(A) Storage to be underground; limitation on total capacity. Storage shall be underground and the combined capacity of all storage tanks shall not exceed 100,000 gallons for existing and new service stations. Except for service stations located adjacent to the I-290 interexchange right-of-way on the interexchange exits of Mannheim Road and 25th Avenue whereby the total capacity of all storage tanks shall not exceed 300,000 gallons.
(B) Location restrictions for tanks as to buildings. All tanks with a capacity of 2,000 gallons or less which are located closer than 10 feet to any building, all tanks with a capacity of between 2,000 gallons and 6,000 gallons which are located closer than 10 feet to any building, all tanks with a capacity of between 2,000 gallons and 6,000 gallons which are located closer than 20 feet to any building and 28,000 gallons which are located closer than 25 feet to any building, whether or not such buildings are on or off the property on which the tanks are located, shall be buried so that the tops of the tanks shall be lower than all floors, basements, cellars or pits of the buildings.
(C) Location restrictions for tanks as to sewer, manhole and the like.
(1) All tanks with a capacity of 2,000 gallons or less which are located closer than 10 feet to a sewer, manhole, catch basin, cesspool, septic tank, well or cistern, all tanks with a capacity of between 2,000 gallons and 6,000 gallons which are located closer than 20 feet to a sewer, manhole, catch basin, cesspool, septic tank, well or cistern, and all tanks with a capacity of between 6,000 gallons and 28,000 gallons which are located closer than 25 feet to a sewer, manhole, catch basin, cesspool, septic tank, well or cistern shall be buried so that the tops of the tanks are lower than the bottom level of all such sewers, manholes, catch basins, cesspools, septic tanks, wells or cisterns.
(2) The term SEWER includes the sewer line out of the station building unless the station sewer line is constructed throughout of cast iron with leaded joints.
(D) Location restriction as to property lines. Individual tanks with a capacity up to 2,000 gallons shall maintain a 10-foot clearance to the property line. For individual tanks of a capacity of more than 2,000 gallons and up to 6,000 gallons this distance shall be 20 feet. For individual tanks of a capacity of more than 6,000 gallons and up to 28,000 gallons this distance shall be 25 feet. However, these clearances on the side adjacent to a public street, alley or highway may be waived by consent of the authorities having immediate jurisdiction over the public street, alley or highway if it can be shown that the required sewer clearance as set out in division (C) of this section can be maintained.
(E) How tanks to be set into ground. Tanks shall be buried so that their tops will not be less than two feet below the surface of the ground or beneath 12 inches of earth and a slab of concrete reinforced and not less than five inches in thickness and capable of sustaining a load of 250 pounds per square foot; slab shall be set on a firm, well tampered earth foundation and shall extend at least one foot in all directions, beyond the outline of the tank:
(1) Tops of tanks shall be below the level of any piping to which tanks may be connected.
(2) Tanks shall be so located that no heavy trucks or other vehicle pass over them unless they are adequately protected by a reinforcing concrete slab.
(3) Where soil conditions require, a firm foundation shall be provided.
(4) Tanks shall not be installed under any building or structure.
(F) Material and construction of tanks.
(1) Tanks shall bear the label of Underwriters Laboratories or meet equivalent specifications.
(2) Tanks shall be thoroughly coated on the outside with tar, asphaltum or other suitable rust- resisting material.
(3) Tanks shall not be surrounded or covered by cinders or other material of corrosive effect. If the soil contains corrosive material special protection must be provided.
(G) Venting of tanks.
(1) Each tank shall be provided with a vent pipe, connected with the top of the tank and carried up to the outer air. The pipe shall be arranged for proper drainage to storage tank and special lower end shall not extend through top of tank for a distance of not more than one inch; it shall have no traps or pockets.
(2) The upper end of pipe shall be provided with a goose-neck or T attachment, or weatherproof hood.
(3) The vent pipe shall be of sufficient cross-sectional area to permit the escape of air and gas during the filling operation and in no case less than one-inch in diameter. If a power pump is used in filling the storage tank, and a tight connection is made to fill the pipe, the vent pipe shall not be smaller than the fill pipe.
(4) The vent pipe shall terminate outside of the building not less than 12 feet above the top of fill pipe and not less than four feet, measuring vertically and horizontally, from any window or other building opening, and not less than 15 feet measured horizontally from any opening into the basement, cellar or pit of any building, and in a location which will not permit pocketing of gas. If a tight connection is made in the filling line, the terminus of the vent pipe shall be carried to a point one foot above the level of the highest reservoir from which the tank may be filled.
(5)
The vent pipe from two or more tanks of the same class of liquid may be connected to one upright or main header; the area of the header shall equal the combined area of the pipes connected with it. Connection of the header shall be not less than one foot above the level of the top of the highest reservoir from which the tank may be filled.
(`95 Code, § 119.10) (Am. Ord. 20-01, passed 2-19-20; Am. Ord. 21-21, passed 6-16-21)
Penalty, see § 10.99