US lawWashingtonRegulationsTitle 173 — ECOLOGY, DEPARTMENT OFChapter 173-802 — SEPA PROCEDURES173-802-010WAC 173-802-010WAC 173-802-010. AuthorityLast amended: 1984Year: 2026Length: 18 wordsOfficial source These rules are promulgated under RCW 43.21C.120 (the State Environmental Policy Act) and chapter 197-11 WAC (SEPA rules).NextWAC 173-802-020