Standard Exemptions 7 - 61, July 26, 1985
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7. Boilers, heaters, drying or curing ovens, furnaces or other combustion units, but not including stationary internal combustion engines or turbines, provided that they operate according to the following conditions:
(1) The only emissions are products of combustion of the
(2) The maximum heat input is 10 x 106 BTU per hour or less.
(3) The fuel is:
(a) Sweet natural gas,
(b) LP gas
(c) Fuel gas containing no more than 0.1 grains of total sulfur compounds (calculated as sulfur) per dry standard cubic foot, or
(d) No. 2 fuel oil with less than 0.5% sulfur by weight.
8. Water cooling towers and water tanks, reservoirs or other water containers which cool, store or otherwise handle water that has not been used in direct contact with process gaseous or liquid streams containing air contaminants.
9. Equipment used exclusively for steam or dry cleaning of fabrics, plastics, rubber, wood or vehicle engines or drive trains.
10. Presses used exclusively for extruding metals, minerals, plastics, rubber or wood except where halogenated carbon compounds or hydrocarbon solvents are used as foaming agents.
11. Presses used for the curing of rubber products and plastic products.
12. Equipment used for hydraulic or hydrostatic testing.
13. All printing presses except (a) those which will emit 15 tons per year or more of volatile organic printing solvents or (b) those which utilize heat set or thermo set inks.
14. Tanks, vessels and pumping equipment used exclusively for the storage or dispensing of fresh commercial or pure grades of acetic acid with an acid strength of 99.98% or less by weight; sulfuric acid with an acid strength of 99% or less by weight; phosphoric acid with an acid strength of 99% or less by weight; nitric acid with an acid strength of 70% or less by weight; aqueous caustic or salt solutions of sodium, calcium, potassium, magnesium, barium and lithium metals; water or waste water.
15. Equipment used exclusively for the dyeing or stripping of textiles.
16. Equipment used exclusively to mill or grind coatings and molding compounds where all materials charged are in a paste form.
17. Crucible or pot furnaces with a brim full capacity of less than 450 cubic inches of any molten metal.
18. Equipment used exclusively for the melting or applying of wax.
19. Equipment used exclusively for bonding lining to brake shoes.
20. Equipment used in eating establishments for the purpose of preparing food for human consumption.
21. Equipment used exclusively to store or hold dry natural gas.
22. All closed tumblers used for the cleaning or deburring of metal products without abrasive blasting, and all open tumblers with a batch capacity of 1,000 pounds or less.
23. Shell core and shell mold manufacturing machines.
24. Sand or investment molds with a capacity of 100 pounds or less used for the casting of metals.
25. Batch mixers with rated capacity of 5-cubic feet or less.
26. Equipment used exclusively for the packaging of lubricants or greases.
27. Equipment used exclusively for conveying and storing plastic and/or rubber pellets, but not powders.
28. Equipment used exclusively for the mixing and blending of materials at ambient temperature to make water based adhesives.
29. Smokehouses in which the maximum horizontal inside cross sectional area does not exceed 100 square feet.
30. Platen presses used for laminating.
31. Blast cleaning equipment using a suspension of abrasives in water.
32. Ovens, mixers, blenders, barbecue pits and cookers if the products are edible and intended for human consumption.
33. Kilns used for firing ceramic ware, heated exclusively by natural gas, liquefied petroleum gas, electricity or any combination thereof where.
(a) the total heat input is (10 x 106) BTU per hour or less
(b) there are not emissions of lead, beryllium or fluorides and emissions of sulfur dioxide and particulate matter from both the material being fired and fuel burned do not exceed 25 tons per year of either air contaminant.
34. Bench scale laboratory equipment and laboratory equipment used exclusively for chemical or physical analyses.
35. Equipment used for inspection of metal products.
36. Equipment used exclusively for rolling, forging, pressing, drawing, spinning or extruding either hot or cold metals by some mechanical means.
37. Die casting machines.
38. Photographic process equipment by which an image is reproduced upon material sensitized to radiant energy.
39. Brazing, soldering or welding equipment, except those which emit 0.6 tons per year or more of lead.
40. Hand-held or manually operated equipment used for buffing, polishing, carving, cutting, drilling, machining, routing, sanding, sawing, surface grinding or turning of ceramic art work, ceramic precision parts, leather, metals, plastics, fiber board, masonry, carbon, glass, graphite or wood.
41. Equipment using aqueous solutions for electrolytic plating, electrolytic polishing or stripping of brass, bronze, cadmium, copper, iron, lead, nickel, tin, zinc and precious metals and for cleaning, stripping, etching or other surface preparation but not including chemical milling or electrolytic metal recovery and reclaiming systems.
42. Equipment used for washing or drying products fabricated from metal or glass, provided no volatile organic materials are used in the process and that no oil or solid fuel is burned.
43. Laundry dryers, extractors or tumblers used for fabrics cleaned only with water solutions of bleach or detergents.
44. Foundry sand mold forming equipment to which no heat is applied.
45. Equipment used for compression molding and injection molding of plastics.
46. Mixers, blenders, roll mills or calendars for rubber or plastics where no material in powder form is added and in which no organic solvents, diluents or thinners are used.
47. Equipment used exclusively to package pharmaceuticals and cosmetics or to coat pharmaceutical tablets.
48. Roll mills or calendars for rubber or plastics in which organic solvents, diluents or thinners are used provided that before construction begins the facility is registered with From PI-7 and information regarding process rate and type of material emitted.
49. Vacuum producing devices used in laboratory operations.
50. Containers, reservoirs, or tanks used exclusively for dipping operations for coating objects with oils, waxes, or greases where no organic solvents, diluents, or thinners are used; or dipping operations for applying coatings of natural or synthetic resins which contain no organic solvents.
51. Containers, reservoirs, tanks or change of material stored in the container, reservoir or tank used exclusively for unheated storage of organic materials with initial boiling point of 300 F or greater. The storage of mercaptans, croton oil, 2-methyl styrene or any compound listed in Federal Regulation 40 CFR 261, Appendix VIII is not exempt under this standard exemption. However, an exemption is allowed for any tank of a capacity not to exceed 100 gallons storing only commercial odorants used to odorize petroleum gases under federal regulations.
52. Containers, reservoirs, or tanks used exclusively for the storage of fuel oils, kerosene, diesel fuel, lubricating oils or oil additives if the material stored has a true vapor pressure of less than 0.5 psia.
53. Containers, reservoirs, or tanks with a capacity of 6,000 gallons or less used exclusively for the storage of organic liquids, except gasoline, normally used as solvents, diluents, or thinners; inks; colorants; paints; lacquers; enamels; varnishes; liquid resins; or other surface coatings. Any compound listed in Federal Regulation 40 CFR 261, Appendix VIII is not exempt under this standard exemption.
54. Containers, reservoirs, or tanks used exclusively for the storage of liquid soaps, liquid detergents, vegetable oils, waxes, or wax emulsions.
55. Containers, reservoirs, or tanks used exclusively for the storage of asphalt.
56. Storage tanks with a capacity of less than 40,000 gallons, used exclusively for the storage of sweet crude oil, sweet natural gas condensate, gasoline and petroleum fuels having a true vapor pressure of less than 11 psia at the maximum storage temperature.
57. Electrically heated or sweet natural gas or LP gas fueled 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.
58. 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. In ferrous melting furnaces where gray iron or steel is
a. Ductile iron is not produced, and
b. The furnace charge is free of oil and grease.
2. In non-ferrous melting furnaces, only the following metals are melted, 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.
3. No lead is melted, poured or held in a molten state.
59. Vacuum cleaning systems used exclusively for industrial, commercial, or residential housekeeping purposes.
60. Sewage treatment facilities (excluding combustion or incineration equipment, land farms or grease trap waste handling or treatment facilities).
61. 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 or similar operations are not exempt.
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