(a) No storage tank for Class I or Class II liquid shall be buried within a building except under special permit from the Division of Fire, and no such permit shall be issued where such tank can practicably be located on the premises outside the building.
(b) No storage tank for Class I or Class II liquid shall be buried within a building except in buildings of storage occupancy, high hazard occupancy or industrial occupancy classification, and all such storage tanks shall be so located and protected as to present the minimum practicable hazard to the occupants.
(c) In such buildings, two (2) storage tanks for Class I or Class II liquid, not exceeding five thousand (5,000) gallon aggregate capacity, may be installed under a concrete floor construction at the lowest floor level provided they are so located and installed that any seepage or leakage therefrom will not drain into the basements or cellars of adjacent properties.
(d) All tanks buried within buildings shall be not less than three (3) feet below the floor, measured from the top of the tank to the floor level directly above.
(e) The floor directly above such tanks, and for a distance of not less than two (2) feet on all sides above such tanks, shall be of reinforced concrete not less than six (6) inches in thickness, properly constructed and anchored to the floor construction to resist uplift.
(f) Gauge openings of such tanks shall be protected against vapor release and liquid overflow by means of spring loaded check valves, and against vapor release by extending the gauge wells to within three (3) inches of the bottoms of the tanks. All such tanks shall have approved fill and vent connections extended to an approved outdoor location.
(Ord. No. 991-49. Passed 6-27-49, eff. 6-27-49)