Wash. Rev. Code § 78.56.110
(1) The department of ecology shall not issue necessary permits to an applicant for a metals mining and milling operation until the applicant has deposited with the department of ecology a performance security which is acceptable to the department of ecology based on the requirements of subsection (2) of this section. This performance security may be:
(2) The performance security shall be conditioned on the faithful performance of the applicant or operator in meeting the following obligations:
[ 1995 c 223 s 1; 1994 c 232 s 11.]