ARSD 74:11:08:08. Temporary plugging and capping

If a delay in plugging and capping is approved by the department, the hole shall be securely capped with a tapered concrete plug or suitable equivalent that is of sufficient diameter to prevent it from slipping below the surface. The temporarily plugged and capped hole shall be marked with a sturdy steel fence post with a minimum height of 42 inches above the ground surface. All test holes shall be capped and permanently plugged as soon as practical and may not be left unplugged for more than 30 days without approval of the department.