Ill. Admin. Code tit. 35, pt. 352

Procedures for Determining Water Quality Based Permit Limitations for National Pollutant Discharge Elimination System Dischargers to the Lake Michigan Basin

AUTHORITY: Implementing Section 13 and authorized by Sections 11(b) and 39(b) of the Environmental Protection Act [415 ILCS 5/11(b), 13 and 39(b)] SOURCE: Adopted at 22 Ill. Reg. 4356, effective February 20, 1998. NOTE: In this Part, superscript number or letters are denoted by parentheses; subscript are denoted by brackets; and SUM means the summation series or sigma function as used in mathematics.ENVIRONMENTAL PROTECTION AGENCY

352.100Introduction 352.101Scope 352.102Applicability 352.103Purpose 352.104Definitions 352.105Incorporations by Reference 352.106Relationship to Other Regulations 352.200Procedures for Establishing Permit Limitations for Discharges to Waters Not Currently Meeting Water Quality Standards, Criteria, or Values 352.300Additivity for Combinations of Substances 352.302Values for 2,3,7,8-TCDD Toxicity Equivalence Concentrations 352.303Criteria for Consideration of Additivity for Nonthreshold Toxic Substances 352.401Applicability and Exclusions 352.410Data Requirements 352.412Conversion Factors for Dissolved and Total Metals 352.421Estimation of Projected Effluent Quality 352.422Dilution Allowance 352.423Calculation of Preliminary Effluent Limitation 352.424Determination of Reasonable Potential 352.425Intake Credits 352.430Instances Requiring Effluent Limits, Other Conditions, or Additional Data 352.440Special Provisions for Noncontact Cooling Water 352.500Procedures for Establishing Permit Limits and Special Provisions for the Potential to Exceed Determination 352.520Whole Effluent Toxicity Data 352.530Estimation of Projected Effluent Quality (PEQ)352.540Calculation of Preliminary Effluent Limitation (PEL)352.550Establishing Whole Effluent Toxicity Conditions 352.600Mass Loading Limits 352.700Water Quality Based Effluent Limits Below Detection or Quantification 352.800Compliance Schedules 352.900Antidegradation Provisions for Bioaccumulative Chemicals of Concern (BCCs)