WAC 173-154-080   Deepening of withdrawal facilities.  At any time that the holder of a valid groundwater right proposes to deepen a withdrawal facility, the modification of the facility shall be made in such a manner as to preclude the occurrence of cascading waters. Such a facility shall not be deepened to tap a different body of public groundwater, or a different aquifer zone where such zones have been determined by the department, without further appropriate authorization from the department.



[Statutory Authority: Chapters 90.44 and 90.54 RCW. 85-12-018 (Order 84-45), § 173-154-080, filed 5/29/85.]