The owner or operator shall initially sample all designated downgradient wells within 90 days after determination that an assessment monitoring program is required by § 74:27:20:01. At a minimum, the initial sampling must include all parameters specified in 40 C.F.R. Part 258, Appendix II, as published on 56 Fed. Reg. 51,033 to 51,039, inclusive (October 9, 1991). Sampling frequency must be at least semiannually for all Appendix I parameters and those Appendix II parameters detected as a result of the assessment monitoring. In addition, the owner or operator shall sample all Appendix II parameters annually.
S.D. Admin. R. 74:27:20:02
General Authority: SDCL 34A-6-1.6.
Law Implemented: SDCL 34A-6-1.6, 34A-6-1.7.