(A) Except as indicated in division (B) below, the user must collect wastewater samples using flow proportional composite collection techniques. In the event flow proportional sampling is infeasible or not warranted in the opinion of the Industrial Pretreatment Coordinator, the Industrial Pretreatment Coordinator may authorize the use of time proportional sampling or a minimum of four grab samples where the user demonstrates that this will provide a representative sample of the effluent being discharged or frequency of grab samples acceptable to the Industrial Pretreatment Coordinator. Alternate grab sampling procedures shall be approved by the approval authority. In addition, grab samples may be required to show compliance with instantaneous discharge limits.
(B) When required by the Industrial Pretreatment Coordinator, a user and/or industrial waste discharger shall install a control monitoring manhole together with such metering and other appurtenances, that shall be suitable to the Industrial Pretreatment Coordinator, in the building sewer to facilitate observation, sampling and measurement of the discharge. The control manhole and all appurtenances shall be constructed in accordance to plans approved by the Industrial Pretreatment Coordinator. These facilities shall be installed by the user, at his or her expense, and shall be maintained by the user including accessibility and safety.
(C) Samples for oil and grease, temperature, pH, cyanide, phenols, sulfides and volatile organic compounds must be obtained using grab collection techniques as outlined in 40 C.F.R. § 403.12(b)(5)(iii) or as indicated in division (A) above.
(Res. 1998-10-18-A, passed 10-19-1998; Ord. 180, passed 12-21-1998)