All pollutant analyses, including sampling techniques, shall be performed in accordance with the techniques prescribed in 40 CFR Part 136, unless otherwise specified in an applicable categorical pretreatment standard. If 40 CFR 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.

All analyses performed to establish compliance and used in compliance reporting shall be performed by a laboratory accredited by the Washington State Department of Ecology Quality Assurance Division in accordance with Chapter 173-50 WAC. Laboratories must be accredited for the analyses for which they are performing.

To ensure that the reported data is valid for determining compliance with requirements, all data shall have a detection level (DL) no greater than twenty-five percent of the regulatory limit included in this chapter or applicable state or federal regulation (i.e., for Pb, with a regulatory limit of 1.89 mg/L, the DL shall be no greater than 0.47 mg/L). (Ord. 3070-08 § 5.2, 2008.)