Section NR 106.995 - Sampling and laboratory analysis requirements(1) The permittee shall collect samples in accordance with the requirements in the permit. The department may require either grab or composite samples as a permit condition. If the permittee uses a composite sampler, an equipment blank is required. Note: If the permittee uses a composite sampler, it is recommended the permittee contact their department compliance representative prior to sample collection for additional sampling information.
(2) The laboratory performing the analyses on any samples shall be certified for the applicable PFAS compounds in the aqueous matrix by the Wisconsin Laboratory Certification Program established under s. 299.11, Stats., in accordance with s. NR 149.41. Note: If the EPA Office of Water publishes a 1600 series isotope dilution method for the analysis of PFAS in wastewater, the department recommends use of the EPA method.
(3) The department may reject any sample results if results are produced by a laboratory that is not in compliance with certification requirements under ch. NR 149.Wis. Admin. Code Department of Natural Resources NR 106.995
Adopted by, CR 21-083: cr. Register July 2022 No. 799, eff. 8/1/2022.