| Acetylene generators: to operate an acetylene generator having a calcium carbide capacity exceeding five pounds. |
| Automobile tire rebuilding plants: to operate an automobile tire rebuilding plant. |
| Automobile wrecking yards: to operate an automobile wrecking yard. |
| Bowling establishments: for bowling pin refinishing and bowling lane resurfacing operations involving the use and application of flammable or combustible liquids or materials. |
| Cellulose nitrate motion-picture film: to store, keep or have on hand more than 25 pounds of cellulose nitrate motion-picture film. |
| Cellulose nitrate plastics (pyroxylin): |
| (1) | To store, keep or have on hand more than 25 pounds of cellulose nitrate plastics (pyroxylin). |
| (2) | To manufacture articles of cellulose nitrate plastics (pyroxylin) which shall include the use of cellulose nitrate plastics (pyroxylin) in the manufacture or assembling of other articles. |
| Combustible fibers: to store, handle or use combustible fibers in quantities in excess of 100 cubic feet, except agricultural products on a farm. |
| Combustible materials: to store combustible materials, including, but not limited to, empty combustible packing cases, boxes, barrels or similar containers, rubber tires, baled cotton, rubber, cork or other similar materials in excess of 2,500 cubic feet gross volume, on any premises. |
| Compressed gases: to store, handle or use at normal temperatures and pressures more than 2,000 cubic feet of flammable compressed gas or 6,000 cubic feet of nonflammable compressed gas; or to store, handle or use any quantity of liquefied natural or hydrogen gas. |
| Cryogenics: to store, handle or use cryogenic fluids, except cryogenics used as motor fuel and stored in motor vehicle tanks, as follows: |
| (1) | Production, sale or storage of cryogenic fluids. |
| (2) | Storage or use of flammable cryogenic fluids, cryogenic oxidizers or liquefied oxygen in excess of 10 gallons. |
| Dry-cleaning plants: to use in excess of four gallons of solvents or cleaning agents classified as flammable or combustible. |
| Dust-producing plants: to operate any grain elevator, flour, starch or feed mill, woodworking plant or plant pulverizing aluminum, coal, cocoa, plastics, magnesium, spices, sugar, sulfur or other materials producing potentially explosive dust. |
| Explosives, ammunition and blasting agents: |
| (1) | To manufacture, possess, store, sell or otherwise dispose of explosives and blasting agents. |
| (2) | To use explosives or blasting agents. |
| (3) | To operate a terminal for handling explosives or blasting agents. |
| Flammable and combustible liquids: |
| (1) | To store, handle or use flammable liquids in excess of 6 1/2 gallons inside dwellings, in excess of 10 gallons inside any other building or other occupancy or in excess of 60 gallons outside of any building. This provision shall not apply to liquids in the fuel tank of a motor vehicle, aircraft, portable or stationary engine, boat or portable heating plant or paints, oils, varnishes or similar flammable mixtures when such liquids are stored for maintenance, painting or similar purposes. |
| (2) | To store, handle or use combustible liquids in excess of 25 gallons inside a building or in excess of 60 gallons outside of a building. This provision shall not apply to fuel oil used in connection with oil-burning equipment. |
| (3) | A permit shall be obtained for the initial installation of an oil burner and a fuel oil tank used in connection therewith. A permit shall be required for the replacement of a fuel oil tank connected to an oil burner. |
| (4) | For processing, blending or refining of flammable or combustible liquids. |
| Flammable finishing: for spraying, coating or dipping operations utilizing flammable or combustible liquids. |
| Fruit ripening process: to conduct a fruit ripening process using ethylene gas. |
| Fumigation and thermal insecticidal fogging: to conduct fumigation or thermal insecticidal fogging operations. |
| Hazardous chemicals: |
| (1) | To store, handle or use more than 55 gallons of corrosive liquids, or more than 50 pounds of oxidizing materials, or more than 10 pounds of organic peroxides, or more than 50 pounds of nitromethane or 1,000 pounds or more of ammonium nitrate, ammonium nitrate fertilizers and fertilizer mixtures containing 60% or more ammonium or any amount of toxic material or poisonous gas. |
| (2) | To store, handle or use any quantity of air-reactive, water-reactive or unstable materials. |
| Junkyards: to operate a junkyard. |
| Liquefied petroleum gas: for each installation of liquefied petroleum gas employing a container or an aggregate of interconnected containers of over 2,000 gallons' water capacity and for each permanent installation, irrespective of size of containers, made at buildings in which 20 or more persons congregate for civic, political, educational, religious, social or recreational purposes. |
| Lumberyards: to operate a lumberyard. |
| Magnesium: for melting, casting, heat treating, machining or grinding of more than 10 pounds of magnesium per working day. |
| Matches: |
| (1) | To manufacture matches. |
| (2) | To store matches in excess of 25 cases. (NOTE: One case equals one matchman's gross of 14,400 matches.) |
| Organic coatings: to perform organic coating operations utilizing more than one gallon of organic coating on any working day. |
| Ovens and furnaces: to operate industrial processing ovens and furnaces operating at approximately atmospheric pressures and temperatures not exceeding 1,400º F. which are heated with oil or gas fuel or which during operation contain flammable vapors from the material in the oven or catalytic combustion system. |
| Places of assembly: to maintain, operate or use a place of assembly. |
| Service stations and repair garages: to operate a service station or repair garage. |
| Welding and cutting: to operate a welding and cutting business. A record of all locations where welding or cutting operations are performed shall be maintained and kept available for inspection by the permit holder. |