DENVER — The City of Wilsonville, Ore. celebrated the completion of the city’s new wastewater treatment plant on April 24, according to a press release.

The $42 million Design-Build-Operation (DBO) project, awarded to CH2M HILL, a global full-service consulting, design, construction and operations firm in May 2011, was completed ahead of schedule and under budget, reported the release.

“Teamwork and collaboration are at the heart of DBO projects and was key to the successful completion of the new facility in Wilsonville,” said Joe Glicker, CH2M HILL DBO director. “The plant’s expansion benefits the city in so many ways, and will protect the environment and help the community grow for years to come.”

Wilsonville’s wastewater treatment plant was rebuilt, upgraded and expanded to include modern wastewater treatment technology, a new odor system and increased capacity from 2.5 to 4 million gallons per day (mgd), continued the release, with future expansion capabilities to 7 mgd.

According to the release, the upgrade and expansion included two new structures, including a dewatering and drying building, as well as a head works building to produce Class A biosolids for land application and fertilizer.