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The Agency has prepared a list of impaired waters to fulfill the requirements
set forth in Section 303(d) of the federal Clean Water Act and the Water
Quality Planning and Management regulation at 40 CFR Part 130. The report
also provides information about the Total Maximum Daily Load program/process
in Illinois.
2012
2010
2008
- Illinois EPA Response to December 29, 2008, Federal Register Notice
- February
11, 2009, Cover Letter from Marcia Willhite, Illinois EPA, to Timothy
Henry, USEPA Region 5
(PDF, 211KB)
- February
11, 2009, Illinois EPA Comments on USEPA’s Partial Disapproval
of Illinois’ 2008 303(d) List and USPEA’s Proposed 303(d)
List for Illinois
(PDF, 256KB)
- Attachment
A – USEPA October 22, 2008, Decision Document Cover
Letter
(PDF, 207KB)
- Attachment
B – USEPA October 22, 2008, Decision
Document
(PDF, 6.12MB)
- Attachment
C – USEPA December 12, 2008, Approval of Illinois
EPA Revised Dissolved Oxygen Standard
(PDF, 174KB)
- Attachment
D – Illinois Attorney General’s Office Letter
to USEPA Certifying Illinois EPA’s Revised Water Quality Standards
for Sulfates and Total Dissolved Solids
(PDF, 167KB)
- Attachment
E – Illinois EPA Response to USEPA Decision Document
Tables 1-5
(PDF, 524KB)
- Attachment
F – USEPA Evaluation of Illinois EPA
75% - Silt/Mud Guideline to Identify Sedimentation/Siltation as a Cause
of Impairment
(PDF, 1.67MB)
- Attachment
G – Illinois EPA Technical Review of
USEPA Evaluation of the 75% - Silt/Mud Guideline Used by Illinois EPA
(PDF,
551KB)
- USEPA, Region 5, is seeking comments on proposed additions (and on
one deletion) to the Illinois 2008 303(d) List through February 12,
2009.
- View Federal Register Notice
(December 29, 2008 - PDF, 66KB)
- USEPA Partial Approval Partial Disapproval Illinois 2008 303d List
(October 22, 2008 - PDF, 302KB)
- USEPA Decision Document
(PDF, 134KB)
- Waters delisted based on New Dissolved Oxygen Standard
(Note that USEPA, Region 5, approved this standard on December 18, 2008
- PDF, 14KB)
- Waters delisted based on Deletion of General Use TDS Standard
(Note that USEPA, Region 5, approved this standard on March 19, 2009
- PDF, 58KB)
- Waters delisted based on New Sulfate General Use Water Quality Standard
(Note that USEPA, Region 5, approved this standard on March 19, 2009
- PDF, 13KB)
- Waters delisted for Total Nitrogen Impairment due to methodology change
(PDF, 70KB)
- Waters delisted for Sedimentation Impairment due to methodology change
(PDF, 24KB)
- Waters listed as DO Impaired (with DO as a non-pollutant)
(PDF, 95KB)
- Partially Approved 2008 Illinois 303(d) List
(PDF, 4.2MB)
- Illinois
Integrated Water Quality Report and Section 303(d) List - 2008
(6-30-08 Final Draft to USEPA - PDF, 4.3MB)
- Appendix
B-1. Illinois' EPA Basins
(PDF, 432KB)
- Appendix
B-2. Specific Assessment Information for Streams
(PDF, 610KB)
- Appendix
B-3. Specific Assessment Information for Inland Lakes
(PDF, 184KB)
- Appendix
B-4. Specific Assessment Information for Lake Michigan Open Waters
(PDF, 34KB)
- Appendix
B-5. Specific Assessment Information for Lake Michigan Beaches
(PDF, 107KB)
- Appendix
B-6. Specific Assessment Information for Lake Michigan Bays and Harbors
(PDF, 37KB)
- Appendix
C. Statewide Resource Quailty Summary For Significant Publicly Owned Lakes
(PDF, 61KB)
- Appendix
D. Changes in Assessment Uint IDs between 2006 and 2008
(PDF, 67KB)
- Appendix
E. Groundwater Use Assessments
(PDF, 48KB)
- Appendix
F. Responsiveness Summary
(PDF, 52KB)
2006
2004
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