MWH earns honors for hydropower project, fish protection work

A trio of hydroelectric power- and dam-related MWH Global projects have received “Outstanding Project” awards from the California region of the American Society of Civil Engineers (ASCE).

The honors — announced at ASCE’s California Infrastructure Symposium and Awards Dinner in Los Angeles this past week — recognized the projects from around the state that best combined contributions to civil engineering progress and to society.

“It’s an honor for both MWH and our partners across California to receive these awards,” said Bruce Howard, American president of government and infrastructure for MWH. “MWH draws on a vast reservoir of talent and experience to manage every water and wastewater project, and these awards demonstrate our ability to work hand-in-hand with local organizations to deliver excellence across varying project categories.”

Earning awards for MWH Global are:

  • Outstanding Construction Project — L.L. Anderson Dam Spillway Modification Project, Placer County Water Agency, Auburn, Calif.

The L.L. Anderson Dam was modified to bring the dam into compliance with current standards, which mandated that its spillway must pass the recently increased probable maximum flood in order to eliminate the possibility of overtopping failure of the dam.

MWH performed multidisciplinary engineering and construction management services on the 231-foot-high dam, which forms the 136,000 acre-feet French Meadows Reservoir.

The spillway modification included two 36’ wide x 18’ high radial gates, rock channel widening, grout curtain, upgraded power & controls, nominal dam raise & roadway replacement, and a new parapet wall across the dam crest.

MWH said the project design and construction overcame multiple challenges, which were used as opportunities to apply creative thinking and optimize the project design and construction.

  • Outstanding Energy Project — Los Vaqueros Energy Recovery Project, Contra Costa Water District, Concord, Calif.

The 1-MW Los Vaqueros Energy Recovery Project was designed to capture excess hydraulic energy in the Contra Costa Water District’s (CCWD) existing Los Vaqueros Pipeline to offset a portion of CCWD’s electrical energy usage and reduce reliance on carbon- based energy.

As the concept design engineer, MWH developed the project concept and provided design documents comprising conceptual powerhouse arrangement drawings and turbine-generator equipment specifications that were used as the basis for design-build teams to develop equipment procurement and construction cost proposals.

MWH was retained for the duration of the project as owner’s engineer providing technical advisory services, during equipment manufacturing, construction, startup and commissioning.

  • Outstanding Water Resources Project — Patterson Irrigation District (PID) Fish Screen Intake Project, Patterson Irrigation District, Patterson, Calif.

The fish screening facility was constructed to prevent anadromous fish and other species including Steelhead trout and Chinook salmon, from entering the district’s pumps.

MWH led a feasibility study, preliminary design, final design, environmental and permitting and construction management. The project included construction of a pile-supported 195 cubic feet per second pump station with a concrete-constructed frame and top deck and riverside mounted fish screens.

The 101-year-old district serves hundreds of farms on 13,500 acres in the Patterson area. This facility will aid the district in maintaining access to its historic water rights.

MWH also received an award for its Vineyard Surface Water Treatment Plant Project in Sacramento, which earned “Outstanding Water Treatment Project” honors. earlier reported that MWH Global President and CEO Alan J. Krause will serve as a keynote speaker at HydroVision International 2013.

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