(a)   Any user subject to a National Categorical Pretreatment Standard set forth in this chapter, having applied for, received and operating under permit, after the compliance date of such Pretreatment Standard, or in the case of a new user, after commencement of the discharge to the City, shall submit to the City during the months of June and December, unless required more frequently by the City, a report indicating the nature and concentration, of prohibited or regulated substances in the effluent which are limited by such standards hereof. In addition, this report shall include a record of all measured or estimated average and maximum daily flow since the submittal of the permit application or the last report submitted. Flows shall be reported on the basis of actual measurement, provided however, where cost or feasibility considerations justify, the City may accept reports of average and maximum flows estimated by verifiable techniques. The City, for good cause shown considering such factors as local high or low flow rates, holidays, budget cycles, or other extenuating factors may authorize the submission of such reports on months other than those specified above.
   (b)   Reports of users shall contain all results of sampling and analysis of the discharge, including the flow and the nature and concentration, or production and mass where required by the City. The frequency of monitoring by the user shall be as prescribed in the applicable Pretreatment Standard of this chapter. All analyses shall be performed in accordance with 40 CFR, Part 136 and amendments thereto. Where 40 CFR, Part 136 does not include a sampling or analytical technique for the pollutant in question, sampling and analysis shall be performed in accordance with the procedures set forth in the EPA publication, Sampling and Analysis Procedures for Screening of Industrial Effluents for Priority Pollutants, April 1977, and amendments thereto, or with any other sampling and analytical procedures approved by the Administrator of the USEPA.
   (c)   Reports shall state whether the applicable pretreatment standards or requirements are being met on a consistent basis and, if not, what additional facilities and/or pretreatment is necessary to gain compliance with applicable pretreatment standards or requirements.
(Ord. 19-90. Passed 2-20-90.)