Loading...
Gasoline, benzine, naphtha, and other volatile, flammable or explosive wastes shall not discharge into a house sewer, public sewer, or sewage treatment plant. Such wastes shall be intercepted in approved triple basins having a liquid retention of not less than 2 cubic feet (0.19 m3) each, and the volatile, flammable or explosive constituents removed. The installer of the triple basins and the owner of the property shall ensure that such triple basins are installed and operated in accordance with the manufacturer's instructions. Every system of basins within buildings shall be constructed of approved fiberglass, a high-density polyethylene, extra heavy cast iron or equally durable material. A heavy iron cover shall be securely bolted into place and made gas-tight with a soft metallic gasket. The outlet from such basins and the inlet of the first basin shall be trapped with a seal of not less than 4 inches (100 mm). The inlet trap of the first basin shall be omitted when floor drains are individually trapped. A vent pipe of not less than 2 inches (50 mm) in diameter shall be connected to the basins, not less than 4 inches above the top of the outlet and extended independently to the outer air.
(Amend Coun. J. 7-29-15, p. 3537, § 4)
In areas of garages where motor fuels are dispensed or where motor vehicles are serviced, each floor drain shall be properly trapped. In other garage areas or parking facilities, floor drains need not be trapped. Floor drains above the level of the basins shall connect to a stack extending independently to the outer air and the vents of the basins shall be connected 6 inches (152 mm) or higher than the lowest floor drain.
A mixture of treated or untreated light and heavy liquids with various specific gravities shall be separated in approved receptacle. Separators shall be designed in accordance with Sections 18-29-1003.7.1 and 18-29-1003.7.2.
Where automobiles are serviced, greased, repaired or washed or where gasoline is dispensed, separators shall have a minimum capacity of 6 cubic feet (0.17 m
3
) for the first 100 square feet (9.3 m
2
) of area to be drained into the separator. Parking garages in which servicing, repairing or washing is not conducted, and in which gasoline is not dispensed, shall require a triple basin. Areas of commercial garages utilized only for storage of automobiles are required to be drained through a triple basin.
Commercial laundries shall be equipped with an interceptor with a wire basket or similar device, removable for cleaning, that prevents passage into the drainage system of solids 1/2 inch (12 mm) or larger in size, string, rags, buttons, or other materials detrimental to the public sewage system.
Loading...