1. Presented by Tom Heinemann, CH2MHILL October 2, 2013
Omaha’s $1.7 Billion Combined Sewer Overflow Program CH2M HILL 2013 Alumni Retreat
Presented by
Tom Heinemann, CH2MHILL
October 2, 2013
G\DP\Water\Omaha_MRWWTP_WBG DEN

2. Presentation Topics Planning Phase Implementation Phase
Adaptive Management
Q&A

3. Aspects of Omaha A very mid-western city: An attractive city:
People are nice, polite, hard-working, not flashy who value trusting relationships with their consultants (think Warren Buffet)
An attractive city:
Convention Center, new baseball stadium for College World Series, Old Market, Missouri River, pedestrian bridge, easy airport, Midtown re-development
Key Industries and Agencies:
USACE Omaha District; Offut AFB; ConAgra HQ; Mutual of Omaha; Woodmen of the World; Union Pacific; Berkshire Hathaway

4. Omaha Sewer System & CSOs
1,950 miles of sewers
Eastern half combined
Western half separate
43 sq mi combined sewer area (out of 275)
29 CSO outfalls
10 to Papillion Creek
19 to Missouri River
2 Treatment Plants
600,000 service population 4 4

5. Current Annual Overflow Statistics
No. of Overflows
CSO Volume (MG/yr)
Missouri River Watershed 78
2,788
Papillion Creek Watershed 67
710
Total System
3,498
Total Wet Weather Volume NA
8,181

6. Five Major Elements of Final Long Term Control Plan
Targeted Sewer Separation Projects
Two High-Rate
Treatment Facilities
One Deep
Conveyance Tunnel

7. Five Major Elements of Final Long Term Control Plan
Two Underground
Storage Tanks
One Deep
Conveyance Sewer

8. Typical Combined Sewer
Combined Service Lateral
Combined
Sewer Line
Stormwater Lateral
Omaha residential street

9. House Sanitary Lateral
Typical Sewer Separation
Omaha residential street
Sanitary
Sewer Line
House Sanitary Lateral
Stormwater Lateral
Stormwater
Pipeline

10. Deep Tunnel Schematic

11. Tunnel Boring Machine

12. Drop Shaft Surface Appearance (Milwaukee)

13. Storage: Below-Ground Tanks
Vent Shaft
To Interceptor
Inflow Pipe
Pumps
Baffle Wall
Vent
Shaft
To Overflow
“Tipping Bucket”
Flushing System
Access
Access Manhole
For Cleaning, etc.

14. Green Solutions Rainwater Capture Landscaping – Bioretention Basin
Conveyance (Swales)

15. After LTCP Annual Overflow Statistics
Number of Overflows (2024)
Percent of overflow volume controlled (2024)
Missouri River Watershed 4
92%
Papillion Creek Watershed
96%
Total System
94%

16. Missouri River Below Papillion Creek Annual E. coli Loading

17. Integrated Program Management Team: Makeup
Identified City staff
CH2M HILL
HDR Engineering (Omaha is their HQ)
Lamp, Rynearson & Associates
Lovgren Marketing
Consulting staff approximately 20 FTEs

18. Key Areas of Interaction and Responsibility

19. Numerous Design and Construction Projects Are Ongoing

20. Average Residential Sewer Bills
$40.00
$37.23
$35.00
$30.00
$25.00
$20.00
$15.00
$10.00
$5.00
$0.00
2006
2007
2008
2009
2010
2011
2012
2013
2014
Monthly Household Bill

21. Adaptive Management Approach

22. Adaptive Management LTCP Update due in 2014
Optimize the plan and reduce costs
Update project schedule based on change in compliance date from 2024 to 2027
Flexible Administrative Consent Order allows City to make changes without involvement by courts
City must continue to adapt as the Plan is implemented

25. CSO Planning and Implementation Timeline
Preliminary Combined Sewer Overflow (CSO) Long-Term Control Plan (LTCP)
Final CSO LTCP
Implementation of CSO Controls
2007
2008
2009
2010
2023
2027
Negotiate Final Water Quality Goal 2008
Design of CSO Controls

26. For More Information…

27. Comments & Questions