NAC534A.150. Sealing of holes.  


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  •      1. All holes must be sealed at the surface with natural soil or concrete regardless of the diameter or depth of the hole.

         2. Holes drilled into or through artesian aquifers must be sealed to prevent upward leakage after the drilling pipe is withdrawn at the conclusion of drilling operations. Failure to so seal a hole constitutes waste.

     [St. Engineer, Exploration Drilling Reg. Art. IV + part Art. VII, eff. 12-13-77]