TITLE 35: ENVIRONMENTAL PROTECTION SUBTITLE C: WATER POLLUTION CHAPTER I: POLLUTION CONTROL BOARD PART 310 PRETREATMENT PROGRAMS 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: GENERAL PROVISIONS Section 310.101 Applicability Section 310.102 Objectives Section 310.103 Federal Law Section 310.104 State Law Section 310.105 Confidentiality Section 310.106 Electronic Reporting Section 310.107 Incorporations by Reference Section 310.110 Definitions Section 310.111 New Source Section 310.112 Significant Industrial User SUBPART B: PRETREATMENT STANDARDS Section 310.201 General Prohibitions Section 310.202 Specific Prohibitions Section 310.210 Local Limits Developed by POTW Section 310.211 Status of Local Limits Section 310.220 Categorical Standards Section 310.221 Source Category Determination Request Section 310.222 Deadline for Compliance with Categorical Standards Section 310.230 Concentration and Mass Limits Section 310.232 Dilution Prohibited as a Substitute for Treatment Section 310.233 Combined Waste Stream Formula SUBPART C: REMOVAL CREDITS Section 310.301 Special Definitions Section 310.302 Authority Section 310.303 Conditions for Authorization to Grant Removal Credits Section 310.310 Calculation of Revised Discharge Limits Section 310.311 Demonstration of Consistent Removal Section 310.312 Provisional Credits Section 310.320 Compensation for Overflow Section 310.330 Exception to POTW Pretreatment Requirement Section 310.340 Application for Removal Credits Authorization Section 310.341 Agency Review Section 310.343 Assistance of POTW Section 310.350 Continuation of Authorization Section 310.351 Modification or Withdrawal of Removal Credits SUBPART D: PRETREATMENT PERMITS Section 310.400 Preamble Section 310.401 Pretreatment Permits Section 310.402 Time to Apply Section 310.403 Imminent Endangerment Section 310.410 Application Section 310.411 Certification of Capacity Section 310.412 Signatures Section 310.413 Site Visit Section 310.414 Completeness Section 310.415 Time Limits Section 310.420 Standard for Issuance Section 310.421 Final Action Section 310.430 Conditions Section 310.431 Duration of Permits Section 310.432 Schedules of Compliance Section 310.441 Effect of a Permit Section 310.442 Modification Section 310.443 Revocation Section 310.444 Appeal SUBPART E: POTW PRETREATMENT PROGRAMS Section 310.501 Pretreatment Programs Required Section 310.502 Deadline for Program Approval Section 310.503 Incorporation of Approved Programs in Permits Section 310.504 Incorporation of Compliance Schedules in Permits Section 310.505 Reissuance or Modification of Permits Section 310.510 Pretreatment Program Requirements Section 310.511 Receiving Electronic Documents Section 310.521 Program Approval Section 310.522 Contents of Program Submission Section 310.524 Content of Removal Allowance Submission Section 310.531 Agency Action Section 310.532 Defective Submission Section 310.533 Water Quality Management Section 310.541 Deadline for Review Section 310.542 Public Notice and Hearing Section 310.543 Agency Decision Section 310.544 USEPA Objection Section 310.545 Notice of Decision Section 310.546 Public Access to Submission Section 310.547 Appeal SUBPART F: REPORTING REQUIREMENTS Section 310.601 Definition of Control Authority (Repealed) Section 310.602 Baseline Report Section 310.603 Compliance Schedule Section 310.604 Report on Compliance with Deadline Section 310.605 Periodic Reports on Compliance Section 310.606 Notice of Potential Problems Section 310.610 Monitoring and Analysis Section 310.611 Requirements for Non-Categorical Users Section 310.612 Annual POTW Reports Section 310.613 Notification of Changed Discharge Section 310.621 Compliance Schedule for POTWs Section 310.631 Signatory Requirements for Industrial User Reports Section 310.632 Signatory Requirements for POTW Reports Section 310.633 Fraud and False Statements Section 310.634 Recordkeeping Requirements Section 310.635 Notification of Discharge of Hazardous Waste Section 310.636 Annual Certification by Non-Significant Categorical Users Section 310.637 Receiving Electronic Documents SUBPART G: FUNDAMENTALLY DIFFERENT FACTORS Section 310.701 Definition of Requester Section 310.702 Purpose and Scope Section 310.703 Criteria Section 310.704 Fundamentally Different Factors Section 310.705 Factors that are Not Fundamentally Different Section 310.706 More Stringent State Law Section 310.711 Application Deadline Section 310.712 Contents of FDF Request Section 310.713 Deficient Requests Section 310.714 Public Notice Section 310.721 Agency Review of FDF Requests Section 310.722 USEPA Review of FDF Requests SUBPART H: ADJUSTMENTS FOR POLLUTANTS IN INTAKE Section 310.801 Net/Gross Calculation SUBPART I: UPSETS Section 310.901 Definition Section 310.902 Effect of an Upset Section 310.903 Conditions Necessary for an Upset Section 310.904 Burden of Proof Section 310.905 Reviewability of Claims of Upset Section 310.906 User Responsibility in Case of Upset SUBPART J: BYPASS Section 310.910 Definitions Section 310.911 Bypass Not Violating Applicable Pretreatment Standards or Requirements Section 310.912 Notice Section 310.913 Prohibition of Bypass SUBPART K: MODIFICATION OF POTW PRETREATMENT PROGRAMS Section 310.920 General Section 310.921 Substantial Modifications Defined Section 310.922 Approval Procedures for Substantial Modifications Section 310.923 Approval Procedures for Non-Substantial Modifications Section 310.924 Incorporation of Modifications into the Permit SUBPART L: FEDERAL PROJECT XL AGREEMENTS Section 310.930 Federally Approved Pretreatment Program Reinvention Pilot Projects Under Project XL (Repealed)

AUTHORITY: Implementing and authorized by Sections 7.2, 13, 13.3, and 27 of the Environmental Protection Act [415 ILCS 5/7.2, 13, 13.3, and 27].

SOURCE: Adopted in R86-44 at 12 Ill. Reg. 2502, effective January 13, 1988; amended in R88-18 at 13 Ill. Reg. 2463, effective January 31, 1989; amended in R89-3 at 13 Ill. Reg. 19243, effective November 27, 1989; amended in R89-12 at 14 Ill. Reg. 7608, effective May 8, 1990; amended in R91-5 at 16 Ill. Reg. 7346, effective April 27, 1992; amended in R95-22 at 20 Ill. Reg. 5533, effective April 1, 1996; amended in R96-12 at 20 Ill. Reg. 10671, effective July 24, 1996; amended in R97-7 at 21 Ill. Reg. 5163, effective April 10, 1997; amended in R98-23 at 22 Ill. Reg. 11465, effective June 22, 1998; amended in R99-17 at 23 Ill. Reg. 8412, effective July 12, 1999; amended in R00-7 at 24 Ill. Reg. 2372, effective January 26, 2000; amended in R00-15 at 24 Ill. Reg. 11633, effective July 24, 2000; amended in R01-5 at 25 Ill. Reg. 1322, effective January 11, 2001; amended in R01-25 at 25 Ill. Reg. 10860, effective August 14, 2001; amended in R02-3 at 26 Ill. Reg. 4008, effective February 28, 2002; amended in R02-9 at 26 Ill. Reg. 4653, effective March 18, 2002; amended in R03-13 at 27 Ill. Reg. 15137, effective September 10, 2003; amended in R04-1 at 28 Ill. Reg. 3390, effective February 6, 2004; amended in R04-18 at 28 Ill. Reg. 10684, effective July 13, 2004; amended in R06-13 at 30 Ill. Reg. 17847, effective October 26, 2006; amended in R08-5/R08-7/R08-13 at 32 Ill. Reg. 19008, effective November 26, 2008; amended in R13-7 at 37 Ill. Reg. 1962, effective February 4, 2013; amended in R15-13 at 39 Ill. Reg. 12357, effective August 24, 2015; amended in R16-9 at 41 Ill. Reg. 1155, effective January 23, 2017; amended in R21-8 at 44 Ill. Reg. 19486, effective December 3, 2020; amended in R21-15 at 45 Ill. Reg. 8061, effective June 21, 2021; amended in R18-23 at 47 Ill. Reg. 5083, effective March 23, 2023.