R 299.2955 Sewerage system operation and maintenance; general requirements.

Rule 55. (1) Sewerage systems must be operated and maintained at all times as efficiently as possible and in a manner that will minimize upsets and discharges of excessive pollutants. (2) The owner of the sewerage system shall provide an adequate operating staff that is qualified to carry out the operation, maintenance, and laboratory testing functions required to ensure compliance with the conditions of subrule (1) of this rule. (3) Wherever possible, maintenance of sewerage systems must not result in degradation of effluent quality. If degradation of effluent is unavoidable, maintenance must be programmed and scheduled during noncritical water quality periods and be carried out in a manner approved by the department. (4) All reasonable measures, including, if appropriate, the provision of shutoff valves adjacent to storage tanks, catchment areas, relief vessels, or entrapment dikes, must be taken for containment of accidental losses of concentrated solutions, acids, alkalies, salts, oils, or other polluting materials.