Outdated Standard Exemptions 108 - 115, April 5, 1995
108. Portable pipe reactor facilities used to process liquid fertilizer that operate according to the following conditions:
(a) Before construction begins, the facility shall be registered with Texas Natural Resource Conservation Commission Office of Air Quality in Austin using Form PI-7.
(b) All valves, piping, flanges, hoses, and disconnects must be free of leaks.
(c) Opacity from any process vent shall not exceed 20% except for those periods of start-up described in 30 TAC 111.111(a)(1)(E).
(d) Emissions from the facility shall not cause or contribute to a condition of air pollution as defined in the Texas Health and Safety Code, 382.003(3).
109. Any facility where animals or poultry are slaughtered and prepared for human consumption provided that waste products such as blood, offal, and feathers are stored in such a manner as to prevent the creation of a nuisance condition and these waste products are removed from the premises daily or stored under refrigeration until removed. In addition, areas used to hold animals or poultry for slaughter shall be kept dry and clean to control odors.
110. Municipal solid waste landfills and waste transfer stations operating in compliance with the Texas Solid Waste Disposal Act.
111. A facility which replaces an existing facility provided that the following conditions are satisfied:
(a) The replacement facility functions in the same or similar manner as the facility to be replaced.
(b) The emissions from the replacement facility are not more than nor have different characteristics than those from the facility to be replaced.
(c) The emissions from the replacement facility will not exceed 25 tons per year of any air contaminant.
(d) The physical location of the replacement facility is the same or immediately adjacent to the facility being replaced.
(e) There will be no increase in capacity, production rate, or throughput as a result of the replacement.
(f) Notwithstanding the provisions of (c) above, the emissions from the replacement facility will not contain any compounds (other than carbon monoxide, nitrogen oxide, or sulfur dioxide) listed or proposed to be listed as hazardous constituents in 40 Code of Federal Regulations 261, Appendix VIII.
(g) Notification of the replacement is provided to the Executive Director within 10 days following installation of the replacement facility.
112. Railcar or truck unloading of wet sand, gravel, aggregate, coal, lignite, and scrap iron or scrap steel (but not including metal ores, metal oxides, battery parts, or fine dry materials) into trucks or other railcars for transportation to other locations, provided the following conditions are met:
(a) Bulk materials shall not be stored on-site.
(b) Water sprays or the equivalent must be installed and used as necessary at material handling operations to achieve maximum control of dust emissions.
(c) All permanent in-plant roads and vehicle work areas shall be watered, treated with dust-suppressant chemicals, oiled, or paved and cleaned as necessary to achieve maximum control of dust emissions.
113. Facilities using thermoset resins (including, but not limited to, polyester resins) to manufacture or repair products, provided that the following conditions are satisfied for (a) and either (b) or (c):
(a) The following requirements shall apply to all thermoset resin facilities:
(1) Before construction begins, the owner or operator shall file with the Texas Natural Resource Conservation Commission (TNRCC) Office of Air Quality in Austin a completed Form PI-7 and supporting documentation demonstrating that all of the requirements of this exemption will be met. A copy of the registration form and all supporting documents shall be sent to the appropriate Regional Office and any local air pollution program having jurisdiction.
(2) The owner or operator of this facility shall keep records of resin and acetone usage in pounds on a monthly and calendar year-to-date basis, and shall maintain these records on a calendar year basis with a two-year rolling retention period. This information shall be in sufficient detail to demonstrate compliance with part (b) or (c) as follows, and shall be made available at the request of personnel from the TNRCC or any local air pollution control agency having jurisdiction.
(3) All resin fabrication and cleaning operations shall be conducted during daylight hours. The exhaust fan(s) must be operating during and for at least 30 minutes after any usage of resin and/or cleaning solvents.
(b) The following requirements shall apply to facilities that have spraying operations (the facilities may include non-spraying operations):
(1) No more than 75 tons of resin and gelcoat combined and 0.75 tons of acetone shall be used per year (gross usage minus waste disposal).
(2) All solid trim grinding operations shall be vented through a dry filter system or a water wash system which has a particulate removal efficiency of at least 95%. Particulates trapped in the dry filter system or water wash sludge shall be handled and stored in such manner as to prevent the escape of fugitive dust emissions.
(3) All resin spraying operations shall be conducted in a booth or an enclosed work area and the emissions shall be exhausted through elevated stack(s). All stacks shall discharge vertically to the atmosphere with no restrictions or obstructions to flow. Each stack shall meet one of the following requirements:
(A) a stack height at least 25 feet above grade and a minimum flow rate of 20,000 actual cubic feet per minute (acfm), or
(B) a stack height at least 30 feet above grade and a minimum flow rate of 15,000 acfm.
(4) If annual resin usage is less than 1,000 pounds, then the owner or operator of this facility shall be exempt from all requirements of this exemption except recordkeeping [See 113(a)(2)].
(c) The following requirements shall apply only to non-spraying operations:
(1) No more than 150 tons of resin and gelcoat combined and 1.5 tons of acetone shall be used per year (gross usage minus waste disposal).
(2) All solid trim grinding operations shall be vented through a dry filter system or a water wash system which has a particulate removal efficiency of at least 95%. Particulates trapped in the dry filter system or water wash sludge shall be handled and stored in such a manner as to prevent the escape of fugitive dust emissions.
(3) All resin operations shall be conducted in a booth or an enclosed work area or the manufacturing building and the emissions shall be exhausted through elevated stack(s). All stacks shall discharge vertically to the atmosphere with no restrictions or obstructions to flow. Each stack shall meet one of the following requirements:
(A) a stack height at least 25 feet above grade and a minimum flow rate of 20,000 acfm, or
(B) a stack height at least 30 feet above grade and a minimum flow rate of 15,000 acfm.
(4) If annual resin usage is less than 3,000 pounds, then the owner or operator of this facility are exempt from all requirements of this exemption except recordkeeping [See 113 (a)(2)].
114. Any sand and gravel production facility that obtains its material from deposits of sand and gravel consisting of natural disintegration of rock and stone, provided that the following conditions are satisfied:
(a) Crushing or breaking operations are not used.
(b) No blasting is conducted to obtain the material.
(c) Water sprays are installed on the plant at all screens and transfer points and used as necessary to achieve maximum control of dust emissions.
(d) The area where the sand and gravel is obtained shall be sprinkled with water as necessary to achieve maximum control of dust emissions before the material is removed and transported for processing.
(e) All in-plant roads shall be paved and cleaned or sprinkled with water and/or chemicals as necessary to achieve maximum control of dust emissions.
(f) The plant is located at least 1/4 mile from any recreational area or residence or other structure not occupied or used solely by the owner of the facility or the owner of the property upon which the facility is located.
(g) The production rate is 50 tons per hour or less.
115. Changes or additions to existing semiconductor manufacturing operations provided that all such changes satisfy the following conditions:
(a) A permit has been issued by the Texas Natural Resource Conservation Commission (TNRCC) for at least one emission source owned by the person using the exemption on the same property.
(b) For purposes of this standard exemption, and before this exemption is used for the first time at a property, the baseline emissions and the predicted ground level concentration (GLC) for each air contaminant shall be established by the person using the exemption. These baseline emissions and GLCs may be those provided with the most recent permit application if that application included all emissions from the site, otherwise new baselines shall be provided. The baseline GLC for each air contaminant is defined as the maximum off-property concentration of that contaminant which: (1) has been determined by atmospheric dispersion modeling accomplished pursuant to guidance obtained from the Executive Director, (2) is based on allowable emissions under all existing authorizations such as permits, special permits, standard exemptions and special exemptions, and actual emissions from grandfathered facilities, and (3) has been subjected to a previous health effect review in the issuance of an authorization to construct.
(c) Before construction begins, the changes shall be registered with the TNRCC Office of Air Quality in Austin using Form PI-7.
(d) The increase (if any) in the emissions of the following air contaminants in tons per year does not exceed the values specified:
|Particulate matter||5 tpy|
|Volatile Organic Compounds||15 tpy|
|Acid gases or vapors||5 tpy|
|Nonvolatile hydrocarbon emissions||10 tpy|
|Any other air contaminant||5 tpy|
|Total of all air contaminants||25 tpy|
(e) Data from air emissions monitoring or an emissions inventory is compiled and/or updated on an annual basis for all emission sources on the property, maintained on a three-year rolling retention cycle, and made available upon request by the Executive Director or his designated representative.
(f) Emissions of each specific air contaminant from the facility shall be provided with the Form PI-7. The total increase in emissions for any contaminant through any single or cumulative use of this exemption shall not exceed 25% of the baseline emissions and 25% of the baseline GLC as defined in (b) above. Emissions of an air contaminant may be substituted for a previously approved contaminant included in the baseline emissions under (b) above, if it meets the criteria that;
(E2)(OEL1) < = (E1)(OEL2)
where: E1 is the emission rate of contaminant (1) approved for the baseline in (b).
E2 is the emission of the air contaminant (2) to be substituted.
OEL1 is the occupational exposure level for contaminant 1.
OEL2 is the occupational exposure level for contaminant 2.
For the purposes of this exemption, the occupational limit to be used in the formula above shall be the lowest of those published as: 1) Occupation Safety and Health Administration permissible exposure limit, 2) National Institute for Occupational Safety and Health recommended exposure limit, or 3) the current American Conference of Governmental Industrial Hygienists Threshold Limit Value (TLV), with the following exceptions:
methylene chloride - use 26 milligrams per cubic meter
perchloroethylene - use 33.5 mg/m3; and
propylene oxide - use 5 mg/m3.
(g) Emissions from each existing and proposed stack, hood, vent, or opening to the atmosphere shall have no visible emissions.
(h) This standard exemption is intended to include, but not be limited to, the following example type operations:
(1) Changes to and/or rearrangement of existing equipment.
(2) Research, development, engineering, quality control, and analytical processes.
(3) Plating, coating, stripping, cleaning, dispensing, testing, curing, drying, trimming, marking, and packaging operations.
(4) Liquid and gaseous hydrogen or carbon dioxide storage, distribution, and/or containment facilities.
(5) Semiconductor material alloying, crystal growing, deposition, annealing, polishing, sizing, thermal diffusion, and ion implantation, provided the GLC of each specific air contaminant is provided in accordance with above condition (f) prior to use.
(6) Semiconductor processes for deposition of metallic contacts, insulative oxides and composites, electron beam techniques, plasma and plasma enhanced operations, reactive ion and laser material displacement, photolithography patterning, and mask fabrication.
(7) Facilities for the storage and/or handling of containerized chemicals, provided that:
(A) Chemicals are stored in closed, non-leaking, Department of Transportation approved containers maintained in good condition,
(B) No portable container exceeds 300 gallons in volume capacity,
(C) Incompatible chemicals are stored with sufficient separation such that inadvertent spillage or leakage will not allow mixing that could produce or cause a reaction which could cause emissions to occur, and
(D) Any spillage is promptly cleaned up and removed for proper
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