§ 41-34. Pretreatment of wastewater.

(a)

Pretreatment facilities. Each user shall provide wastewater pretreatment facilities as necessary to comply with its permit and this chapter and shall comply with all categorical pretreatment standards, local limits, and the prohibitions set out in this chapter within the time limitations specified by EPA, the state, or the city, whichever is more stringent. The user shall provide, operate, and maintain all facilities necessary for compliance at the users expense. The user shall provide detailed plans describing the facilities and operating procedures and submit them to the director for review before such facilities are constructed. When the director requests them, the user shall supply the director with plans and operating procedures for facilities existing prior to the effective date of this chapter The director's acceptance and review of the plans and operating procedures do not relieve the user from the responsibility to modify the facilities as necessary to produce only discharge acceptable to the city under the provisions of this chapter.

(b)

Additional pretreatment measures.

(1)

Whenever necessary, the director at his or her discretion may require a user to restrict its 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.

(2)

The director may require any person discharging into the POTW to install and maintain, on his or her property and at his or her expense, a suitable storage and flow-control facility to ensure equalization of flow. The director may require a wastewater discharge permit solely for flow equalization.

(3)

Each user shall provide grease, oil, and sand interceptors when, in the opinion of the director, they are necessary for the proper handling of wastewater containing excessive amounts of grease and oil or sand. Each user shall provide interception units of the type and capacity approved by the director and, shall locate them so that they are easily accessible for cleaning and inspection. Each user shall inspect, clean, and repair the interceptors regularly, as needed, at his or her expense.

(4)

The director may require a user with the potential to discharge flammable substances to install and maintain an approved combustible gas detection meter and to take whatever action to reduce flammables the director deems necessary or appropriate.

(c)

Accidental discharge/slug control plans. At least once every three (3) years or when a permit come up for renewal, the director shall evaluate whether each significant industrial user needs an accidental discharge/slug control plan. The director may require a user to develop, submit for approval, and implement such a plan. An SIU from whom the director requires an accidental discharge/slug control plan shall address in the plan, at a minimum, the following:

1.

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

2.

Description of stored chemicals;

3.

Procedures for immediately notifying the director and TRA of any accidental or slug discharge, as required by this chapter; and

4.

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.

(d)

Hauled wastewater. A user may introduce septage waste into the POTW only at locations designated by the director and at such times as are established by the director. No user shall introduce into the POTW waste that violates any applicable law. The director may require septic tank waste haulers to obtain wastewater discharge permits in addition to other permits that may be required (for example, waste hauler's permits).

(Ord. No. 8140, § 1, 3-20-03)