A. Applicable Requirements. Users which discharge to the POTW shall abide by all applicable wastewater monitoring requirements of this chapter, any applicable order, and any state or federal regulation or permit, including a state waste discharge or NPDES permit. The director may require self-monitoring as a requirement of discharge to the POTW or may conduct city of Monroe monitoring of any discharge to the POTW.

B. Categorical User Sampling Requirements. Categorical users with combined discharges shall measure flows and pollutant concentrations necessary to allow use of the combined waste stream formula of 40 CFR 403.6(e). Where feasible, such users shall sample immediately downstream from any pretreatment facilities, unless the Department determines end-of-pipe monitoring to be more stringent or applicable.

C. Noncategorical Users. All other users, where required to sample, shall measure the flows and pollutant concentrations necessary to evaluate compliance with pretreatment standards and requirements.

D. Data Required. Users which analyze wastewater samples shall record and report, with the sampling results, the information required by MMC 13.10.230(B). All required reports shall also certify that the samples are representative of normal work cycles and wastewater discharges from the user. Whenever a user analyzes wastewater samples for any regulated pollutant more frequently than required, using methodologies in 40 CFR Part 136, the results of such analyses shall be submitted with the next required wastewater discharge report. Reports containing incomplete information shall not demonstrate compliance with this chapter or a wastewater discharge permit. (Ord. 016/2021 § 2; Ord. 011/2004)