: Exempt and Trivial Activities Arkansas, Chapter Minor New Source Review, Reg.**  **19.408 Exemption from Permitting**

3.2(2) Stationary or portable combustion installations where the furnace has a maximum rated heat input capacity less than 10 million Btu/hr burning fossil fuels other than coal.

A1. Fuel burning equipment with a design rate less than 10 million BTU per hour, provided that the aggregate pollutant specific emissions from all such units listed as insignificant do not exceed 5 tons per year (tpy) of any combination of HAPs and 10 tpy of any other pollutant.

3.2(8) Feed and grain milling, cleaning, conveying, drying and storage operations including grain storage silos, where such silos exhaust to an appropriate emission control device, excluding grain terminal elevators with permanent storage capacities over 2.5 million U.S. bushels, and grain storage elevators with capacities above one million bushels.

3.3(65) Equipment used to mix and package soaps, vegetable oil, grease, animal fat, and nonvolatile aqueous salt solutions, provided appropriate lids and covers are utilized. B23 Equipment used to mix and package soaps, vegetable oil, grease, animal fat, and nonvolatile aqueous salt solutions, provided appropriate lids and covers are used and appropriate odor control is achieved.Page 29 of 110

A B 

## WAC 173-400(4) de minimis emission **units**

(e) Water treatment:

(i) Septic sewer systems, not including active wastewater treatment facilities;

(ii) NPDES permitted ponds and lagoons used solely for the purpose of settling suspended solids and skimming of oil and
grease; (iii) De-aeration (oxygen scavenging) of water where toxic air pollutants as defined in chapter 173-460 WAC are not emitted;

(iv) Process water filtration system and demineralizer vents; (v) Sewer manholes, junction boxes, sumps and lift stations associated with wastewater treatment systems;

(vi) Demineralizer tanks; (vii) Alum tanks; (viii) Clean water condensate tanks.

(f) Environmental chambers and laboratory equipment:

(i) Environmental chambers and humidity chambers using only gases that are not toxic air pollutants listed in chapter 173-460 WAC; (ii) Gas cabinets using only gases that are not toxic air pollutants regulated under chapter 173-460 WAC; (iii) Installation or modification of a single laboratory fume hood; G H I 

## West Virginia, Title 45 Series 13, Table 45-13B See **defintion 2.6 "de minimis source" for criteria and treatment of these sources**  **NewYork , Subpart 201-3: Exempt and Trivial Activities Arkansas, Chapter Minor New Source Review, Reg.**  **19.408 Exemption from Permitting**

9. Boiler water treatment operations, excluding cooling towers. 38. Oxygen scavenging (de-aeration) of water. B45 Oxygen scavenging (de-aeration) of water. B43 Boiler water treatment operations, not including cooling towers.

42. Process water filtration systems and demineralizers 15. Demineralized water tanks and demineralizer vents. 3.3(90) Process water filtration systems and demineralizers. B41 Process water filtration systems and demineralizers.

15. Demineralized water tanks and demineralizer vents. 3.3(91) Demineralized water tanks and demineralizer vents. B42 Demineralized water tanks and demineralizer vents.

23. Environmental chambers not using hazardous air pollutant gases. 32. Humidity chambers. 3.3(86) Environmental chambers not using hazardous air pollutant gases. B38 Environmental chambers not using hazardous air pollutant gases. B39 Shock chambers, humidity chambers, and solar simulators.

7. Bench-scale laboratory equipment used for physical or chemical analysis, excluding lab fume hoods or vents. 3.2(40) Ventilating and exhaust systems for laboratory operations.Page 30 of 110

A B 

## WAC 173-400(4) de minimis emission **units**

(iv) Laboratory research,

experimentation, analysis and testing at sources whose primary purpose and activity is research or education. To be exempt, these sources must not engage in the production of products, or in providing commercial services, for sale or exchange for commercial profit except in a de minimis manner. Pilot-plants or pilot scale processes at these sources are not exempt.

(v) Laboratory calibration and maintenance equipment. (g) Monitoring/quality assurance/testing:

(i) Equipment and instrumentation used for quality control/assurance or inspection
purpose;

(ii) Hydraulic and hydrostatic testing equipment; (iii) Sample gathering, preparation and management; (iv) Vents from emission monitors and other analyzers.

(h) Miscellaneous:

(i) Single-family residences and duplexes; G H I 

## West Virginia, Title 45 Series 13, Table 45-13B See **defintion 2.6 "de minimis source" for criteria and treatment of these sources**  **NewYork , Subpart 201-3: Exempt and Trivial Activities Arkansas, Chapter Minor New Source Review, Reg.**  **19.408 Exemption from Permitting**

3.3(32) All process emission sources which are located at private, public, or vocational education institutions, where the emissions are the result of teaching and training exercises, and the institution is not engaged in the manufacture of products for commercial sale in commerce, except in a de minimis manner. A10. Non-production equipment approved by the Department, used for waste treatability studies or other pollution prevention programs provided that the emissions are less than 10 tpy of any pollutant regulated under this regulation or less than 2 tpy of a single HAP or 5 tpy of any combination of HAPS. B34 Bench-scale laboratory equipment used for physical or chemical analysis not including lab fume hoods or vents.

8. Routine calibration and maintenance of laboratory equipment or other analytical instruments. B35 Routine calibration and maintenance of laboratory equipment or other analytical instruments.

26. Equipment used for quality control/assurance or inspection purposes, including sampling equipment used to withdraw materials for analysis. A5 Emissions from laboratory equipment/vents used exclusively for routine chemical or physical analysis for quality control or environmental monitoring purposes provided that the aggregate pollutant specific emissions from all such equipment/vents considered insignificant do not exceed 5 tpy of any combination of HAPs and 10 tpy of any other pollutant. B36 Equipment used for quality controllassurance or inspection purposes, including sampling equipment used to withdraw materials for analysis

33. Hydraulic and hydrostatic testing equipment. 3.3(56) Equipment used for hydraulic or hydrostatic testing. B37 Hydraulic and hydrostatic testing equipment.

51. Vents from continuous emissions monitors and other analyzers. 3.3(75) Contaminant detectors, sampling devices and recorders. B26 Vents from continuous emissions monitors and other analyzers.

2. Air contaminant detectors or recorders, combustion controllers or shutoffs.

13. Wood heaters, cookstoves or fireplaces used for heating and/or cooking at residential or publicly-owned facilities. 3.3(2) Any emission source or process constructed or operated at a domestic residence for domestic use.Page 31 of 110

A B 

## WAC 173-400(4) de minimis emission **units**

(ii) Plastic pipe welding;

(iii) Primary agricultural production activities including soil preparation, planting, fertilizing, weed and pest control, and harvesting;

(iv) Comfort air conditioning;

(v) Flares used to indicate danger to the public;

(vi) Natural and forced air vents and stacks for bathroom/toilet activities;

(vii) Personal care activities;

(viii) Recreational fireplaces including the use of barbecues, campfires, and ceremonial fires; (ix) Tobacco smoking rooms and areas;

(x) Noncommercial smokehouses;

(xi) Blacksmith forges for single forges; G H I 

## West Virginia, Title 45 Series 13, Table 45-13B See **defintion 2.6 "de minimis source" for criteria and treatment of these sources**  **NewYork , Subpart 201-3: Exempt and Trivial Activities Arkansas, Chapter Minor New Source Review, Reg.**  **19.408 Exemption from Permitting**

3.3(45) The following activities are considered trivial when they occur strictly for maintenance or construction activities: plastic pipe welding, soldering, brazing, cutting torches, janitorial activities, steam cleaning, water washing, acid and caustic washing activities, miscellaneous use of solvents, adhesives and caulking, miscellaneous sandblasting, non-asbestos insulation removal, application of refractory and insulation, the periodic use of air for clean-up, and, the process of demolition and rebricking boilers, smelters, furnaces and kilns (this does not include the subsequent operation of such equipment), the surface coating of equipment and buildings as is related to maintenance and construction, and activities which occur for maintenance of grounds such as lawn care, weed control and pest control.

3.3(14) Ventilating systems used in buildings to house animals. B75 Agricultural operations, including onsite grain storage, not including IC engines or grain elevators.

14. Comfort air conditioning or ventilation systems not used to remove air contaminants generated by or released from specific units of equipment. 3.3(4) Ventilating systems used exclusively for temperature and humidity control of buildings for the comfort of people living or working within the building except those systems which have applicable requirements under title VI of the act. B2. Air conditioning and heating units used for comfort that do not have applicable requirements under Title VI of the Act. B3. Ventilating units used for human comfort that do not exhaust air pollutants into the ambient air from any manufacturing/industrial or commercial process.

22. Emergency road flares. 29. Single-use flares used solely to indicate danger to the public. 3.3(35) Emergency road flares. B48 Emergency road flares.

4. Bathroom/toilet vent emissions. 3.3(4) Ventilating systems used exclusively for temperature and humidity control of buildings for the comfort of people living or working within the building except those systems which have applicable requirements under title VI of the act 3.3(7) Bathroom/toilet vents. B9. Bathroom/toilet emissions B57 Stacks or vents to prevent escape of sanitary sewer gases through the plumbing traps.

36. Laundry activities, excluding dry-cleaning and steam boilers. 3. Any consumer product used in the same manner as in normal consumers’ use, provided the use results in a duration and frequency of exposure which are not greater than those experienced by consumers and which may include, but not be limited to, personal use items; janitorial cleaning supplies; office supplies; and supplies to maintain copying equipment. 3.3(8) Beauty salons and barber shops. 3.3(9) Laundry dryers, extractors, or tumblers used to clean fabrics with water solutions of bleach and detergents, where the emissions of such operations are controlled by appropriate emission control devices. B8. Laundry activities, except for drycleaning and steam boilers.

3.3(68) Open fires B30 Barbecue equipment or outdoor fireplaces used in connection with any residence or recreation.

5. Tobacco smoking rooms and areas. 3.3(6) Smoking rooms and areas. B11 Tobacco smoking rooms and areas.

3.3(83) Blacksmith forges. B12. Blacksmith forgesPage 32 of 110

A B 

## WAC 173-400(4) de minimis emission **units**

(xii) Vehicle maintenance activities, not

including vehicle surface coating;

(xiii) Vehicle or equipment washing (see (c) of this subsection for threshold for boilers); (xiv) Wax application;

(xv) Oxygen, nitrogen, or rare gas extraction and liquefaction equipment not including internal and external combustion equipment; (xvi) Ozone generators and ozonation equipment; (xvii) Solar simulators; (xviii) Ultraviolet curing processes, to the extent that toxic air pollutant gases as defined in chapter 173-460 WAC are not emitted; (xix) Electrical circuit breakers, transformers, or switching equipment installation or operation; (xx) Pulse capacitors; (xxi) Pneumatically operated equipment, including tools and hand held applicator equipment for hot melt adhesives;

(xxii) Fire suppression equipment;

(xxiii) Recovery boiler blow-down tank;

(xxiv) Screw press vents; G H I 

## West Virginia, Title 45 Series 13, Table 45-13B See **defintion 2.6 "de minimis source" for criteria and treatment of these sources**  **NewYork , Subpart 201-3: Exempt and Trivial Activities Arkansas, Chapter Minor New Source Review, Reg.**  **19.408 Exemption from Permitting**

3.3(10) Engine exhaust emissions and/or refueling emissions generated from mobile and portable powered vehicles and equipment used for the propulsion or operation of passengers and/or freight transportation vehicles, marine vehicles and equipment, construction and off-road vehicles and equipment, farm vehicles and equipment, competition and entertainment vehicles and equipment, and/or any other type of mobile or portable engine powered vehicles or equipment when these vehicles or equipment are operated anywhere outside of an enclosed facility for the purpose of their design and intended use or for compliance assessment with any safety or emission control or inspection programs sanctioned by New York State, the Federal government or any governmental entity empowered to carry out such activities. 3.3(11) Engine exhaust emissions and/or refueling emissions generated from mobile and portable powered vehicles and equipment such as competition and entertainment vehicles and equipment, farm vehicles and equipment, construction and off-road vehicles and equipment, automobiles, motorcycles, trucks, buses, marine vehicles and equipment, small engine powered tools and equipment, or any other type of mobile or portable engine powered vehicles or equipment which are collected and/or vented in any manner through any opening in a facility when these vehicles and equipment are operated in the facility for the purposes of their design and intended use, public safety, comfort or entertainment, facility maintenance, vehicle or equipment repair, adjustment or testing, or compliance assessment with any safety or emission control or inspection programs sanctioned by New York State, the Federal government, or any governmental entity empowered to carry out such activities. 3.3(12) The use of products such as antifreeze and fuel additives for the purpose of maintaining motor vehicles. B56. Use of products for the purpose of maintaining motor vehicles operated by the facility not including air cleaning units of such vehicles (i.e. antifreeze, fuel additives).

57. Ozone generators used in water treatment facilities. 3.3(26) Equipment used exclusively to generate ozone for water treatment
processes. B46 Ozone generators.

Solar simulators. 3.3(89) Solar simulators. B39 Shock chambers, humidity chambers, and solar simulators. 3.2(19) Ultraviolet curing operations.

27. Fire suppression systems. 28. Firefighting equipment and the equipment used to train firefighters and emergency response individuals, which is subject to 45CSR6 and complies with 45CSR15. 3.3(69) Fire training activities. 3.3(70) Fire suppression systems. B47 Fire suppression systems.Page 33 of 110

A B 

## WAC 173-400(4) de minimis emission **units**

(xxv) Drop hammers or hydraulic presses

for forging or metal working;

(xxvi) Production of foundry sand molds, unheated and using binders less than 0.25% free phenol by sand weight;

(xxvii) Kraft lime mud storage tanks and process vessels;

(xxviii) Lime grits washers, filters and handling;

(xxix) Lime mud filtrate tanks;

(xxx) Lime mud water;

(xxxi) Stock cleaning and pressurized pulp washing down process of the brown stock washer;

(xxxii) Natural gas pressure regulator vents, excluding venting at oil and gas production facilities and transportation marketing facilities; G H I 

## West Virginia, Title 45 Series 13, Table 45-13B See **defintion 2.6 "de minimis source" for criteria and treatment of these sources**  **NewYork , Subpart 201-3: Exempt and Trivial Activities Arkansas, Chapter Minor New Source Review, Reg.**  **19.408 Exemption from Permitting**

16. Drop hammers or hydraulic presses for forging or metalworking. 3.3(66) Drop hammers or hydraulic presses for forging or metalworking. B24 Drop hammers or presses for forging or metalworking

19. Foundry sand molding forming equipment, provided no heat is applied and no VOCs or hazardous air pollutants are emitted, but not including the metal pouring process.

B64 Emissions of wet lime from lime mud tanks, lime mud washers, lime mud piles, lime mud filter and filtrate tanks, and lime mud slurry tanks.

B64 Emissions of wet lime from lime mud tanks, lime mud washers, lime mud piles, lime mud filter and filtrate tanks, and lime mud slurry tanks.

B64 Emissions of wet lime from lime mud tanks, lime mud washers, lime mud piles, lime mud filter and filtrate tanks, and lime mud slurry tanks.

B64 Emissions of wet lime from lime mud tanks, lime mud washers, lime mud piles, lime mud filter and filtrate tanks, and lime mud slurry tanks.

37. Natural gas pressure regulator vents, excluding venting at oil and gas production facilities. B27 Natural gas pressure regulator vents, excluding venting at oil and gas production facilities. B76 The following natural gas and oil exploration production site equipment: separators, dehydration units, natural gas fired compressors, and pumping units. This does not include compressors located on natural gas transmission pipelines.Page 34 of 110

A B 

## WAC 173-400(4) de minimis emission **units**

(xxxiii) Solvent cleaners less than 10

square feet air-vapor interface with solvent vapor pressure not more than 30 mm mercury at 21°C where no toxic air pollutants as listed under chapter 173-460 WAC are emitted;

(xxxiv) Surface coating, aqueous solution or suspension containing≤ 1% (by weight) VOCs, or≤ 1% (by weight) toxic air pollutants as listed in chapter 173-460 WAC; G H I 

## West Virginia, Title 45 Series 13, Table 45-13B See **defintion 2.6 "de minimis source" for criteria and treatment of these sources**  **NewYork , Subpart 201-3: Exempt and Trivial Activities Arkansas, Chapter Minor New Source Review, Reg.**  **19.408 Exemption from Permitting**

3.2(39) Solvent metal cleaning processes: (i) Cold cleaning degreasers with an open surface area of 11 square feet or less and an internal volume of 93 gallons or less or, having an organic solvent loss of 3 gallons per day or less. (ii) Cold cleaning degreasers that use a solvent with a VOC content of five percent or less by weight, unless subject to the requirements in 40 CFR 63, subpart T. (iii) Conveyorized degreasers with an air/vapor interface smaller than 22 square feet (2.0 m2), unless subject to the requirements in 40 CFR 63, subpart T. (iv) Open-top vapor degreasers with an open-top area smaller than 11 square feet (1.0 m2), unless subject to the requirements in 40 CFR 63, subpart T. 3.3(47) Degreasing units which exclusively use non-hazardous air pollutant acids. 3.3(48) Degreasing units which exclusively use caustics (e.g., potassium hydroxide and sodium hydroxide). 3.3(49) Remote reservoir parts cleaners whose use of solvent is contained to the immediate cleaning of the part, after which time the solvent is drained through a drain opening, not to exceed 16 square inches, and is returned to a remote reservoir containing the solvent. 3.3(50) Cold cleaning degreasers that use a solvent with a VOC content of five percent or less by weight. 3.3(51) Cold cleaning degreasers with an internal volume less than or equal to two gallons.

3.2(17) Surface coating and related operations which use less than 25 gallons per month of coating materials (paints) and cleaning solvents, combined, subject to the following: (i) the facility is located outside of any severe ozone nonattainment area; and (ii) all abrasive cleaning and surface coating operations are performed in an enclosed building where such operations are exhausted into appropriate emission control devices.Page 35 of 110

A B 

## WAC 173-400(4) de minimis emission **units**

(xxxv) Cleaning and stripping activities

and equipment using solutions having≤ 1% VOCs (by weight) or≤ 1% (by weight) toxic air pollutants. Acid solutions used on metallic substances are not exempt;

(xxxvi) Dip coating operations, using materials less than 1% VOCs (by weight) or ≤ 1% (by weight) toxic air pollutants as listed in chapter 173-460 WAC.

(xxxvii) Abrasive blasting performed inside a booth or hangar designed to capture the blast grit or overspray.

(xxxviii) For structures or items too large to be reasonably handled indoors, abrasive blasting performed outdoors that employs control measures such as curtailment during windy periods and enclosure of the area being blasted with tarps and uses either steel shot or an abrasive containing less than one percent (by mass) which would pass through a No. 200 sieve.

(xxxix) Stationary emergency internal combustion engines with an aggregate brake horsepower that is less than or equal to 500 brake horsepower. G H I 

## West Virginia, Title 45 Series 13, Table 45-13B See **defintion 2.6 "de minimis source" for criteria and treatment of these sources**  **NewYork , Subpart 201-3: Exempt and Trivial Activities Arkansas, Chapter Minor New Source Review, Reg.**  **19.408 Exemption from Permitting**

3.2(18) Abrasive cleaning operations which exhaust to an appropriate emission control device.

21. Emergency electrical generators at residential locations. 3.2(3) Stationary or portable internal combustion engines which meet the following criteria: (i) are diesel or natural gas powered, and located within any severe ozone nonattainment area, and have maximum mechanical power rating of less than 200 brake horsepower; or (ii) are diesel or natural gas powered, and located outside of any severe ozone nonattainment areas, and have maximum mechanical power rating of less than 400 brake horsepower; or (iii)are gasoline powered and have a maximum mechanical power rating of less than 50 brake horsepower. 3.2(4) Stationary or portable internal combustion engines which are temporarily located at a facility for a period not to exceed 30 days per calendar year, where the total combined maximum mechanical power rating for all affected units is less than 1,000 brake horsepower. 3.2(5) Gas turbines with a heat input at peak load less than 10 million Btu per hour. 3.2(6) Emergency power generating stationary internal combustion engines as defined in 200.1(cq) and engine test cells at engine manufacturing facilities that are utilized for research and development, reliability performance testing, or quality assurance performance testing. A12 Emergency use generators, boilers, or other fuel burning equipment that is of equal or smaller capacity than the primary operating unit, cannot be used in conjunction with the primary operating unit, and does not emit or have the potential to emit regulated air pollutants in excess of the primary operating unit and not operated more than 90 days a year. B10. Emergency (backup) electrical generators at residential locations.Page 36 of 110

A B 

## WAC 173-400(4) de minimis emission **units**

(xl) Gasoline dispensing facilities with

annual gasoline throughputs less than those specified in WAC 173-491-040 (4)(a). Gasoline dispensing facilities subject to chapter 173-491 WAC are exempt from toxic air pollutant analysis pursuant to chapter 173-460 WAC. G H I 

## West Virginia, Title 45 Series 13, Table 45-13B See **defintion 2.6 "de minimis source" for criteria and treatment of these sources**  **NewYork , Subpart 201-3: Exempt and Trivial Activities Arkansas, Chapter Minor New Source Review, Reg.**  **19.408 Exemption from Permitting**

3.2(16) Gasoline dispensing sites with an annual throughput less than 120,000 gallons located outside any severe ozone non-attainment areas.

1. Air compressorsandpneumatically-operatedequipment, including hand tools; instrument air systems (excluding fuel-fired compressors); emissions from pneumatic starters on reciprocating engines, turbines or other equipment; and periodic use of air for cleanup (excluding all sandblasting activities). 3.2 sections (9) Equipment used exclusively to slaughter animals, but not including other equipment at slaughterhouses, such as rendering cookers, boilers, heating plants, incinerators, and electrical power generating equipment. (10) Flour silos at bakeries, provided all such silos are exhausted through an appropriate emission control device. (11) Emissions from flavorings added to a food product where such flavors are manually added to the product. (12) Screen printing inks/coatings or adhesives which are applied by a hand-held squeegee. A hand-held squeegee is one that is not propelled through the use of mechanical conveyance and is not an integral part of the screen printing
process. (13) Graphic arts processes at facilities located outside a severe ozone nonattainment area with facility-wide total emissions of volatile organic compounds from ink, coating, adhesive, fountain solution and cleaning solution less than three tons per year on a 12-month rolling basis. (14) Graphic label and/or box labeling operations where the inks are applied by stamping or rolling. (15) Graphic arts processes which are specifically exempted from regulation under Part 234 of this Title, with respect to emissions of volatile organic compounds which are not given an A rating. A6. Non commercial water washing operations of empty drums less than or equal to 55 gallons with less than three percent of the maximum container volume of material. A7. Welding or cutting equipment related to manufacturing activities that do not result in aggregate emissions of HAPS in excess of 0.1 tpy. A11. Operation of groundwater remediation wells, including emissions from the pumps and collection activities provided that the emissions are less than 10 tpy of any pollutant regulated under this regulation or less than 2 tpy of a single HAP or 5 tpy of any combination of HAPs. This does not include emissions from air-stripping or storage. A13. Other activities for which the facility demonstrates that no enforceable permit conditions are necessary to insure compliance with any applicable law or regulation provided that the emissions are less than 5 tpy of any pollutant regulated under this regulation or less than 1 tpy of a single HAP or 2.5 tpy of any combination of HAPs. These emission limits apply to the sum of all activities listed under this group.

6. Batteries and battery charging stations, except at battery manufacturing plants. 3.2(20) Ventilating systems for landfill gases, where the systems are vented directly to the atmosphere, and the ventilating system has been required by, and is operating under, the conditions of a valid Part 360 permit, or order on consent; (27) Storage silos storing solid materials, provided all such silos are exhausted through an appropriate emission control device. (29) all processing equipment at sand and gravel mines or quarries that: (i) are permanent or fixed installations with a maximum rated processing capacity of 25 tons of minerals per hour or less; or (ii) are mobile (portable) installations with a maximum rated processing capacity of 150 tons of minerals per hour or less. (30) Mobile (portable) stone crushers with maximum rated capacities below 150 tons of minerals per hour which are located at non-metallic mineral processing operations. B1. Combustion emissions from propulsion of mobile sources and emissions from refueling these sources unless regulated by Title I1 and required to obtain a permit under Title V of the federal Clean Air Act, as amended. This does not include emissions from any transportable units, such as temporary compressors or boilers. This does not include emissions from loading racks or fueling operations covered under any applicable federal requirements. B4. Non-commercial food preparation or food preparation at restaurants, cafeterias, or caterers, etc. B5. Consumer use of office equipment and products, not including commercial printers or business primarily involved in photographic reproduction. B7. Internal combustion engines used for landscaping purposes.Page 37 of 110

A B 

## WAC 173-400(4) de minimis emission **units** G H I 

## West Virginia, Title 45 Series 13, Table 45-13B See **defintion 2.6 "de minimis source" for criteria and treatment of these sources**  **NewYork , Subpart 201-3: Exempt and Trivial Activities Arkansas, Chapter Minor New Source Review, Reg.**  **19.408 Exemption from Permitting**

11. CO2 lasers, used only in metals and other materials which do not emit any hazardous air pollutants in the process. 3.2(31) Surface coating operations which are specifically exempted from regulation under Part 228 of this Title, with respect to emissions of volatile organic compounds which are not given an A rating. (32) Pharmaceutical tablet branding operations. (33) Thermal packaging operations, including but not limited to, therimage labeling, blister packing, shrink wrapping, shrink banding, and carton gluing; (34) Powder coating operations. (35) All tumblers used for the cleaning and/or deburring of metal products without abrasive blasting. (36) Presses used exclusively for molding or extruding plastics except where halogenated carbon compounds or hydrocarbon solvents are used as foaming agents. (37) Concrete batch plants where the cement weigh hopper and all bulk storage silos are exhausted through fabric filters, and the batch drop point is controlled by a shroud or other emission control device. (38) Cement storage operations where materials are transported by screw or bucket conveyors. B16 Portable electrical generators that can be "moved by hand" from one location to another B17 Hand-held equipment for buffing, polishing, cutting, drilling, sawing, grinding, turning, or machining wood, metal, or plastic. B18 Brazing or soldering equipment related to manufacturing activities that do not result in emission of HAPS. B19 Air compressors and pneumatically operated equipment, including hand tools. B20 Batteries and battery charging stations, except at battery manufacturing plants. B25 Equipment used exclusively to slaughter animals, but not including other equipment at slaughter-houses, such as rendering cookers, boilers, heating plants, incinerators, and electrical power generating equipment.

12. Combustion emissions from propulsion of mobile sources. 3.2(41) Exhaust or ventilating systems for the melting of gold, silver, platinum and other precious metals. (42) Exhaust systems for paint mixing, transfer, filling or sampling and/or paint storage rooms or cabinets, provided the paints stored within these locations are stored in closed containers when not in use. (43) Exhaust systems for solvent transfer, filling or sampling, and/or solvent storage rooms provided the solvent stored within these locations are stored in closed containers when not in use. (44) Research and development activities, including both stand-alone and activities within a major stationary source, until such time as the administrator completes a rule making to determine how the permitting program should be structured for these activities. (45) The application of odor counteractants and/or neutralizers. B28 Hand-held applicator equipment for hot melt adhesives with no VOCs in the adhesive. B29 Lasers used only on metals and other materials which do not emit HAPS in the process. B30 Consumer use of paper trimmers/binders. B31 Electric or steam-heated drying ovens and autoclaves, but not the emissions from the articles or substances being processed in the ovens or autoclaves or the boilers delivering the steam. B32 Salt baths using non-volatile salts that do not result in emissions of any air pollutant covered by this regulation. B33 Laser trimmers using dust collection to prevent fugitive emissions.Page 38 of 110

A B 

## WAC 173-400(4) de minimis emission **units** G H I 

## West Virginia, Title 45 Series 13, Table 45-13B See **defintion 2.6 "de minimis source" for criteria and treatment of these sources**  **NewYork , Subpart 201-3: Exempt and Trivial Activities Arkansas, Chapter Minor New Source Review, Reg.**  **19.408 Exemption from Permitting**

3.3(1) Boiler water treatment operations. (5) Exhaust systems for the storage of portable containers, drums, and bags of chemicals in rooms, buildings and warehouses, subject to the following: B40 Fugitive emissions related to movement of passenger vehicles, provided the emissions are not counted for applicability purposes and any required fugitive dust control plan or its equivalent is submitted. B44 Emissions from storage or use of water treatment chemicals, except for hazardous air pollutants or pollutants listed under regulations promulgated pursuant to Section 112(r) of the Act, for use in cooling towers, drinking water systems, and boiler waterlfeed systems.

17. Equipment used exclusively for pressing, drawing or stamping of metals, excluding emissions due to quenching activities or supporting equipment. **Commercial - Food Service Industries 3.3(15) Emissions from process, exhaust or ventilating systems in bakeries and restaurants which derive**  **over 50 percent of their revenues from retail sales on premises. (16) Non-conveyorized bakery ovens (this includes batch ovens, which are**  **defined as a non-conveyor belt oven operating a single baking cycle in which a determinate amount of product is cooked at one baking).**  **(17) Bakery ovens used exclusively to produce baked goods leavened chemically in the absence of yeast.**  **(18) Process or exhaust or ventilating systems involved in the preparation of food, food blanching or cooking in water.**  **(19) Process, exhaust or ventilating systems or stationary combustion installations exclusively involved in the production of maple syrup.**  B49 Steam vents and safety relief valves. B50 Steam leaks. B51 Steam cleaning operations. B52 Steam and microwave sterilizers. B53 Site assessment work to characterize waste disposal or remediation sites. B54 Miscellaneous additions or upgrades of instrumentation. B55 Emissions from combustion controllers or combustion shutoff devices but not combustion units itself. B58 Emissions from equipment lubricating systems (i.e. oil mist), not including storage tanks, unless otherwise exempt. B59 Residential wood heaters, cookstoves, or fireplaces. B61 Log wetting areas and log flumes. B62 Periodic use of pressurized air for cleanup. B63 Solid waste dumpsters.Page 39 of 110

A B 

## WAC 173-400(4) de minimis emission **units** G H I 

## West Virginia, Title 45 Series 13, Table 45-13B See **defintion 2.6 "de minimis source" for criteria and treatment of these sources**  **NewYork , Subpart 201-3: Exempt and Trivial Activities Arkansas, Chapter Minor New Source Review, Reg.**  **19.408 Exemption from Permitting**

18. Emissions from die-casting machinery, excluding emissions from melt furnaces or other associated processes. **Commercial - Graphic Arts 3.3(20) Lead melting pots used in printing establishments.**  **(21) Blueprint machines. (22) Photocopying, photographic processing or related equipment.**  **(23) Proof press operations. (24) Heat sealing operations which are used to seal and separate**  **polyethylene and polypropylene bags. Commercial - Other**  **(25) Batch process kilns used for firing ceramic ware, subject to the following:**  **(i) the exhaust stream does not contain emissions of fluorides, lead, and/or beryllium; and**  **(ii) the total heat input is less than one million Btu/hr.** B65 Natural gas odoring activities unless the Department determines that emissions constitute air pollution. B66 Emissions from engine crankcase vents. B67 Storage tanks used for the temporary containment of materials resulting from an emergency reporting to an unanticipated release. B68 Equipment used exclusively to mill or grind coatings in roll grinding rebuilding, and molding compounds where all materials charged are in paste form. B69 Mixers, blenders, roll mills, or calendars for rubber or plastic for which no materials in powder form are added and in which no organic solvents, diluents, or thinners are used. B70 The storage, handling, and handling equipment for bark and wood residues not subject to fugitive dispersion offsite (this applies to the equipment only).

20. Electric or steam-heated drying ovens, autoclaves or steam sterilizers, excluding the emissions from the articles or substances being processed in the ovens or autoclaves or the boilers delivering the steam. 3.3(27) Air stripping processes utilized on public drinking water supplies. (28) Air strippers and soil vents used to remediate gasoline spills, where the air stripper or soil vent is located at a State-funded site, or required under the provisions of an order on consent or stipulation agreement, and the operation of the air strippers or soil vents are conducted under the supervision of the department and are properly controlled as required by the department. (29) Air strippers and soil vents required under the provisions of an order on consent or stipulation agreement, or in operation at a superfund site. (30) Air strippers and soil vents operating for test purposes to qualify and quantify air emissions for remediation projects and for a time period acceptable to the regional air pollution control engineer. (31) Emissions from the storage and application of road salt (calcium chloride or sodium chloride).

(33) Emergency relief vents, stacks and ventilating systems except any with the potential to emit vinyl chloride located at a facility where ethylene dichloride, vinyl chloride and/or polyvinyl chloride are produced. (34) Snow plowing, street sweeping, sanding and ashing of streets and roads to abate traffic hazards. B72 Tall oil soap storage, skimming, and loading. B73 Water heaters used strictly for domestic (non-process) purposes. B74 Facility roads and parking areas, unless necessary to control offsite fugitive emissions.Page 40 of 110

A B 

## WAC 173-400(4) de minimis emission **units** G H I 

## West Virginia, Title 45 Series 13, Table 45-13B See **defintion 2.6 "de minimis source" for criteria and treatment of these sources**  **NewYork , Subpart 201-3: Exempt and Trivial Activities Arkansas, Chapter Minor New Source Review, Reg.**  **19.408 Exemption from Permitting**

24. Emissions from food preparation at restaurants and cafeterias. 3.3(36) Road and lot paving and striping operations. (37) Public or private roadways, parking lots. (38) Manhole covers. (39) Sewers. (40) Storm drains and vents. (41) Solid waste dumpsters, including handling equipment and associated activities. (42) Excavation for the repair of underground utility lines such as water, electric, or natural gas. (43) Asbestos demolition and removal work subject to 40 CFR part 61, subpart M and/or 12 NYCRR Part 56. (46) Excavation for new construction.

25. Equipment used exclusively to slaughter animals, excluding other equipment at slaughterhouses, such as rending cookers, boilers, heating plants, incinerators and electrical power generating equipment. 3.3(52) Hand-held or manually operated equipment used for buffing, polishing, carving, cutting, drilling, machining, routing, sanding, sawing, surface grinding or turning ceramic art work, ceramic precision parts, leather, metal parts, plastics, fiberboard, fiberglass, masonry, carbon, glass, graphite, wood or rubber. (53) Manual surface coating/painting processes which exclusively use brushes, rollers, or aerosol cans. (54) Hand-held or manually operated welding, brazing and soldering equipment. (55) Acetylene, butane, and propane torches. (57) Equipment lubricating systems, including metal cutting coolants and oils. (58) Pneumatic starters used to start reciprocating engines, turbines, and other equipment. (59) Instrument air systems, excluding fuel-fired compressors. (60) Air vents from air compressors and pneumatically operated equipment emitting ambient air. (61) Drum washing operations, where such operations are necessary to meet Resource Conservation and Recovery Act (RCRA) standards. (62) Vacuum producing devices where only ambient air and the oil emissions from the vacuum producing mechanism itself are exhausted.Page 41 of 110

A B 

## WAC 173-400(4) de minimis emission **units** G H I 

## West Virginia, Title 45 Series 13, Table 45-13B See **defintion 2.6 "de minimis source" for criteria and treatment of these sources**  **NewYork , Subpart 201-3: Exempt and Trivial Activities Arkansas, Chapter Minor New Source Review, Reg.**  **19.408 Exemption from Permitting**

30. Hand-held applicator equipment for hot melt adhesives with no VOCs or hazardous air pollutants in the adhesive formulation. 31. Hand-held equipment for buffing, polishing, cutting, drilling, sawing,grinding, turning or machining wood, metal or plastic. 3.3(63) Woodworking operations where no surface coating takes place, provided such operations exhaust to a sawdust collection system controlled by an appropriate emission control device. (64) Sawmills, provided all processes are located at least 500 feet from any recreational area, school, or private residence and all residues from debarking, planing, sawing, etc., are contained in such a manner as to minimize fugitive emissions.

34. Mobile internal combustion engines used for landscaping purposes.
35. Laser trimmers using dust collection to prevent fugitive emissions. 3.3(71) Fecal incinerators with a charging rate not exceeding 10 pounds per hour, such as those used on certain vehicles or other special cases. (72) Paint mixing operations located at retail paint, hardware or department stores where the paint is sold in five gallon or smaller containers. (73) Rifle and pistol ranges. (74) Aircraft de-icing operations. (76) Emissions from natural gas odoring activities. (77) Battery charging areas except those located at battery manufacturing plants. (78) Incubators. (79) The venting of compressed natural gas, butane or propane gas cylinders. (80) Coal car thaw-pit burners. (81) Consumer use of office equipment and products, not including printers or businesses primarily involved in photographic reproductions. (82) Consumer use of paper trimmers/binders. (84) Carbon dioxide lasers, used only on metals and other materials which do not emit hazardous air pollutants in the process. (85) Laser trimmers using appropriate emission control devices.

41. Portable electrical generators that can be moved by hand from one location to another. “Moved by hand” means that it can be moved without the assistance of any motorized or nonmotorized vehicle, conveyance or device. 3.3(87) Shock chambers. (92) Steam leaks. (93) Steam vents. (94) Emissions of the following pollutants: water vapor, oxygen, carbon dioxide, nitrogen, inert gases such as argon, helium, neon, krypton and xenon, hydrogen, simple asphyxiants including methane and propane, trace constituents included in raw materials or byproducts, where the constituents are less than 1 percent by weight for any regulated air pollutant, or 0.1 percent by weight for any carcinogen listed by the United States Department of Health and Human Services' Seventh Annual Report on Carcinogens (1994).Page 42 of 110

A B 

## WAC 173-400(4) de minimis emission **units** G H I 

## West Virginia, Title 45 Series 13, Table 45-13B See **defintion 2.6 "de minimis source" for criteria and treatment of these sources**  **NewYork , Subpart 201-3: Exempt and Trivial Activities Arkansas, Chapter Minor New Source Review, Reg.**  **19.408 Exemption from Permitting**

43. Salt baths using nonvolatile salts that do not result in emissions of any regulated air pollutants.

44. Shock chambers.

46. Steam cleaning operations, excluding hazardous air pollutant emissions. 47. Steam leaks. 48. Steam vents and safety relief valves, provided that such valves shall be included in any permit application that may otherwise be required under this rule. 52. Operation of groundwater remediation wells, including emissions from the pumps and collection activities. This does not include emissions from air-stripping treatment or storage. 53. Log wetting areas that are using only water.
54. Log flumes.
55. The storage, handling and handling equipment for bark and wood dust not subject to 45CSR7. 56. Solid waste dumpsters. 59. A source that is not major that emits only nonprocessed fugitive emissions (other than haul roads).Page 43 of 110

A B 

## WAC 173-400(4) de minimis emission **units** G H I 

## West Virginia, Title 45 Series 13, Table 45-13B See **defintion 2.6 "de minimis source" for criteria and treatment of these sources**  **NewYork , Subpart 201-3: Exempt and Trivial Activities Arkansas, Chapter Minor New Source Review, Reg.**  **19.408 Exemption from Permitting**Page 44 of 110

A B 

## WAC 173-400(4) de minimis emission **units** G H I 

## West Virginia, Title 45 Series 13, Table 45-13B See **defintion 2.6 "de minimis source" for criteria and treatment of these sources**  **NewYork , Subpart 201-3: Exempt and Trivial Activities Arkansas, Chapter Minor New Source Review, Reg.**  **19.408 Exemption from Permitting**Page 45 of 110

A B

(a) Maintenance/construction:

(i) Cleaning and sweeping of streets and paved surfaces; (ii) Concrete application, and installation;

(iii) Dredging wet spoils handling and placement;

(iv) Paving application and maintenance. This provision does not exempt asphalt plants from this chapter; 

# Ap**pendix E: Comparison of emission units and rates exempt from permitting in Washington,some other states, and the EPA Tribal NSR rule.** 

**WAC 173-400(4) de minimis emission units**  J K L



## New Mexico TITLE 20 ENVIRONMENTAL PROTECTION **CHAPTER 2 AIR QUALITY (STATEWIDE) PART 72 CONSTRUCTION PERMITS**  **Wyoming Chapter 06 Section 02 Permit requirements for construction, modification, and operation**  **Iowa 22.1(2) (455B) Exemptions**

References to 20.2.72.202, Exemptions Exemptions are in Section 2(k)Page 46 of 110

A B 

## WAC 173-400(4) de minimis emission **units**

(v) Plant maintenance and upkeep

activities (grounds keeping, general repairs, house keeping, plant painting, welding, cutting, brazing, soldering, plumbing, retarring roofs, etc.);

(vi) Plumbing installation, plumbing protective coating application and maintenance activities; J K L 

## New Mexico TITLE 20 ENVIRONMENTAL PROTECTION **CHAPTER 2 AIR QUALITY (STATEWIDE) PART 72 CONSTRUCTION PERMITS**  **Wyoming Chapter 06 Section 02 Permit requirements for construction, modification, and operation**  **Iowa 22.1(2) (455B) Exemptions**

A.(1) Activities which occur strictly for maintenance of grounds or buildings, including: lawn care, pest control, grinding, cutting, welding, painting, woodworking, sweeping, general repairs, janitorial activities, and building roofing operations; A(2) Activities for maintenance of equipment or pollution control equipment, either inside or outside of a building, including cutting, welding, and grinding, but excluding painting; p. Brazing, soldering or welding equipment or portable cutting torches used only for nonproduction activities.Page 47 of 110

A B 

## WAC 173-400(4) de minimis emission **units**

(vii) Roofing application and

maintenance;

(viii) Insulation application and maintenance; (ix) Janitorial services and consumer use of janitorial products;

(x) Construction activities that do not result in new or modified stationary sources or portable stationary sources.

(b) Storage tanks:

(i) Lubricating oil storage tanks. This provision does not exempt wholesale distributors of lubricating oils from this chapter; (ii) Polymer tanks and storage devices and associated pumping and handling equipment, used for solids dewatering and flocculation; J K L 

## New Mexico TITLE 20 ENVIRONMENTAL PROTECTION **CHAPTER 2 AIR QUALITY (STATEWIDE) PART 72 CONSTRUCTION PERMITS**  **Wyoming Chapter 06 Section 02 Permit requirements for construction, modification, and operation**  **Iowa 22.1(2) (455B) Exemptions**

i. Construction, modification or alteration to equipment which will not result in a net emissions increase (as defined in 22.5(1)Af@) of more than 1.0 lb/hr of any regulated air pollutant (as defined in 22.100(455B)). Emission reduction achieved through the installation of control equipment, for which a construction permit has not been

m. Storage tanks with a capacity of less than 19,812 gallons and an annual throughput of less than 200,000 gallons.Page 48 of 110

A B 

## WAC 173-400(4) de minimis emission **units**

(iii) Storage tanks, reservoirs, pumping

and handling equipment of any size containing soaps, vegetable oil, grease, animal fat, and nonvolatile aqueous salt solutions;

(iv) Process and white water storage tanks; (v) Operation, loading and unloading of storage tanks and storage vessels, with lids or other appropriate closure and less than 260-gallon capacity (35 cubic feet);

(vi) Operation, loading and unloading of storage tanks,≤ 1100 gallon capacity, with lids or other appropriate closure, not for use with materials containing toxic air pollutants, as listed in chapter 173-460 WAC, max. VP 550 mm mercury at 21°C;

(vii) Operation, loading and unloading storage of butane, propane, or liquefied petroleum gas with a vessel capacity less than 40,000 gallons;

(viii) Tanks, vessels and pumping equipment, with lids or other appropriate closure for storage or dispensing of aqueous solutions of inorganic salts, bases and acids. J K L 

## New Mexico TITLE 20 ENVIRONMENTAL PROTECTION **CHAPTER 2 AIR QUALITY (STATEWIDE) PART 72 CONSTRUCTION PERMITS**  **Wyoming Chapter 06 Section 02 Permit requirements for construction, modification, and operation**  **Iowa 22.1(2) (455B) Exemptions**

t. Any container, storage tank, or vessel that contains a fluid having a maximum true vapor pressure of less than 0.75 psia. AMaximum true vapor pressure@ means the equilibrium partial pressure of the material considering: $ For material stored at ambient temperature, the maximum monthly average temperature as reported by the National Weather Service,

or $ For material stored above or below the ambient temperature, the temperature equal to the highest calendar-month average of the material storage temperature.Page 49 of 110

A B 

## WAC 173-400(4) de minimis emission **units**

(i)≤ 500,000 Btu/hr using coal with ≤

0.5% sulfur or other solid fuels with≤ 0.5% sulfur;

(ii)≤ 500,000 Btu/hr using used oil, per the requirements of RCW 70.94.610;

(iii)≤ 400,000 Btu/hr using wood waste
or paper;

(iv)≤ 1,000,000 Btu/hr using gasoline, kerosene, #1, or #2 fuel oil and with≤0.05% sulfur; (c) New or modified emission units with combined aggregate heat inputs to combustion units (excluding emergency engines exempted by subsection (4)(h)(xxxix) of this section), less than or equal to all of the following, as applicable: J K L 

## New Mexico TITLE 20 ENVIRONMENTAL PROTECTION **CHAPTER 2 AIR QUALITY (STATEWIDE) PART 72 CONSTRUCTION PERMITS**  **Wyoming Chapter 06 Section 02 Permit requirements for construction, modification, and operation**  **Iowa 22.1(2) (455B) Exemptions**

b. Fuel-burning equipment for indirect heating or cooling with a capacity of less than one million Btu per hour input per combustion unit when burning coal, untreated wood, untreated seeds or pellets, other untreated vegetative materials, or fuel oil. Used oils meeting the specification from 40 CFR 279.11 as amended through May 3, 1993, are acceptable fuels for this exemption.

b. Fuel-burning equipment for indirect heating or cooling with a capacity of less than one million Btu per hour input per combustion unit when burning coal, untreated wood, untreated seeds or pellets, other untreated vegetative materials, or fuel oil. Used oils meeting the specification from 40 CFR 279.11 as amended through May 3, 1993, are acceptable fuels for this exemption.Page 50 of 110

A B 

## WAC 173-400(4) de minimis emission **units**

(v)≤ 4,000,000 Btu/hr using natural gas,

propane, or LPG.

(d) Material handling:

(i) Continuous digester chip feeders;

(ii) Grain elevators not licensed as warehouses or dealers by either the Washington state department of agriculture or the U.S. Department of Agriculture;

(iii) Storage and handling of water based lubricants for metal working where organic content of the lubricant is≤ 10%;

(iv) Equipment used exclusively to pump, load, unload, or store high boiling point organic material in tanks less than one million gallon, material with initial atmospheric boiling point not less than 150°C or vapor pressure not more than 5 mm mercury at 21°C, with lids or other appropriate closure. J K L 

## New Mexico TITLE 20 ENVIRONMENTAL PROTECTION **CHAPTER 2 AIR QUALITY (STATEWIDE) PART 72 CONSTRUCTION PERMITS**  **Wyoming Chapter 06 Section 02 Permit requirements for construction, modification, and operation**  **Iowa 22.1(2) (455B) Exemptions**

**(iii) Fuel burning equipment other than a smokehouse generator which has a heat input of not more than 25 million BTU per hour (6.25 billion gm**  **cal/hr) and burns only gaseous fuel containing not more than 20 grains total sulfur per 100 std. ft3; has a heat input of not more than 10 million**  **BTU/hr (2.5 billion gm-cal/hr) and burns any other fuel.** a. Fuel-burning equipment for indirect heating and reheating furnaces or cooling units using natural gas or liquefied petroleum gas with a capacity of less than ten million Btu per hour input per combustion unit.Page 51 of 110

A B 

## WAC 173-400(4) de minimis emission **units**

(e) Water treatment:

(i) Septic sewer systems, not including active wastewater treatment facilities;

(ii) NPDES permitted ponds and lagoons used solely for the purpose of settling suspended solids and skimming of oil and
grease; (iii) De-aeration (oxygen scavenging) of water where toxic air pollutants as defined in chapter 173-460 WAC are not emitted;

(iv) Process water filtration system and demineralizer vents; (v) Sewer manholes, junction boxes, sumps and lift stations associated with wastewater treatment systems;

(vi) Demineralizer tanks; (vii) Alum tanks; (viii) Clean water condensate tanks.

(f) Environmental chambers and laboratory equipment:

(i) Environmental chambers and humidity chambers using only gases that are not toxic air pollutants listed in chapter 173-460 WAC; (ii) Gas cabinets using only gases that are not toxic air pollutants regulated under chapter 173-460 WAC; (iii) Installation or modification of a single laboratory fume hood; J K L 

## New Mexico TITLE 20 ENVIRONMENTAL PROTECTION **CHAPTER 2 AIR QUALITY (STATEWIDE) PART 72 CONSTRUCTION PERMITS**  **Wyoming Chapter 06 Section 02 Permit requirements for construction, modification, and operation**  **Iowa 22.1(2) (455B) Exemptions**

h. Equipment (other than anaerobic lagoons) or control equipment which emits odors unless such equipment or control equipment also emits particulate matter, or any other regulated air contaminant (as defined in 22.100(455B)).

h. Equipment (other than anaerobic lagoons) or control equipment which emits odors unless such equipment or control equipment also emits particulate matter, or any other regulated air contaminant (as defined in 22.100(455B)).Page 52 of 110

A B 

## WAC 173-400(4) de minimis emission **units**

(iv) Laboratory research,

experimentation, analysis and testing at sources whose primary purpose and activity is research or education. To be exempt, these sources must not engage in the production of products, or in providing commercial services, for sale or exchange for commercial profit except in a de minimis manner. Pilot-plants or pilot scale processes at these sources are not exempt.

(v) Laboratory calibration and maintenance equipment. (g) Monitoring/quality assurance/testing:

(i) Equipment and instrumentation used for quality control/assurance or inspection
purpose;

(ii) Hydraulic and hydrostatic testing equipment; (iii) Sample gathering, preparation and management; (iv) Vents from emission monitors and other analyzers.

(h) Miscellaneous:

(i) Single-family residences and duplexes; J K L 

## New Mexico TITLE 20 ENVIRONMENTAL PROTECTION **CHAPTER 2 AIR QUALITY (STATEWIDE) PART 72 CONSTRUCTION PERMITS**  **Wyoming Chapter 06 Section 02 Permit requirements for construction, modification, and operation**  **Iowa 22.1(2) (455B) Exemptions**

s. Equipment that is not related to the production of goods or services and used exclusively for academic purposes, located at educational institutions (as defined in Iowa Code section 455B.161). The equipment covered under this exemption is limited to: lab hoods, art class equipment, wood shop equipment in classrooms, wood fired pottery kilns, and fuel-burning units with a capacity of less than one million Btu per hour l. The equipment in laboratories used exclusively for nonproduction chemical and physical analyses. Nonproduction analyses means analyses incidental to the production of a good or service and includes analyses conducted for quality assurance or quality control activities, or for the assessment of environmental impact.

**(v)**Laboratory equipment used exclusively for chemical or physical analyses. l. The equipment in laboratories used exclusively for nonproduction chemical and physical analyses. Nonproduction analyses means analyses incidental to the production of a good or service and includes analyses conducted for quality assurance or quality control activities, or for the assessment of environmental impact.

(10) Gases used to calibrate plant instrumentation, including continuous emission monitoring (CEM) systems; **(i)**The installation or alteration of an air pollutant detector, air pollutants recorder, combustion controller, or combustion shutoff.

j. Residential heaters, cookstoves, or fireplaces, which burn untreated wood, untreated seeds or pellets, or other untreated vegetative materials.Page 53 of 110

A B 

## WAC 173-400(4) de minimis emission **units**

(ii) Plastic pipe welding;

(iii) Primary agricultural production activities including soil preparation, planting, fertilizing, weed and pest control, and harvesting;

(iv) Comfort air conditioning;

(v) Flares used to indicate danger to the public;

(vi) Natural and forced air vents and stacks for bathroom/toilet activities;

(vii) Personal care activities;

(viii) Recreational fireplaces including the use of barbecues, campfires, and ceremonial fires; (ix) Tobacco smoking rooms and areas;

(x) Noncommercial smokehouses;

(xi) Blacksmith forges for single forges; J K L 

## New Mexico TITLE 20 ENVIRONMENTAL PROTECTION **CHAPTER 2 AIR QUALITY (STATEWIDE) PART 72 CONSTRUCTION PERMITS**  **Wyoming Chapter 06 Section 02 Permit requirements for construction, modification, and operation**  **Iowa 22.1(2) (455B) Exemptions**

d. Equipment used for cultivating land, harvesting crops, or raising livestock other than anaerobic lagoons. This exemption is not applicable if the equipment is used to remove substances from grain which were applied to the grain by another person. This exemption is also not applicable to equipment used by a person to manufacture commercial feed, as defined in Iowa Code section 198.3, which is normally not fed to livestock, owned by the person or another person, in a feedlot, as defined in Iowa Code section 172D.1, subsection 6, or a confinementbuilding owned or operated by that person and located in this state. **(ii)**Air conditioning or ventilating systems not designed to remove air pollutants generated by or released from equipment. q. Cooling and ventilating equipment: Comfort air conditioning not designed or used to remove air contaminants generated by, or released from, specific units of equipment.

n. Stack or vents to prevent escape of sewer gases through plumbing traps. Systems which include any industrial waste are not exempt.

(9) Residential activities such as use of fireplaces, woodstoves, and barbecue cookers;Page 54 of 110

A B 

## WAC 173-400(4) de minimis emission **units**

(xii) Vehicle maintenance activities, not

including vehicle surface coating;

(xiii) Vehicle or equipment washing (see (c) of this subsection for threshold for boilers); (xiv) Wax application;

(xv) Oxygen, nitrogen, or rare gas extraction and liquefaction equipment not including internal and external combustion equipment; (xvi) Ozone generators and ozonation equipment; (xvii) Solar simulators; (xviii) Ultraviolet curing processes, to the extent that toxic air pollutant gases as defined in chapter 173-460 WAC are not emitted; (xix) Electrical circuit breakers, transformers, or switching equipment installation or operation; (xx) Pulse capacitors; (xxi) Pneumatically operated equipment, including tools and hand held applicator equipment for hot melt adhesives;

(xxii) Fire suppression equipment;

(xxiii) Recovery boiler blow-down tank;

(xxiv) Screw press vents; J K L 

## New Mexico TITLE 20 ENVIRONMENTAL PROTECTION **CHAPTER 2 AIR QUALITY (STATEWIDE) PART 72 CONSTRUCTION PERMITS**  **Wyoming Chapter 06 Section 02 Permit requirements for construction, modification, and operation**  **Iowa 22.1(2) (455B) Exemptions**

(12) Automotive repair shop activities, except painting and use of solvents;

(4) Use of fire fighting equipment and fire fighting training;Page 55 of 110

A B 

## WAC 173-400(4) de minimis emission **units**

(xxv) Drop hammers or hydraulic presses

for forging or metal working;

(xxvi) Production of foundry sand molds, unheated and using binders less than 0.25% free phenol by sand weight;

(xxvii) Kraft lime mud storage tanks and process vessels;

(xxviii) Lime grits washers, filters and handling;

(xxix) Lime mud filtrate tanks;

(xxx) Lime mud water;

(xxxi) Stock cleaning and pressurized pulp washing down process of the brown stock washer;

(xxxii) Natural gas pressure regulator vents, excluding venting at oil and gas production facilities and transportation marketing facilities; J K L 

## New Mexico TITLE 20 ENVIRONMENTAL PROTECTION **CHAPTER 2 AIR QUALITY (STATEWIDE) PART 72 CONSTRUCTION PERMITS**  **Wyoming Chapter 06 Section 02 Permit requirements for construction, modification, and operation**  **Iowa 22.1(2) (455B) Exemptions**Page 56 of 110

A B 

## WAC 173-400(4) de minimis emission **units**

(xxxiii) Solvent cleaners less than 10

square feet air-vapor interface with solvent vapor pressure not more than 30 mm mercury at 21°C where no toxic air pollutants as listed under chapter 173-460 WAC are emitted;

(xxxiv) Surface coating, aqueous solution or suspension containing≤ 1% (by weight) VOCs, or≤ 1% (by weight) toxic air pollutants as listed in chapter 173-460 WAC; J K L 

## New Mexico TITLE 20 ENVIRONMENTAL PROTECTION **CHAPTER 2 AIR QUALITY (STATEWIDE) PART 72 CONSTRUCTION PERMITS**  **Wyoming Chapter 06 Section 02 Permit requirements for construction, modification, and operation**  **Iowa 22.1(2) (455B) Exemptions**Page 57 of 110

A B 

## WAC 173-400(4) de minimis emission **units**

(xxxv) Cleaning and stripping activities

and equipment using solutions having≤ 1% VOCs (by weight) or≤ 1% (by weight) toxic air pollutants. Acid solutions used on metallic substances are not exempt;

(xxxvi) Dip coating operations, using materials less than 1% VOCs (by weight) or ≤ 1% (by weight) toxic air pollutants as listed in chapter 173-460 WAC.

(xxxvii) Abrasive blasting performed inside a booth or hangar designed to capture the blast grit or overspray.

(xxxviii) For structures or items too large to be reasonably handled indoors, abrasive blasting performed outdoors that employs control measures such as curtailment during windy periods and enclosure of the area being blasted with tarps and uses either steel shot or an abrasive containing less than one percent (by mass) which would pass through a No. 200 sieve.

(xxxix) Stationary emergency internal combustion engines with an aggregate brake horsepower that is less than or equal to 500 brake horsepower. J K L 

## New Mexico TITLE 20 ENVIRONMENTAL PROTECTION **CHAPTER 2 AIR QUALITY (STATEWIDE) PART 72 CONSTRUCTION PERMITS**  **Wyoming Chapter 06 Section 02 Permit requirements for construction, modification, and operation**  **Iowa 22.1(2) (455B) Exemptions**

r. An internal combustion engine with a brake horsepower rating of less than 400 measured at the shaft, provided that the owner or operator meets all of the conditions in this paragraph. For the purposes of this exemption, the manufacturer=s nameplate rated capacity at full load shall be defined as the brake horsepower output at the shaft. The owner or operator of an engine that was manufactured, ordered, modified or reconstructed after March 18, 2009, may use this exemption only if the owner or operator, prior to installing, modifying or reconstructing the engine, submits to the department a completed registration, on forms provided by the department, certifying that the engine is in compliance with the following federal regulations: (1) New source performance standards (NSPS) for stationary compression ignition internal combustion engines (40 CFR Part 60, Subpart IIII); or (2) New source performance standards (NSPS) for stationary spark ignition internal combustion engines (40 CFR Part 60, Subpart JJJJ); and (3) National emission standards for hazardous air pollutants (NESHAP) for reciprocating internal combustion engines (40 CFR Part 63, Subpart ZZZZ). Use of this exemption does not relieve an owner or operator from any obligation to comply with NSPS or NESHAP requirements.Page 58 of 110

A B 

## WAC 173-400(4) de minimis emission **units**

(xl) Gasoline dispensing facilities with

annual gasoline throughputs less than those specified in WAC 173-491-040 (4)(a). Gasoline dispensing facilities subject to chapter 173-491 WAC are exempt from toxic air pollutant analysis pursuant to chapter 173-460 WAC. J K L 

## New Mexico TITLE 20 ENVIRONMENTAL PROTECTION **CHAPTER 2 AIR QUALITY (STATEWIDE) PART 72 CONSTRUCTION PERMITS**  **Wyoming Chapter 06 Section 02 Permit requirements for construction, modification, and operation**  **Iowa 22.1(2) (455B) Exemptions**

A(3) Exhaust emissions from forklifts, courier vehicles, front end loaders, graders, carts, maintenance trucks, and fugitive emissions from fleet vehicle refueling operations, provided such emissions are not subject to any requirements under this Chapter (Air Quality), NSPS or NESHAP; A(5) Government military activities such as field exercises, explosions, weapons testing and demolition to the extent that such activities: (a) Do not result in visible emissions entering publicly accessible areas; and (b) Are not subject to a NSPS or NESHAP; A(6) Office activities, such as photocopying;
20.2.72 NMAC 6 A(7) Test drilling for characterization of underground storage tank and waste disposal sites; A(8) Non-anthropogenic wind blown dust; **(iv) Mobile internal combustion engines. (vi) The installation of air pollution control equipment.**  **(vii) Gasoline storage tanks at retail establishments. (viii)Such other minor sources which the Administrator determines to be**  **insignificant in both emission rate and ambient air quality impact.** c. Mobile internal combustion and jet engines, marine vessels and locomotives.

A(11) Food service, such as cafeteria activities; A(13) Use of portable aerospace ground equipment (such as power generators, compressors, heaters, air conditioners, lighting units) in direct support of aircraft operations and on or in the immediate vicinity of an airfield; A(14) Activities which occur strictly for preventive maintenance of highway bridges, displays and water towers, including: grinding, cutting, welding, painting, and general repairs; A(15) The act of repositioning or relocating equipment, pipes, ductwork, or conveyors within the plant site, but only when such change in physical configuration does not: (a) Reposition or relocate any source of air emissions or the emission points from any such source; or (b) Increase the amount of air emissions or the ambient impacts of such emissions. e. Incinerators and pyrolysis cleaning furnaces with a rated refuse burning capacity of less than 25 pounds per hour. Pyrolysis cleaning furnace exemption is limited to those units that use only natural gas or propane. Salt bath units are not included in this exemption. f. Fugitive dust controls unless a control efficiency can be assigned to the equipment or control equipment. g. Equipment or control equipment which reduces or eliminates all emission to the atmosphere. If a source wishes to obtain credit for emission reductions, a permit must be obtained for the reduction prior to the time the reduction is made. If a construction permit has been previously issued for the equipment or control equipment, all other conditions of the construction permit remain in effect.Page 59 of 110

A B 

## WAC 173-400(4) de minimis emission **units** J K L 

## New Mexico TITLE 20 ENVIRONMENTAL PROTECTION **CHAPTER 2 AIR QUALITY (STATEWIDE) PART 72 CONSTRUCTION PERMITS**  **Wyoming Chapter 06 Section 02 Permit requirements for construction, modification, and operation**  **Iowa 22.1(2) (455B) Exemptions**

k. Asbestos demolition and renovation projects subject to 40 CFR 61.145 as amended through January 16, 1991. o. A nonproduction surface coating process that uses only hand-held aerosol spray cans. p. Brazing, soldering or welding equipment or portable cutting torches used only for nonproduction activities. u. Equipment for carving, cutting, routing, turning, drilling, machining, sawing, surface grinding, sanding, planing, buffing, sandblast cleaning, shot blasting, shot peening, or polishing ceramic artwork, leather, metals (other than beryllium), plastics, concrete, rubber, paper stock, and wood or wood products, where such equipment is either used for nonproduction activities or exhausted inside a building. v. Manually operated equipment, as defined in 567—22.100(455B), used for buffing, polishing, carving, cutting, drilling, machining, routing, sanding, sawing, scarfing, surface grinding, or turning.Page 60 of 110

A B 

## WAC 173-400(4) de minimis emission **units** J K L 

## New Mexico TITLE 20 ENVIRONMENTAL PROTECTION **CHAPTER 2 AIR QUALITY (STATEWIDE) PART 72 CONSTRUCTION PERMITS**  **Wyoming Chapter 06 Section 02 Permit requirements for construction, modification, and operation**  **Iowa 22.1(2) (455B) Exemptions**Page 61 of 110

A B 

## WAC 173-400(4) de minimis emission **units** J K L 

## New Mexico TITLE 20 ENVIRONMENTAL PROTECTION **CHAPTER 2 AIR QUALITY (STATEWIDE) PART 72 CONSTRUCTION PERMITS**  **Wyoming Chapter 06 Section 02 Permit requirements for construction, modification, and operation**  **Iowa 22.1(2) (455B) Exemptions**Page 62 of 110

A B 

## WAC 173-400(4) de minimis emission **units** J K L 

## New Mexico TITLE 20 ENVIRONMENTAL PROTECTION **CHAPTER 2 AIR QUALITY (STATEWIDE) PART 72 CONSTRUCTION PERMITS**  **Wyoming Chapter 06 Section 02 Permit requirements for construction, modification, and operation**  **Iowa 22.1(2) (455B) Exemptions**Page 63 of 110

A B 

## WAC 173-400(4) de minimis emission **units** J K L 

## New Mexico TITLE 20 ENVIRONMENTAL PROTECTION **CHAPTER 2 AIR QUALITY (STATEWIDE) PART 72 CONSTRUCTION PERMITS**  **Wyoming Chapter 06 Section 02 Permit requirements for construction, modification, and operation**  **Iowa 22.1(2) (455B) Exemptions**Page 64 of 110

A B 

## WAC 173-400(4) de minimis emission **units** J K L 

## New Mexico TITLE 20 ENVIRONMENTAL PROTECTION **CHAPTER 2 AIR QUALITY (STATEWIDE) PART 72 CONSTRUCTION PERMITS**  **Wyoming Chapter 06 Section 02 Permit requirements for construction, modification, and operation**  **Iowa 22.1(2) (455B) Exemptions**Page 65 of 110

A B 

## WAC 173-400(4) de minimis emission **units** J K L 

## New Mexico TITLE 20 ENVIRONMENTAL PROTECTION **CHAPTER 2 AIR QUALITY (STATEWIDE) PART 72 CONSTRUCTION PERMITS**  **Wyoming Chapter 06 Section 02 Permit requirements for construction, modification, and operation**  **Iowa 22.1(2) (455B) Exemptions**Page 66 of 110

A B 

## WAC 173-400(4) de minimis emission **units** J K L 

## New Mexico TITLE 20 ENVIRONMENTAL PROTECTION **CHAPTER 2 AIR QUALITY (STATEWIDE) PART 72 CONSTRUCTION PERMITS**  **Wyoming Chapter 06 Section 02 Permit requirements for construction, modification, and operation**  **Iowa 22.1(2) (455B) Exemptions**Page 67 of 110

A B

(a) Maintenance/construction:

(i) Cleaning and sweeping of streets and paved surfaces; (ii) Concrete application, and installation;

(iii) Dredging wet spoils handling and placement;

(iv) Paving application and maintenance. This provision does not exempt asphalt plants from this chapter; 

# Ap**pendix E: Comparison of emission units and rates exempt from permitting in Washington,some other states, and the EPA Tribal NSR rule.** 

**WAC 173-400(4) de minimis emission units**  M N O



## Georgia 391-3-1-.03(6) **Ohio Statewide Rule 9745-31-03(A)(1) Permit to install exemptions**  **Missouri, 10 CSR 10-6-.061 Constructin Permit Exemptions** 

The exemptions do not apply to a combination of common emissions units that are a major stationary source or major modification, or to emissions units that the nNational Emissions Standards for Hazardous Air Pollutants applies (except for 40 CFR Part 61, subpart M, asbestos removal activities), or to emissions units that the "new source Performance Standards" aplies (except for subpart AAA, residential wood heaters)> Applies to all NSR actions except those requred in an operating, or actions subject to federally-mandated permitting requirements. Actual exemptions are listed in 10 CSR 10-6.061(3)(A) , and (B) Excluded Activities

(3) General Provisions. The following construction or modifications are not required to obtain a permit under 10 CSR 10-6.060: (A) Exempt Emission Units. 1. The following combustion equipment is exempt from 10 CSR 10-6.060 if the equipment emits only combustion products, and the equipment produces less than one hundred fifty (150) pounds per day of any air contaminant:Page 68 of 110

A B 

## WAC 173-400(4) de minimis emission **units**

(v) Plant maintenance and upkeep

activities (grounds keeping, general repairs, house keeping, plant painting, welding, cutting, brazing, soldering, plumbing, retarring roofs, etc.);

(vi) Plumbing installation, plumbing protective coating application and maintenance activities; M N O 

## Georgia 391-3-1-.03(6) **Ohio Statewide Rule 9745-31-03(A)(1) Permit to install exemptions**  **Missouri, 10 CSR 10-6-.061 Constructin Permit Exemptions** 

(e) Maintenance, Cleaning & Housekeeping. 2. Routine housekeeping activities such as painting buildings, roofing or paving parking lots, all clerical activities and all janitorial activities. 3. Maintenance activities such as: vehicle repair shops, brazing, soldering and welding equipment, carpenter shops, electrical charging stations, grinding and polishing operations maintenance shop vents, miscellaneous non-production surface cleaning, preparation and painting operations. 6. Vacuum-cleaning systems used exclusively for industrial, commercial, or residential housekeeping purposes. 14. Portable equipment used for the on site painting of buildings, towers, bridges and roads. (hh) All Maintenance welding. (3)(B)(5)A. Plant maintenance, and upkeep activities such as routine cleaning, janitorial services, use of janitorial products, grounds keeping, general repairs, architectural or maintenance painting, welding repairs, plumbing, roof repair, installing insulation, using air compressors and pneumatically operated equipment, and paving parking lots, provided these activities are not conducted as part of the installation’s primary business activity;Page 69 of 110

A B 

## WAC 173-400(4) de minimis emission **units**

(vii) Roofing application and

maintenance;

(viii) Insulation application and maintenance; (ix) Janitorial services and consumer use of janitorial products;

(x) Construction activities that do not result in new or modified stationary sources or portable stationary sources.

(b) Storage tanks:

(i) Lubricating oil storage tanks. This provision does not exempt wholesale distributors of lubricating oils from this chapter; (ii) Polymer tanks and storage devices and associated pumping and handling equipment, used for solids dewatering and flocculation; M N O 

## Georgia 391-3-1-.03(6) **Ohio Statewide Rule 9745-31-03(A)(1) Permit to install exemptions**  **Missouri, 10 CSR 10-6-.061 Constructin Permit Exemptions** 

(3)(B)(5)A. Plant maintenance, and upkeep activities such as routine cleaning, janitorial services, use of janitorial products, grounds keeping, general repairs, architectural or maintenance painting, welding repairs, plumbing, roof repair, installing insulation, using air compressors and pneumatically operated equipment, and paving parking lots, provided these activities are not conducted as part of the installation’s primary business activity;

(6)(c) (l)(iii) Liquids with a capacity of less than seven houndred gallons (2)(X) The following liquid storage and loading equipment: (I) Storage tanks and vessels having a capacity of less than five hundred (500) gallons; and (II) Tanks, vessels, and pumping equipment used exclusively for the storage and dispensing of any aqueous solution which contains less than one percent (1%) by weight of organic compounds. Tanks and vessels storing the following materials are not exempt:

1. All petroleum liquid storage tanks storing a liquid with a true vapor pressure of equal to or less than 0.50 psia as stored.

7. All chemical storage tanks used to store a chemical with a true vapor pressure of less than or equal to 10 millimeters of mercury. (l)(i) Inorganic liquids inlcuding water (at standard termprature and pressure) except as described in paragraph (A)(1)(l)(v) of this rulePage 70 of 110

A B 

## WAC 173-400(4) de minimis emission **units**

(iii) Storage tanks, reservoirs, pumping

and handling equipment of any size containing soaps, vegetable oil, grease, animal fat, and nonvolatile aqueous salt solutions;

(iv) Process and white water storage tanks; (v) Operation, loading and unloading of storage tanks and storage vessels, with lids or other appropriate closure and less than 260-gallon capacity (35 cubic feet);

(vi) Operation, loading and unloading of storage tanks,≤ 1100 gallon capacity, with lids or other appropriate closure, not for use with materials containing toxic air pollutants, as listed in chapter 173-460 WAC, max. VP 550 mm mercury at 21°C;

(vii) Operation, loading and unloading storage of butane, propane, or liquefied petroleum gas with a vessel capacity less than 40,000 gallons;

(viii) Tanks, vessels and pumping equipment, with lids or other appropriate closure for storage or dispensing of aqueous solutions of inorganic salts, bases and acids. M N O 

## Georgia 391-3-1-.03(6) **Ohio Statewide Rule 9745-31-03(A)(1) Permit to install exemptions**  **Missouri, 10 CSR 10-6-.061 Constructin Permit Exemptions** 

7. All chemical storage tanks used to store a chemical with a true vapor pressure of less than or equal to 10 millimeters of mercury. (dd) Vegetable oil storage tanks and pumps and valves used in vegetables oil processing operations (l)(i) Inorganic liquids inlcuding water (at standard termprature and pressure) except as described in paragraph (A)(1)(l)(v) of this rule (2)Y. The following chemical processing equipment or operations: (I) Storage tanks, reservoirs, pumping, and handling equipment, and mixing and packaging equipment containing or processing soaps, vegetable oil, grease, animal fat, and nonvolatile aqueous salt solutions, provided appropriate lids and covers are utilized;

6. Portable drums and barrels provided that the volume of each container does ot exceed 550 gal.

2. All petroleum liquid storage tanks with a capacity of less than 40,000 gallons storing a liquid with a true vapor pressure of equal to or less than 2.0 psia as stored. 3. All petroleum liquid storage tanks with a capcity of less than 10,000 gallons storing petroleum liquid. (l)(iv) Liquids with a capacity of less than or equal to ten thousand gallons equipped with submerged fill and that store organic liquids or mixtures containing organic liquids (excludingt pesticides) with each organic liquid component's vapor pressure of less than or equal to 1.5 pounds per square inch absolute at seventy degrees Farenheit

4. Pressurized vessels designed to operate in excess of 30 psig storing a petroleum fuel. (l)(ii) presurized storage for inorganic compounds or propane, butane, isobutane, and liquid petroleum gases

7. All chemical storage tanks used to store a chemical with a true vapor pressure of less than or equal to 10 millimeters of mercury. (l)(v) Acids (as defined in the most recent editino of the chemical rubber company (CRC) handbook of chemistry and physics) stored in tanks less than or equal to seven thousand five hunderdgallons capacity. (2)(X)(II) Tanks, vessels, and pumping equipment used exclusively for the storage and dispensing of any aqueous solution which contains less than one percent (1%) by weight of organic compounds. Tanks and vessels storing the following materials are not exempt:(a) Sulfuric or phosphoric acid with an acid strength of more than ninetynine percent (99.0%) by weight; (b) Nitric acid with an acid strength of more than seventy percent (70.0%) by weight; (c) Hydrochloric or hydrofluoric acid with an acid strength of more than thirty percent (30.0%) by weight; or (d) More than one liquid phase, where the top phase contains more than one percent (1%) VOC by weight;Page 71 of 110

A B 

## WAC 173-400(4) de minimis emission **units**

(i)≤ 500,000 Btu/hr using coal with ≤

0.5% sulfur or other solid fuels with≤ 0.5% sulfur;

(ii)≤ 500,000 Btu/hr using used oil, per the requirements of RCW 70.94.610;

(iii)≤ 400,000 Btu/hr using wood waste
or paper;

(iv)≤ 1,000,000 Btu/hr using gasoline, kerosene, #1, or #2 fuel oil and with≤0.05% sulfur; (c) New or modified emission units with combined aggregate heat inputs to combustion units (excluding emergency engines exempted by subsection (4)(h)(xxxix) of this section), less than or equal to all of the following, as applicable: M N O 

## Georgia 391-3-1-.03(6) **Ohio Statewide Rule 9745-31-03(A)(1) Permit to install exemptions**  **Missouri, 10 CSR 10-6-.061 Constructin Permit Exemptions** 

(b) Combustion Equipment. 3. Any fuel-burning equipment with a rated input capacity of 2.5 million BTU's per hour or less. (3)(A)1.B. Any combustion equipment with a capacity of less than one (1) million Btus per hour heat input; (3)(A)2. The following establishments, systems, equipment and operations are exempt from 10 CSR 10-6.060: A. Office and commercial buildings, where emissions result solely from (b) Combustion Equipment. 1. Fuel-burning equipment having a total heat input capacity of less than 10 million BTU's per hour burning only natural gas, LPG and/or distillate fuel oil containing 0.50% sulfur by weight or less.

(b) Fossil fuel or wood fuel-fired boilers, preheaters, air heaters, or water heaters less than one million Brithsh thermal units per hour except units burning wsate fuels or waste oil.

(b) Combustion Equipment. 2. Fuel-burning equipment rated at less than 5 million BTU's per hour burning a wood or fossil fuel. (b) Fossil fuel or wood fuel-fired boilers, preheaters, air heaters, or water heaters less than one million Brithsh thermal units per hour except units burning wsate fuels or waste oil.

(b) Combustion Equipment. 1. Fuel-burning equipment having a total heat input capacity of less than 10 million BTU's per hour burning only natural gas, LPG and/or distillate fuel oil containing 0.50% sulfur by weight or less. (a) Fossil fuel-fired boilers, preheaters, air heaters, water heaters, or heaters used for other heat exchange media less than ten million Brithsh thermal units per hour burning only natural gas, distillate oil (with less than or equal to 0.5 percent by weight sulfur), or liquid petroleum gas. (c) Fossil fuel-fired furnaces or dryers less than ten million Brithsh thermal units per hour and burning only natural gas, distillate oil (with less than or equal to 0.5 percent by weight sulfur), or liquid petroleum gas and the only emissions are from the products or combustion from fuel and water vapor and where no melting or refining occurs nor where any burning of any material occurs.Page 72 of 110

A B 

## WAC 173-400(4) de minimis emission **units**

(v)≤ 4,000,000 Btu/hr using natural gas,

propane, or LPG.

(d) Material handling:

(i) Continuous digester chip feeders;

(ii) Grain elevators not licensed as warehouses or dealers by either the Washington state department of agriculture or the U.S. Department of Agriculture;

(iii) Storage and handling of water based lubricants for metal working where organic content of the lubricant is≤ 10%;

(iv) Equipment used exclusively to pump, load, unload, or store high boiling point organic material in tanks less than one million gallon, material with initial atmospheric boiling point not less than 150°C or vapor pressure not more than 5 mm mercury at 21°C, with lids or other appropriate closure. M N O 

## Georgia 391-3-1-.03(6) **Ohio Statewide Rule 9745-31-03(A)(1) Permit to install exemptions**  **Missouri, 10 CSR 10-6-.061 Constructin Permit Exemptions** 

(b) Combustion Equipment. 1. Fuel-burning equipment having a total heat input capacity of less than 10 million BTU's per hour burning only natural gas, LPG and/or distillate fuel oil containing 0.50% sulfur by weight or less. (a) Fossil fuel-fired boilers, preheaters, air heaters, water heaters, or heaters used for other heat exchange media less than ten million Brithsh thermal units per hour burning only natural gas, distillate oil (with less than or equal to 0.5 percent by weight sulfur), or liquid petroleum gas. (c) Fossil fuel-fired furnaces or dryers less than ten million Brithsh thermal units per hour and burning only natural gas, distillate oil (with less than or equal to 0.5 percent by weight sulfur), or liquid petroleum gas and the only emissions are from the products or combustion from fuel and water vapor and where no melting or refining occurs nor where any burning of any material occurs. (3)(A)1.A. Any combustion equipment using exclusively natural gas or liquefied petroleum gas or any combination of these with a capacity of less than ten (10) million British thermal units (Btus) per hour heat input; (3)(A)1C. Drying or heat treating ovens with less than ten (10) million Btus per hour capacity provided the oven does not emit pollutants other than the combustion products and the oven is fired exclusively by natural gas, liquefied petroleum gas, or any combination thereof;

(v) Combustors used exclusively for the purpose of research and development of more efficient combustion of coal or more effective prevention of air pollutant emissions from coal combusitn, less than ten million British thermal units per hyour and an annual average capacity factor of not more than twenty percent.

(3)(A)2.E. Any grain handling, storage and drying facility which— (I) Is in noncommercial use only (used only to handle, dry or store grain produced by the owner) if— (a) The total storage capacity does not exceed seven hundred fifty thousand (750,000) bushels; (b) The grain handling capacity does not exceed four thousand (4,000) bushels per hour; and (c) The facility is located at least five hundred feet (500') from any recreational area, residence or business not occupied or used solely by the

owner; (II) Is in commercial or noncommercial use and the total storage capacity of the new and any existing facility(ies) does not exceed one hundred ninety thousand (190,000) bushels; or (III) Is in commercial or noncommercial use and has an installation of additional grain storage capacity in which there is no increase in hourly grain handling capacity and that utilizes existing grain receiving and loadout equipment

7. All chemical storage tanks used to store a chemical with a true vapor pressure of less than or equal to 10 millimeters of mercury. (3)(A)2.L. Laboratory equipment used exclusively for chemical and physical analysis or experimentation, except equipment used for controlling radioactive air contaminants;Page 73 of 110

A B 

## WAC 173-400(4) de minimis emission **units**

(e) Water treatment:

(i) Septic sewer systems, not including active wastewater treatment facilities;

(ii) NPDES permitted ponds and lagoons used solely for the purpose of settling suspended solids and skimming of oil and
grease; (iii) De-aeration (oxygen scavenging) of water where toxic air pollutants as defined in chapter 173-460 WAC are not emitted;

(iv) Process water filtration system and demineralizer vents; (v) Sewer manholes, junction boxes, sumps and lift stations associated with wastewater treatment systems;

(vi) Demineralizer tanks; (vii) Alum tanks; (viii) Clean water condensate tanks.

(f) Environmental chambers and laboratory equipment:

(i) Environmental chambers and humidity chambers using only gases that are not toxic air pollutants listed in chapter 173-460 WAC; (ii) Gas cabinets using only gases that are not toxic air pollutants regulated under chapter 173-460 WAC; (iii) Installation or modification of a single laboratory fume hood; M N O 

## Georgia 391-3-1-.03(6) **Ohio Statewide Rule 9745-31-03(A)(1) Permit to install exemptions**  **Missouri, 10 CSR 10-6-.061 Constructin Permit Exemptions** 

(g) Pollution Control. 1. Sanitary wastewater collection and treatment systems, except incineration equipment. (3)(A)2.J. Equipment, including air pollution control equipment, but not including an anaerobic lagoon, that emits odors but no regulated air pollutants;

(g) Pollution Control. 1. Sanitary wastewater collection and treatment systems, except incineration equipment. (3)(A)2.J. Equipment, including air pollution control equipment, but not including an anaerobic lagoon, that emits odors but no regulated air pollutants;

(b) Combustion Equipment. 12. Boiler water treatment operations.

(3)(A)2.J. Equipment, including air pollution control equipment, but not including an anaerobic lagoon, that emits odors but no regulated air pollutants;

(3)(A)2.P. The following miscellaneous activities: (VII) Environmental chambers, shock chambers, humidity chambers, and solar simulators provided no hazardous air pollutants are emitted by the
processPage 74 of 110

A B 

## WAC 173-400(4) de minimis emission **units**

(iv) Laboratory research,

experimentation, analysis and testing at sources whose primary purpose and activity is research or education. To be exempt, these sources must not engage in the production of products, or in providing commercial services, for sale or exchange for commercial profit except in a de minimis manner. Pilot-plants or pilot scale processes at these sources are not exempt.

(v) Laboratory calibration and maintenance equipment. (g) Monitoring/quality assurance/testing:

(i) Equipment and instrumentation used for quality control/assurance or inspection
purpose;

(ii) Hydraulic and hydrostatic testing equipment; (iii) Sample gathering, preparation and management; (iv) Vents from emission monitors and other analyzers.

(h) Miscellaneous:

(i) Single-family residences and duplexes; M N O 

## Georgia 391-3-1-.03(6) **Ohio Statewide Rule 9745-31-03(A)(1) Permit to install exemptions**  **Missouri, 10 CSR 10-6-.061 Constructin Permit Exemptions** 

(f) Laboratories and Testing. 1. Laboratory equipment used exclusively for chemical or physical analyses; 4. Research and development facilities, quality control testing facilities and/or small pilot projects, where combined daily emissions from all operations are below all of the following thresholds: (i) Less than 125 pounds per day of carbon monoxide; (ii) Less than 0.8 pounds per day of lead; (iii) Less than 50 pounds per day of particulate matter, PM10, or sulfur dioxide; (iv) Less than 50 pounds per day of nitrogen oxides or VOCs except in the Counties of Cherokee, Clayton, Cobb, Coweta, DeKalb, Douglas, Fayette, Forsyth, Fulton, Gwinnett, Henry, Paulding, or Rockdale, where less than 15 pounds per day of nitrogen oxides; or VOCs; and (v) Less than 5 pounds per day of any single hazardous air pollutant and less than 12.5 pounds per day of any combination of hazardous air pollutants. (i) Laboratory equipment and laboratory fume hoods used exclusively for chemical or physical analyses and bench scale laboratory equipment. (cc) Air contaminant sources at nonproductin research and development operations with a potential to emit from any air contaminant source of less than one ton per year of any criteria pollutant per air contaminant source.

(f) Laboratories and Testing. 2. Sampling connections used exclusively to withdraw materials for testing and analysis, including air contaminant detectors and vent lines; 3. Vacuum producing devices;

(f) Laboratories and Testing.

(3)(A)2.P. (VI) Hydraulic and hydrostatic testing equipment;

(f) Laboratories and Testing. 2. Sampling connections used exclusively to withdraw materials for testing and analysis, including air contaminant detectors and vent lines;

K. Residential wood heaters, cookstoves or fireplaces;Page 75 of 110

A B 

## WAC 173-400(4) de minimis emission **units**

(ii) Plastic pipe welding;

(iii) Primary agricultural production activities including soil preparation, planting, fertilizing, weed and pest control, and harvesting;

(iv) Comfort air conditioning;

(v) Flares used to indicate danger to the public;

(vi) Natural and forced air vents and stacks for bathroom/toilet activities;

(vii) Personal care activities;

(viii) Recreational fireplaces including the use of barbecues, campfires, and ceremonial fires; (ix) Tobacco smoking rooms and areas;

(x) Noncommercial smokehouses;

(xi) Blacksmith forges for single forges; M N O 

## Georgia 391-3-1-.03(6) **Ohio Statewide Rule 9745-31-03(A)(1) Permit to install exemptions**  **Missouri, 10 CSR 10-6-.061 Constructin Permit Exemptions** 

(d) Agricultural Operations. 1. Farm equipment used for soil preparation, livestock handling, crop tending and harvesting and for other farm related activities. 2. Herbicide and pesticide mixing and application activities for on site use. (o) Storage tanks, storage silos, and other farm equipment located on a farm and utilized exclusively for the production of food or grain on the premises. T. The following food and agricultural equipment: (I) Any equipment used in agricultural operations to grow crops; (II) Equipment used exclusively to slaughter animals. This exemption does not apply to other slaughterhouse equipment such as rendering cookers, boilers, heating plants, incinerators, and electrical power generating equipment

(e) Maintenance, Cleaning & Housekeeping. 1. Heating, air conditioning and ventilation systems not designed to remove air contaminants generated by or released from process or fuel-burning equipment. (3)(A)2.B. Comfort air conditioning or comfort ventilating systems not designed or used to remove air contaminants generated by, or released from, specific units of equipment

(3)(A)2.N. Stacks or vents to prevent the escape of sewer gases through plumbing traps for systems handling domestic sewage only. Systems which include any industrial waste do not qualify for this exemption

(e) Maintenance, Cleaning & Housekeeping. 10. Laundry dryers, extractors, or tumblers for fabric cleaned with only water solutions of bleach or detergents. 11. Non-Perchloroethylene Dry-cleaning equipment with a capacity of 100 pounds per hour or less of clothes. (q) A drycleaning facility constructed between January 1, 1974 and December 31,m 1981 in which the annual amounts of fabric drycleaned with perchloroethylene is less than sixty thourshad pounds and is not located in Butler, Clermont, Cuyahoga, Franklin, Greene, Hamilton, Lake, Lorain, Lucas, Mahoning< Medina, Montgomery, Portage, Stark, Summit, Trumbull, Warren, and Wood counties. (3)(A)2.

(3)(A)2.M. Recreational fireplaces;

(3)(A)2.P. (II) Tobacco smoking rooms and areas

(3)(A)2.T. (III) Commercial smokehouses or barbecue units in which the maximum horizontal inside cross-sectional area does not exceed twenty (20) square feet (b) Combustion Equipment. 5. Blacksmith forges. (3)(A)2.P. (V) Blacksmith forges, drop hammers, and hydraulic pressesPage 76 of 110

A B 

## WAC 173-400(4) de minimis emission **units**

(xii) Vehicle maintenance activities, not

including vehicle surface coating;

(xiii) Vehicle or equipment washing (see (c) of this subsection for threshold for boilers); (xiv) Wax application;

(xv) Oxygen, nitrogen, or rare gas extraction and liquefaction equipment not including internal and external combustion equipment; (xvi) Ozone generators and ozonation equipment; (xvii) Solar simulators; (xviii) Ultraviolet curing processes, to the extent that toxic air pollutant gases as defined in chapter 173-460 WAC are not emitted; (xix) Electrical circuit breakers, transformers, or switching equipment installation or operation; (xx) Pulse capacitors; (xxi) Pneumatically operated equipment, including tools and hand held applicator equipment for hot melt adhesives;

(xxii) Fire suppression equipment;

(xxiii) Recovery boiler blow-down tank;

(xxiv) Screw press vents; M N O 

## Georgia 391-3-1-.03(6) **Ohio Statewide Rule 9745-31-03(A)(1) Permit to install exemptions**  **Missouri, 10 CSR 10-6-.061 Constructin Permit Exemptions** 

(e) Maintenance, Cleaning & Housekeeping. 3. Maintenance activities such as: vehicle repair shops, brazing, soldering and welding equipment, carpenter shops, electrical charging stations, grinding and polishing operations maintenance shop vents, miscellaneous non-production surface cleaning, preparation and painting operations.

(h) Industrial Operations. 12. Equipment used exclusively for mizing and blending water-based adhesives and coating at ambient temperatures. (3)(A)2.W.(XI) Equipment used exclusively for the melting and applying of wax containing less than one percent (1%) VOC by weight

(h) Industrial Operations. 9. Ozonization process or process equipment.

(3)(A)2.V. (II) Any powder coating operation, or radiation cured coating operation where ultraviolet or electron beam energy is used to initiate a reaction to form a polymer network

(b) Combustion Equipment. 13. Fire fighter or other emergency/safety equipment used to train fire fighters. (3)(B)5.C. Fire suppression equipment and emergency road flaresPage 77 of 110

A B 

## WAC 173-400(4) de minimis emission **units**

(xxv) Drop hammers or hydraulic presses

for forging or metal working;

(xxvi) Production of foundry sand molds, unheated and using binders less than 0.25% free phenol by sand weight;

(xxvii) Kraft lime mud storage tanks and process vessels;

(xxviii) Lime grits washers, filters and handling;

(xxix) Lime mud filtrate tanks;

(xxx) Lime mud water;

(xxxi) Stock cleaning and pressurized pulp washing down process of the brown stock washer;

(xxxii) Natural gas pressure regulator vents, excluding venting at oil and gas production facilities and transportation marketing facilities; M N O 

## Georgia 391-3-1-.03(6) **Ohio Statewide Rule 9745-31-03(A)(1) Permit to install exemptions**  **Missouri, 10 CSR 10-6-.061 Constructin Permit Exemptions** 

(h) Industrial Operations. 5. Equipment used exclusively for rolling, forging, pressing, stamping, spinning, or extruding either hot or cold metals or plastic such as drop hammers or hydraulic presses for forging or metalworking. 6. Die casting machines.Page 78 of 110

A B 

## WAC 173-400(4) de minimis emission **units**

(xxxiii) Solvent cleaners less than 10

square feet air-vapor interface with solvent vapor pressure not more than 30 mm mercury at 21°C where no toxic air pollutants as listed under chapter 173-460 WAC are emitted;

(xxxiv) Surface coating, aqueous solution or suspension containing≤ 1% (by weight) VOCs, or≤ 1% (by weight) toxic air pollutants as listed in chapter 173-460 WAC; M N O 

## Georgia 391-3-1-.03(6) **Ohio Statewide Rule 9745-31-03(A)(1) Permit to install exemptions**  **Missouri, 10 CSR 10-6-.061 Constructin Permit Exemptions** 

(e) Maintenance, Cleaning & Housekeeping. 12. Cold cleaners having an air/vapor interface of not more than 10 square feet and that do not use a halogenated solvent. (w) Solvent cold cleaners that meet the provisions of paragraph (o) of rule 3745-21-09 of the Administrative Code and have a liquid surface area less than or equal to ten square feed or a reservoit opening of less than six inches in diameter. (3)(B)6. The following miscellaneous surface preparation and cleaning activities: A. Equipment and containers used for surface preparation, cleaning, or stripping by use of solvents or solutions that meet all of the following: {See rule for criteria}Page 79 of 110

A B 

## WAC 173-400(4) de minimis emission **units**

(xxxv) Cleaning and stripping activities

and equipment using solutions having≤ 1% VOCs (by weight) or≤ 1% (by weight) toxic air pollutants. Acid solutions used on metallic substances are not exempt;

(xxxvi) Dip coating operations, using materials less than 1% VOCs (by weight) or ≤ 1% (by weight) toxic air pollutants as listed in chapter 173-460 WAC.

(xxxvii) Abrasive blasting performed inside a booth or hangar designed to capture the blast grit or overspray.

(xxxviii) For structures or items too large to be reasonably handled indoors, abrasive blasting performed outdoors that employs control measures such as curtailment during windy periods and enclosure of the area being blasted with tarps and uses either steel shot or an abrasive containing less than one percent (by mass) which would pass through a No. 200 sieve.

(xxxix) Stationary emergency internal combustion engines with an aggregate brake horsepower that is less than or equal to 500 brake horsepower. M N O 

## Georgia 391-3-1-.03(6) **Ohio Statewide Rule 9745-31-03(A)(1) Permit to install exemptions**  **Missouri, 10 CSR 10-6-.061 Constructin Permit Exemptions** 

(3)(B)6.C. Abrasive blasting sources that have a confined volume of less than one hundred (100) cubic feet and are controlled by a particulate filter; D. Blast cleaning equipment using a suspension of abrasive in water; E. Portable blast cleaning equipment for use at any single location for less than sixty (60) days

(b) Combustion Equipment. 11. Stationary engines. (i) Burning natural gas, LPG, gasoline, dual fuel, or diesel fuel which are used exclusively as emergency generators; or (ii) Burning natural gas, LPG, and/or diesel fuel and used for emergency and/or peaking power where the peaking power use does not exceed 200 hrs/yr. except in the counties of Banks, Barrow, Bartow, Butts, Carroll, Chattooga, Cherokee, Clarke, Clayton, Cobb, Coweta, Dawson, DeKalb, Douglas, Fayette, Floyd, Forsyth, Fulton, Gordon, Gwinnett, Hall, Haralson, Heard, Henry, Jackson, Jasper, Jones, Lamar, Lumpkin, Madison, Meriwether, Monroe, Morgan, Newton, Oconee, Paulding, Pickens, Pike, Polk, Putnam, Rockdale, Spalding, Troup, Upson, and Walton where such engines with a rated capacity equal to and greater than 300 kilowatts are not exempt; or(iii) Used for other purposes provided that the total horsepower of all nongasoline burning engines combined are less than 1500 engine horsepower and no individual engine operates for more than 1000 hrs/yr.; or (iv) Used for other purposes provided that the total horsepower of all gasoline burning engines combined are less than 225 horsepower and no individual engine operates for more than 1000 hrs/yr. (v) For the purpose of this subsection, the following definitions shall apply: (I) An “emergency generator” means a generator whose function is to provide back-up power when electric power from the local utility is interrupted and which operates for less than 500 hours per year. (II) “Used for peaking power” means used to reduce the electrical power requirements on the local utility grid. This could be for supplying power during the local utility’s peak demand periods, or for peak shaving by the facility. (mm) Natural gas compressor engines used for maintenance activities with a heat input rate of no greater than 10 million British thermal units per hour fired by natural gas, gasoline or distillate oil ( with less than or equal to 0.5 pwecent by weight sulfur) (nn) Emergency electrical generators or emergency firefightingt water pumps less than or equal to 50 horse power that burn gasoline, natural gas, distillate oil (with less than or equal to 0.5 percent by weight sulfur), or liquid petroleum gas. (3)(A)2.BB. Internal combustion engines and gas turbine driven compressors, electric generator sets, and water pumps, used only for portable or emergency services, provided that the maximum annual operating hours shall not exceed five hundred (500) hours. Emergency generators are exempt only if their sole function is to provide back-up power when electric power from the local utility is interrupted. This exemption only applies if the emergency generators are operated only during emergency situations and for short periods of time to perform maintenance and operational readiness testing. The emergency generator shall be equipped with a non-resettable meter (3)(A)2.Q. The following internal combustion engines: (I) Portable electrical generators that can be moved by hand without the assistance of any motorized or non-motorized vehicle, conveyance or device; (II) Spark ignition or diesel fired internal combustion engines used in conjunction with pumps, compressors, pile drivers, welding, cranes, and wood chippers or internal combustion engines or gas turbines of less than two hundred fifty (250) horsepower ratingPage 80 of 110

A B 

## WAC 173-400(4) de minimis emission **units**

(xl) Gasoline dispensing facilities with

annual gasoline throughputs less than those specified in WAC 173-491-040 (4)(a). Gasoline dispensing facilities subject to chapter 173-491 WAC are exempt from toxic air pollutant analysis pursuant to chapter 173-460 WAC. M N O 

## Georgia 391-3-1-.03(6) **Ohio Statewide Rule 9745-31-03(A)(1) Permit to install exemptions**  **Missouri, 10 CSR 10-6-.061 Constructin Permit Exemptions** 

(ee) Gasoline dispensing facilities, as defined in paragraph (H) of rule 3745- 21-01 of the Administrative Code, or other motor fuel dispensing facilities that are equipped with Stage ! Vapor control and are not located in Ashtabula, butler, Clark, Clermont, Cuyahoga, Delawate, Franklin, Geauga, Green, Hamilton, Lake, Licking, Lorain, Lucas, Mahoning, Medina, Miami, Montgomery, Portage, Stark, Summit, Trumbull, Watten, or Wood Counties. (ff) Gasoline dispensing facilities, defined in paragraph (H) of rule 3745-21-01 of the Administrative Code, or other motor fuel dispensing facilites that have an individual maximum annual through put of less than six thousand gallons of gasoline per year.

(b) Combustion Equipment. 4. Equipment used for cooking food for immediate human consumption. 6. Clean steam condensate and steam relief vents. 7. Funeral homes and crematories of any size. 8. Air curtain destructor used at land clearing at a construction site. 9. Open burning. 10. Small incinerators operating as follows: (i) less than 8 million BTU's per hour input, firing types 0, 1, 2 and/or 3 waste; or (ii) less than 8 million BTU's per hour input with no more than 10% pathological (type 4) waste by weight combined with types 0, 1, 2 and/or 3 waste; or (iii) less than 4 million BTU's per hour heat input firing type 4 waste (e) Equipment used exclusively for the packaging of lubricants or greases, and water-borne adhesives, coating or binders. (f) Equipment used exclusively for the mixing and blending of materials at ambient temperature to make water-borne adhesives, coatings or binders. (g) Bakery overn that bake: (i) Chemically leavened products; or (ii) Yeast dough products and that are not located at a commercial bakery; or (iii) Biscuits, crackers, cookies and similar nonleavened projects; or (iv) Yeast dough, bread, buns and rolls at a bakery having a total maximum yeast dough, bread, buns and rolls productin rate of less than or equal to one thousand pounds per hour. (h) Mixers and blenderss and deep fat fryers (except deep fat fryers used to produce potato chips) where the products are edible and intended for human consumption. (j) Photographic process equipment by which an image is reporduced upon material sensitized to radiant energy. (3)(A)1.C. Drying or heat treating ovens with less than ten (10) million Btus per hour capacity provided the oven does not emit pollutants other than the combustion products and the oven is fired exclusively by natural gas, liquefied petroleum gas, or any combination thereof; and D. Any oven with a total production of yeast leavened bakery products of less than ten thousand (10,000) pounds per operating day heated either electrically or exclusively by natural gas firing with a maximum capacity of less than ten (10) million Btus per hour.

(e) Maintenance, Cleaning & Housekeeping. 5. Cold storage refrigeration equipment. 7. Equipment used for portable steam cleaning. 8. Blast-cleaning equipment using a suspension of abrasive in water and any exhaust system or collector serving them exclusively. 9. Portable blast-cleaning equipment. 15. Non-routine clean out of tanks and equipment for the purposes of worker entry or in preparation for maintenance or decommissioning. 16. Equipment used for the washing or drying of fabricated products provided that no VOCs are used in the process and that no oil or solid fuels are burned. 17. Devices used exclusively for cleaning metal parts or surfaces by burning off residual amounts of paint, varnish, or other foreign material, provided that such devices are equipped with afterburners. 18. Fresh water cooling towers provided that the total potential emissions from the entire source remain below 10 tons per year of any single hazardous air pollutant and below 25 tons per year of any combination of hazardous air pollutants. (k) Equipment used for injection molding of resins where no more than onemillion pounds of resing (thermoplastic or thermosetting) per rolling twelvemonth period are used in injection machines at the facility. (m) Compression molding presses used for the curing of plastic products that qualify for the de minimis exemption under rule 3745-151-05 of the Administrative Code. this type of press uses a thermosetting resin and involves a chemical reaction, usually involving heat that converts the material (e.g., polyesters, polyurethanes, epoxy resins, etc.) to a solid, insoluble state using a hardening or curing operation. (n) presses used exclusively for extruding clay. (p) The relocation of any protable source in teh state of Ohio that meets either paragraph (A)1)(p)(i) or paragraph (A)(1)(p(ii) of the following: {see rule text for conditions} (r) Noncontinuous solvent recycling or reclaiming units with less than twenty gallons capacity. (3)(A)2. C. Equipment used for any mode of transportation F. Restaurants and other retail establishments for the purpose of preparing food for employee and guest consumption; G. Any wet sand and gravel production facility that obtains its material from subterranean and subaqueous beds where the deposits of sand and gravel are consolidated granular materials resulting from natural disintegration of rock and stone and whose maximum production rate is less than five hundred (500) tons per hour. All permanent in-plant roads shall be paved and cleaned, or watered, or properly treated with dust-suppressant chemicals as necessary to achieve good engineering control of dust emissions. Only natural gas shall be used as a fuel when drying; H. Equipment solely installed for the purpose of controlling fugitive dust; I. Equipment or control equipment which eliminates all emissions to the ambient air O. Noncommercial incineration of dead animals, the on-site incineration of resident animals for which no consideration is received or commercial profit is realized as authorized in section 269.020.6, RSMo 2000Page 81 of 110

A B 

## WAC 173-400(4) de minimis emission **units** M N O 

## Georgia 391-3-1-.03(6) **Ohio Statewide Rule 9745-31-03(A)(1) Permit to install exemptions**  **Missouri, 10 CSR 10-6-.061 Constructin Permit Exemptions** 

(g) Pollution Control. 2. On site soil or groundwater decontamination units. 3. Bioremediation operations. 4. Garbage compactors and garbage handling equipment 5. Municipal Solid Waste Landfills which meet the following criteria: (i) The total design capacity of the landfill is less than or equal to 2.756 million tons (2.5 million megagrams) or 3.27 million cubic yards (2.5 million cubic meters)of solid waste; and (ii) The emissions of VOC are less than 25 tons per year for landfills located within Cherokee, Clayton, Cobb, Coweta, DeKalb, Douglas, Fayette, Forsyth, Fulton, Gwinnett, Henry, Paulding, or Rockdale counties; and (iii) The emissions of nitrogen oxides (NOX) from operations other than the final control device are less than 25 tons per year for landfills located within Cherokee, Clayton, Cobb, Coweta, DeKalb, Douglas, Fayette, Forsyth, Fulton, Gwinnett, Henry, Paulding, or Rockdale counties. (s) Nonheat-set or sheet-feed presses with an organic compound potential to emit of less than three tons per year. (t) An incinerator designed and used to dispose of residential wastes and having a capacity for serving no more than five householdes. (u) Equipment used for spraying or applying insecticides, pesticides and hervbicides except at facilities producing these substances or mixtures for sale or distribution (x) Ink-jet printers (y) Grinding and maching operations, abrasive blasting, pneumaticconveying, and wood working operations controlled with a fabric filter, scrubber, or mist collector designed to emit not more than 0.03 grains of particulate per dry standard cubic foot of exhasut gas with less than four thousand acfm volume, venting inside a building, and emitting less than ten pounds per day of non paatricualte air contaminants. (z) Uncontrolled grinding, machining, and sanding operations, abrasive cleaning opertions (dry or wet), pneumatic conveying and woodworking operations that have no visible emissions, vent to teh inside of a building and emit less than ten pounds per day of nonparticulate air contaminants. (3)(A)2. P. The following miscellaneous activities: (I) Use of office equipment and products, not including printing establishments or businesses primarily involved in photographic reproduction. This exemption is solely for office equipment that is not part of the manufacturing or production process at the installation; (III) Hand-held applicator equipment for hot melt adhesives with no volatile organic compound (VOC) in the adhesive formula; (IV) Paper trimmers and binders (3)(A)2. Q(III) Laboratory engines used in research, testing, or teaching

(h) Industrial Operations. 1. Concrete block, brick plants, concrete products plants, and ready mix concrete plants producing less than 125,000 tons per yer of product. 2. Small aluminum scrap metal reclaimers (non-smelters). 3. Any of the following processes or process equipment which are electrically heated or which fire natural gas, LPG or distillate (#2) fuel oil at a maximum total heat input rate of not more than 10 million BTU’s per hour. (i) Furnaces for heat treating glass or metals, the use of which does not involve molten materials, oil-coated parts, or oil quenching. (ii) Porcelain enameling furncaces or porcelains enameling drying ovens. (iii) Kilns for firing ceramic ware. (iv) Crucible furnaces, pot furnaces, or induction melting and holding furnaces with a capacity of 1,000 pounds or less each, in which sweating or distilling is not conducted and in which fluxing is not conducted utilizing free chlorine or flouride drivatives, or ammonium compounds. (v) Bakery ovens and confection cookers. (vi) Feed mill or grain mill ovens. (vii) Surface coating drying ovens. 4. Grain, metal, or mineral extrusion process. 7. Equipment used exclusively for sintering of glass or metals, but not exempting equipment used for sintering metal-bearing ores, metal scale, clay, fly ash, or metal compounds. 8. Equipment for the minig and screening of uncrushed native sand and gravel. (aa) Parts washers and rinse tanks using detergent cleaners. (bb) Aluminum die-casting machines. (gg) Air separation plants (jj) Passive methane venting suystems from non-hazardous waste landfills. (kk) Coating applications with perperly designed and operated particulate control deviced and venting systems that employ less than five gallons of only air=dried coating material in anay one day provided that teh applications are: {See rule for criteria} (ll) Refrigerant reclaimin and cecycling machines located at motor vehicle repair facilities (oo) 2-stroke or 4-stroke, air-cooled, gasoline-powered engines no more than 20 horsepower used for lawn mowers, small electric generators, compressors, pumpss, minibikes, snowthrowers, garden tractors or other similar uses. (pp) Non-road engines, subject to the following provisos" {see rule text for criteria} (3)(A)2.R. The following quarries, mineral processing, and biomass facilities: (I) Drilling or blasting activities; (II) Concrete or aggregate product mixers or pug mills with a maximum rated capacity of less than fifteen (15) cubic yards per hour; (III) Riprap production processes consisting only of a grizzly feeder, conveyors, and storage, not including additional hauling activities associated with riprap production; (IV) Sources at biomass recycling, composting, landfill, publicly owned treatment works (POTW), or related facilities specializing in the operation of, but not limited to tub grinders powered by a motor with a maximum output rating of ten (10) horsepower, hoggers and shredders and similarequipment powered by a motor with a maximum output rating of twentyfive (25) horsepower, and other sources at such facilities with a total throughput less than five hundred (500) tons per year; and (V) Land farming of soils contaminated only with petroleum fuel products where the farming beds are located a minimum of three hundred feet (300') from the property boundaryPage 82 of 110

A B 

## WAC 173-400(4) de minimis emission **units** M N O 

## Georgia 391-3-1-.03(6) **Ohio Statewide Rule 9745-31-03(A)(1) Permit to install exemptions**  **Missouri, 10 CSR 10-6-.061 Constructin Permit Exemptions** 

(h) Industrial Operations. 10. Electrostatic powder coating booths with an apropriately designed and operated particulate control system. 13. Equipment used for compression, molding and injection of plastics. 14. Wood products operations in the following SIC categories (combustion equipment and coatings operations are not included in this exemption): (i) 2426 Dimensional Hardwood Lumber Mills (ii) 2431 Lumber Millwork [391-3-1-.03] - 8 (iii) 2434 Wood Kitchen Cabinets (iv) 2439 Structural Wood Trusses (v) 2441 Wood Boxes (vi) 2448 Wood Pallets (vii) 2449 Wood Containers (viii) 2499 Miscellaneous Wood Products 15. Industrial process equipment used exclusively for educational purposes at educational institutions. (2) Federal based exemptions. The following exemption applies regardless of the applicability of the "National Emissions Standards for Hazardous Air Pollutants" and/or the "New Source Performance Standards". (a) Cleanup activities associated with the removal or remedial action conducted entirely on site, where such remedial action is selected and carried out in compliance with the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) section 121(e) and where such action meets all applicable air pollution emission limits and policies. (3)(A)2.S. The following kilns and ovens: (I) Kilns with a firing capacity of less than ten (10) million Btus per hour used for firing ceramic ware, heated exclusively by natural gas, liquefied petroleum gas, electricity, or any combination thereof; and (II) Electric ovens or kilns used exclusively for curing or heat-treating provided no hazardous air pollutants (HAPs) or VOCs are emitted; T. The following food and agricultural equipment: (I) Any equipment used in agricultural operations to grow crops; (II) Equipment used exclusively to slaughter animals. This exemption does not apply to other slaughterhouse equipment such as rendering cookers, boilers, heating plants, incinerators, and electrical power generating equipment; (IV) Equipment used exclusively to grind, blend, package, or store tea, cocoa, spices or coffee; (V) Equipment with the potential to dry, mill, blend, grind, or package less than one thousand (1,000) pounds per year of dry food products such as seeds, grains, corn, meal, flour, sugar, and starch; (VI) Equipment with the potential to convey, transfer, clean, or separate less than one thousand (1,000) tons per year of dry food products or waste from food production operations; (VII) Storage equipment or facilities containing dry food products that are not vented to the outside atmosphere or which have the potential to handle less than one thousand (1,000) tons per year; (VIII) Coffee, cocoa, and nut roasters with a roasting capacity of less than fifteen (15) pounds of beans or nuts per hour, and any stoners or coolers operated with these roasters; (IX) Containers, reservoirs, tanks, or loading equipment used exclusively for the storage or loading of beer, wine, or other alcoholic beverages produced (3)(A)2. U. Batch solvent recycling equipment provided the recovered solvent is used primarily on-site, the maximum heat input is less than one (1) million Btus per hour, the batch capacity is less than one hundred fifty (150) gallons, and there are no solvent vapor leaks from the equipment which exceed five hundred (500) parts per million; V. The following surface coating and printing operations: (I) Batch mixing of inks, coatings, or paints provided good housekeeping is practiced, spills are cleaned up as soon as possible, equipment is maintained according to manufacturer’s instruction and property is kept clean. In addition, all waste inks, coating, and paints shall be disposed of properly. Prior to disposal all liquid waste shall be stored in covered container. This exemption does not apply to ink, coatings, or paint manufacturing facilities; (III) Any surface-coating source that employs solely non-refillable handheld aerosol cans; and (IV) Surface coating operations utilizing powder coating materials with the powder applied by an electrostatic powder spray gun or an electrostatic fluidized bedPage 83 of 110

A B 

## WAC 173-400(4) de minimis emission **units** M N O 

## Georgia 391-3-1-.03(6) **Ohio Statewide Rule 9745-31-03(A)(1) Permit to install exemptions**  **Missouri, 10 CSR 10-6-.061 Constructin Permit Exemptions** 

(3)(A)2. W. The following metal working and handling equipment: (I) Carbon dioxide (CO2) lasers, used only on metals and other materials that do not emit a HAP or VOC in the process; (II) Laser trimmers equipped with dust collection attachments; (III) Equipment used for pressing or storing sawdust, wood chips, or wood shavings; (IV) Equipment used exclusively to mill or grind coatings and molding compounds in a paste form provided the solution contains less than one percent (1%) VOC by weight; (V) Tumblers used for cleaning or deburring metal products without abrasive blasting; (VI) Batch mixers with a rated capacity of fifty-five (55) gallons or less provided the process will not emit hazardous air pollutants; (VII) Equipment used exclusively for the mixing and blending of materials at ambient temperature to make water-based adhesives provided the process will not emit hazardous air pollutants; (VIII) Equipment used exclusively for the packaging of lubricants or greases; (IX) Platen presses used for laminating provided the process will not emit hazardous air pollutants; (X) Roll mills or calendars for rubber or plastics provided the process will not emit hazardous air pollutants; (XI) Equipment used exclusively for the melting and applying of wax containing less than one percent (1%) VOC by weight; (XII) Equipment used exclusively for the conveying and storing of plastic pellets; and (XIII) Solid waste transfer stations that receive or load out less than fifty (50) tons per day of nonhazardous solid waste (3)(A)2. Y.(II) Batch loading and unloading of solid phase catalysts; Z. Body repair and refinishing of motorcycle, passenger car, van, light truck and heavy truck and other vehicle body parts, bodies, and cabs, provided— {See rule for criteria} (3)(A)(2).AA. Sawmills processing no more than twenty-five (25) million board feet, green lumber tally of wood per year, in which no mechanical drying of lumber is performed, in which fine particle emissions are controlled through the use of properly engineered baghouses or cyclones, and which meet all of the following provisions: (I) The mill shall be located at least five hundred feet (500') from any recreational area, school, residence, or other structure not occupied or used solely by the owner of the facility or the owner of the property upon which the installation is located; (II) All sawmill residues (sawdust, shavings, chips, bark) from debarking, planing, saw areas, etc., shall be removed or contained to minimize fugitive particulate emissions. Spillage of wood residues shall be cleaned up as soon as possible and contained such that dust emissions from wind erosion and/or vehicle traffic are minimized. Disposal of collected sawmill residues must be accomplished in a manner that minimizes residues becoming airborne. Disposal by means of burning is prohibited unless it is conducted in a permitted incinerator; and (III) All open-bodied vehicles transporting sawmill residues (sawdust, shavings, chips, bark) shall be covered with a tarp to achieve maximum control of particulate emissions;Page 84 of 110

A B 

## WAC 173-400(4) de minimis emission **units** M N O 

## Georgia 391-3-1-.03(6) **Ohio Statewide Rule 9745-31-03(A)(1) Permit to install exemptions**  **Missouri, 10 CSR 10-6-.061 Constructin Permit Exemptions** 

(3)(A)2. DD. Carving, cutting, routing, turning, drilling, machining, sawing, sanding, planing, buffing, or polishing solid materials, other than materials containing any asbestos,beryllium or lead greater than one percent (1%) by weight as determined by Material Safety Data Sheets (MSDS), vendor material specifications and/or purchase order specifications, where equipment— (I) Directs a stream of liquid at the point where material is processed; (II) Is used only for maintenance or support activity not conducted as part of the installation’s primary business activity; (III) Is exhausted inside a building; or (IV) Is ventilated externally to an operating cyclonic inertial separator (cyclone), baghouse, or dry media filter. Other particulate control devices such as electrostatic precipitators or scrubbers are subject to construction permitting or a permit-by-rule, unless otherwise exempted.

(3)(B)1. Routine maintenance, parts replacement or relocation of emission units within the same installation which do not involve either any appreciable change either in the quality or nature, or any increase in either the potential to emit or the effect on air quality, of the emissions of any air contaminant. Some examples are as follows: A. Replacing the bags in a baghouse; B. Replacing wires, plates, rappers, controls or electric circuitry in an electrostatic precipitator which does not measurably decrease the design efficiency of the unit; C. Replacement of fans, pumps or motors which does not alter the operation of a source or performance of a control device; D. Replacement of boiler tubes; E. Replacement of piping, hoods, and ductwork; and F. Replacement of engines, compressors or turbines as part of a normal maintenance program;Page 85 of 110

A B 

## WAC 173-400(4) de minimis emission **units** M N O 

## Georgia 391-3-1-.03(6) **Ohio Statewide Rule 9745-31-03(A)(1) Permit to install exemptions**  **Missouri, 10 CSR 10-6-.061 Constructin Permit Exemptions** 

(3)(B)2. Changes in a process or process equipment which do not involve installing, constructing or reconstructing an emissions unit or associated air cleaning devices, and that do not involve either any appreciable change either in the quality or nature, or any increase in either the potential to emit orthe effect on air quality of the emissions of any air contaminant. Some examples are as follows: A. Change in supplier or formulation of similar raw materials, fuels, paints and other coatings; B. Change in the sequence of the process; C. Change in the method of raw material addition; D. Change in the method of product packaging; E. Change in the process operating parameters; F. Replacement of an identical or more efficient cyclone precleaner which is used as a precleaner in a fabric filter control system; G. Installation of a floating roof on an open top petroleum storage tank; H. Replacement of a fuel burner in a boiler with a more thermally efficient burner; I. Lengthening a paint drying oven to provide additional curing time; and J. Changes in the location, within the storage area, or configuration of a material storage pile or material handling equipment

(3)(B) 3. Replacement of like-kind emission units that do not involve either any appreciable change either in the quality or nature, or any increase either in the potential to emit or the effect on air quality, of the emissions of any air contaminant; 4. The exempt activities in paragraphs (3)(B)1.–3. of this rule reflect a presumption that existing emission units which are changed or replaced by like-kind units shall be treated as having begun normal operation for purposes of the definition of actual emissions in 10 CSR 10-6.020; 5. The following miscellaneous activities: B. Batteries and battery charging stations; E. Steam emissions from leaks, safety relief valves, steam cleaning operations, and steam sterilizers; andPage 86 of 110

A B 

## WAC 173-400(4) de minimis emission **units** M N O 

## Georgia 391-3-1-.03(6) **Ohio Statewide Rule 9745-31-03(A)(1) Permit to install exemptions**  **Missouri, 10 CSR 10-6-.061 Constructin Permit Exemptions** Page 87 of 110

A B 

## WAC 173-400(4) de minimis emission **units** M N O 

## Georgia 391-3-1-.03(6) **Ohio Statewide Rule 9745-31-03(A)(1) Permit to install exemptions**  **Missouri, 10 CSR 10-6-.061 Constructin Permit Exemptions** Page 88 of 110

A B 

## WAC 173-400(4) de minimis emission **units** M N O 

## Georgia 391-3-1-.03(6) **Ohio Statewide Rule 9745-31-03(A)(1) Permit to install exemptions**  **Missouri, 10 CSR 10-6-.061 Constructin Permit Exemptions** Page 89 of 110

A B

(a) Maintenance/construction:

(i) Cleaning and sweeping of streets and paved surfaces; (ii) Concrete application, and installation;

(iii) Dredging wet spoils handling and placement;

(iv) Paving application and maintenance. This provision does not exempt asphalt plants from this chapter; 

# Ap**pendix E: Comparison of emission units and rates exempt from permitting in Washington,some other states, and the EPA Tribal NSR rule.** 

**WAC 173-400(4) de minimis emission units**  P Q R



## North Carolina SUBCHAPTER 2Q AIR QUALITY PERMITS **SECTION NCAC 2Q.0100 GENERAL PROVISIONS Title 129 - Nebraska Air Quality Regulations**  **Chapter 17 - CONSTRUCTION PERMITS - WHEN REQUIRED EPA Tribal Air Rule at 40 CFR 49.153(b)(3)** 

.0101 REQUIRED AIR QUALITY PERMITS (a) No owner or operator shall do any of the following activities, that is not otherwise exempted, without first applying for and obtaining an air quality permit: (2) construct, operate, or modify a facility that has the potential to emit at least 10 tons per year of any hazardous air pollutant or 25 tons per year of all hazardous air pollutants combined or that are subject to requirement established under the following sections of the federal Clean Air Act: (A) Section 112(d), emissions standards; (B) Section 112(f), standards to protect public health and the environment; (C) Section 119(g), construction and reconstruction; (D) Section 112(h), work practice standards and other requirements; (E) Section 112(i)(5), early reduction; (F) Section 112(.i), federal failure to promulgate standards; (G) Section 112(r), accidental releases; or 014 Any source not required to obtain a construction permit pursuant to 001 may request a construction permit to be issued in the manner prescribed by 002 through 013 for the following purposes: 014.01 Establishing enforceable limits to avoid otherwise applicable requirements under the provisions of Title 129. 014.02 Revising existing construction permits to incorporate significant permit revisions as defined in Chapter 15. 014.03 Establishing a PAL pursuant to the provisions of Chapter 19 of Title 129. The construction permit used to establish a PAL must include the information and conditions listed in Chapter 19, section 011.06. 014.04 Establishing a Best Available Retrofit Technology (BART) permit or other permit required to reduce visibility impairment in a Class I Federal area pursuant to the provisions of Chapter 43

.0102 ACTIVITIES EXEMPTED FROM PERMIT REQUIREMENTS (a) This Rule does not apply to facilities required to have a permit under Section .0500 of this Subchapter. This rule applies only to permits issued under Section .0300 of this Subchapter. 001.02 When determining applicability under 001.01 above, sources in the following source categories must include fugitive emissions:

(c) The following activities do not need a permit or permit modification under this Section .0300 of this Subchapter; however, the Director may require the owner or operator of these activities to register them under
15A NCAC 20 .0200: 001.02A Coal cleaning plants (with thermal dryers);

001.02B Kraft pulp mills;

001.02C Portland cement plants;

001.02D Primary zinc smelters;

001.02E Iron and steel mills;

(c)(1) (A)(v) paving parking lots 001.02F Primary aluminum ore reduction plants; (b) How do I determine the increase in allowable emissions from a physical or operational change at my source? Determine the resulting increase in allowable emissions in tons per year (tpy) of each regulated NSR pollutant after considering all increases from the change. A physical or operational change may involve one or more emissions units. The total increase in allowable emissions resulting from your proposed change, including fugitive emissions, to the extent they are quantifiable, only if your source belongs to one of the source categories listed pursuant to section 302(j) of the Act, would be the sum of the following: (1) For each new emissions unit that is to be added, the emissions increase would be the potential to emit of the emissions unit. (2) For each emissions unit with an allowable emissions limit that is to be changed or replaced, the emissions increase would be the allowable emissions of the emissions unit after the change or replacement minus the allowable emissions prior to the change or replacement. However, this may not be a negative value. If the allowable emissions of an emissions unit would be reduced as a result of the change or replacement, use zero in the calculation. (3) For each unpermitted emissions unit (a unit without any enforceable permit conditions) that is to be changed or replaced, the emissions increase is the allowable emissions of the emissions unit after the change or replacement minus the potential to emit prior to the change or replacement. However, this may not be a negative value. If an emissions unit's post-change allowable emissions would be less than its pre-change potential to emit, use zero in the calculation. (c) What emissions units and activities are exempt from this program? This program does not apply to the following emissions units and activities at a source that are listed in paragraphs (c)(1) through (7) of this section. (1) Mobile sources. (2) Ventilating units for comfort that do not exhaust air pollutants into the ambient air from any manufacturing or other industrial processes (3) Noncommercial food preparation. (4) Consumer use of office equipment and products. (5) Janitorial services and consumer use of janitorial products. (6) Internal combustion engines used for landscaping purposes. (7) Bench scale laboratory activities, except for laboratory fume hoods or
vents.Page 90 of 110

A B 

## WAC 173-400(4) de minimis emission **units**

(v) Plant maintenance and upkeep

activities (grounds keeping, general repairs, house keeping, plant painting, welding, cutting, brazing, soldering, plumbing, retarring roofs, etc.);

(vi) Plumbing installation, plumbing protective coating application and maintenance activities; P Q R 

## North Carolina SUBCHAPTER 2Q AIR QUALITY PERMITS **SECTION NCAC 2Q.0100 GENERAL PROVISIONS Title 129 - Nebraska Air Quality Regulations**  **Chapter 17 - CONSTRUCTION PERMITS - WHEN REQUIRED EPA Tribal Air Rule at 40 CFR 49.153(b)(3)** 

(b) How do I determine the increase in allowable emissions from a physical (c)(1) activities exempted because of category: (A) maintenance, upkeep, and replacement: (i) maintenance, structural changes, or repairs which do not change the capacity of such process, fuel burning, refuse-burning, or control equipment, and do not involve any change in quality or nature or increase in quantity of emission of regulated air pollutants; (ii) housekeeping activities or building maintenance procedures, including painting buildings, resurfacing floors, roof repair, washing, portable vacuum cleaners, sweeping, use and associated storage of janitorial products, or insulation removal 001.02G Primary copper smelters;

001.02H Municipal incinerators capable of charging more than 250 tons of refuse per day;

001.02I Hydrofluoric, sulfuric, or nitric acid plants;Page 91 of 110

A B 

## WAC 173-400(4) de minimis emission **units**

(vii) Roofing application and

maintenance;

(viii) Insulation application and maintenance; (ix) Janitorial services and consumer use of janitorial products;

(x) Construction activities that do not result in new or modified stationary sources or portable stationary sources.

(b) Storage tanks:

(i) Lubricating oil storage tanks. This provision does not exempt wholesale distributors of lubricating oils from this chapter; (ii) Polymer tanks and storage devices and associated pumping and handling equipment, used for solids dewatering and flocculation; P Q R 

## North Carolina SUBCHAPTER 2Q AIR QUALITY PERMITS **SECTION NCAC 2Q.0100 GENERAL PROVISIONS Title 129 - Nebraska Air Quality Regulations**  **Chapter 17 - CONSTRUCTION PERMITS - WHEN REQUIRED EPA Tribal Air Rule at 40 CFR 49.153(b)(3)** 

(b) How do I determine the increase in allowable emissions from a physical 001.02J Petroleum refineries;

001.02K Lime plants;

001.02L Phosphate rock processing plants;

(c)(1) (A)(i) maintenance, structural changes, or repairs which do not change the capacity of such process, fuel burning, refuse-burning, or control equipment, and do not involve any change in quality or nature or increase in quantity of emission of regulated air pollutants; 001.02M Coke oven batteries;

001.02N Sulfur recovery plants;

001.02O Carbon black plants (furnace process);

(c)(1)(D) (i) storage tanks used solely to store fuel oils, kerosene, diesel. crude oil, used motor oil, lubricants, cooling oils, natural gas or liquefied petroleum gas; 001.02P Primary lead smelters;

001.02Q Fuel conversion plants;Page 92 of 110

A B 

## WAC 173-400(4) de minimis emission **units**

(iii) Storage tanks, reservoirs, pumping

and handling equipment of any size containing soaps, vegetable oil, grease, animal fat, and nonvolatile aqueous salt solutions;

(iv) Process and white water storage tanks; (v) Operation, loading and unloading of storage tanks and storage vessels, with lids or other appropriate closure and less than 260-gallon capacity (35 cubic feet);

(vi) Operation, loading and unloading of storage tanks,≤ 1100 gallon capacity, with lids or other appropriate closure, not for use with materials containing toxic air pollutants, as listed in chapter 173-460 WAC, max. VP 550 mm mercury at 21°C;

(vii) Operation, loading and unloading storage of butane, propane, or liquefied petroleum gas with a vessel capacity less than 40,000 gallons;

(viii) Tanks, vessels and pumping equipment, with lids or other appropriate closure for storage or dispensing of aqueous solutions of inorganic salts, bases and acids. P Q R 

## North Carolina SUBCHAPTER 2Q AIR QUALITY PERMITS **SECTION NCAC 2Q.0100 GENERAL PROVISIONS Title 129 - Nebraska Air Quality Regulations**  **Chapter 17 - CONSTRUCTION PERMITS - WHEN REQUIRED EPA Tribal Air Rule at 40 CFR 49.153(b)(3)** 

(b) How do I determine the increase in allowable emissions from a physical petroleum gas; 001.02R Sintering plants;

001.02S Secondary metal production plants;

001.02T (Not EPA approved);

(c)(2(A)(i) above-ground storage tanks with a storage capacity of no more than 1100 gallons storing organic liquids, with a true vapor pressure of no more than 10.8 pounds per square inch absolute at 70OF; or (ii) underground storage tanks with a storage capacity of no more than 2500 gallons storing organic liquids, with a true vapor pressure of no more than 10.8 psi absolute at 70'F; (c)(1)(D) (i) storage tanks used solely to store fuel oils, kerosene, diesel. crude oil, used motor oil, lubricants, cooling oils, natural gas or liquefied petroleum gas; (ii) storage tanks used to store gasoline for which there are no applicable requirements except Stage I controls under 15A NCAC 2D .0928; (iii) storage tanks used solely to store inorganic liquids; or (iv) storage tanks or vessels used for the temporary containment of materials resulting from an emergency response to an unanticipated release of hazardous materials; 001.02U Fossil-fuel boilers (or combination thereof) totaling more than 250 million British thermal units per hours heat input;

001.02V Petroleum storage and transfer units with a total storage capacity exceeding 300,000 barrels;

(c)(1)(D)(iii) storage tanks used solely to store inorganic liquids; 001.02W Taconite ore processing plants;Page 93 of 110

A B 

## WAC 173-400(4) de minimis emission **units**

(i)≤ 500,000 Btu/hr using coal with ≤

0.5% sulfur or other solid fuels with≤ 0.5% sulfur;

(ii)≤ 500,000 Btu/hr using used oil, per the requirements of RCW 70.94.610;

(iii)≤ 400,000 Btu/hr using wood waste
or paper;

(iv)≤ 1,000,000 Btu/hr using gasoline, kerosene, #1, or #2 fuel oil and with≤0.05% sulfur; (c) New or modified emission units with combined aggregate heat inputs to combustion units (excluding emergency engines exempted by subsection (4)(h)(xxxix) of this section), less than or equal to all of the following, as applicable: P Q R 

## North Carolina SUBCHAPTER 2Q AIR QUALITY PERMITS **SECTION NCAC 2Q.0100 GENERAL PROVISIONS Title 129 - Nebraska Air Quality Regulations**  **Chapter 17 - CONSTRUCTION PERMITS - WHEN REQUIRED EPA Tribal Air Rule at 40 CFR 49.153(b)(3)** 

(b) How do I determine the increase in allowable emissions from a physical (c)(1)(D)(iv) storage tanks or vessels used for the temporary containment of materials resulting from an emergency response to an unanticipated release of hazardous materials; 001.02X Glass fiber processing plants;

001.02Y Charcoal production plants;

001.02Z Fossil fuel-fired steam electric plants of more than 250 million British thermal units per hour heat input;

001.02AA Any other stationary source category which is being regulated by a standard promulgated under Section 111 or 112 of the Act as of August 7,
1980.

(c)(2)(B) (v) space heaters burning waste oil if: (i) The heater burns only oil that the owner or operator generates or used oil from do-It-yourself oil changers who generate used oil as household wastes; (ii) The heater is designed to have a maximum capacity of not more than 500,000 Btu per hour; and (iii) The combustion gases from the heater are vented to the ambient air;

(c)(2)(B) (i) fuel combustion equipment, except for internal combustion engines, firing exclusively kerosene, No. I fuel oil, No. 2 fuel oil, equivalent unadulterated fuels, or a mixture of these fuels or one or more of these fuels mixed of with natural gas or liquefied petroleum gas with a heat input of less than: (II) 10 million BTU per hour for which construction, modification, or reconstruction commenced after June 9, 1989; or (III) 30 million BTU per hour for which construction, modification, or reconstruction commenced before June 10, 1989;Page 94 of 110

A B 

## WAC 173-400(4) de minimis emission **units**

(v)≤ 4,000,000 Btu/hr using natural gas,

propane, or LPG.

(d) Material handling:

(i) Continuous digester chip feeders;

(ii) Grain elevators not licensed as warehouses or dealers by either the Washington state department of agriculture or the U.S. Department of Agriculture;

(iii) Storage and handling of water based lubricants for metal working where organic content of the lubricant is≤ 10%;

(iv) Equipment used exclusively to pump, load, unload, or store high boiling point organic material in tanks less than one million gallon, material with initial atmospheric boiling point not less than 150°C or vapor pressure not more than 5 mm mercury at 21°C, with lids or other appropriate closure. P Q R 

## North Carolina SUBCHAPTER 2Q AIR QUALITY PERMITS **SECTION NCAC 2Q.0100 GENERAL PROVISIONS Title 129 - Nebraska Air Quality Regulations**  **Chapter 17 - CONSTRUCTION PERMITS - WHEN REQUIRED EPA Tribal Air Rule at 40 CFR 49.153(b)(3)** 

(b) How do I determine the increase in allowable emissions from a physical (c)(2)(B)(iv) fuel combustion equipment, except for internal combustion engines, firing exclusively natural gas or liquefied petroleum gas or a mixture of these fuels with a heat input rating less than 65 million BTU per hour;Page 95 of 110

A B 

## WAC 173-400(4) de minimis emission **units**

(e) Water treatment:

(i) Septic sewer systems, not including active wastewater treatment facilities;

(ii) NPDES permitted ponds and lagoons used solely for the purpose of settling suspended solids and skimming of oil and
grease; (iii) De-aeration (oxygen scavenging) of water where toxic air pollutants as defined in chapter 173-460 WAC are not emitted;

(iv) Process water filtration system and demineralizer vents; (v) Sewer manholes, junction boxes, sumps and lift stations associated with wastewater treatment systems;

(vi) Demineralizer tanks; (vii) Alum tanks; (viii) Clean water condensate tanks.

(f) Environmental chambers and laboratory equipment:

(i) Environmental chambers and humidity chambers using only gases that are not toxic air pollutants listed in chapter 173-460 WAC; (ii) Gas cabinets using only gases that are not toxic air pollutants regulated under chapter 173-460 WAC; (iii) Installation or modification of a single laboratory fume hood; P Q R 

## North Carolina SUBCHAPTER 2Q AIR QUALITY PERMITS **SECTION NCAC 2Q.0100 GENERAL PROVISIONS Title 129 - Nebraska Air Quality Regulations**  **Chapter 17 - CONSTRUCTION PERMITS - WHEN REQUIRED EPA Tribal Air Rule at 40 CFR 49.153(b)(3)** 

(b) How do I determine the increase in allowable emissions from a physical

(C)(1)(F) wastewater treatment processes: industrial wastewater treatment processes or municipal wastewater treatment processes for which there are no applicable requirementsPage 96 of 110

A B 

## WAC 173-400(4) de minimis emission **units**

(iv) Laboratory research,

experimentation, analysis and testing at sources whose primary purpose and activity is research or education. To be exempt, these sources must not engage in the production of products, or in providing commercial services, for sale or exchange for commercial profit except in a de minimis manner. Pilot-plants or pilot scale processes at these sources are not exempt.

(v) Laboratory calibration and maintenance equipment. (g) Monitoring/quality assurance/testing:

(i) Equipment and instrumentation used for quality control/assurance or inspection
purpose;

(ii) Hydraulic and hydrostatic testing equipment; (iii) Sample gathering, preparation and management; (iv) Vents from emission monitors and other analyzers.

(h) Miscellaneous:

(i) Single-family residences and duplexes; P Q R 

## North Carolina SUBCHAPTER 2Q AIR QUALITY PERMITS **SECTION NCAC 2Q.0100 GENERAL PROVISIONS Title 129 - Nebraska Air Quality Regulations**  **Chapter 17 - CONSTRUCTION PERMITS - WHEN REQUIRED EPA Tribal Air Rule at 40 CFR 49.153(b)(3)** 

(b) How do I determine the increase in allowable emissions from a physical (c)(1)(C) laboratory activities: (i) bench-scale, on-site equipment used exclusively for chemical or physical analysis for quality control purposes, staff instruction, water or wastewater analyses, or non-production environmental compliance assessments; (ii) bench-scale experimentation, chemical or physical analyses, training or instruction from not-for-profit, non-production educational laboratories; (iii) bench-scale experimentation, chemical or physical analyses, training ir instruction from hospitals or health laboratories pursuant to the determination or diagnosis of illness; or (iv) research and development laboratory activities provided the activity produces no commercial product or feedstock material;

(c)(1)(J)(v) exit gases from in-line process analyzers

(c)(1)(E) (ii) residential wood stoves, heaters, or fireplaces; (c)(1)(E) (iii) hot water heaters which are used for domestic purposes only and are not used to heat process waterPage 97 of 110

A B 

## WAC 173-400(4) de minimis emission **units**

(ii) Plastic pipe welding;

(iii) Primary agricultural production activities including soil preparation, planting, fertilizing, weed and pest control, and harvesting;

(iv) Comfort air conditioning;

(v) Flares used to indicate danger to the public;

(vi) Natural and forced air vents and stacks for bathroom/toilet activities;

(vii) Personal care activities;

(viii) Recreational fireplaces including the use of barbecues, campfires, and ceremonial fires; (ix) Tobacco smoking rooms and areas;

(x) Noncommercial smokehouses;

(xi) Blacksmith forges for single forges; P Q R 

## North Carolina SUBCHAPTER 2Q AIR QUALITY PERMITS **SECTION NCAC 2Q.0100 GENERAL PROVISIONS Title 129 - Nebraska Air Quality Regulations**  **Chapter 17 - CONSTRUCTION PERMITS - WHEN REQUIRED EPA Tribal Air Rule at 40 CFR 49.153(b)(3)** 

(b) How do I determine the increase in allowable emissions from a physical

(c)(2)(E)(xii) animal operations not required to have control technology under 15A NCAC 2D.1800 ( If an animal operation is required to have control technology, it shall be required to have a permit under this Subchapter).

(c)(1)(B) air conditioning or ventilation: comfort air conditioning or comfort ventilating systems which do not transport, remove, or exhaust regulated air pollutants to the atmosphere; (c)(1)(E) combustion and heat transfer equipment: (i) space heaters burning distillate oil, kerosene, natural gas, or liquefied petroleum gas operating by direct heat transfer and used solely for comfort heat;

(c)(1)(J)(vi) stacks or vents to prevent escape of sewer gases from domestic waste through plumb trapsPage 98 of 110

A B 

## WAC 173-400(4) de minimis emission **units**

(xii) Vehicle maintenance activities, not

including vehicle surface coating;

(xiii) Vehicle or equipment washing (see (c) of this subsection for threshold for boilers); (xiv) Wax application;

(xv) Oxygen, nitrogen, or rare gas extraction and liquefaction equipment not including internal and external combustion equipment; (xvi) Ozone generators and ozonation equipment; (xvii) Solar simulators; (xviii) Ultraviolet curing processes, to the extent that toxic air pollutant gases as defined in chapter 173-460 WAC are not emitted; (xix) Electrical circuit breakers, transformers, or switching equipment installation or operation; (xx) Pulse capacitors; (xxi) Pneumatically operated equipment, including tools and hand held applicator equipment for hot melt adhesives;

(xxii) Fire suppression equipment;

(xxiii) Recovery boiler blow-down tank;

(xxiv) Screw press vents; P Q R 

## North Carolina SUBCHAPTER 2Q AIR QUALITY PERMITS **SECTION NCAC 2Q.0100 GENERAL PROVISIONS Title 129 - Nebraska Air Quality Regulations**  **Chapter 17 - CONSTRUCTION PERMITS - WHEN REQUIRED EPA Tribal Air Rule at 40 CFR 49.153(b)(3)** 

(b) How do I determine the increase in allowable emissions from a physical

(c)(1)(A)(iv) use of fire fighting equipmentPage 99 of 110

A B 

## WAC 173-400(4) de minimis emission **units**

(xxv) Drop hammers or hydraulic presses

for forging or metal working;

(xxvi) Production of foundry sand molds, unheated and using binders less than 0.25% free phenol by sand weight;

(xxvii) Kraft lime mud storage tanks and process vessels;

(xxviii) Lime grits washers, filters and handling;

(xxix) Lime mud filtrate tanks;

(xxx) Lime mud water;

(xxxi) Stock cleaning and pressurized pulp washing down process of the brown stock washer;

(xxxii) Natural gas pressure regulator vents, excluding venting at oil and gas production facilities and transportation marketing facilities; P Q R 

## North Carolina SUBCHAPTER 2Q AIR QUALITY PERMITS **SECTION NCAC 2Q.0100 GENERAL PROVISIONS Title 129 - Nebraska Air Quality Regulations**  **Chapter 17 - CONSTRUCTION PERMITS - WHEN REQUIRED EPA Tribal Air Rule at 40 CFR 49.153(b)(3)** 

(b) How do I determine the increase in allowable emissions from a physicalPage 100 of 110

A B 

## WAC 173-400(4) de minimis emission **units**

(xxxiii) Solvent cleaners less than 10

square feet air-vapor interface with solvent vapor pressure not more than 30 mm mercury at 21°C where no toxic air pollutants as listed under chapter 173-460 WAC are emitted;

(xxxiv) Surface coating, aqueous solution or suspension containing≤ 1% (by weight) VOCs, or≤ 1% (by weight) toxic air pollutants as listed in chapter 173-460 WAC; P Q R 

## North Carolina SUBCHAPTER 2Q AIR QUALITY PERMITS **SECTION NCAC 2Q.0100 GENERAL PROVISIONS Title 129 - Nebraska Air Quality Regulations**  **Chapter 17 - CONSTRUCTION PERMITS - WHEN REQUIRED EPA Tribal Air Rule at 40 CFR 49.153(b)(3)** 

(b) How do I determine the increase in allowable emissions from a physicalPage 101 of 110

A B 

## WAC 173-400(4) de minimis emission **units**

(xxxv) Cleaning and stripping activities

and equipment using solutions having≤ 1% VOCs (by weight) or≤ 1% (by weight) toxic air pollutants. Acid solutions used on metallic substances are not exempt;

(xxxvi) Dip coating operations, using materials less than 1% VOCs (by weight) or ≤ 1% (by weight) toxic air pollutants as listed in chapter 173-460 WAC.

(xxxvii) Abrasive blasting performed inside a booth or hangar designed to capture the blast grit or overspray.

(xxxviii) For structures or items too large to be reasonably handled indoors, abrasive blasting performed outdoors that employs control measures such as curtailment during windy periods and enclosure of the area being blasted with tarps and uses either steel shot or an abrasive containing less than one percent (by mass) which would pass through a No. 200 sieve.

(xxxix) Stationary emergency internal combustion engines with an aggregate brake horsepower that is less than or equal to 500 brake horsepower. P Q R 

## North Carolina SUBCHAPTER 2Q AIR QUALITY PERMITS **SECTION NCAC 2Q.0100 GENERAL PROVISIONS Title 129 - Nebraska Air Quality Regulations**  **Chapter 17 - CONSTRUCTION PERMITS - WHEN REQUIRED EPA Tribal Air Rule at 40 CFR 49.153(b)(3)** 

(b) How do I determine the increase in allowable emissions from a physical

(c)(2)(B)(iv) emergency use generators and other internal combustion engines not regulated by rules adopted under Title II of the federal Clean Air Act, except self-propelled vehicles, that have a rated capacity of no more than: i. 310 kilowatts (electric) or 460 horsepower for natural gas-fired engines,ii. 830 kilowatts (electric) or 1150 horsepower for liquefied petroleum gasfired engines,iii. 270 kilowatts (electric) or 410 horsepower for diesel-fired or kerosenefired engines; or iv. 21 kilowatts (electric) or 31 horsepower for gasoline-fired engines; v. portable generators and other portable equipment with internal combustion engines not regulated by rules adopted under Title II of the federal Clean Air Act, except self propelled vehicles, that operate at the facility no more than a combined 350 hours for any 365-day period provided the generators or engines have a rated capacity of no more than 750 kilowatt (electric) or 1100 horsepower each and provided records are maintained to verify the hours of operation;vi. peak shaving generators that produce no more than 325,000 kilowatthours of electrical energy for any 12-month period provided records are maintained to verify the energy production on a monthly basis and on a 12- month basisPage 102 of 110

A B 

## WAC 173-400(4) de minimis emission **units**

(xl) Gasoline dispensing facilities with

annual gasoline throughputs less than those specified in WAC 173-491-040 (4)(a). Gasoline dispensing facilities subject to chapter 173-491 WAC are exempt from toxic air pollutant analysis pursuant to chapter 173-460 WAC. P Q R 

## North Carolina SUBCHAPTER 2Q AIR QUALITY PERMITS **SECTION NCAC 2Q.0100 GENERAL PROVISIONS Title 129 - Nebraska Air Quality Regulations**  **Chapter 17 - CONSTRUCTION PERMITS - WHEN REQUIRED EPA Tribal Air Rule at 40 CFR 49.153(b)(3)** 

(b) How do I determine the increase in allowable emissions from a physical ((c)(1)(G)gasoline distribution: gasoline service stations or gasoline dispensing facilities; (c)(1)(H)dispensing equipment: equipment used solely to dispense diesel fuel, kerosene, lubricants or cooling oils

A permit is required for: 001.03 Any incinerator used for refuse disposal or for the processing of salvageable materials except refuse incinerators located on residential premises containing five or less dwelling units used only for the disposal of residential waste generated on the said property.

(c)(1)(I) solvent recycling: portable solvent distillation systems used for onsite solvent recycling if: (i) the portable solvent distillation system is not: (I)owned by the facility, and (II)operated at the facility for more than seven consecutive days; and (ii) The material recycled of origin; (J) processes: (i) small electric motor burn-out ovens with secondary combustion chambers or afterburners; (ii) small electric motor bake-on ovens; (iii) burn-off ovens for paint-line hangers with afterburners; (iv) hosiery knitting machines and associated lint screens, hosiery dryers and associated lint screens, and hosiery dyeing processes where bleach or solvent dyes are not used; (v) blade wood planers planning only green wood; (c)(1)(F) solid waste landfills: municipal solid waste landfills (This Part does not apply to flares and other sources of combustion at solid waste landfills); (c)(1)(G)miscellaneous: (i) motor vehicles, aircraft, marine vessels, locomotives, tractors or other selfpropelled vehicles with internal combustion engines; (ii) non-self-propelled non-road engines, except generators, regulated by rules adopted under Title II of the federal Clean Air Act; (iii) equipment used for the preparation of food for direct on-site human consumption; (iv) a source whose emissions are regulated only under Section 112(r) or Title VI of the federal Clean Air Act;

(c)(1)(G) (vii) refrigeration equipment that is consistent with Section 601 through 618 of Title VI (Stratospheric Ozone Protection) of the federal Clean Air Act, 40 CFR Part 82, and any other regulations promulgated by EPA under Title VI for stratospheric ozone protection, except those units used as or in conjunction with air pollution control equipment; (viii) equipment not vented to the outdoor atmosphere with the exception of equipment that emits volatile organic compounds; (ix) equipment that does not emit any regulated air pollutants; (x) facilities subject only to a requirement under 40 CFR Part 63 (This Subpart does not apply when a control device is used to meet a MACT or GACT emission standard.); (xi) sources for which there are no applicable requirementsPage 103 of 110

A B 

## WAC 173-400(4) de minimis emission **units** P Q R 

## North Carolina SUBCHAPTER 2Q AIR QUALITY PERMITS **SECTION NCAC 2Q.0100 GENERAL PROVISIONS Title 129 - Nebraska Air Quality Regulations**  **Chapter 17 - CONSTRUCTION PERMITS - WHEN REQUIRED EPA Tribal Air Rule at 40 CFR 49.153(b)(3)** 

(b) How do I determine the increase in allowable emissions from a physical (C)(2)(D) processes: (i) graphic arts operations, paint spray booths or other painting or coating operations without air pollution control devices (water wash and filters that are an integral part of the paint spray booth are not considered air pollution control devices), and solvent cleaning operations located at a facility whose facility-wide actual emissions of: volatile organic compounds are less than five tons per year (Graphic arts operations, coating operations, and solvent cleaning operations are defined in 15a NCAC 2Q .0803) (ii) sawmills that saw no more than 2,000,000 board feet per year provided only green wood is sawed; (iii) perchloroethylene dry cleaners that emit less than 13,000 pounds of perchloroethylene per year; (iv) electrostatic dry powder coating operations with filters or powder recovery systems including electrostatic dry powder coating operations equipped with curing ovens with a heat input of less than 10,000,000 BTU per hour;

(C)(2)(E) miscellaneous: (i) any source without emissions would not violate any applicable standard and whose potential emissions of particulate, sulfur dioxide, nitrogen oxides, volatile organic compounds, and carbon monoxide before air pollution control devices, i.e., potential uncontrolled emissions, are each no more than five tons per year and whose potential emissions of hazardous air pollutants are below their lesser quantity cutoff except; (I) storage tanks, (II) fuel combustion equipment, (III) space heaters burning waste oil,(IV) generators, excluding emergency generators, or other nonselfpropelled internal combustion engines, (V) bulk gasoline plants, (VI) printing, paint spray booths, or other painting or coating operations, (VII) sawmills, (VIII) perchloroethylene dry cleaners, or (IX) electrostatic dry powder coating operations, provided that the total potential emissions of particulate, sulfur dioxide, nitrogen oxides, volatile organic compounds, and carbon monoxide from the facility are each less than 40 tons per year and the total potential emissions of all hazardous air pollutants are below their lesser quantity cutoff emission rates or provided that the facility has an air quality permit; (ii) any facility whose actual emissions of particulate, sulfur dioxide, nitrogen oxides, volatile organic compounds, or carbon monoxide before air pollution control devices, i.e., uncontrolled emissions, are each less thanPage 104 of 110

A B 

## WAC 173-400(4) de minimis emission **units** P Q R 

## North Carolina SUBCHAPTER 2Q AIR QUALITY PERMITS **SECTION NCAC 2Q.0100 GENERAL PROVISIONS Title 129 - Nebraska Air Quality Regulations**  **Chapter 17 - CONSTRUCTION PERMITS - WHEN REQUIRED EPA Tribal Air Rule at 40 CFR 49.153(b)(3)** 

(b) How do I determine the increase in allowable emissions from a physicalPage 105 of 110

A B 

## WAC 173-400(4) de minimis emission **units** P Q R 

## North Carolina SUBCHAPTER 2Q AIR QUALITY PERMITS **SECTION NCAC 2Q.0100 GENERAL PROVISIONS Title 129 - Nebraska Air Quality Regulations**  **Chapter 17 - CONSTRUCTION PERMITS - WHEN REQUIRED EPA Tribal Air Rule at 40 CFR 49.153(b)(3)** 

(b) How do I determine the increase in allowable emissions from a physicalPage 106 of 110

A B 

## WAC 173-400(4) de minimis emission **units** P Q R 

## North Carolina SUBCHAPTER 2Q AIR QUALITY PERMITS **SECTION NCAC 2Q.0100 GENERAL PROVISIONS Title 129 - Nebraska Air Quality Regulations**  **Chapter 17 - CONSTRUCTION PERMITS - WHEN REQUIRED EPA Tribal Air Rule at 40 CFR 49.153(b)(3)** 

(b) How do I determine the increase in allowable emissions from a physicalPage 107 of 110

A B 

## WAC 173-400(4) de minimis emission **units** P Q R 

## North Carolina SUBCHAPTER 2Q AIR QUALITY PERMITS **SECTION NCAC 2Q.0100 GENERAL PROVISIONS Title 129 - Nebraska Air Quality Regulations**  **Chapter 17 - CONSTRUCTION PERMITS - WHEN REQUIRED EPA Tribal Air Rule at 40 CFR 49.153(b)(3)** 

(b) How do I determine the increase in allowable emissions from a physicalPage 108 of 110

A B 

## WAC 173-400(4) de minimis emission **units** P Q R 

## North Carolina SUBCHAPTER 2Q AIR QUALITY PERMITS **SECTION NCAC 2Q.0100 GENERAL PROVISIONS Title 129 - Nebraska Air Quality Regulations**  **Chapter 17 - CONSTRUCTION PERMITS - WHEN REQUIRED EPA Tribal Air Rule at 40 CFR 49.153(b)(3)** 

(b) How do I determine the increase in allowable emissions from a physicalPage 109 of 110

A B 

## WAC 173-400(4) de minimis emission **units** P Q R 

## North Carolina SUBCHAPTER 2Q AIR QUALITY PERMITS **SECTION NCAC 2Q.0100 GENERAL PROVISIONS Title 129 - Nebraska Air Quality Regulations**  **Chapter 17 - CONSTRUCTION PERMITS - WHEN REQUIRED EPA Tribal Air Rule at 40 CFR 49.153(b)(3)** 

(b) How do I determine the increase in allowable emissions from a physicalPage 110 of 110

A B 

## WAC 173-400(4) de minimis emission **units** P Q R 

## North Carolina SUBCHAPTER 2Q AIR QUALITY PERMITS **SECTION NCAC 2Q.0100 GENERAL PROVISIONS Title 129 - Nebraska Air Quality Regulations**  **Chapter 17 - CONSTRUCTION PERMITS - WHEN REQUIRED EPA Tribal Air Rule at 40 CFR 49.153(b)(3)** 

(b) How do I determine the increase in allowable emissions from a physical

# Virginia De minimis Exemption

**rates**

New source exemption levels by emission
rate. Facilities not covered by subsection B or C of this section with uncontrolled emission rates less than all of the significant emission rates specified below shall be exempt from the requirements of 9 VAC 5- 80-10 pertaining to construction, reconstruction or relocation.

## EMISSION RATES.

Carbon monoxide - 100 tons per year.

Nitrogen dioxide - 40 tons per year.

Sulfur dioxide - 40 tons per year. Particulate matter (PM10) - 15 tons per
year. Volatile organic compounds - 25 tons per
year. Lead - 0.6 ton per year.

## Modified source exemption levels by

emission rate.

Facilities with increases in uncontrolled emission rates less than all of the emission rates specified below shall be exempt from the requirements of 9 VAC 5-80-10 pertaining to modification.

EMISSION RATES.

Carbon monoxide - 100 tons per year. Nitrogen dioxide - 10 tons per year. Sulfur dioxide - 10 tons per year. Particulate matter (PM10) - 10 tons per
year. Volatile organic compounds - 10 tons per year. Lead - 0.6 ton per year.

# Wisconson

## 1,666 lb/month , 12 month average (10 tons/year) of each: PM, Nox, SO2, PM10 and VOC 10

lb/month, 12 month average (0.06 ton/yr) of lead

## (2)(b) PTE for SO2 or CO do not exceed 9.0 lb/hr each ( (39.4 tpy) (c)PTE for PM, Nox

or VOC does not exceed 5.7 lb/hr each (25 tpy) (cm) PTE for PM10 does not exceed 3.4 lb.hr (15 tpy) (cs) PTE for PM2.5 does not exceed 2.2 lb/hr (9.6 tpy) (d) PTE for lead does not exceed 0.13 lb/hr (0.6 tpy)

(f) Hazardous air pollutants based on emission rate, release height tables

# Arkansas, CHAPTER 4: MINOR SOURCE REVIEW

Reg. 19.401 General Applicability

No person shall cause or permit the operation, construction, or modification of a stationary source, whose actual emissions are:

## 40 tons per year or more of carbon monoxide;

25 tons per year or more of nitrogen oxides;

25 tons per year or more of sulfur dioxide;

25 tons per year or more of volatile organic compounds; 10 tons per year or more of PMlo;

0.5 tons per year or more of lead;

1.0 ton per year or more of any single hazardous air pollutant; or

3.0 tons per year or more of any combination of hazardous air pollutants

## without first obtaining a permit from the Department pursuant to

the provisions of this chapter

Reg. 19.407 Permit Amendments

## (C) De Minimis Changes

(1) A proposed change to a facility will be considered De Minimis if:

(a) minimal judgment is required to establish the permit requirements for the change; and

(b) the change will result in a trivial environmental impact.

(2) The environmental impact of a proposed change generally will be considered trivial if the potential emissions fiom the change alone, without taking into account any corresponding emission reductions, will:

## (a) be less than the following amounts:

(i) five (5) tons per year of carbon monoxide, nitrogen dioxide, PMlo, and sulfur dioxide; (ii) twenty (20) tons per year of volatile organic compounds; and

(iii) one-half (0.5) a ton per year of lead; (b) or, result in an air quality impact less than:

# Kansas K.A.R. 28-19-300 CONSTRUCTION PERMITS AND **APPROVALS; APPLICABILITY**

(a) Any person who proposes to construct or modify a stationary source or emissions unit shall obtain a construction permit before commencing such construction or modification if:

## (1) the potential-to-emit of the proposed stationary source or emissions

unit, or the increase in the potential-to-emit resulting from the modification, equals or exceeds the following:

(A) either 25 tons per year of particulate matter or 15 tons per year of PM10, except for any agricultural-related activity, in which case the emission level is 100 tons per year of particulate matter, including but not limited to PM10; (B) 40 tons per year of sulfur dioxide or sulfur trioxide or a combination thereof; (C) 100 tons per year of carbon monoxide; (D) 40 tons per year of volatile organic compounds;

(E) 40 tons per year of oxides of nitrogen; or

(F) 0.6 tons per year of lead or lead compound;

(2) the emissions unit or stationary source is an affected source;

## (3) the emissions unit or stationary source is a major source of hazardous

air pollutants;

(b) Any person who proposes to construct or modify a stationary source or emissions unit who is not required to obtain a construction permit pursuant to K.A.R. 28-19-300(a), shall, before commencing construction or modification of the stationary source or emissions unit, obtain an approval from the department to commence such construction or modification if:

(1) the potential-to-emit of the proposed stationary source or emissions unit, or the increase in the potential-to-emit resulting from the modification, equals or exceeds one or more of the following:

## (A) either 5 pounds per hour of particulate matter or 2 pounds per hour of

PM10, except for any agricultural-related activity in which case the emission level is 5 pounds per hour of particulate matter, including but not limited to PM10;

(B) 2 pounds per hour of sulfur dioxide or sulfur trioxide or a combination thereof;

(C) 50 pounds per 24 hour period of carbon monoxide;

(D) 50 pounds per 24 hour period of volatile organic compounds, except when the stationary source or emissions unit is located in an area designated as a nonattainment area at 40 CFR 81.317 as in effect on July 1, 1989 in which case approval is required if the emission level exceeds either 15 pounds per 24 hour period or 3 pounds per hour;

(E) 50 pounds per 24 hour period of oxides of nitrogen calculated as nitrogen dioxide; or (F) 0.1 pounds per hour of lead or lead compound;

## (2) the secretary or an authorized representative of the secretary

determines any other air contaminant emissions from the emissions unit or stationary source may cause or contribute to air pollution within the state because of its specific chemical or physical nature or because of the quantity discharged and if the department notifies the owner or operator of the emissions unit or stationary source of such determination prior to the commencement of the construction or modification of the emissions unit or stationary source;

(3) the source is not otherwise required to obtain a construction permit pursuant to K.A.R. 28-19-30(a) but is subject to:

# Iowa

i. Construction, modification or alteration to equipment which will not result in a net emissions increase (as defined in 22.5(1)Af@) of more than 1.0 lb/hr of any regulated air pollutant (as defined in 22.100(455B)). Emission reduction achieved through the installation of control equipment, for which a construction permit has not been obtained, does not establish a limit to potential emissions.

## Hazardous air pollutants (as defined in rule 22.100) are

not included in this exemption except for those listed in Table 1. Further, the net emissions rate INCREASE must not equal or exceed the values listed in Table 1.

Table 1

Pollutant Ton/year

Lead 0.6 Asbestos 0.007

Beryllium 0.0004

Vinyl Chloride 1

Fluorides 3

## This exemption is ONLY applicable to vertical discharges

with the exhaust stack height 10 or more feet above the highest building within 50 feet. If a construction permit has been previously issued for the equipment or control equipment, the conditions of the construction permit remain in effect. In order to use this exemption, the facility must comply with the information submission to the department as described above.

w. Small unit exemption.

(1) “Small unit” means any emission unit and associated control (if applicable) that emits less than the following:

## 1. 40 pounds per year of lead and lead compounds

expressed as lead; 2. 5 tons per year of sulfur dioxide; 3. 5 tons per year of nitrogen oxides; 4. 5 tons per year of volatile organic compounds; 5. 5 tons per year of carbon monoxide; 6. 5 tons per year of particulate matter (particulate matter as defined in 40 CFR Part 51.100(pp)); 7. 2.5 tons per year of PM10; or 8. 5 tons per year of hazardous air pollutants (as defined in rule 22.100(455B)). For the purposes of this exemption, “emission unit” means any part or activity of a stationary source that emits or has the potential to emit any pollutant subject to regulation under the Act. This exemption applies to existing and new or modified “small units.” An emission unit that emits hazardous air pollutants (as defined in rule 22.100(455B)) is not eligible for this exemption if the emission unit is required to be reviewed for compliance with 567—subrule 23.1(3), emission standards for hazardous air pollutants (40 CFR 61, NESHAP), or 567—subrule 23.1(4), emission standards for hazardous air pollutants for source categories (40 CFR 63, NESHAP). An emission unit that emits air pollutants that are not regulated air pollutants as defined in rule 22.100(455B) shall not be eligible to use this exemption.

# Georgia 391-3-1-.03(6)

(i) Other 1. Facilities where the combined emissions from all non-exempt source activities [i.e., not listed in 391-3-1-.03(6)(a)-(h)] are below the following for all pollutants: (i) 50 tons per year of carbon monoxide; (ii) 300 pounds per year of lead total; with a 3.0 pound per day maximum emission; (iii) 20 tons per year of particulate matter, PM10, or sulfur dioxide; (iv) 20 tons per year of nitrogen oxides or VOCs except in the counties of Cherokee, Clayton, Cobb, Coweta, DeKalb, Douglas, Fayette, Forsyth, Fulton, Gwinnett, Henry, Paulding, or Rockdale, where less than 5 tons per year of nitrogen oxides or VOCs is exempted; and (v) 2 tons per year total with a 15 pound per day maximum emission of any single hazardous air pollutant and less than 5 tons per year of any combination of hazardous air pollutants.

# Missouri, 10 CSR 10-6-.061 Constructin Permit Exemptions

(3)(A)3.Construction or modifications are exempt from 10 CSR 10-6.060 if they meet the requirements of subparagraphs (3)(A)3.B. of this rule for each hazardous air pollutant and the requirements of subparagraph (3)(A)3.A., (3)(A)3.C. or (3)(A)3.D. of this rule for each criteria pollutant. The director may require review of construction or modifications otherwise exempt under paragraph (3)(A)3. of this rule if the emissions of the proposed construction or modification will appreciably affect air quality or the air quality standards are appreciably exceeded or complaints involving air pollution have been filed in the vicinity of the proposed construction or modification. A. At maximum design capacity the proposed construction or modification shall emit each pollutant at a rate of no more than the amount specified in Table 1.

## NEBRASKA ADMINISTRATIVE CODE Title 129 - Department of **Environmental Quality Chapter 17 - CONSTRUCTION PERMITS - WHEN REQUIRED** 

## 001 No person shall cause the construction, reconstruction, or

modification at any of the following without first having obtained a construction permit from the Department in the manner prescribed by this Chapter: 001.01 Any stationary source or emission unit, such that there is a net increase in potential emissions at the stationary source equal to or exceeding the following levels: 001.01A Fifteen (15) tons/year of PM10 emissions. 001.01B Forty (40) tons/year of sulfur dioxide (SO2) or sulfur trioxide (SO3), or any combination of the two. 001.01C Forty (40) tons/year of oxides of nitrogen (calculated as NO2). 001.01D Forty (40) tons/year of volatile organic compounds (VOC). 001.01E Fifty (50) tons/year of carbon monoxide. 001.01F Six-tenths (0.6) tons/year of lead. 001.01G Two and one-half (2.5) tons/year of any hazardous air pollutant or an aggregate of ten (10) tons/year of any hazardous air pollutants, including all associated fugitive emissions (see Chapter 27, section 003).

# EPA national Tribal Air rule 40 CFR 49.153(b)(3)

**Table 1 to § 49.153—Minor NSR Thresholds a** 

## Minor NSR **Minor NSR**

**thresholds for**  **thresholds for**

**nonattainme nt areas**  **attainment**

**areas (tpy** **) (tpy** **)** Carbon monoxide (CO) 5 10

Nitrogen oxides (NOX

## ) 5b 

## 10

Sulfur dioxide (SO2

## ) 5 10

Volatile Organic Compounds (VOC) 2b 

## 5 **Regulated NSR pollutant**

## PM 5 10

PM10 

## 1 5

PM2.5 

## 0.6 3

Lead 0.1 0.1

## Fluorides NA 1

Sulfuric acid mist NA 2

Hydrogen sulfide (H2

## S) NA 2

Total reduced sulfur (including H2

## S) NA 2

Reduced sulfur compounds (including H2

## S) NA 2

Municipal waste combustor emissions NA 2

## Municipal solid waste landfill emissions (measured as

nonmethane organic compounds) NA 10

b

## In extreme ozone nonattainment areas, section 182(e)(2) of the Act requires any change a

## If part of a Tribe's area of Indian country is designated as attainment and another part as