All private or public wash racks and/or floors or slabs used for steam cleaning, high pressure wash or cleaning of vehicles, vehicle parts, machinery, machinery parts, restaurant equipment or fixtures shall be adequately protected against storm or surface water runoff by a raised pad, bermed area and covered work area as approved by the superintendent. The drain shall discharge to the sanitary sewer through a pretreatment device of an approved design for this use. (Ord. 2836 § 1, 2008)