(A) All categorical IUs (CIUs) must, at a frequency determined by the District submit no less than twice per year (June and December) or on other dates specified by the District reports indicating the nature, concentration of pollutants in the discharge which are limited by 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) or pollution prevention alternative, the CIU must submit documentation required by the District or the pretreatment standard necessary to determine the compliance status of the CIU. All periodic compliance reports must be signed and certified in accordance with § 51.120.
(B) All wastewater samples must be representative of the CIU’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 CIU to keep its monitoring facility in good working order shall not be grounds for the CIU to claim that sample results are unrepresentative of its discharge. If a CIU subject to the reporting requirement in this section monitors any regulated pollutant at the appropriate sampling location more frequently than required by the District, using the procedures prescribed in § 51.119, the results of this monitoring shall be included in the report.
(Ord. 18-0017, passed 11-13-2018)