A. Any user that is issued a permit under this chapter and performs self-monitoring shall submit to the city during the months of June and December, unless required on other dates or more frequently by the city, a report indicating the nature of the effluent over the previous reporting period. The frequency of monitoring shall be as prescribed within the permit. At a minimum, except for zero discharge users, middle tier CIUs, and NSCIUs, users shall sample their discharge at least twice per year.

B. The report shall include a record of the concentrations (and mass if specified in the wastewater discharge permit) of the pollutants listed in the wastewater discharge permit that were measured and a record of all flow measurements (average and maximum) taken at the designated sampling locations, and shall also include any additional information required by this chapter or the wastewater discharge permit. Production data shall be reported if required by the wastewater discharge permit. Both daily maximum and average concentration (or mass, where required) shall be reported.

If a user sampled and analyzed more frequently than what was required by the city or by this chapter, using methodologies in 40 CFR Part 136, it must submit all results of sampling and analysis of the discharge during the reporting period.

C. Any user subject to equivalent mass or concentration limits established by the city or by unit production limits specified in the applicable categorical standards shall report production data as outlined in Section 14.40.360(B).

D. Zero discharge users shall submit periodic reports as required by the director stating that no process waste has been discharged to the POTW.

E. Middle tier significant CIUs and NSCIUs shall submit reports as required in their control mechanisms.

F. If the city calculated limits to factor out dilution flows or nonregulated flows, the user will be responsible for providing flows from the regulated process flows, dilution flows and nonregulated flows.

G. Flows shall be reported on the basis of actual measurement; provided, however, that the city may accept reports of average and maximum flows estimated by verifiable techniques if the city determines that an actual measurement is not feasible.

H. Sampling shall be representative of the user’s daily operations and shall be taken in accordance with the requirements specified in Article V of this chapter.

I. The city may require reporting by users that are not required to have an industrial wastewater discharge permit if information or data is needed to establish a sewer charge, determine the treatability of the effluent or determine any other factor that is related to the operation and maintenance of the sewer system.

J. The city may require self-monitoring by the user or, if requested by the user, may agree to perform the periodic compliance monitoring needed to prepare the periodic compliance report required under this section. If the city agrees to perform such periodic compliance monitoring, it may charge the user for such monitoring, based upon the costs incurred by the city for the sampling and analyses. Any such charges shall be added to the normal sewer charge and shall be payable as part of the utility bills. The city is under no obligation to perform periodic compliance monitoring for a user. (Ord. 3070-08 § 4.3, 2008.)