As part of the effort to remove, relocate and replace approximately 2.5 miles of the Escondido Canal that crosses through the San Pasqual Indian Reservation, the project team had to accomplish three major tasks.
When inspections discovered groundwater infiltration in three 72-in. aqueduct tunnels owned by the San Diego County Water Authority, a complex rehabilitation project became necessary.
On the site of a historic sea coast defense built in the late 1800s, this $4.5-million shoreline stabilization project was designed to improve about 4,650 linear ft of shoreline with eroding banks that were unsafe for park visitors.
Superlative-filled tunnel-boring machines are nothing new to Seattle. From the infamous mole that dug a new State Route 99 tunnel to a handful of TBMs carving a new path for Sound Transit’s aggressive light rail expansion, tunneling under the Pacific Northwest city is almost commonplace.
The project team worked with the city of Spokane to establish a next level of treatment filtration system by adding a tertiary membrane treatment to remove phosphorus.
The design for the Anacortes water treatment plant resiliency project called for a 42-in.-dia welded steel pipeline to be extended underneath the Skagit River.
The 12 alluvial wells that supply the South Adams County Water and Sanitation District’s 66,000 customers produce severely hard water, requiring local homeowners to frequently replace plumbing and water heaters and purchase costly in-home softeners that release corrosive brine waste into the sewer.
Crews tasked with upgrading the Portsmouth Wastewater Treatment Plant in the same footprint as the existing plant due to space constraints on Peirce Island had to maintain treatment operations and public pool access.