Wastewater Treatment Plant Construction Project
Reaches One Year Mark

 Last Updated: March 2013  

The project to improve and expand the Wastewater Treatment Plant has reached
the one-year milestone. CH2M HILL, the City’s contractor, started construction
on the $35.8 million upgrade and expansion project in March 2012 with work
anticipated to finish in early 2014.

Under an agreement with the City of Wilsonville and the City of Salem,
CH2M HILL is transporting three 5,000-gallon trucks of raw sludge a day
to Salem’s Water Pollution Control Facility for processing. Removal of the
sludge has reduced odor issues at the plant.

“Since we started hauling sludge to Salem we have emptied three of the five
sludge holding tanks and started the retrofitting process on those tanks,”
said  CH2M HILL Design/Build Manager Robert Pieper. “Trucking sewage to
Salem is helping manage odor problems and we don’t expect it to be an
issue during the warmer summer months.”

The plant is being rebuilt, upgraded and expanded and will have modern
wastewater treatment technology, a new odor control system, and increased
capacity from 2.5 million gallons a day to 4 million gallons a day.