Article IV. Reporting and Monitoring Requirements
10.20.240 Reporting requirements for industrial users.
(1) Final Compliance Report. Within 90 days following the date for final compliance by the industrial user with applicable categorical pretreatment standards and requirements set forth in this chapter or a wastewater discharge permit, or within 30 days following commencement of the introduction of wastewater into the POTW by a new source, any industrial user subject to this chapter shall submit to the City a report indicating the nature and concentration of all prohibited or regulated substances contained in its discharge, and the average and maximum daily flow in gallons. The report shall include a statement, signed by an authorized representative of the industrial user and certified by a qualified professional, indicating whether pretreatment standards are being met on a consistent basis and, if not, whether additional operations and maintenance (O&M) and/or additional pretreatment is required in order to meet the pretreatment standards and requirements.
(2) Periodic Compliance Reports.
(a) Any significant industrial users subject to a pretreatment standard shall, at a frequency determined by the Director, but in no case less than twice per year, submit a report indicating the nature and concentration of pollutants in the discharge that are limited to such pretreatment standards and the measured or estimated average and maximum daily flows for the reporting period. In cases where the pretreatment standard requires compliance with a best management practice (BMP), the user must submit documentation required by the Director or the pretreatment standard necessary to determine the compliance status of the user. All periodic compliance reports must be signed and certified in accordance with MMC 10.20.340.
(b) Reports of industrial 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 industrial user shall be as prescribed within the wastewater discharge permit. If an industrial user monitors any pollutant more frequently than required by the wastewater discharge permit, using the procedures prescribed in this section, the results of this monitoring shall be included in the report.
(c) The City may authorize an industrial user subject to a categorical pretreatment standard to forego sampling of a pollutant regulated by a categorical pretreatment standard if the industrial user has demonstrated through sampling and other technical factors that the pollutant is neither present nor expected to be present in the discharge, or is present only at background levels from intake water and without any increase in the pollutant due to activities of the industrial user. Any grant of the monitoring waiver by the Director shall be included as a condition in the user’s permit. This authorization is subject to the industrial user meeting the conditions specified in 40 C.F.R. § 403.12(e)(2), as amended.
(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 that sample results are unrepresentative of its discharge. (Ord. 106 § 7(1), passed 10-9-2012; Code 2014 § 52.07(A))