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Illinois Administrative Code (Last Updated: March 27, 2024) |
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TITLE35. ENVIRONMENTAL PROTECTION |
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PART620. GROUNDWATER QUALITY |
| SUBPART A. GENERAL |
| § 620.105. Purpose |
| § 620.110. Definitions |
| § 620.115. Prohibition |
| § 620.125. Incorporations by Reference |
| § 620.130. Exemption from General Use Standards and Public and Food Processing Water Supply Standards |
| § 620.135. Exclusion for Underground Water in Certain Man-Made Conduits |
| SUBPART B. GROUNDWATER CLASSIFICATION |
| § 620.201. Groundwater Designations |
| § 620.210. Class I: Potable Resource Groundwater |
| § 620.220. Class II: General Resource Groundwater |
| § 620.230. Class III: Special Resource Groundwater |
| § 620.240. Class IV: Other Groundwater |
| § 620.250. Groundwater Management Zone |
| § 620.260. Reclassification of Groundwater by Adjusted Standard |
| SUBPART C. NONDEGRADATION PROVISIONS FOR APPROPRIATE GROUNDWATERS |
| § 620.301. General Prohibition Against Use Impairment of Resource Groundwater |
| § 620.302. Applicability of Preventive Notification and Preventive Response Activities |
| § 620.305. Preventive Notification Procedures |
| § 620.310. Preventive Response Activities |
| SUBPART D. GROUNDWATER QUALITY STANDARDS |
| § 620.401. Applicability |
| § 620.405. General Prohibitions Against Violations of Groundwater Quality Standards |
| § 620.410. Groundwater Quality Standards for Class I: Potable Resource Groundwater |
| § 620.420. Groundwater Quality Standards for Class II: General Resource Groundwater |
| § 620.430. Groundwater Quality Standards for Class III: Special Resource Groundwater |
| § 620.440. Groundwater Quality Standards for Class IV: Other Groundwater |
| § 620.450. Alternative Groundwater Quality Standards |
| SUBPART E. GROUNDWATER MONITORING AND ANALYTICAL PROCEDURES |
| § 620.505. Compliance Determination |
| § 620.510. Monitoring and Analytical Requirements |
| SUBPART F. HEALTH ADVISORIES |
| § 620.601. Purpose of a Health Advisory |
| § 620.605. Issuance of a Health Advisory |
| § 620.610. Publishing Health Advisories |
| § 620.615. Additional Health Advice for Mixtures of Similar-Acting Substances |
| § 620.APPENDIX A. Procedures for Determining Human Threshold Toxicant Advisory Concentration for Class I: Potable Resource Groundwater |
| § 620.APPENDIX B. Procedures for Determining Hazard Indices for Class I: Potable Resource Groundwater for Mixtures of Similar-Acting Substances |
| § 620.APPENDIX C. Guidelines for Determining When Dose Addition of Similar-Acting Substances in Class I: Potable Resource Groundwaters is Appropriate |
| § 620.APPENDIX D. Confirmation of an Adequate Corrective Action Pursuant to 35 Ill. Adm. Code 620.250(a)(2) |
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SOURCE: Adopted in R89-14(B) at 15 Ill. Reg. 17614, effective November 25, 1991; amended in R89-14(C) at 16 Ill. Reg. 14667, effective September 11, 1992; amended in R93-27 at 18 Ill. Reg. 14084, effective August 24, 1994; amended in R96-18 at 21 Ill. Reg. 6518, effective May 8, 1997; amended in R97-11 at 21 Ill. Reg. 7869, effective July 1, 1997; amended in R01-14 at 26 Ill. Reg. 2662, effective February 5, 2002; amended in R08-18 at 36 Ill. Reg. 15206, effective October 5, 2012; amended in R08-18(B) at 37 Ill. Reg. 16529, effective October 7, 2013.
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Notation
AUTHORITY: Implementing and authorized by Section 8 of the Illinois Groundwater Protection Act [415 ILCS 55/8] and authorized by Section 27 of the Illinois Environmental Protection Act [415 ILCS 5/27].