(A) All significant industrial users shall, at a frequency determined by the POTW Director but in no case less than once every six months, submit a report indicating the nature and 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. Sampling and analysis must be performed in accordance with procedure set out in §§ 51.069 and 51.070. All periodic compliance reports must be signed and certified in accordance with § 51.051(C).
(B) 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.
(C) If a user subject to the reporting requirement in this section monitors any pollutant more frequently than required by the POTW Director, using the procedures prescribed in § 51.069, the results of this monitoring shall be included in the report.
(D) The Director may impose mass limitations on users which are using dilution to meet applicable pretreatment standards or requirements, or in other cases where the imposition of mass limitations are appropriate. In such cases, the report required by subparagraph (i) of this paragraph shall indicate the mass of pollutants regulated by pretreatment standards or requirements in the effluent of the user.
(Ord. 1994-79, passed 11-21-94; Am. Ord. 2007-45, passed 6-4-07)