Outdated Standard Exemptions 62-72, August 11, 1989

Standard Exemptions 62 - 72, August 11, 1989 Standard Exemption List

Clicking on a highlighted number below links you to the standard exemption.

62 | 63 | 64 | 65 | 66 | 67 | 68 | 69 | 70 | 71 | 72

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 Air Control Board and the facility shall be registered with the appropriate Regional Office 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
0.27	20
0.60	30
1.94	50
3.00	60
4.00	68

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. Steam, air or inert gas stripping systems used to strip contaminated ground water or contaminated soil of chemicals for emergency cleanup reasons or as required by a government entity, provided the following conditions are satisfied:

(a) For soil and groundwater stripping, the total emissions of air contaminants (except nitrogen, carbon dioxide, air, oxygen and water vapor) do not exceed five pounds per hour. In addition, for soil stripping, operations are conducted at least 1,000 feet from any residence or other structure or any recreational area not occupied or used solely by the operator or owner of the property on which the operations are conducted; or

(b) For groundwater or soil stripping, the stripping gas and the striped vapors are burned in a combustion device and total emissions of air contaminants (except nitrogen, carbon dioxide, air, oxygen and water vapor) shall not exceed five pounds per hour. The combustion device (incinerator, boiler or heater) shall be operated at 20 percent excess air and 0.5 second of gas retention time in a 1400 degrees F or hotter zone. The stripped vapors maybe burned in a flare only if the flare meets the requirements of this exemption and standard exemption 80; and

(c) Other compounds also maybe stripped provided that emissions of specific chemicals meet the requirements of standard exemption 118(b), (c) and (d).

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.

(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 and cleaned as necessary to achieve maximum control of dust emissions. 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 and a 5.25 ft/min maximum filtering velocity.

(g) 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.

(h) Unless the plant 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 Air Control Board (TACB).

(i) Before construction of the facility begins, written site approval shall be received from the Executive Director of the TACB, and the facility shall be registered with the appropriate Regional Office using Form PI-7, including a current TNRCC Table 20.

* A temporarily located concrete plant produces concrete exclusively for a designated construction project or occupies a designated site for no more than 180 consecutive days.

72. Reserved.

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