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The city reserves the right to establish limitations and requirements which are more stringent than those required by either state or federal regulation if deemed necessary to comply with the objectives presented in § 15-121 of this division and specific prohibitions in § 15-126 of this division, as is allowed by 40 C.F.R. § 403.4.
(Ord. passed 5-17-94; Am. Ord. passed 11-20-12)
No user shall ever increase the use of process water or, in any way, attempt to dilute a discharge as a partial or complete substitute for adequate treatment to achieve compliance with the limitations contained in the National Categorical Pretreatment Standards, unless expressly authorized by an applicable pretreatment standard, or in any other pollutant specific limitation developed by the city or state.
(Ord. passed 5-17-94; Am. Ord. passed 11-20-12)
(A) Pretreatment facilities. Users shall provide wastewater treatment as necessary to comply with this division and wastewater permits issued under § 15-150 of this division and shall achieve compliance with all National Categorical Pretreatment Standards, local limits, and the prohibitions set out in § 15-126 of this division within the time limitations as specified by EPA, the state, or the POTW Director, whichever is more stringent. Any facilities necessary for compliance 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 city for review, and shall be approved by the POTW Director before construction of the facility. The review of such plans and operating procedures shall in no way relieve the user from the responsibility of modifying the facility as necessary to produce an effluent acceptable to the city under the provisions of this division. Any subsequent changes in the pretreatment facilities or method of operation shall be reported to and be approved by the POTW Director prior to the user’s initiation of the changes.
(B) Additional pretreatment measures.
(1) Whenever deemed necessary, the POTW Director 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 division.
(2) The POTW Director 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) (a) 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.
(b) All interception units shall be of type and capacity approved by the POTW Director 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.
(Ord. passed 5-17-94; Am. Ord. passed 11-20-12)
(A) The POTW Director shall evaluate whether each significant industrial user needs a plan or other action to control and prevent slug
discharges and accidental discharges as defined in § 15-122. All SIUs must be evaluated within one year of being designated an SIU. The POTW Director may require any user to develop, submit for approval, and implement such a plan or other specific action. Alternatively, the POTW Director may develop such a plan for any user.
(C) 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 POTW Director of any accidental or slug discharge, as required by § 15-161 of this division; 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.
(Ord. passed 5-17-94; Am. Ord. passed 10-20-09; Am. Ord. passed 11-20-12)
(A) Septic tank waste may be introduced into the POTW only at locations designated by the POTW Director, and at such times as are established by the POTW Director. Such waste shall not violate subdivision (B) of this division or any other requirements established by the city. The POTW Director may require septic tank waste haulers to obtain wastewater discharge permits.
(B) The POTW Director shall require haulers of industrial waste to obtain wastewater discharge permits. The POTW Director may require generators of hauled industrial waste to obtain wastewater discharge permits. The POTW Director also may prohibit the disposal of hauled industrial waste. The discharge of hauled industrial waste is subject to all other requirements of this division.
(C) Industrial waste haulers may discharge loads only at locations designated by the POTW Director. No load may be discharged without prior consent of the POTW Director. The POTW Director may collect samples of each hauled load to ensure compliance with applicable standards. The POTW Director may require the industrial waste hauler to provide a waste analysis of any load prior to discharge.
(D) Industrial waste haulers must provide a waste tracking form for every load. This form shall include, at a minimum, the name and address of the industrial 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 industry, known or suspected waste constituents, and whether any wastes are RCRA hazardous wastes.
(Ord. passed 5-17-94)
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