US lawWashingtonRegulationsTitle 173 — ECOLOGY, DEPARTMENT OFChapter 173-40 — POLLUTION DISCLOSURE173-40-010WAC 173-40-010WAC 173-40-010. AuthorityLast amended: 1972Year: 2026Length: 19 wordsOfficial source This regulation is adopted pursuant to chapter 90.52 RCW, the Pollution Disclosure Act of 1971, and chapter 43.21A RCW.NextWAC 173-40-020