Phase 1 construction of the Clackamas County Service District No. 1 Capacity Management Program, including expansion of the Tri-City Water Pollution Control Plant in Oregon City, began in 2008. Additional projects associated with Phase 1 include short-term maintenance projects at the Kellogg Creek Plant, construction of conveyance pipelines and a pump station connecting the two districts, and repairs allowing for the 82nd Drive/Park Place Pedestrian Bridge, which carries an essential pipeline over the Clackamas River, to reopen.
The district was required to complete the project by 2011 to meet the terms of an agreement with the Oregon Department of Environmental Quality. The district entered into the agreement to avoid further fines after several instances of untreated wastewater flowing from the Kellogg Creek plant into the Willamette River because the plant was operating beyond its intended capacity.