TITLE 35: ENVIRONMENTAL PROTECTION SUBTITLE C: WATER POLLUTION CHAPTER II: ENVIRONMENTAL PROTECTION AGENCY PART 373 THIRD STAGE TREATMENT LAGOON EXEMPTIONS The General Assembly's Illinois Administrative Code database includes only those rulemakings that have been permanently adopted. This menu will point out the Sections on which an emergency rule (valid for a maximum of 150 days, usually until replaced by a permanent rulemaking) exists. The emergency rulemaking is linked through the notation that follows the Section heading in the menu. View Entire Part SUBPART A: INTRODUCTION Section 373.101 Purpose Section 373.102 Definition of a Third Stage Treatment Lagoon Facility Section 373.103 Eligibility SUBPART B: FACILITY INFORMATION Section 373.201 Application Requirement Section 373.202 Facility Description Section 373.203 Population Equivalent Requirements Section 373.204 Sufficient Isolation Requirements Section 373.205 Useful Life SUBPART C: STREAM INFORMATION Section 373.301 Critical Length Section 373.302 Stream Description Section 373.303 Smaller Facilities Section 373.304 Stream Assimilative Capacity Section 373.305 Model Limitations Section 373.APPENDIX A Maximum Critical Length Section 373.APPENDIX B Modified Streeter-Phelps Equation Section 373.APPENDIX C Hydraulic Parameters Section 373.APPENDIX D Model Limitations

AUTHORITY: Implementing and authorized by Section 39(a) of the Environmental Protection Act (Ill. Rev. Stat. 1989, ch. 111½, par. 1039(a)).

SOURCE: Emergency rule adopted December 2, 1974, amended rule filed March 1, 1976, effective March 11, 1976; rules repealed, new rules adopted at 8 Ill. Reg. 3286, effective March 7, 1984; amended at 12 Ill. Reg. 3472, effective January 22, 1988; amended at 14 Ill. Reg. 18289, effective October 30, 1990.