Test holes that encounter no water or only low-permeability formations such as clays, shales, and till must be backfilled to restore natural conditions as nearly as possible. Backfill material must be free of contamination and have a permeability equal to or less than the permeability of the formations encountered in the borehole.

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.

General Authority: SDCL 46-2-5 , 46-6-6.1 , 46-6-9 , 46-6-20 , 46-6-27.

Law Implemented: SDCL 46-2-9 , 46-6-6.1 , 46-6-10 , 46-6-14 , 46-6-18 , 46-6-20 , 46-6-27 , 46-6-28.