§ 21-312  PRETREATMENT OF WASTEWATER.
   (A)   Pretreatment facilities. Users shall provide necessary wastewater treatment as required to comply with all federal categorical pretreatment standards within the time limitations as specified by the POTW Director. Any facilities required to pretreat wastewater to a level acceptable to the town shall be provided, operated, and maintained at the user’s expense. Detailed plans showing the pretreatment facilities and operating procedures shall be submitted to the town for review, and shall be acceptable to the POTW Director before construction of the facility. The review of such plans and operating procedures will, in no way, relieve the user from the responsibility of modifying the facility as necessary to produce an effluent acceptable to the town under the provisions of this article. Any subsequent changes in the pretreatment facilities, or method of operation, shall be reported to, and be acceptable to, the POTW Director prior to the user’s initiation of the changes.
   (B)   Additional pretreatment standards.
      (1)   To equalize flows, and to avoid temporary overloads, any person who discharges into the sanitary sewer system waste having a volume in excess of 25,000 gallons in any 24-hour period may be required by the town to construct suitable storage tanks, or equivalent devices according to the town specifications relating to the type of construction, storage capacity, and similar matters. The control of the volume of discharges of waste shall be by a waterworks-type rate controller, or equivalent device, the setting and operations of which shall be subject to the reasonable direction of the administrator.
      (2)   Whenever the total volume of wastes to be discharged by any person in any one day has considerable variation in pollutional value, such person may be required to construct holding, or storage, tanks in order to control the discharge of wastes over a 24-hour period. Such tanks shall be in duplicate, and be so equipped as to mix the waste so thoroughly that its quality will be uniform when discharged into the sanitary sewer system.
      (3)   Grease, oil, and sand interceptors shall be provided when, in the opinion of the POTW Director, they are necessary for the proper handling of wastewater containing excessive amounts of grease and oil, or sand, except that such interceptors shall not be required for residential users. All interception units shall be of type and capacity approved by the POTW Director, and shall be so located as to be easily accessible for cleaning and inspection. Such interceptors shall be inspected, cleaned, and repaired regularly, as needed, by the person at his or her expense.
      (4)   Persons with the potential to discharge flammable substances may be required to install, and maintain, an approved combustible gas detection meter.
(Ord. 33-2002, passed 10-21-2002)