(A) Analytical requirements. All pollutant analyses, including sampling techniques, to be submitted as part of a wastewater discharge permit application or report shall be performed in accordance with the techniques prescribed in 40 C.F.R. part 136 unless otherwise specified in an applicable categorical pretreatment standard. If 40 C.F.R. part 136 does not contain sampling or analytical techniques for the pollutant in question, sampling and analyses must be performed in accordance with procedures approved by the EPA.
(Prior Code, § 28-263)
(B) Sample collection.
(1) Except as indicated in division (B)(2) below, the user must collect wastewater samples using flow-proportional composite collection techniques. In the event flow-proportional sampling is infeasible, the POTW Director 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.
(2) Samples for oil and grease, temperature, pH, cyanide, phenols, sulfides, and volatile organic compounds must be obtained using grab collection techniques.
(Prior Code, § 28-264)
(Ord. 11-00, passed 9-7-2000)