1. Reedy River Basin Sewer Tunnel Project Update
September 27, 2018

2. What is a Starter Tunnel?
A starter tunnel is the initial tunnel excavation which is typically required to help setup the Tunnel Boring Machine and ancillary equipment for the entire excavation
Starter tunnel length depends on:
Type of Tunnel Boring Machine
Ground Conditions (type and behavior)
Contractor Means and Methods
Worker safety is the overriding factor for all design and construction in tunnels

3. Access Shaft Aerial
Access Shaft

4. Ground Conditions Necessitate Change in Construction Approach

5. Starter Tunnel Construction
Excavation will involve drill and blast methods and mechanical excavation

6. Starter Tunnel – Ground Support
Rib and lagging ground support required for mixed face conditions
Excavation will involve drill and blast methods and mechanical excavation

7. Tunnel Shield
Tunnel shield serves to protect workers in unstable ground
Advanced in 4-foot intervals ahead of excavation

8. Cleveland Park Impacts
Initial closure of public parking in Cleveland Park was 760 days.
ReWa has worked with Contractor to reduce days parking lot will be closed to less than 760.
Ability to maintain public accessibility to parking lot through Spring 2019
Ability to maintain public accessibility to portion of the parking lot following TBM excavation completion

9. Current Project Schedule
Commence work at access shaft – September, 2018
Commence work for starter tunnel – Spring, 2019
TBM launch/Starter tunnel completion – Spring/Fall, 2019
Cleveland Park Restoration – TBD after finalizing design and sequencing
Current Contractual Final completion –June 25, 2020
Actual Final Completion – TBD after finalizing design and sequencing