1. Dugway West Interceptor
Relief Sewer (DWIRS)
April 4, 2013

2. Agenda
• Project Location and Alignment
• Easements, Constraints, and
Construction Sequencing
• Community Benefits and Restoration
• Project Clean Lake and CSO Benefits
once completed
2

3. About us
• Created by Court Order in 1972
• Servicing all or part of 62
member communities
• 1 million customers
• 90+ billion gallons wastewater
treated each year
3

4. What We Do
• Three wastewater treatment plants
• Interceptor sewer operation,
maintenance
• Combined Sewer Overflow control
• Regional Stormwater Management
4

5. Street Catch WWTP
Basins
Domestic Industrial
Wastewater Wastewater Storm Water
Outlet (SWO)
Regulator
Lake Erie
Combined
Sewer
Combined
Dry weather
Sewer Overflow
outlet (DWO)
Flow to WWTP
Combined Sewer System

6. How they work:
Regulating structures
allow excess stormwater
to overflow
Overflow pipe
Side-spill weir
6

7. Combined Sewer Overflow (CSO)

8. Netting facility, floatable debris from
combined sewer overflow
2010
8

9. 9

10. 10

11. Project background
• Control CSO overflows
• Consolidate existing regulators
• Provide relief for up to a 5-year, 6-hour
storm event
• Convey flow to current interceptor, future
tunnel
• Prepare for future 17’ Doan Valley Tunnel
11

12. By the numbers
• 11,000 feet
3’ to 6’ sewers in tunnel
• 2,700 feet
15” to 7’ sewers in open-cut
• Plus structures, regulators, and
modifications

13. DWIRS Location
 DWIRS location related to
Dugway West Brook and Dugway
West Culvert
 Existing local sewer system
 Existing CSO Regulators
 Proximity to Dugway East Brook
and Dugway Storage Tunnel
 Proximity to Easterly Interceptor
on the North End
 Proximity to Doan Valley Tunnel
on the South End
13

14. Open Streams, Brooks ORIGINAL
Nine Mile
Nine Mile
Creek/Culvert
Creek/Culvert
Dugway West
Dugway West
Brook /Culvert
Brook /Culvert
Dugway East
Dugway East
Brook/Culvert
Brook/Culvert
Doan Brook/
Doan Brook/
Culvert
Culvert

15. Open Streams, Buried Culverts CURRENT
Nine Mile
Nine Mile
Creek/Culvert
Creek/Culvert
Dugway West
Dugway West
Brook /Culvert
Brook /Culvert
Dugway East
Dugway East
Brook/Culvert
Brook/Culvert
Doan Brook/
Doan Brook/
Culvert
Culvert

16. Bidding, Construction Schedule
1. DWIRS Project Bidding May 2013
2. Construction Start Sept. 2013
3. Substantial Completion May 2016
(32 months)
4. Final Completion Sept. 2016
(36 Months)
16

17. Easements, property
acquisition
• Ongoing discussions
• Negotiations: TranSystems
• Land Bank acquisitions, demolition:
NEORSD
• 8 properties to be demolished
• Demolition work will occur in the first 5
months
17

18. Project Constraints
• Focus: Northern half, then southern
– Utility relocation by other agencies may
occur anywhere along alignment
• Limit active shafts, work sites
• Restore work zones shortly after
completion
18

19. Project Constraints
• Coordinate with schools to maintain
access to all driveways
• Limit haul routes
• Complete work within St. Clair within
12 months
19

20. Project Constraints
• Complete Durant sewer in final 12
months
• Demolish eight structures within first
five months
• Work hours: 7 a.m. – 7 p.m.
Monday – Saturday per the City
20

21. Estimated Work Durations
Mainline A-Open Cut Mainline B-Tunnel St. Clair Ave East
Mainline C-Tunnel
21

22. 22

23. 23

24. 24

25. 25

26. 26

27. 27

28. 28

29. 29

30. 30

31. 31

32. 32

33. 33

34. 34

35. 35

36. 36

37. Provisions and
monitoring
• Inspections: Contractors will video
and photograph structures’ exterior
• Markers: Contractor will install
Geotechnical instrumentation and
survey markers on structures
• Vibration monitoring
37

38. Provisions and
monitoring
• Surface settlement monitoring
over tunnel
• Post-construction inspection
• Restoration as needed
38

39. Community benefits,
restoration
• Aspects of restoration are open to
community input
• Final Roadway restoration will
include new pavement
39

40. Community benefits,
restoration
• Additional demolition will be
considered
• Additional community benefits will
be considered as opportunities are
presented
40

41. What is Project Clean Lake?
• Consent decree with EPA
• $3 billion 25-year program to address
water quality issues caused by sewage
overflows (CSOs)
41

42. What is Project Clean Lake?
• 772 communities have similar
mandates

43. What is Project Clean Lake?
• Reduce combined sewer overflow volume
10
9
8
7
Billions of gallons
6
5
4
3
2
1
0
1972 TODAY 2035
43

44. 44

45. 7 tunnels to control CSO
• 21 total miles
• 17’ to 24’ diameters
• 100’ to 200’ underground
• Three Deep Tunnel Pump Stations
• Drop Structures, Near Surface Sewers
and Structures
45

46. 46

47. Other CSO Project
Coordination
SST
SST
 DST Overlap (DST)
E140
E140
 DST-4 Forest Hills Park
 DST-5 St. Clair/E 109th
 DST-7 Lakeview and Ada
 DST-8 Lakeview and Superior
 East 140 th Relief Sewer
(E140)
 Doan Valley Tunnel (DVT)
DST
DST  Lakeview and Ada
 Superior Ave
 Shoreline Storage Tunnel
(SST)
DWIRS
DWIRS
 Forest Hills Park Mining Site
47
DVT
DVT

48. DEIRS PROPOSED ALIGNMENT
AERIAL
ALIGNMENT
48

49. CSO Reduction Benefits
Year of Annual
Project Title Completio CSO capture
n
Dugway East Relief Sewer (DEIRS) 2012 85 Million Gallons
Euclid Creek Storage Tunnel (ECT) 2015 344 Million Gallons
Dugway West Relief Sewer (DWIRS) 2016 110 Million Gallons
Dugway Storage Tunnel/E 140th
2020 411 Million Gallons
(DST/E140)
Doan Valley Tunnel (DVT) 2021 348 Million Gallons
Shoreline Storage Tunnel (SST) 2027 502 Million Gallons
Total CSO 1,800 Million
Capture Gallons

50. What’s the benefit?
• Improve water quality
– Clean beaches, recreation
– Protecting clean-water resource
– Improve our regional image
– Neighborhood revitalization
• Regional economic impact
– Job creation
– Tax Revenue

51. LEARN MORE.
dugwaytunnel.blogspot.com
neorsd.org/cleanlake
ASK US.
cleanlake@neorsd.org
TWEET US.
@neorsd
3900 Euclid Avenue | Cleveland, OH 44115 | (216) 881-6600 | neorsd.org