1. Middlebelt Transport and Storage Tunnel (MTST) Project
July 25, 2016
Middlebelt Transport and Storage Tunnel (MTST) Project
Progress Summary
Presented By: Jim Nash, Water Resources Commissioner
Joel Brown, PE, Project Engineer
Evergreen-Farmington Sewage Disposal System Office of the Oakland County Water Resources Commissioner

2. Introduction Project Purpose and Overview Completed Work Current Work
Middlebelt Road Traffic Impacts
Residential Well Impact Status
Remaining Work
Remaining Construction Schedule

3. Project Purpose and Overview

4. Project Overview Participants
Owner:
Participating Communities:
Engineer:
Contractor:

5. Project Overview Project Purpose-Reduce SSOs

6. Project Overview Project Purpose
Sewer System Upgrades Required to Comply with Michigan Department of Environmental Quality SSO Regulations (Reduce SSOs)
Data Collection, Modeling, LTCAP Developed
2004
WRC and communities enter ACO with the MDEQ
Middlebelt Transport and Storage Tunnel

7. Project Overview Evergreen – Farmington Sewage Disposal System
Hills
Farmington

8. Project Overview MTST Location
9-foot Dia. MTST
Diversion Chambers
Farmington
Hills
Farmington

9. Project Overview Diversion Chamber Function-Dry Weather Flow
Existing Farmington Interceptor
Middlebelt Tunnel

10. Project Overview Diversion Chamber Function-Wet Weather Flow
Existing Farmington Interceptor
Middlebelt Tunnel

11. Project Overview Original MTST Route-Plan View
Recovery Shaft
Manhole TS-5 &
DC-2
Flow
Manhole TS-4
Manhole TS-3
Manhole TS-2 & DC-1
Existing Farmington Interceptor
Existing 18-inch Sanitary Sewer
TS-1 Launch Shaft

12. Project Overview Original MTST Route-Profile View
Manhole
TS-5 & DC-2
Manhole TS-4
Manhole TS-3
90 feet deep
Manhole TS-2 & DC-1
TS-1
Farmington
Interceptor
15-20 feet deep
9 feet
Middlebelt Transport and Storage Tunnel
7,566 feet long under Middlebelt Road from I-696 north to 13 Mile Road

13. Project Overview Revised MTST Route-Plan View
Recovery Shaft
TS-5A & DC-2
Flow
Manhole TS-4 at Utley Street
Manhole TS-2 & DC-1
Dewatering Location
Existing Farmington Interceptor
Existing 18-inch Sanitary Sewer
Launch Shaft TS-1

14. Project Overview Revised MTST Route-Profile View
Recovery Shaft
TS-5A & DC-2
Manhole TS-4
80 feet deep
Manhole TS-2 & DC-1
TS-1
Farmington
Interceptor
15-20 feet deep
9 feet
Middlebelt Transport and Storage Tunnel
5,930 feet long under Middlebelt Road from I-696 north to Chenwood Ct.

15. Middlebelt Tunnel Revised Alignment
*Performing Additional Projects to Maintain Hydraulic Equivalent

16. Completed Work

17. TS-1 Lauching Shaft
TS-1 Shaft Complete July 2015

18. Tunnel Boring Machine (TBM) Assembly

19. TBM Launch

20. Muck Operations
Mining to TS-5A Complete on June 10, 2016

21. Primary Liner Installation

22. Current Work

23. TS-5A Recovery Shaft Installation

24. DC-2 Shaft

25. Middlebelt Traffic Impacts

26. No through access on Middlebelt
Middlebelt Closures X
TS-5A and DC-2 construction February 2016 through November 2016
Local access only closure
Road closure signs notify of police enforcement
Chenwood Ct.
No through access on Middlebelt X
Road closure
Wellington St. X X
Middlebelt Rd.

27. Middlebelt Road Traffic Controls
In the process of devising additional traffic control devices to further limit cut-through traffic around hard closure.

28. Residential Well Impact Status

29. Residential Well Impact Status
Dewatering with four pumping wells southwest of 12 Mile and Middlebelt
Level dropped close to 55 feet below ground surface
Currently 0 no-water situations
Stress we have all contractors on board for rapid response to address any water issue. Working with our insurance agent to cover unforeseen impact costs.

30. Remaining Work

31. Hobas Pipe Installation

32. Manhole Structures TS-2 and TS-4

33. Remaining Construction Schedule

34. Remaining Construction Schedule

35. Questions