All sand and grit removal facilities shall be installed, maintained, and operated by the discharger at their own expense. The facilities shall be kept in continuous operation at all times and shall be maintained to provide efficient operation. Dischargers may not use high volume flushing to push sand and grit from their facilities into the public sewer system. A service contractor qualified to perform cleaning is required for cleaning and removing of the particles that have settled out of the service line. All material removed shall be disposed of in accordance with all city, county, state, and federal regulations. (Ord. 5934 § 5, 2005; Ord. 5852 § 1, 2004.)