The contents from holding tanks for domestic waste only shall be allowed with the approval of the Utilities Director, at a rate set forth in the fee schedule established by the Utilities Director and approved by the City Manager. There shall be no mixing of holding tank wastewater with waste of any other type. A “holding tank” is defined as a nondischarging storage structure for sanitary wastewater of domestic origin with no connection to a lateral field or any other type of discharge point from the storage tank. (Ord. 20157 § 4, 12-4-18.)