74:02:04:31Driven well casing to
Section · Administrative Rules of South Dakota · View on sdlegislature.gov ↗
be sealed with bentonite. The casing for a driven well shall be sealed with bentonite as the casing is driven by pouring dry granular bentonite around the casing at the ground surface. The granular bentonite must be an 8 x 20 mesh or 16 x 60 mesh material. A driven well may not be used as a public water supply well.
Source: 12 SDR 50, effective September 29, 1985; 13 SDR 129, 13 SDR 141, effective July 1, 1987; 18 SDR 224, effective July 16, 1992.