Tunneling

Kaneohoe-Kaiula Sewer Pipeline

The Kaneohe/Kailua Sewer Tunnel will increase the reliability of the aging Windward Oahu sewerage system by conveying flows by gravity from the Kaneohe Wastewater Treatment Plant to the Kailua Regional Wastewater Treatment Plant, replacing an existing pump station and force main system. Additionally, the tunnel will store wet weather flows during heavy rain storms. JWF … Continue reading Kaneohoe-Kaiula Sewer Pipeline

Southwest Pipeline Project – Raw Water Intake Caisson, Intake Pipe & Screen

The Southwest Pipeline Project (SWPP) is a regional rural water distribution system which provides potable water service for both domestic and livestock use to the residents of southwest North Dakota. Located adjacent to Renner Bay in Lake Sakakawea in North Dakota, the project site is approximately 300 feet from the banks of the bay. The microtunnel … Continue reading Southwest Pipeline Project – Raw Water Intake Caisson, Intake Pipe & Screen

Ballard Siphon Replacement Rebid

This project included construction of launch and retrieval shafts and 2,100 feet of 114-inch segmentally lined tunnel with an 85.5-inch diameter final liner. Additionally, two existing 36-inch wood stave pipelines were slip-lined with steel liners. Common when the siphon was originally constructed, the original pipes were similar to wooden barrels with metal compression bands holding the … Continue reading Ballard Siphon Replacement Rebid

Santa Ana River Interceptor (SARI) Relocation – SARI Mainline Project

Designed as a typical microtunnel project with several short, straight drives, the SARI Mainline offered JWF the perfect opportunity to offer an innovative value engineering proposal to eliminate shafts and combine multiple drives on the project. This saved the Orange County Sanitation District over $1 million and offered a 20% reduction in the tunneling schedule. … Continue reading Santa Ana River Interceptor (SARI) Relocation – SARI Mainline Project

Balch Consolidation Conduit Shafts & Pipelines

The Balch Consolidation Conduit Shafts and Pipelines project (“Balch”) was a key component of the City’s Controlled Sewer Ooverflow program and required installation of 8,000 feet of 84-inch and 54-inch diameter pipes via microtunneling at depths of 20 to 75 feet to carry sewage and stormwater runoff from the Balch Drainage Basin to the West … Continue reading Balch Consolidation Conduit Shafts & Pipelines

Woods Street Project Group

Emergency Woods Street Trunk Sewer Relocation; Woods Street Trunk Sewer Abandonment; and Emergency Woods Street Trunk Sewer Rehabilitation. This group of three emergency contracts negotiated with the City of Portland were to replace severely deteriorated gravity sewer lines that serve the Ross Island Bridge and Naito Parkway interchange and the Lair Hill residential neighborhood of … Continue reading Woods Street Project Group

Holmes Street Combined Sewer Separation

The sanitary sewers in the Holmes Street area were a combined system with both storm water runoff and wastewater from homes and businesses are carried by the same sewer service lines to the wastewater treatment plant, resulting in system overflows during rain events. The City of Frankfort Sewer Department developed a Long-Term Control Plan for … Continue reading Holmes Street Combined Sewer Separation

Brightwater Conveyance System – Central Contract (Swamp Creek Connector)

In response to growth in the region, King County built a new wastewater treatment system called the Brightwater Conveyance System to serve north King and south Snohomish counties. Brightwater construction included five sites: the treatment plant site in Snohomish County near Woodinville; and four portal sites in Bothell, Shoreline, Kenmore, and unincorporated Snohomish County. Construction … Continue reading Brightwater Conveyance System – Central Contract (Swamp Creek Connector)

Lower Northwest Interceptor – Sacramento Force Main

The Sacramento Force Main Project is the southernmost section of the overall Lower Northwest Interceptor Program. It conveys flows from the Southern Sacramento River Crossing project, just north of Freeport, California, through the Delta Shores area of Sacramento, to the Sacramento Regional Wastewater Treatment Plant (SRWTP). The project crosses the environmentally sensitive buffer lands area … Continue reading Lower Northwest Interceptor – Sacramento Force Main