Method of plugging

1. Before any testhole is abandoned, all of the cuttings possible must be returned to the testhole, and it must be plugged in a manner to prevent the intrusion of any foreign material. Cuttings not returned to the hole must be spread at the surface, if approved by the landowner, or properly disposed of off the testhole site, if approved by the owner of the disposal site. The plugging must be accomplished immediately when all desired information has been obtained. 2. If a testhole penetrates water-bearing sands, it must be plugged with cement or some other method approved by the state geologist, in a manner to permanently confine the water to its original stratum.