In the event that the quality and/or quantity of waste discharge by any facility is of such a character that in the opinion of the District Engineer, it will impose a more than normal maintenance and operation burden on the District works, the amount of the sewer service charge for such facility shall be determined by the Board and Section 5.04.190 shall not be applicable to such facility. (Ord. 70 §4, 1991; Ord. 11 §3.5, 1974; Ord. 4 §3.5, 1973)