Outdated Standard Exemptions 62 - 72, January 8, 1980
Clicking on a highlighted number below links you to the standard exemption.62 | 63 | 64 | 65 | 66 | 67 | 68 | 69 | 70 | 71 | 72
62. Containers, reservoirs, or tanks used exclusively for the storage of asphalt.
63. Storage tanks with a capacity of less than 25,000 gallons, used exclusively for the storage of gasoline and other petroleum fuels having a true vapor pressure of less than 11 psia.
64. Equipment used for transporting materials on streets or highways, including those highways defined by Article X, Section 2 of the Constitution of Texas.
65. Equipment used exclusively for heat treating, soaking, case hardening or surface conditioning of metal objects, such as carbonizing, cyaniding, nitriding, carbon-nitriding, siliconizing or diffusion treating when sweet natural gas or LP gas is used as fuel.
66. Crucible furnaces, pot furnaces, or induction furnaces with a capacity of 1000 pounds or less, each in which no smelting, reduction, sweating, or distilling is conducted, and with the following limitations:
1. Gray iron or steel is melted and:
a. Ductile iron is not produced.
b. The furnace charge is free of oil and grease.
2. The following metals are poured or held in a molten state:
(a) Aluminum or any alloy containing over 50% aluminum.
(b) Magnesium or any alloy containing over 50% magnesium.
(c) Tin or any alloy containing over 50% tin.
(d) Zinc or any alloy containing over 50% zinc.
(f) Precious metals.
67. Vacuum cleaning systems used exclusively for industrial, commercial, or residential housekeeping purposes.
68. Sewage treatment facilities excluding combustion or incineration equipment or land farms.
69. Water and waste water treatment facilities using only one or any combination of the following treatment procedures: flocculation, sedimentation, aeration, activated sludge, trickling filters or stabilization ponds. Units utilizing incineration, volatile carbon compound-water separation, gas stripping, land farms or similar operations are not exempt.
70. Confined feeding operations which satisfy the following conditions:
- Livestock animal feedlots designed to feed less than 1000 animals
- Caged egg laying operations designed to house less than 20,000 hens and range turkey feeding operations designed to feed less than 20,000 turkeys when a dry manure handling and storage system is used or the manure is handled as a liquid slurry and stored in covered pits.
- All housed broiler, pullet, turkey and breeder hen operations when wood shavings or similar material is used as litter.
- Expansion of existing feeding facilities in operation prior to March 1, 1972 when the expansion does not exceed 100% of the animal capacity as of March 2, 1972. No expansion of existing facilities in a Standard Metropolitan Statistical Area is covered by this exemption.
72. Any natural gas or carbon dioxide dehydration plant provided that:
- The plant is located at least 1/4 mile away from any public building, public recreational area or any residence not owned and occupied by the person proposing to install the dehydration plant.
- Emissions of sulfur dioxide are less than 25 tons per year and hydrogen sulfide emissions are less than 4 pounds per hour. The height of the hydrogen sulfide emission point must meet condition (3) in Exemption No. 104 for tank batteries handling sour crude oil.
- Emissions of non-methane, non-ethane organic compounds, including fugitive losses, are less than 25 tons per year. Fugitive emissions shall include losses from water desorption as well as from valves, pumps and compressor seals.
- Compressors associated with this facility shall meet the requirements of Exemption No. 6.
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