118.01.19 App. A. Insignificant Activities List
AR ADC 118.01.19 App. AArkansas Administrative CodeEffective: May 6, 2022
Effective: May 6, 2022
Ark. Admin. Code 118.01.19 App. A
Formerly cited as AR ADC 014.01.1 App. A
118.01.19 App. A. Insignificant Activities List
The following types of activities or emissions are deemed insignificant on the basis of size, emission rate, production rate, or activity. Certain of these listed activities include qualifying statements intended to exclude many similar activities. By such listing, the Division exempts certain sources or types of sources from the requirements to obtain a permit or plan under this rule. Listing in this part has no effect on any other law to which the activity may be subject. Any activity for which a state or federal applicable requirement applies (such as a new source performance standard, a national emission standard for hazardous air pollutants, or maximum achievable control technology) is not insignificant, even if this activity meets the criteria below.
Group A
The following emission units, operations, or activities must either be listed as insignificant or included in the permit application as sources to be permitted. The ton-per-year applicability levels are for all sources listed in the categories (i.e., cumulative total).
1. Fuel burning equipment with a design rate less than ten (10) MMBtu per hour, provided that the aggregate air pollutant specific emissions from all such units listed as insignificant do not exceed five (5) tons per year of any combination of hazardous air pollutants, and ten (10) tons per year of any other air pollutant.
2. Storage tanks less than or equal to two hundred fifty (250) gallons storing organic liquids having a true vapor pressure less than or equal to three and one-half (3.5) pounds-force per square inch absolute, provided that the aggregate air pollutant specific emissions from all such liquid storage tanks listed as insignificant do not exceed five (5) tons per year of any combination of hazardous air pollutants and ten (10) tons per year of any other air pollutant.
3. Storage tanks less than or equal to ten thousand (10,000) gallons storing organic liquids having a true vapor pressure less than or equal to one-half (0.5) pounds-force per square inch absolute, provided that the aggregate air pollutant specific emissions from all such liquid storage tanks listed as insignificant do not exceed five (5) tons per year of any combination of hazardous air pollutants and ten (10) tons per year of any other air pollutant.
5. Emissions from laboratory equipment/vents used exclusively for routine chemical or physical analysis for quality control or environmental monitoring purposes provided that the aggregate air pollutant specific emissions from all such equipment/vents considered insignificant do not exceed five (5) tons per year of any combination of hazardous air pollutants and ten (10) tons per year of any other air pollutant.
10. Non-production equipment approved by the Division, used for waste treatability studies or other pollution prevention programs provided that the emissions are less than ten (10) tons per year of any air pollutant regulated under this rule or less than two (2) tons per year of a single hazardous air pollutant or five (5) tons per year of any combination of hazardous air pollutants. [FN1]
11. Operation of groundwater remediation wells, including emissions from the pumps and collection activities provided that the emissions are less than ten (10) tons per year of any air pollutant regulated under this rule or less than two (2) tons per year of a single hazardous air pollutant or five (5) tons per year of any combination of hazardous air pollutants. This does not include emissions from air-stripping or storage.
12. 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 ninety (90) days a year. This does not apply to generators that provide electricity to the distribution grid.
13. Other activities for which the facility demonstrates that no enforceable permit conditions are necessary to ensure compliance with any applicable law or rule provided that the emissions are less than one (1) ton per year of a single hazardous air pollutant or two and one-half (2.5) tons per year of any combination of hazardous air pollutants, or five (5) tons per year of any other air pollutant regulated under this rule. These emission limits apply to the sum of all activities listed under this group.
Group B
The following emission units, operations, or activities need not be included in a permit application:
1. Combustion emissions from propulsion of mobile sources and emissions from refueling these sources unless regulated by Title II and required to obtain a permit under Title V of the 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.
14. Repair, up-keep, maintenance, or construction activities not related to the source's 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 cutting. [FN2]
Credits
Amended July 18, 2009; July 29, 2012; Dec. 8, 2012; July 27, 2013; March 14, 2016; Aug. 6, 2020; May 6, 2022.
The treatability study or pollution prevention program must be approved separately. The activity creating the emissions must also be determined to be insignificant as discussed in the introduction to this group.
Cleaning and painting activities qualify if they are not subject to volatile organic compounds or hazardous air pollutant control requirements. Asphalt batch plant owners/operators must get a permit.
“Moved by hand” means that it can be moved by one person without assistance of any motorized or non-motorized vehicle, conveyance, or device.
Brazing, soldering, and welding equipment, and cutting torches related to manufacturing and construction activities that emit hazardous air pollutant metals are more appropriate for treatment as insignificant activities based on size or production thresholds. Brazing, soldering, and welding equipment, and cutting torches related directly to plant maintenance and upkeep and repair or maintenance shop activities that emit hazardous air pollutant metals are treated as trivial and listed separately in this appendix.
Exemptions for storage tanks containing petroleum liquids or other volatile organic liquids are based on size and limits including storage tank capacity and vapor pressure of liquids stored and are not appropriate for this list.
Current with amendments received through February 15, 2024. Some sections may be more current, see credit for details.
Ark. Admin. Code 118.01.19 App. A, AR ADC 118.01.19 App. A
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