8-4-3: PRETREATMENT OF WASTEWATER:
8-4-3-1: PRETREATMENT FACILITIES:
Users shall provide wastewater treatment as necessary to comply with this chapter, and shall achieve compliance with all categorical pretreatment standards, local limits, and the prohibitions set out in section 8-4-2-1 of this chapter, within the time limitations specified by EPA, the state, or the manager, 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 manager for review, and shall be acceptable to the manager 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 SGRWRF under the provisions of this chapter. (Ord. 2016-11-005, 11-10-2016)
8-4-3-2: ADDITIONAL PRETREATMENT MEASURES:
A. Whenever deemed necessary, SGRWRF 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 waste streams from industrial waste streams, and such other conditions as may be necessary to protect the POTW, and determine the user’s compliance with the requirements of this chapter.
B. The manager 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. An individual wastewater discharge permit may be issued solely for flow equalization.
C. Grease, oil, and sand interceptors, such as described by the International Plumbing Code, shall be provided when, in the opinion of the manager, they are necessary for the proper handling of wastewater containing excessive amounts of liquid waste, floatable grease, oil, or sand; except, such interceptors shall not be required for residential users. All interception units shall be of a type and capacity approved by the manager, and shall be located to be easily accessible for cleaning and inspection, and away from building entrances and exits. Such interceptors shall be cleaned, repaired, and maintained by the user at its expense.
D. Users with the potential to discharge flammable substances may be required to install and maintain an approved combustible gas detection meter.
E. Sampling manholes shall be located in an area to allow for ease of cleaning, sampling and inspection by the user and SGRWRF. If located in a parking area, parking shall not be allowed on or over the sampling manhole. (Ord. 2016-11-005, 11-10-2016)
8-4-3-3: ACCIDENTAL DISCHARGE/SLUG DISCHARGE CONTROL PLANS:
The pretreatment coordinator shall evaluate whether each SIU needs an accidental discharge/slug discharge control plan, or other actions to control slug discharges. The pretreatment coordinator may require any user to develop, submit for approval, and implement, such a plan, or take such other action that may be necessary to control slug discharges. An accidental discharge/slug discharge control plan shall address, at a minimum, the following:
A. Description of discharge practices, including nonroutine batch discharges;
B. List and description of stored chemicals;
C. Procedures for immediately notifying the manager of any accidental or slug discharge, as required by section 8-4-6-6 of this chapter; and
D. 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. 2016-11-005, 11-10-2016)
8-4-3-4: HAULED WASTEWATER:
A. Septic tank waste may be introduced into the POTW only at locations designated by the manager, and at such times as are established by the manager. Such waste shall not violate section 8-4-2 of this chapter or any other requirements established by SGRWRF. The manager may require septic tank waste haulers to obtain individual wastewater discharge permits.
B. The discharge of hauled industrial wastes as “industrial septage” requires prior approval and an individual wastewater discharge permit from the SGRWRF. The manager shall have authority to prohibit the disposal of such wastes, if disposal would interfere with the treatment plant operations or violate section 8-4-2 of this chapter. Waste haulers are subject to all other sections of this chapter.
C. 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, truck identification, names and addresses of sources of waste, and volume and characteristics of waste. (Ord. 2016-11-005, 11-10-2016)