(A) Approval on pretreatment of waste flows. If any waters or wastes are proposed to be discharged to the public sewers, which waters contain the substances or possess the characteristics enumerated above, water resource recovery or pretreatment control facilities may need to be installed for an industry to attain compliance with the city's ordinance. Plans, specifications and any other pertinent information relating to wastewater pretreatment or control facilities are required to be submitted to the Murray Sewer System for review within ninety (90) days prior to installation. Changes to existing pretreatment or control facilities must also be submitted for review within ninety (90) days prior to installation.
(1) If any waters or wastes are proposed to be discharged to the public sewers, which waters contain the substances or possess the characteristics enumerated in § 52.31(B), the Murray Sewer System may condition approval on one or more of the following requirements:
(a) Pretreatment to an acceptable condition for discharge to the public sewers;
(b) Control over the quantities and rates of discharge; or
(c) Payment to cover the added cost of handling and treating the wastes not covered by existing taxes or sewer charges under provisions of this chapter.
(2) If the Murray Sewer System conditions approval on the pretreatment or equalization of waste flows, the design and installation of the plants and equipment shall be subject to the review and approval of the city and subject to the requirements of all applicable codes, ordinances and laws. Detailed plans describing such facilities and their operating procedures shall be submitted to the city for review and shall be acceptable to the Departments of Planning and Public Works and Utilities prior to the construction of the facilities (see subsection (A) above).
(B) Where pretreatment or flow equalization facilities are provided or required for any waters or wastes, the industry shall be solely responsible for the continued maintenance in satisfactory and effective operating condition of such facilities at industry expense. Upon direction from the Murray Sewer System, the Industry shall be responsible for modifying these facilities as necessary to produce an acceptable discharge under the provisions of this chapter. In the event essential maintenance requires bypass or if bypass occurs unexpectedly, the following becomes effective:
(1) An industrial user may allow any bypass, defined as the intentional diversion of waste streams from any portion of an industrial user's treatment facility, to occur only if it also is for essential maintenance to assure efficient operation and does not cause pretreatment standards or requirements to be violated. These bypasses must be submitted to the Pretreatment Coordinator at least ten (10) days before the date of the bypass if the industrial user knows in advance that such bypass is needed.
(2) If the bypass is unanticipated, the industrial user shall submit oral notice within twenty-four (24) hours from the time the industrial user becomes aware of the bypass. A written submission shall also be provided within five (5) days of the time the industrial user becomes aware of the bypass. The written submission shall contain the information required in 40 CFR 403.17. The Pretreatment Coordinator may waive the written report on a case-by-case basis if the oral report has been received within twenty-four (24) hours.
(C) Grease, oil, and sand interceptors. Grease, oil, and sand interceptors shall be provided when, in the opinion of the Pretreatment Coordinator, they are necessary for the proper handling of liquid wastes containing floatable grease or oil in excessive amounts, or any flammable wastes, sand, or other harmful ingredients; except that such interceptors shall not be required for private living quarters or dwelling units. All interceptors shall be constructed of impervious materials capable of withstanding abrupt and extreme changes in temperatures and shall be of substantial construction, gas-tight, water- tight, and equipped with easily removable covers, and shall be located as to be readily and easily accessible for cleaning and inspection. In maintaining these interceptors, the owner(s) shall be responsible for the proper removal and disposal by appropriate means of the captured material and shall maintain records of the dates, and means of disposal. The Pretreatment Coordinator may require reporting of such information for review. Any removal and hauling of the collected material not performed by the owner(s) or their personnel must be performed by currently licensed waste disposal firms. Interceptors shall also comply with applicable regulations of the Calloway County Health Department.
(D) All new and existing industries discharging to the Bee Creek Water Resource Recovery Facility that fall into a category defined by USEPA in Title 40 of the Code of Federal Regulations, must comply with the applicable pretreatment standards. Where the discharge standards of the City of Murray Sewers Ordinance, the industrial user permit, or the pretreatment standards conflict, the most stringent of the three shall apply.
(Ord. 2024-1867, passed 7-11-24)