US lawIllinoisRegulationsTitle 35 — ENVIRONMENTAL PROTECTIONCHAPTER I: POLLUTION CONTROL BOARDSUBCHAPTER c: EMISSION STANDARDS AND LIMITATIONS FOR STATIONARY SOURCESPart 225 — CONTROL OF EMISSIONS FROM LARGE COMBUSTION SOURCESSubpart F225.63535 Ill. Adm. Code 225.635Requirements for CAIR SO2, CAIR NOx, and CAIR NOx Ozone Season Allowances (Repealed)Last amended: 2009Year: 2026Length: 20 wordsOfficial source Section 225.635 Requirements for CAIR SO 2 , CAIR NO x , and CAIR NO x Ozone Season Allowances (Repealed)Previous35 Ill. Adm. Code 225.630Next35 Ill. Adm. Code 225.640