The Mill Creek (Scioto) Watershed TMDL
Background
The Mill Creek Total Maximum Daily Load (TMDL) report was approved by U.S. EPA on September 2, 2003. It is the seventh Ohio TMDL project approved by U.S. EPA under Section 303(d) of the Clean Water Act. TMDLs identify and evaluate water quality problems in impaired water bodies and propose solutions to bring those waters into attainment.
Mill Creek is in the Scioto River basin, and flows through Logan, Union, and Delaware Counties before its confluence with the Scioto River. The impairment issues addressed by this TMDL are all in Union County; the portions of the stream in Logan and Delaware counties are in attainment.
The Mill Creek (Scioto) TMDL is primarily a point-source-oriented TMDL. The TMDL addresses an instream dissolved oxygen problem attributed to the Marysville WWTP, and ammonia and nutrient loading to Crosses Run, attributed to the Scotts Company.
The TMDL in Brief
The TMDL Report
- Final Report with Appendices A and B (July 2003, PDF 2,084K]
- Appendix C – Model Development for the Mill Creek TMDL Project [PDF 381K]
- Appendix D – Qualitative Habitat Evaluation Index Scores for the Mill Creek Basin [PDF 477K]
- Appendix E – Responsiveness Summary to Public Comments [PDF 46K]
- Appendix F – Scotts Consent Order [PDF 85K]
- Consent Order Appendix A: Map of the Facility and the Site (not available electronically)
- Consent Order Appendix B: Index of RCRA Corrective Action Guidance Documents [PDF 22K]
- Consent Order Appendix C: Approved RFI Workplan (not available electronically)
- Consent Order Appendix D: Site-Specific Corrective Measures Implementation Scope of Work [PDF 43K]
- Consent Order Appendix E: Pond 3 Closure [PDF 15K]
- Appendix G – Phosphorus Target Development for the Mill Creek Basin [PDF 134K]
Many of the documents referenced in the TMDL report can be found under Forms and Publications on the Ohio EPA Division of Surface Water Web page.
For more information contact:
Mike Gallaway
Ohio EPA
Central District Office
50 West Town Street, Suite 700
P.O. Box 1049
Columbus, Ohio 43216-1049
e-mail: mike.gallaway@epa.state.oh.us
telephone: (614) 728-3843
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