(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 § 51.011(A) within the time limitations specified by EPA, the state, the Control Authority, or the Pretreatment Coordinator, 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 Pretreatment Coordinator for review, and shall be acceptable to the Pretreatment Coordinator 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 Pretreatment Coordinator 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 require such other conditions as may be necessary to protect the POTW and determine the users' compliance with the requirements of this subchapter.
(2) The Pretreatment Coordinator 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) Grease, oil, and sand interceptors shall be provided when, in the opinion of the Pretreatment Coordinator, 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 Pretreatment Coordinator and shall be so located to be easily accessible for cleaning and inspection. Such interceptors shall be inspected, cleaned, and repaired regularly, as needed, by the user at their expense.
(4) Users with the potential to discharge flammable substances may be required to install and maintain an approved combustible gas detection meter, or other control device as deemed necessary by the Pretreatment Coordinator.
(C) Accidental discharge/slug control plans. At least once every two years, the Pretreatment Coordinator shall evaluate whether each permitted significant industrial user needs an accidental discharge/slug control plan. The Pretreatment Coordinator may require any user to develop, submit for approval, and implement such a plan. An accidental discharge/slug control plan shall address, at a minimum, the following:
(1) Description of discharge practices, including non-routine batch discharges;
(2) Description of stored chemicals;
(3) Procedures for immediately notifying the Pretreatment Coordinator and Control Authority of any accidental or slug discharge, as required by § 51.015(F); 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 areas, 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.
(D) Hauled wastewater.
(1) Septage waste may be introduced into the POTW only at locations designated by the Pretreatment Coordinator and Control Authority, and at such times as are established by the Pretreatment Coordinator and Control Authority. Such waste shall not violate § 51.011 or any other requirements established by the city. The Pretreatment Coordinator and/or Control Authority may require septic tank waste haulers to obtain wastewater discharge permits.
(2) Septage waste haulers must provide a waste-tracking form for every load. This form shall include, at a minimum, the name and address of the waste hauler, permit number, truck identification, names and addresses of sources of waste, and volume and characteristics of waste. The form shall identify the type of generator, known or suspected waste constituents, and whether any wastes are RCRA hazardous wastes.
(Ord. 1424, passed 4-28-03; Am. Ord. OR-2047-17, passed 4-24-17)