Washington Revised Code Title 78. Mines, Minerals, and Petroleum § 78.60.140. Termination or cancellation of bond or change in other security, when

The department shall not consent to the termination and cancellation of any bond by the operator, or change as to other security given, until the well or wells for which it has been issued have been properly abandoned or another valid bond for such well has been submitted and approved by the department. A well is properly abandoned when abandonment has been approved by the department.