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Broomfield, Colo., Dec. 6, 2012 – MWH, the wet infrastructure sector leader and provider of strategic consulting, environmental engineering and construction services, today accepted a “Best Projects of 2012” award of merit from Engineering News-Record (ENR) magazine for work on the Tri-City Water Pollution Control Plant Expansion (Tri-City Plant) project in Northwest Oregon. The project, completed in December 2010, has received national recognition for sustainable design and community collaboration.

The Tri-City Plant serves nearly 68,000 customers in the cities of Gladstone, Oregon City and West Linn and is situated 14 miles southeast of Portland, Ore. MWH was selected in 2007 by Clackamas County Water Environment Services to provide master planning, design and engineering services for the three-year project to expand capacity.  Oregon based Slayden Construction Group, Inc. acted as lead contractor for the project.

“We’re proud to see recognition for the collaborative efforts of our MWH Global team, Clackamas County Water Environment Services, local contractors and the community,” said Bruce Howard, Americas president of government and infrastructure for MWH. “This collaboration enabled us to deliver the project ahead of schedule and under budget. We strive to better the communities where we live and work and the completed Tri-City Plant expansion project will meet the demands of population growth and ensure long-term benefits for years to come.”

The expansion project increased capacity from 8.4 to 11.9 million gallons per day and allows for future expansion. A state-of-the-art membrane bioreactor treatment center produces effluent that meets Oregon’s highest reclaimed water standards. Pervious “green street” pavements, green roofs on all buildings capturing and holding rainwater, and landscaped channels at the sides of roads were designed to retain and treat runoff.  Additionally planned for the future, the project shall transform an existing landfill to community open space with native plantings, a trail system extension and floodplain forest restoration. Conservation of water and energy, and minimization of the plant’s carbon, noise and lighting footprint features were also factors in the recent accolade.

The Tri-City Plant is a component of the Clackamas County Service District No. 1 RiverHealth Capacity Management Project, which has received national honors for excellence in operations and environmental performance. In addition to the ENR “Best Projects of 2012” award of merit, the project has been recognized by the National Association of Clean Water Agencies “Peak Performance Awards” and by local media outlets.