(a) Excessive BOD/TSS concentrations. A person discharging into the wastewater system industrial waste that exhibits none of the characteristics of wastewater prohibited in Section 49-43(b), but that has a concentration for a duration of 15 minutes that is greater than four times that of normal wastewater as measured by total suspended solids, BOD, or both or a concentration during a 24 hour period average of total suspended solids, BOD, or both in excess of normal wastewater, shall pretreat the industrial waste to meet the concentrations of normal wastewater; except, that the industrial waste may be accepted in the wastewater system for treatment by the city if all the following requirements are met:
(1) The industrial waste will not cause damage to the wastewater system.
(2) The industrial waste will not impair the city’s treatment processes.
(3) The BOD or total suspended solids concentration of industrial waste discharged does not cause the average BOD or total suspended solids of wastewater received at the wastewater treatment plant to increase above 250 mg/L.
(b) Sampling fees for determining compliance. A person determined to be discharging industrial waste must compensate the city for the cost of sampling and laboratory service expense required for monitoring the discharges for compliance with this article and applicable standards of the EPA. The director shall determine the number of samples and the frequency of sampling necessary to maintain surveillance of the discharges, provided that at least two sampling events will be conducted each calendar year.
(c) Sampling fees for industrial surcharge. A person discharging concentrations of BOD or total suspended solids in excess of 250 mg/L shall compensate the city for the cost of sample collections and laboratory service necessary when an industrial surcharge rate is established each year. This subsection does not apply to a waste management operator, or to a discharger who is billed under Section 49-50. (Ord. Nos. 19201; 21430; 21409; 26925; 28084)