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(A) Except as indicated in division (B) below or otherwise in this chapter or an industrial wastewater discharge permit, the user must collect wastewater samples using flow proportional composite collection techniques. In the event flow proportional sampling is infeasible, the 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. In addition, grab samples may be required to show compliance with instantaneous discharge limits.
(B) Samples for oil and grease, temperature, pH, cyanide, phenols, sulfides and volatile organic compounds must be obtained using grab collection techniques.
(C) In addition, the city expressly reserves the right to construct, install, operate and/or maintain off-site sampling and flow monitoring stations with respect to any user.
(Ord. 1433, passed 7-1-2002)