US lawWashingtonRegulationsTitle 16 — AGRICULTURE, DEPARTMENT OFChapter 16-470 — QUARANTINE—AGRICULTURAL PESTS16-470-410WAC 16-470-410WAC 16-470-410. Chestnut—Area under quarantineLast amended: 1985Year: 2026Length: 17 wordsOfficial source The area under quarantine for designated chestnut pests includes all states and districts of the United States.PreviousWAC 16-470-400NextWAC 16-470-420