13.12.100 Pretreatment of wastewater.
(1) Pretreatment Facilities. Industrial users shall provide necessary wastewater treatment as required to comply with this chapter and shall achieve compliance with all categorical pretreatment standards, local limits and the prohibitions set out in NBCC 13.12.090 within the time limitations specified by the superintendent. Any facilities required to pretreat wastewater to a level acceptable to the city shall be provided, operated, and maintained at the industrial user’s expense. Detailed plans showing the pretreatment facilities and operating procedures shall be submitted to the city for review, and shall be acceptable to the city before construction of the facility.
(a) 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 an acceptable discharge to the city under the provisions of this chapter.
(2) Additional Pretreatment Measures. Whenever deemed necessary, the superintendent may require industrial users to restrict the industrial user’s 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 municipal wastewater system and determine the industrial user’s compliance with the requirements of this chapter.
(a) Each person discharging into the municipal wastewater system greater than 100,000 gallons per day or greater than five percent of the average daily flow in the system, whichever is lesser, may be required by the superintendent to install and maintain on his property and at his expense a suitable storage and flow control facility to insure equalization of flow over a 24-hour period. The facility shall have a capacity for at least 50 percent of the daily discharge volume and shall be equipped with alarms and a rate of discharge controller, the regulation of which shall be directed by the superintendent. A wastewater permit may be issued solely for flow equalization.
(b) Grease, oil and sand interceptors shall be provided when, in the opinion of the superintendent, they are necessary for the proper handling of wastewater containing excessive amounts of grease, flammable substances, sand, or other harmful substances, except that such interceptors shall not be required for residential users. All interception units shall be of type and capacity approved by the superintendent 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 owner, at his expense.
(c) Industrial users with the potential to discharge flammable substances may be required to install and maintain an approved combustible gas detection meter.
(3) Spill Prevention Plans. Industrial users shall provide protection from accidental discharge of materials which may interfere with the municipal wastewater system by developing spill prevention plans. Facilities necessary to implement these plans shall be provided and maintained at the owner’s or industrial user’s expense. Spill prevention plans, including the facilities and the operating procedures, shall be approved by the city before implementation of the plan.
(a) Industrial users that store hazardous substances shall not contribute to the municipal wastewater system after the effective date of this chapter unless a spill prevention plan has been approved by the city. Approval of such plans shall not relieve the industrial user from complying with all other laws and regulations governing the use, storage, and transportation of hazardous substances.
(4) Tenant Responsibility. Any person who shall occupy the industrial user’s premises as a tenant under any rental or lease agreement shall be jointly and severally responsible for compliance with the provisions of this chapter in the same manner as the owner.
(5) Separation of Domestic and Industrial Wastestreams. All new and domestic wastewaters from rest rooms, showers, drinking fountains, etc., unless specifically included as part of a categorical pretreatment standard, shall be kept separate from all industrial wastewaters until the industrial wastewaters have passed through a required pretreatment system and the industrial user’s monitoring facility. When directed to do so by the superintendent, industrial users must separate existing domestic wastestreams.
(6) Hauled Wastewater. Septic tank waste (septage) will be accepted into the municipal wastewater system at a designated receiving structure within the treatment plant area, and at such times as are established by the superintendent provided such wastes do not contain toxic or hazardous pollutants, and provided such discharge does not violate any other requirements established by the city. Permits for individual vehicles to use such facilities shall be issued by the superintendent.
(a) All waste haulers, regardless of the origin of the hauled wastes, shall be considered “industrial users” for the purposes of this chapter.
(b) The discharge of industrial wastes as “industrial septage” requires prior approval and wastewater permit from the city. The superintendent shall have authority to prohibit the disposal of such wastes, if such disposal would interfere with the treatment plant operation.
(c) Fees for the discharge of septage will be established as part of the user fee system as authorized in NBCC 13.12.200(1), Pretreatment Charges and Fees.
(7) Vandalism. No person shall maliciously, willfully or negligently break, damage, destroy, uncover, deface, tamper with or prevent access to any structure, appurtenance or equipment, or other part of the municipal wastewater system. Any person found in violation of this requirement shall be subject to the sanctions set out in NBCC 13.12.180, Judicial enforcement remedies. (Ord. 1770 § 2, 1991; Ord. 1104 § 8(B), 1958)