Outdated Standard Exemptions 62 - 72, April 5, 1995
62. Confined feeding operations which satisfy the following conditions: (a) Livestock animal feedlots designed to feed less than 1,000 animals. (b) Ranged turkey feeding operations, caged egg laying operations and caged pullet operations designed to feed less than 20,000 birds when a dry manure handling and storage system is used. (c) All housed broiler, pullet, turkey, breeder hen and egg laying operations when wood shavings or similar material are used as litter. (d) All caged egg laying and caged pullet operations designed to feed more than 20,000 hens when a dry manure storage and handling system is used and when 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 egg laying or caged pullet operations. Before construction of the caged laying and caged pullet begins, written site approval shall be received from the Executive Director of the Texas Natural Resource Conservation Commission (TNRCC) and the facility shall be registered with the TNRCC Office of Air Quality in Austin using Form PI-7. 63. Livestock auction sales facilities, provided the following conditions are satisfied: (a) All holding pens shall be covered by a roof. (b) All traffic areas shall be paved and cleaned, oiled, or sprinkled with water and/or chemicals as necessary to achieve maximum control of dust emissions. (c) Manure shall be cleaned from pens as necessary to prevent an odor nuisance and disposed of in a manner which will not create a nuisance. (d) Dead animals shall be properly disposed of within 24 hours after death. (e) The facility shall be located at least 600 feet from any recreational area or residence or other structure not occupied or used solely by the owner or operator of this facility. (f) Before construction of the facility begins, written site approval shall be received from the Executive Director of the Texas Natural Resource Conservation Commission (TNRCC) and the facility shall be registered with the TNRCC Office of Air Quality in Austin using Form PI-7. 64. Modifications to feed milling operations which satisfy the following: (a) In conjunction with the installation of additional grain or feed storage silos, including bins used for loading out finished feed, all materials shall be transported in a closed conveying system when handled mechanically or pneumatically. Exhaust air to the atmosphere shall be vented through a fabric filter having a maximum filtering velocity of 4.0 feet per minute (ft/min) with mechanical cleaning or 7.0 ft/min with automatic air cleaning. (b) In conjunction with the installation of a pellet mill/pellet cooler system, the air from the pellet cooler shall be vented through a high efficiency cyclone collector which has a cone length at least twice the diameter of the cyclone. 65. Salt water disposal facilities used to handle aqueous liquid wastes from petroleum production operations and water injection facilities, provided that the following conditions are met: (a) Any facility processing salt water which emits a sour gas shall be located at least 1/4 mile from any recreational area or residence or other structure not occupied or used solely by the owner or operator of the facility or the owner of the property upon which the facility is located. (b) Any open storage of salt water shall be operated in such a manner as to prevent the occurrence of a nuisance condition off-property. (c) All plant roads and truck loading and unloading areas must be operated and/or maintained as necessary to prevent dust emissions from the property which would cause or contribute to a nuisance condition. Appropriate operating activities may include reduction of speed of vehicles, use of alternate routes, and covering of dust-producing loads being hauled. Appropriate maintenance activities may include watering, treatment with dust suppressant chemicals, oiling, paving, and cleaning dust-producing surfaces. 66. Any oil or gas production facility*, carbon dioxide separation facility*, or oil or gas pipeline facility* consisting of one or more tanks, separators, dehydration units, free water knockouts, gunbarrels, heater treaters, natural gas liquids recovery units, or gas sweetening and other gas conditioning facilities, including sulfur recovery units at facilities conditioning produced gas containing less than two long tons per day of sulfur compounds as sulfur, provided that the following conditions are met: (a) Compressors and flares shall meet the requirements of Standard Exemptions 6 and 80, respectively. (b) Total emissions, including process fugitives, combustion unit stacks, separator, or other process vents, tank vents, and loading emissions from all such facilities constructed at a site under this exemption shall not exceed 25 tons per year (tpy) each of sulfur dioxide (SO2), all other sulfur compounds combined, or all volatile organic compounds (VOC) combined; and 250 tpy each of nitrogen oxide and carbon monoxide. Emissions of VOC and sulfur compounds other than SO2 must include gas lost by equilibrium flash as well as gas lost by conventional evaporation. (c) Any facility handling sour gas shall be located at least 1/4 mile from any recreational area or residence or other structure not occupied or used solely by the owner or operator of the facility or the owner of the property upon which the facility is located. (d) Total emissions of sulfur compounds, excluding sulfur oxides, from all vents shall not exceed 4.0 pounds per hour (lb/hr) and the height of each vent emitting sulfur compounds shall meet the following requirements except in no case shall the height be less than 20 feet:
|Total as Hydrogen Sulfide, lb/hr||Minimum vent height, feet|
Note: Other values may be interpolated.
(e) Before operation begins, facilities handling sour gas shall be registered with the Texas Natural Resource Conservation Commission Office of Air Quality in Austin using Form PI-7 along with supporting documentation that all requirements of this exemption will be met. For facilities constructed under Standard Exemption 67, the registration is required before operation under Standard Exemption 66 can begin. If the facilities cannot meet Standard Exemption 66, a permit is required prior to continuing operation of the facilities.
* This exemption applies only to those facilities named above which handle gases and liquids associated with the production, conditioning, processing, and pipeline transfer of fluids found in geologic formations beneath the earth's surface.
67. Temporary separators, tanks, meters, and fluid-handling equipment used for a period not to exceed 90 operating days, provided that all the following conditions are satisfied:
(a) The purpose of the 90-day period is to test the content of a subsurface stratum believed to contain oil or gas and/or to establish the proper design of a permanent fluid-handling facility.
(b) Any sour gas produced during this test period shall be burned in a smokeless flare which meets the requirements of conditions (a)(4), (b)(1), and (b)(3) of Standard Exemption 80.
(c) Total emissions of reduced sulfur compounds, excluding sulfur oxides, but including hydrogen sulfide, shall not exceed 4.0 pounds per hour and the emission point height of any vent of reduced sulfur compounds shall meet the requirements of Standard Exemption 66(d).
(d) Operation of a facility authorized by this exemption beyond the 90-day period shall not be allowed unless such operation is authorized under another Standard Exemption or is permitted under Section 116.1 or Section 116.7.
68. Equipment used to reclaim or destroy chemicals removed from contaminated ground water, contaminated water condensate in tank and pipeline systems, or contaminated soil, for the purpose of remedial action, provided all the following conditions are satisfied:
(a) Applicability shall pertain to soil and water remediation at the property where the original contamination of the ground water or soil occurred or at a nearby property secondarily affected by the contamination, but not to any soil or water treatment facility where soils or water are brought in from another property. Such facilities are subject to Section 116.1, relating to Permit Requirements.
(b) For treating groundwater or soil contaminated with petroleum compounds, the total emissions of petroleum hydrocarbons shall not exceed 1.0 pound per hour (lb/hr), except that benzene emissions also must meet the conditions of Standard Exemption 118(c) and (d). For purposes of this exemption, petroleum is considered to include: (1) liquids or gases produced from natural formations of crude oil, tar sands, shale, coal and natural gas, or (2) refinery fuel products to include fuel additives.
(c) For treating groundwater or soil contaminated with chemicals other than petroleum, emissions must meet the requirements of Standard Exemption 118(b), (c), and (d). If the groundwater or soil is contaminated with both petroleum and other chemicals, the petroleum compound emissions must meet condition (b) of this exemption and the other chemical emissions must meet the requirements of Standard Exemption 118(b), (c), and (d). The emission of any chemical not having a Limit (L) Value in Table 118A of Standard Exemption 118 is limited to 1.0 lb/hr.
(d) The handling and processing (screening, crushing, etc.) of contaminated soil and the handling and conditioning (adding moisture) of remediated soil shall be controlled such that there are no visible emissions with the exception of moisture.
(e) If abatement equipment is used to meet conditions (b) and (c), the equipment must satisfy one of the following conditions:
(1) The vapors shall be burned in a direct-flame combustion device (incinerator, furnace, boiler, heater, or other enclosed direct-flame device) operated in compliance with Standard Exemption 88(b) and (c).
(2) The vapors shall be burned in a flare which meets the requirements of Standard Exemption 80 and the requirements of 40 Code of Federal Regulations 60.18 which shall take precedence over Standard Exemption 80 in any conflicting requirements whether or not New Source Performance Standards apply to the flare.
(3) The vapors shall be burned in a catalytic oxidizer which destroys at least 90% of the vapors. An evaluation of oxidizer effectiveness shall be made at least weekly using a portable flame or photoionization detector or equivalent instrument to determine the quantity of carbon compounds in the inlet and outlet of the catalytic oxidizer. Records of oxidizer performance shall be maintained in accordance with condition (g).
(4) The vapors shall be routed through a carbon adsorption system (CAS) consisting of at least two activated carbon canisters that are connected in series. The system shall meet the following additional requirements:
(A) The CAS shall be sampled and recorded weekly to determine breakthrough of volatile organic compounds (VOC). Breakthrough is defined as a measured VOC concentration of 50 parts per million by volume (ppmv) in the outlet of the initial canister. The sampling point shall be at the outlet of the initial canister, but before the inlet to the second or final polishing canister. Sampling shall be performed while venting maximum emissions to the CAS. (Example: during loading of tank trucks, during tank filling, during process venting.)
(B) A flame ionization detector (FID) shall be used for VOC sampling. The FID shall be calibrated prior to sampling with certified gas mixtures (propane in air) of 10 ppmv +/- 2.0% and of 100 ppmv +/- 2.0%.
(C) When the VOC breakthrough is measured, the waste gas flow shall be switched to the second canister immediately. Within four hours of detection of breakthrough, a fresh canister shall be placed as the new final polishing canister. Sufficient fresh activated carbon canisters shall be maintained at the site to ensure fresh polishing canisters are installed within four hours of detection of breakthrough.
(D) Records of the CAS monitoring maintained at the plant site shall include, but are not limited to, the following:
1. sample time and date,
2. monitoring results (ppmv),
3. corrective action taken, including the time and date of the action, and
4. process operations occurring at the time of sampling.
(E) The registration shall include a demonstration that activated carbon is an appropriate choice for control of the organic compounds to be stripped.
(f) Before construction of the facility begins, the facility shall be registered with the Texas Natural Resource Conservation Commission (TNRCC) Office of Air Quality in Austin using Form PI-7. The registration shall contain specific information concerning the basis (measured or calculated) for the expected emissions from the facility. The registration shall also explain details as to why the emission control system can be expected to perform as represented.
(g) Records required by applicable paragraphs of this exemption shall be maintained at the site and made available to personnel from the TNRCC or any local agency having jurisdiction. These records shall be made available to representatives of the TNRCC and local programs upon request and shall be retained for at least two years following the date that the data is obtained.
69. Replacement or addition of cotton gin stands where no other equipment change or additions are involved.
70. Repairs or maintenance not involving structural changes where no new or permanent facilities are installed.
71. Any permanently or temporarily located concrete plant* that accomplishes wet batching, dry batching, or central mixing, and operates in compliance with the following conditions:
(a) All stockpiles shall be sprinkled with water and/or dust-suppressant chemicals as necessary to achieve maximum control of dust emissions. The stockpile sprinkler system shall be operable at all times.
(b) A mechanism shall be installed on each bulk storage silo to warn operators when the silo is full.
(c) All permanent in-plant roads (batch truck and material delivery truck roads) shall be paved with a cohesive hard surface that can be repeatedly swept, washed, and maintained intact and cleaned as necessary to achieve maximum control of dust emissions. All batch trucks and material delivery trucks shall remain on a paved surface when entering, conducting primary function, and leaving the property. Other areas on the property subject to vehicle traffic shall be watered, treated with dust-suppressant chemicals, oiled, or paved and cleaned as necessary to achieve maximum control of dust emissions.
(d) The cement weigh hopper shall be vented to its own fabric filter or the central collection system specified in condition (f).
(e) All bulk storage silos shall be equipped with fabric filter(s) having a maximum filtering velocity of 4.0 feet per minute (ft/min) with mechanical cleaning or 7.0 ft/min with automatic air cleaning or shall be vented to the central collection system specified in condition (f).
(f) The dust emissions at the batch drop point (drum feed for central mix plants) shall be controlled by a shroud or other pickup device delivering a minimum of 4,000 actual cubic feet per minute of air to a fabric filter with automatic air cleaning and a 7.0 ft/min maximum filtering velocity, or automatic sequenced mechanical cleaning (not manually activated) and a 5.25 ft/min maximum filtering velocity.
(g) Unless the facility is to be located temporarily in or contiguous to the right-of-way of a public works project, public notice and opportunity for public hearing, as specified in Section 116.10(a)(3) and (4) and (b), must be published and documentation provided to the Texas Natural Resource Conservation Commission (TNRCC). A temporarily located plant exempt from public notice may provide concrete for the same contractor for project segments with the same governmental entity, but may not produce concrete for other unrelated projects or other governmental entities.
(h) Spillage of cement and fly ash used in the batch shall be cleaned up immediately and contained or dampened so that dust emissions from wind erosion and/or vehicle traffic are minimized.
(i) All open-bodied vehicles transporting material from a dry batch plant to the paving mixer(s) shall be loaded with a final layer of wet sand and/or the truck shall be covered with a tarp to reduce the emissions of dust to the minimum level possible under existing conditions.
(j) Before construction of the facility begins, written site approval shall be received from the Executive Director of the TNRCC, and the facility shall be registered with the TNRCC Office of Air Quality in Austin using Form PI-7, including a current TNRCC Table 20.
* A temporarily located concrete facility occupies a designated site for not more than 180 consecutive days or supplies concrete for a single public works project or for the same contractor for related project segments, but not other unrelated projects.
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