1. Combined Sewer Overflow Program : City of Minneapolis Experience Combined Sewer Overflow Program : City of Minneapolis Experience By - Obafemi Obayemi ISE – 8105 Capstone Project

2. Outline  CSO Overview.  Cost to People and Environment.  Who Benefits?  What to Do.  Outcome

3. CSO Overview

4. CSO Overview (Cont.)

6. Costs to Environment and People  Untreated sewage and other pollutants flow into Mississippi River  Causes serious health and environmental problems to residents  Potential for sewage backups in basements  Exposure to lawsuits and monetary penalties  Problematic for the sewage treatment systems

7. Who Benefits?  Health benefits  Environment  Public  Endangered species.

8. What to Do  Infiltration/inflow (I/I) control  Sludge and solids residuals handling and disposal from wastewater treatment systems  Study storage or conveyance improvements  Pollution-problem assessment/solution methodology

9. Outcome  Elimination of CSO events for effective utilization of our systems and achieving a more clean environment.

10. Questions ?