74:29:11:37Excursion sampling frequency.
Section · Administrative Rules of South Dakota · View on sdlegislature.gov ↗
Throughout the time when any control parameter is present in a monitor well, a water sample shall be taken at least two times a week from the well. The samples must be analyzed for all control parameters within one week after the sample is taken.
Source: 33 SDR 160, effective April 17, 2007.