1. Preventing Combined Sewer Overflow from Entering the Merrimack River Lauren Thistle & Bridget Burgermeister

2. CSO

3. What is a CSO?

4. How Do CSOs Impact Humans?

5. Wastewater Treatment Plant

6. Bar Screens

7. Sludge Removal

8. Sludge – Gravity Thickening

9. Primary Clarifiers

10. Aeration Tanks

11. Secondary Clarifiers

12. Chlorination

13. Developments to Eliminate CSOs Why… Clean Air Act Administrative Order

14. Mini Treatment Plants

15. Lowell Riverwalk

16. Green Stormwater Infrastructure (GSI)

17. Septic System

18. SCADA