(A) Basement prohibited; floor level; construction of floor. No basement or excavation except grease pits shall be permitted under any service station building.
(1) The floor level shall be above grade so as to prevent the flow of liquids or vapors into the building.
(2) The floor shall be of concrete.
(B) Grease pits. Every greasing pit installed in a building or enclosed by three or more walls, shall be ventilated by a vent duct not less than six inches in diameter (or equivalent cross-sectional area if a non-circular duct is used). The duct shall start within four inches of the floor and shall extend on an upward diagonal or by an easy bend over to sidewall, thence straight up through the roof to a height sufficient to draw off gasoline vapors which may accumulate at bottom of pit. Abrupt bends must be avoided and all joints must be tight. The floor of the pit should pitch slightly toward the corner where the duct is located, to facilitate the flow of gases to the duct.
(1) Gasoline or naphtha shall never be used to clean out any pit, whether the pit is located within a building or enclosure, or outside in the open.
(2) No sewer connection shall be permitted from any greasing pit.
(3) If the pit is electrically lighted, globes shall be of vaporproof construction and wiring shall be in conduit.
(C) Grease traps required. If a sewer connection is made, an adequate grease trap shall be provided to intercept grease and oils. This shall be cleaned out at least every 30 days.
(D) Piping requirements. Piping shall conform to the requirements set out in this code.
(E) Fill pipe. Fill pipe shall be carried to a location outside of any building, as remote as possible from any doorway or other opening into any building and in no case closer than five feet from any such opening. The location shall be in a place where there is a minimum danger of breakage from trucks or other vehicles. Each fill pipe shall be closed by a screw cap or other tight-fitting cap, preferably of a type which can be locked. This cap should be locked at all times when filling or gauging process is not going on.
(`95 Code, § 119.13) Penalty, see § 10.99