A. No person shall discharge or cause to be discharged any industrial wastewaters directly or indirectly to sewerage facilities owned by the city without first obtaining a city permit for industrial wastewater discharge.

B. The permit for industrial wastewater discharge may require pretreatment of industrial wastewaters before discharge, restriction of peak flow discharges, discharge of certain wastewaters only to specified sewers of the city, relocation of point of discharge, prohibition of discharge of certain wastewater components, restriction of discharge to certain hours of the day, payment of additional charges to defray increased costs of the city created by the wastewater discharge and such other conditions as may be required to effectuate the purpose of this chapter. Specific discharge limits, as specified in the national categorical standards, shall be included in each permit: provided, however, that if no such limit has been established, the city engineer shall ascertain the limit to be applied to the discharger and such limit shall be incorporated in the permit. Those limits set by the city engineer pursuant to subsection B of Section 14.12.220 of this chapter shall be no less stringent than applicable state and national categorical standards. Effluent discharge limits may include best management practices based on applicable pretreatment standards.

C. No person shall discharge industrial wastewaters in excess of the quantity or quality limitations set by the permit for industrial wastewater discharge. Any person desiring to discharge wastewaters or use facilities which are not in conformance with the industrial wastewater permit or desiring to change its discharge parameters, shall apply to the city for an amended permit. An amended permit shall be secured before discharging at limits in excess of the current permit condition. New or increased contributions of pollutants to the city sewerage system by industrial users, where such contribution do not meet applicable national pretreatment standards and the requirements set forth in this chapter or where such contributions would cause the city to violate its waste discharge requirements, are prohibited, and no amended permit shall be issued for such contributions.

D. A schedule for complying with any industrial effluent limitations, self-monitoring requirements or other requirements deemed necessary by the city engineer to insure compliance with city, county, state or federal rules and regulations shall be submitted to the city for approval. The city engineer may require compliance schedule progress reports, a report on final compliance with effluent limitations and standards, and periodic reports on continued compliance.

E. Requirements to control slug discharge, if determined by the city to be necessary. The city engineer shall evaluate whether each significant industrial user needs an accidental discharge/slug control plan. The city engineer may require any user to develop, submit for approval and implement such a plan. Alternatively, the city engineer may develop such a plan for any user. An accidental discharge/slug control plan shall address, at a minimum, the following: