Users shall ensure that all wastewater analyses required to be reported with the exception of flow, temperature, settleable solids, conductivity, and pH shall be performed by a laboratory registered or accredited under the provisions of Chapter 173-50 WAC. Sampling and analysis techniques used in collection, preservation, and analysis shall be in accordance with 40 CFR Part 136, unless otherwise specified in an applicable categorical pretreatment standard. Where 40 CFR Part 136 does not contain applicable sampling or analytical techniques for the pollutant in question, sampling and analyses shall be performed in accordance with procedures approved by the EPA or the Department. (Ord. 016/2021 § 2; Ord. 011/2004)