Project- Allegheny River
What Prompted the need for service? NYSEG / Avangrid proposed gas transmission line, Project Number 2150060.029 replacement crossing beneath Allegheny River in Olean, New York,
- NYSEG / Avangrid
- Liberty Underground Installations, Inc
What challenges/obstacles occurred? We retained a guidance engineer to facilitate the pilot bore, the wire line and mud pressure as requested as part of the ACOE navigational waters permit. After obtaining all required tooling, the pilot hole progressed, at about 600 – ft., began to veer off course. The pilot bore operation had to stop until alternate solution is found. In the meantime NYSEG ordered grouting of the pilot bore hole.
Skills Utilized? TUGI, Inc. recommended to progress the pilot bore from north to south.
What was the ending outcome? TUGI’s thorough planning, drill crew’s wealth of experience and the GC’s unconditional support helped complete this 900 feet of 8-inch HDPE safely, on time and as planned.