Project Library

Installation of 160 feet of 30-inch diameter natural gas transmission pipe located near the City of Indio in the Coachella Valley of California. The bore crossed under Interstate 10 with varying ground conditions which required us to switch back and forth from auger boring to hand mining to remove rocks and boulders which obstructed the bore path.

This project included the installation of 285 kilometers of 12” and 16” pipe in Alberta.

This project was comprised of multiple phases, including installing a new pump station, automatic bypass system, metering projects, Horizon terminal expansion, and Fox Creek plant construction.

This complex project included the replacement of a 7,200-foot-long pipeline in Patterson, CA, and represented the longest horizontal directional drilling project in PG&E history. We achieved this monumental undertaking and earned recognition by Cal/OHSA with the Golden Gate Partnership Award.

We managed the upgrade and modernization of natural gas pipelines in a major metropolitan area in Southern California, including replacing existing and strength-testing new pipes.

The project included the installation of six miles of 16” natural gas transmission line, one main line valve assembly, three regulator stations, and an accompanying fiber optics line. Safety features included upgrading thicker steel, a warning mesh above the pipeline to prevent accidental excavations, automatic shut-off valves, and fiber optic technology to detect ground disturbances that could affect pipeline integrity.

Installation of 4,023 feet of 63-inch diameter fiberglass reinforced pipe (FRP) in five drives of various lengths using an earth pressure balance (EPB) tunnel machine through a mix of caliche and sand with substantial groundwater being present. Two of the drives required tunnelling from the high side further complicating the process and with flooding a constant threat, shafts had to be dewatered around the clock. The project also required switching between a screw conveyor and traditional conveyor depending on the situation to complete the job as planned.

Shaft excavations, shoring, and the installation of two 110-inch diameter, 825-foot long rib and lag tunnels for two water lines and a sewer line of varying diameters to service a new semiconductor manufacturing facility. The project required day and night shifts with a wheeled tunnel boring machine (TBM) to progress through the caliche, rock, and cobble encountered along the tunnel horizon.

Installation of 1,056 feet of casing and sewer carrier in three drives using the guided boring method of installation, whereby pilot tubes are first installed then followed by a reamer and cased augers to complete the drive at the proper diameter. Following tunneling, high-density polyethylene (HDPE) sewer pipe was installed on spacers and pulled into the casing then tied in. Groundwater and substantial rain required continuous dewatering and removal of equipment from the pits every day to prevent equipment damage and impacts on the project.

Construction of 18 pipeline systems totaling 36km and ranging in diameter from 14” to 48”. Most systems consisted of heavy wall carbon steel material (>.500”) and included 48” KEP & KID RCW Lines, 24” Pond 6 Discharge Line, 36” Pond 4/5 Discharge Lines, 30” KFTT IP and LP Lines, 14” & 16” Flotation Thickener Underflow Lines, 24” KFTT TSRU Line, 36” & 48” KFTT Water Transfer, a total of 850m Road crossing Auger Boring, and a total of 3,700m of road crossings.

Phase 1 System 1, 3 and 4 Modifications. Pipeline install and Wye Switch Installs including installation of ~3km CS sleeves and culverts of various diameters, ~1km of 36” A/G piping, ~ 2.4 km of Road Crossings, ~1.1km of 42” U/G piping, ~10.2Km of 28” CS Pipeline, ~45 MT of structural steel, ~1.2Km of 30” CS Pipeline, and coating of 42” U/G Piping.