Construction Updates
March 2009 - Construction update: Contracts and corridor come into sharper focus
March 1, 2009 – The data and details of construction contracts for wastewater plant expansion and plans for Intertie 2 pipeline routing came more into focus in February as the RiverHealth Capacity Management Program surged forward to meet state environmental compliance deadlines set for 2011.
The RiverHealth project expands the Tri-City Water Pollution Control Plant in Oregon City, and includes maintenance projects at the Kellogg Creek Water Pollution Control Plant in Milwaukie, as well as a pipeline connecting the CCSD #1 and Tri-City service districts.
Tri-City contracting
An early $10 million phase of Tri-City work was started by Slayden Construction Group of Stayton, OR last summer. With final expansion design and cost estimates completed, the full construction contract with Slayden was approved by the Clackamas County Board of County Commissioners (BCC) on January 15.
The agreement set the guaranteed maximum price for the work at $79.9 million, including the initial $10 million. Sewage treatment capacity will be expanded to help meet CCSD #1’s daily treatment needs through 2015.
The CCSD #1 share is $75.5 million, with the remaining $4.4 million being funded by the Tri-City Service District. The CCSD #1 share pays for the expansion, while the Tri-City share pays for upgrades and modifications to the existing plant.
The design work reached the 100 percent level with the completion of nearly 850 drawings and more than 1000 pages of specifications. The City of Oregon City issued a final building permit in December 2008.
Construction at the site, located on Agnes Road on a piece of land between Interstate 205 and the Clackamas River, is drawing a lot of attention from motorists as activity continues in the huge excavation area. Large diameter piping was placed and encased in concrete during January and February. These pipes connect unit process tanks together. Concrete floor slab work also was started. Construction will continue on under-slab building piping and structural base slabs. Large scale concrete forming, rebar and placement continue through March 2010.
Kellogg Creek plant
The design for the Kellogg Creek Water Pollution Control Plant maintenance project is now 100 percent complete. The project will replace worn out equipment and improve plant hydraulics so the 1970s facility can handle surges during wet weather.
The project is now awaiting a land-use decision by the City of Milwaukie.
Intertie No. 1 pipeline
Intertie No. 1, which is the first segment of the pipeline system south of the Clackamas River, was completed in September 2008. Included was a new connection to divert sewage from the Clackamas Interceptor and the 82nd Drive/Park Place Bridge, which was complete and opened for public use in late November. Startup of the Intertie No. 1 pump station is scheduled for March 2009. Intertie No. 1 will transfer up to 2 million gallons of flow each day to the Tri-City plant and bring relief to the overloaded Kellogg plant.
Intertie No. 2 pipeline
Design work has started after the BCC selected the Johnson Road route, also known as the Three Creeks Corridor, in January. Pump station site selection and specific pipeline alignments along the corridor are being developed.
In 2008, the Clackamas County Board of County Commissioners (BCC) authorized construction of the RiverHealth Intertie 2 (pipeline) project. This project is in support of efforts underway to create adequate sewage collection and treatment capacity for residents and businesses in your wastewater service district, Clackamas County Service District No. 1(CCSD #1), as mandated by the Oregon Department of Environmental Quality.
>>Intertie 2 Pipeline Route Information
Photos and video To view photos of Tri-City expansion, go to the photo gallery: http://www.riverhealth.org/photo-gallery.cfm?CategoryID=11
A video summary of project may be viewed at http://www.riverhealth.org/video.cfm
