From "Tunnel Business Magazine"
Project Update > Microtunneling Project
Name: Hidden Lake
Owner: King County, Washington
General Contractor: Frank Coluccio Construction
Microtunneling Sub Contractor: Frank Coluccio Construction
Pipe Size : 1,500 feet of 42: OD Permalok Steel Casing
   
 

The preliminary work on the project started in mid-July.  Microtunneling operations are expected to start in November and wrap up by March 2007.  As part of a $20 million open cut project.  Coluccio will perform the microtunneling portion, which involves installation of approximately 1,500 feet of 42" OD Permalok steel casing.

Using the Iseki 900 from the Renton project, crews will work in ground conditions expected to consist of glacial till, sand and cobblestone, while potential external factors include the project's residential surrounding and relatively tight working quarters.