(A) (1) Any user subject to a pretreatment standard, after the compliance date of the pretreatment standard, or, in the case of a new user, after commencement of the discharge into the POTW shall submit to the Water and Sewer Commission no less than twice per year unless the Commission samples and provides analyses for the User, or unless required more frequently in the pretreatment standard or by the wastewater contribution permit, a report indicating the nature and concentration, of pollutants in the effluent which are limited by the pretreatment standards, and the measured or estimated average and maximum daily flows for the reporting period. Significant Industrial Users are required to perform four (4) consecutive day testing during the months of June and December, with reporting to the Commission in July and January. In addition, this report shall include a record of all measured or estimated average and daily flows for the reporting period. In cases where the Pretreatment Standard requires compliance with a Best management Practice (BMP) or pollution alternative, the User must submit documentation required by the Manager and/or Director of Wastewater Operations or the Pretreatment Standard necessary to determine the compliance status of the User.. At the discretion of the Commission and in consideration of those factors as local high or low flow rates, holidays, budget cycles, and the like, the Commission may agree to alter the months during which the above reports are to be submitted.
(2) Significant Industrial Users must notify the Manager and/or Director of Wastewater Operations violations of restricted discharge limitations within twenty-four (24) hours of becoming aware of the violations. The User shall also repeat the sampling and analysis and submit the results of the repeat analysis to Manager and/or Director of Wastewater Operations within thirty (30) days after becoming aware of the violation(s). If the Commission performed the sampling analysis in lieu of the Industrial user, the Commission may perform the repeat sampling and analysis. In this case, resampling by the Industrial User is not required if the Commission performs sampling at the User’s facility at least once a month, or if the Commission performs sampling at the User between the time when the initial sampling was conducted and the time when the User and the Commission receives the result of this sampling, or if the Commission has performed the sampling and analysis in lieu of the Industrial User. The Commission may notify the Industrial User of the violation and require the Industrial User to start demand monitoring in accordance with § 31.137. If the Commission performed the sampling and analysis in lieu of the Industrial user, the Commission shall perform the repeat sampling and analysis unless it notifies the User of the violation and requires the user to perform the repeat sampling and analysis. Any discharges of prohibited discharges shall be reported immediately in accordance with § 31.060.
(3) Significant Industrial Users are required to notify the Manager and/or Director of Wastewater Operations immediately of any changes at its facility affecting the potential for a slug discharge.
(B) The Commission may impose mass limitations on users where their imposition is appropriate. In those cases, the report required by subsection (A) above shall indicate the mass of pollutants regulated by pretreatment standards in the effluent of the user. These reports shall contain the results of sampling and analysis of the discharge, including the flow and the nature and concentration, or production and mass where requested by the Commission of pollutants contained therein which are limited by the applicable pretreatment standards. The frequency of monitoring shall be prescribed in the applicable pretreatment standard. All analyses shall be performed by a laboratory acceptable to the Commission. Analytical procedures shall be in accordance with procedures established by the U.S. EPA Administrator pursuant to Section 304(g) of the Act and contained in 40 CFR, Part 136 and amendments thereto or with any other test procedures approved by the U.S. EPA Administrator. Sampling shall be performed in accordance with the techniques approved by the U.S. EPA Administrator.
(C) 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 U.S. EPA Administrator.
(D) All wastewater samples must be representative of the User’s discharge. Wastewater monitoring and flow measurement facilities shall be properly operated, kept clean, and maintained in good working order at all times. The failure of a user to keep its monitoring facility in good working order shall not be grounds for the user to claim the sampling results are unrepresentative of its discharge.
(Ord. - -, passed 6-7-84; Am. Ord. 91-07-18, passed 7-18-91; Am. Ord. 2011-11-03, passed 11-3-11)