MWH Global is the proud recipient of four Engineering Excellence awards presented by the American Council of Engineering Companies (ACEC) of Washington. The awards recognize our company’s outstanding wet infrastructure expertise in the state, including honors for our water conveyance, hydropower and environmental services.
Gold Award for Complexity
Lake Chelan Hydropower Modernization
MWH partnered with the Public Utility District No. 1 of Chelan County to modernize the Lake Chelan Hydropower Project. The project, originally built in 1928, was modernized to extend the service life of generating equipment, maximize energy production and eliminate the need for periodic “wear and tear” repairs. The modernization effort was completed in 2011, meeting project goals and reducing overall environmental impact.
Silver Award for Complexity
Brightwater Conveyance Final Design – East Contract
The Brightwater Conveyance system consists of approximately 13 miles of large diameter tunnels constructed at depths of 40 to 440 feet below the ground surface through an urban area, designed to convey up to 170 mgd of treated and untreated wastewater. MWH worked with King County as part of a joint venture to design a 14,000-foot-long tunnel to convey influent to, and effluent from, the Brightwater Treatment Plant. Construction was completed in 2010 with final acceptance in April 2011.
Replacement of Water Transmission Lines 2 & 3, Phase 6 Project
In response to deterioration of existing elevated pile-supported pipelines, the city of Everett implemented a plan to replace approximately 4,000 linear feet of twin 48-inch-diameter steel pipelines. MWH worked with the city to design the project, addressing a number of unique environmental and technical challenges, including managing implementation in federally regulated wetlands, soft soil materials, and extending 90 feet below the ground surface. The design solution included the installation of two new steel two-pile bents spaced at 60-foot intervals.
Elwha Fish Hatchery Project
The Elwha Fish Hatchery Project addressed more than 70 miles of spawning and rearing habitat that was opened following the removal of two dams on the Elwha River. The project was constructed to produce four species of Pacific salmon (coho, pink, chum and sockeye) and the steelhead trout for release at the hatchery and planting into the river and tributary stream in the upper watershed. The project enables the Lower Elwha Klallam Tribe to continue to harvest fish for commercial and ceremonial purposes while the habitat is restored and natural fish production returns.
ACEC finalists in 12 project categories are rated on the basis of uniqueness and innovative applications; future value to the engineering profession; perception by the public; social, economic, and sustainable development considerations; complexity; and successful fulfillment of client/owner’s needs, including schedule and budget. The awards were presented at a ceremony on January 20, 2012.