Wash. Rev. Code § 82.34.100
(1) The department of ecology, after notice to the department and the applicant and after affording the applicant an opportunity for a hearing, shall, on its own initiative or on complaint of the local or regional air pollution control agency in which an air pollution control facility is located, or is expected to be located, revise the prior findings of the appropriate control agency whenever any of the following appears:
(2) A certificate, or supplement thereto, issued pursuant to RCW 82.34.030 may not be revoked if:
[ 2020 c 20 s 1487; 1998 c 9 s 1; 1988 c 127 s 37; 1967 ex.s. c 139 s 10.]