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No user shall ever increase the use of process water for the purpose of diluting a discharge, or in any other way attempt to dilute a discharge. The city manager may impose mass limitations on users suspected of using dilution to meet applicable pretreatment standards or requirements, or in other cases when the imposition of mass limitations is appropriate.
(`64 Code, Sec. 25-20) (Ord. No. 2494)
DIVISION 4. PRETREATMENT OF INDUSTRIAL WASTEWATER
Users shall provide wastewater pretreatment as necessary to comply with this article and shall achieve compliance with all categorical pretreatment standards, local limits and the prohibitions set out in section 19-25 of this article within the time limitations specified by EPA, the State, or the city manager, whichever is more stringent. Any facilities necessary for compliance shall be provided, operated, and maintained at user's expense. Detailed plans describing such facilities and operating procedures shall be submitted to the city manager for review, and shall be acceptable to the city manager before such facilities are constructed. 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 a discharge acceptable to the city manager under the provisions of this article.
(`64 Code, Sec. 25-21) (Ord. No. 2494)
(A) Whenever deemed necessary, the city manager 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 domestic waste streams from industrial waste streams, and such other conditions as may be necessary to protect the system and determine the user's compliance with the requirements of this article.
(B) The city manager may require any person discharging into the system to install and maintain, on their property and at their expense, a suitable storage and flow-control facility to ensure active management of flow. An IWD permit may be issued solely for flow regulation.
(C) Users shall provide gravity separation devices when, in the opinion of the city manager, they are necessary for the proper handling of wastewater containing excessive amounts of oil and grease or sand. All gravity separation devices shall be of a type and capacity approved by the city manager and shall be so located to be easily accessible for cleaning and inspection. Such devices shall be inspected, cleaned, and repaired regularly, as needed, by the user at user's expense.
(D) The city manager may require users with the potential to discharge flammable substances to install and maintain an approved combustible gas detection meter.
(E) All dental dischargers are required to maintain a current industrial wastewater discharge permit.
(`64 Code, Sec. 25-22) (Ord. No. 2494, 2997)
All domestic wastewater including, but not limited to, those from restrooms, showers and drinking fountains shall be kept separate from all industrial wastewater until the industrial wastewater has passed through any required pretreatment system and/or monitoring facility.
(`64 Code, Sec. 25-23) (Ord. No. 2494)
(A) Each user shall provide protection from accidental discharge of prohibited materials, other regulated pollutants or wastewater called out in this article or any other materials in concentration or quantities of which could be detrimental to the system, its operation or personnel. Each floor drain or floor sink located in an area where regulated chemicals are stored or used shall be protected in a manner approved by the city manager to prevent uncontrolled or accidental discharges of these regulated constituents from directly entering the system. Facilities to prevent accidental discharge shall be provided and maintained at the owner's and/or operator's expense. Detailed plans in the form of a spill prevention, control, and countermeasures plan (showing facilities and operating procedures to provide this protection) shall be submitted to the city manager for review and approval prior to construction of said facilities. Such review and approval of plans and operating procedures shall not relieve the user from the responsibility of said facilities as necessary to meet the other requirements of this article.
(B) A notice shall be permanently posted on the user's bulletin board or other prominent place advising employees whom to call in the event of a dangerous discharge. Employers shall ensure that all employees who may cause or suffer such a dangerous discharge to occur are advised of the emergency notification procedure.
(C) Any user who causes or discovers a slug discharge of regulated pollutants or wastewater into the system shall immediately telephone the city manager in order that corrective action may be taken to protect the system, its operation and personnel. In addition, the person responsible for the discharge of the wastes or wastewater shall file a written report to the city manager, detailing the date, time and cause of the accidental discharge, the quantity and characteristics of the discharge and corrective action taken to prevent future discharges. The report shall be filed within five days of the occurrence of the discharge.
(`64 Code, Sec. 25-24) (Ord. No. 2494)
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