Impaired Waters and
Total Maximum Daily Loads (TMDL)

Litigation Status

Lawsuits were filed against the Environmental Protection Agency (EPA) regarding Missouri's TMDL program in 1998. The basic premise of the litigation was to ensure Missouri developed scientifically based 303(d) lists and TMDL documents. If a state does not fulfill its obligation, EPA is required to develop the impaired waters list and to complete the associated TMDLs. In Missouri, all TMDLs and related products are developed by the department and approved by EPA.

The following documents were generated in response to lawsuit issues. The Memorandum of Understanding was agreed to by EPA and the department and this document also guides the overall TMDL process.

Memorandum of Understanding PDF 11 KB

(Exhibit A)   

Section 303(d), 1998 Missouri's impaired waters list PDF 34 KB

(Exhibit B)  

Missouri 2000 303(d) Strategy Document PDF 7 KB

I. 

Development of 2000 Section 303(d) list  PDF 23 KB

II. 

Strategies and Schedules for TMDL Development and Implementation PDF 34 KB

III. 

Implementation of Federal Permit Rules related to Section 303(d) waters  PDF 12 KB

Appendix A: 

Federal Clean Water Act, Section 303(d)  PDF 8 KB

Appendix B: 

Drinking Water Supply Reservoirs and Algae  PDF 8 KB

Appendix C: 

Drinking Water Supply Source Waters and Herbicides  PDF 10 KB

Appendix C-1: 

Methodology for Calculating Mean Herbicide Concentrations PDF 9 KB

Appendix D: 

Monitoring Plans PDF 18 KB

Appendix E: 

Nonpoint Sources, TMDLs and the 303(d) list PDF 34 KB

Appendix F: 

Waste Load Allocation and TMDL Studies in Missouri and Present Use Attainment Status of those waters PDF 8 KB

Appendix G: 

Water Quality Data Collection, Analysis and Management PDF 26 KB

(Exhibit C)  

Modified Schedule for TMDL Development PDF 10 KB   
This list assigns specific dates to some of the waters that appear on Missouri's impaired waters list, Exhibit A.

(Exhibit D)   

Interim Monitoring Plan for 26 Waters PDF 57 KB
This is a list of specific waters for which water quality concerns have been raised.

Settlement Agreement PDF 542 KB

Consent Decree (link to EPA Region 7 PDF )