(A) Pretreatment facilities. Users shall provide wastewater treatment as necessary to comply with this subchapter and shall achieve compliance with all categorical pretreatment standards, local limits, and the prohibitions set out in § 51.063(A) within the time limitations specified by EPA, the state, or the Board, whichever is more stringent. Any facilities necessary for compliance shall be provided, operated, and maintained at the user’s expense. Detailed plans describing such facilities and operating procedures shall be submitted to the Board for review, and shall be acceptable to the Board before such facilities are constructed. The review of such plans and operating procedures shall in no way relieve the user from the responsibility of modifying such facilities as necessary to produce a discharge acceptable to the city under the provisions of this subchapter.
(B) Additional pretreatment measures.
(1) Whenever deemed necessary, the Board may require users to restrict their discharge during peak flow periods, designate that certain wastewater be discharged only into specific sewers, relocate and/or consolidate points of discharge, separate sewage wastestreams from industrial wastestreams, and such other conditions as may be necessary to protect the POTW and determine the user's compliance with the requirements of this subchapter.
(2) The Board may require any person discharging into the POTW to install and maintain, on their property and at their expense, a suitable storage and flow-control facility to ensure equalization of flow. A wastewater discharge permit may be issued solely for flow equalization.
(3) Fats, grease, oil and/or sand interceptors shall be provided when, as determined by the Board, such interceptors are necessary for the proper handling of wastewater from commercial, industrial, governmental, and/or institutional users, which wastewater is likely to contain excessive amounts of fats, grease and/or oil, or sand. All such interceptors shall be of sufficient size and design and in accordance with applicable rules and regulations established by the Board from time to time. Those interceptors shall be so located to be reasonably accessible for cleaning and inspection. It shall be the responsibility and at the cost of the user and owner to inspect, clean and repair each interceptor as necessary to result in that interceptor being able to do the job for which it was designed and installed, and to insure that the cover is in place and securely closed at all times except as appropriate during use, inspection, cleaning and repair. Failure to maintain the interceptor in proper working order shall be cause for discontinuance of sewer service as determined by the Board.
(4) Users with the potential to discharge flammable substances may be required to install and maintain an approved combustible gas detection meter.
(C) Accidental discharge/slug control plans. At least once every two years, the Board shall evaluate whether each significant industrial user needs an accidental discharge/slug control plan. The Board may require any user to develop, submit for approval, and implement such a plan. Alternatively, the Board may develop such a plan for any user. An accidental discharge/slug control plan shall address, at a minimum, the following:
(1) Description of discharge practices, including nonroutine batch discharges;
(2) Description of stored chemicals;
(3) Procedures for immediately notifying the Board of any accidental or slug discharge; and
(4) Procedures to prevent adverse impact from any accidental or slug discharge. Such procedures include, but are not limited to, inspection and maintenance of storage ares, handling and transfer of materials, loading and unloading operations, control of plant site runoff, worker training, building of containment structures or equipment, measures for containing toxic organic pollutants, including solvents, and/or measures and equipment for emergency response.
(Ord. 35-C-92, passed 11-10-92; Am. Ord. 8-C-99, passed 8-10-99; Am. Ord. 12-C-03, passed 9-9-03; Am. Ord. 23-C-17, passed 11-28-17) Penalty, see § 51.999