US lawIllinoisRegulationsTitle 35 — ENVIRONMENTAL PROTECTIONCHAPTER I: POLLUTION CONTROL BOARDSUBCHAPTER c: EMISSION STANDARDS AND LIMITATIONS FOR STATIONARY SOURCESPart 211 — DEFINITIONS AND GENERAL PROVISIONSSubpart B211.391035 Ill. Adm. Code 211.3910Mixing OperationLast amended: 1993Year: 2026Length: 25 wordsOfficial source Section 211 Section 211.3910 Mixing Operation "Mixing operation" means the operation of combining two or more ingredients, of which at least one is a grain.Previous35 Ill. Adm. Code 211.3890Next35 Ill. Adm. Code 211.3915