Pilot Tube Micro-Tunneling – Sedro-Woolley, WA
City of Sedro-Woolley – SR 9 Township Trenchless Sanitary Sewer Project
Working as the prime contractor, we installed 3400 LF of 15” and 24” gravity sewer pipes at .16% grade utilizing our BOHRTEC BM400LS Pilot Tube Micro-Tunneling Machine. This was the first major pilot tube micro-tunneling project in Washington and was featured in the July 2009 edition of Trenchless Technology Magazine.