US lawIllinoisRegulationsTitle 35 — ENVIRONMENTAL PROTECTIONCHAPTER II: ENVIRONMENTAL PROTECTION AGENCYPart 370 — ILLINOIS RECOMMENDED STANDARDS FOR SEWAGE WORKS370.APPENDIX E35 Ill. Adm. Code 370.APPENDIX EE Figure No. 2 – Primary SettlingYear: 2026Length: 16 wordsOfficial source Section 370.APPENDIX E Figure No. 2 – Primary Settling (REFER TO 35 ILL. ADM. CODE 70.710(b)(1)(A))Previous35 Ill. Adm. Code 370.APPENDIX DNext35 Ill. Adm. Code 370.APPENDIX F