Wash. Rev. Code § 79A.05.155
If the commission determines it necessary, the applicant shall execute and file with the secretary of state a bond payable to the state, in such penal sum as the commission shall require, with good and sufficient sureties to be approved by the commission, conditioned that the grantee of the permit will make the improvement in accordance with the plans and specifications contained in the permit, and, in case the improvement is made upon lands withdrawn from sale under the provisions of RCW 79A.05.105, will pay into the state treasury to the credit of the fund to which the proceeds of the sale of such lands would belong, the appraised value of all merchantable timber and material on the land, destroyed, or used in making such improvement.
RCW 79A.05.155