US lawWashingtonRegulationsTitle 173 — ECOLOGY, DEPARTMENT OFChapter 173-95A — USES AND LIMITATIONS OF THE CENTENNIAL CLEAN WATER PROGRAM173-95A-540WAC 173-95A-540WAC 173-95A-540. Step process for facilitiesLast amended: 2017Year: 2026Length: 13 wordsOfficial source Wastewater facility projects must follow the step process provisions in WAC 173-98-530 .PreviousWAC 173-95A-530NextWAC 173-95A-550