US lawIllinoisRegulationsTitle 35 — ENVIRONMENTAL PROTECTIONCHAPTER I: POLLUTION CONTROL BOARDPart 501 — GENERAL PROVISIONSSubpart B501.26535 Ill. Adm. Code 501.265LagoonYear: 2026Length: 24 wordsOfficial source Section 501 Section 501.265 Lagoon Any excavated, diked or walled structure or combination of structures designed for biological stabilization and storage of livestock wastes.Previous35 Ill. Adm. Code 501.263Next35 Ill. Adm. Code 501.267