The Kaneohe/Kailua Sewer Tunnel increased 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 was … Continue reading Kaneohe-Kailua Sewer Pipeline
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
The Rock Creek Advanced Wastewater Treatment Facility provides wastewater treatment for an area west of Portland incorporating portion of the cities of Hillsboro. Beaverton, Aloha and other nearby areas. Originally constructed in 1977, the plant has continually expanded to keep pace with growth in the community. The scope of this contract consists of two new … Continue reading Rock Creek AWWTF Gravity Thickeners
In the summer of 2013, the City of Baker City had a cryptosporidium outbreak in their water supply. Baker City residents drink unfiltered surface water and a new water treatment facility was required to meet Environmental Protection Agency Long Term 2 Enhanced Surface Water Treatment rules requiring removal or disinfection of cryptosporidium by October 1, … Continue reading UV Treatment Facility
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
The Bonneville Lock and Dam is located approximately 145 river miles from the mouth of the Columbia River between Oregon and Washington. An existing fish ladder has provided Chinook and Coho salmon a means around the hydro facility at the dam to their spawning areas upstream. Lamprey, an eel-like fish with no fins, have not … Continue reading Bonneville Lock & Dam Washington Shore Ladder Entrance Modifications
This 100-foot wide regional park extends along the riverbank and near-shore area of the Willamette River for a little over a mile between the Marquam Bridge and an existing trail at John’s Landing. This project also is one of the first in the region to attempt large-scale restoration of a blighted riverbank into functioning habitat … Continue reading South Waterfront Greenway – Central District Improvements
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
The expansion of the water treatment plant included increasing existing capacity to 12 MGD and added treatment technology improvements including manganese control and sludge processing. In general, the project included demolition of four filters, flocculation/sedimentation basins and surge tanks; and improvements to existing facilities, including the rapid mix vault, flocculation/sedimentation basins, and filters to incorporate … Continue reading Pony Creek Water Treatment Plant Expansion
This emergency project for the historic Bonneville Branch B Fish Ladder on Bradford Island at the Bonneville Dam on the Columbia River was necessary to repair a scoured fish ladder structure and replace the failed riprap revetment. This work involved a very strict in-water work window to complete the fish ladder and allow the US … Continue reading Bonneville Bradford Island Branch B Fish Ladder Repair
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JWF is teaming with Slayden Constructors as the Construction Manager/General Contractor on the upgrade of the Tyron Creek Wastewater Treatment Plant. The plant is aging ...
JWF was awarded the Box Canyon Hydroelectric Project Upstream Fish Passage Facility project in March 2016. Located near Ione, WA, the project is close to ...
JWF partnered with Cascade Shoring LLC and other partners to highlight trench safety during the week of June 18 - 23, 2018. This reminder of ...
The Northwest Utility Contractor's Association, which JWF is a founding member of, released the following in a press release: Our College scholarship winner is James Seely. James ...
