Lincoln Municipal Code Art. VII Pretreatment of Wastewater

Users shall provide wastewater treatment as necessary to comply with the provisions of this chapter and shall achieve compliance with all categorical pretreatment standards, local limits, and the prohibitions set out in Section 13.08.810 within the time limitations specified by EPA, the state, or the city, 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 public works director for review and shall be acceptable to the public works director 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 chapter.

(Ord. No. 992B, § 1, 6-25-2019)

(a) Whenever deemed necessary, the public works 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 chapter.

(b) The public works 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. An individual wastewater discharge permit may be issued solely to require flow equalization.

(c) Grease, oil, and sand interceptors shall be provided when, in the opinion of the public works 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. All interception units shall be of a type and capacity approved by the public works director and shall comply with Section 13.08.370 and shall be so located to be easily accessible for cleaning and inspection. Such interceptors shall be inspected, cleaned, maintained and repaired in accordance with Section 13.08.350.

(d) Users with the potential to discharge flammable substances may be required to install and maintain an approved combustible gas detection meter.

(Ord. No. 992B, § 1, 6-25-2019)

The public works director will determine whether each SIU needs an accidental discharge/slug discharge control plan or other action to control slug discharges. The public works director 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. Alternatively, the public works director may develop such a plan for any user. An accidental discharge/slug discharge control plan shall address, at a minimum, the following:

(a) Description of discharge practices, including non-routine batch discharges;

(b) Description of stored chemicals;

(c) Procedures for immediately notifying the public works director of any accidental or Slug Discharge, as required by Section 13.08.868; 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. No. 992B, § 1, 6-25-2019)

(a) Septic tank waste may be introduced into the POTW only at locations designated by the public works director, and at such times as are established by the public works director. Such waste shall not violate Section 13.08.810, or any other requirements established by the city. The public works director may require septic tank waste haulers to obtain individual wastewater discharge permits.

(b) The public works director may require haulers of industrial waste to obtain individual wastewater discharge permits. The public works director may require generators of hauled industrial waste to obtain individual wastewater discharge permits. The public works director also may prohibit the disposal of hauled industrial waste. The discharge of hauled industrial waste is subject to all other requirements of this chapter.

(c) Industrial waste haulers may discharge loads only at locations designated by the public works director. No load may be discharged without prior consent of the public works director. The public works director may collect samples of each hauled load to ensure compliance with applicable standards. The public works director may require the industrial waste hauler to provide a waste analysis of each 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. No. 992B, § 1, 6-25-2019)