Another water program milestone reached!
A significant milestone was reached over the last week, with the new “raw” (untreated) water pipe being placed into service! Almost 2 ½ miles of pipe connects the new river intake pump station on the Clackamas River in Gladstone with the treatment plant in West Linn, traveling under the Willamette River.
Overall, crews are making solid progress on phase B construction activities, including the new administration building, new filters and new washwater recovery basin. Work is on track to begin startup and testing for this phase of work early next year, with the new filters and basin being operational by late spring.
Information about onsite work is outlined below. Please note, schedules are subject to change.
Miscellaneous piping work – southeast of site
With the new raw water pipe in service, crews are now removing a temporary raw water line near the southeast of the site. Starting next week, a new 48-inch overflow pipeline will be installed, from the clearwell to the lagoons, located in the southeast of the site. Following this, an 8-inch water line for the City of West Linn will also be installed in the same area. These activities are expected to take about four weeks to complete. Work involves excavating, placing pipe, removing pipe and backfilling the trench. Neighbors close to the site should expect an increase in noise and vibration during this activity.
Administration building – north of site
Architectural work continues for the administration building. The structure was tented earlier this month to allow for the exterior coating to be applied in dry conditions. The white coating pictured right is a weather resistant barrier that is applied to the exterior of all new buildings.
Plumbers and electricians continue to install the HVAC system, plumbing and electrical conduit throughout the structure. Crews are working to install the roof and siding, however, this is weather dependent.
New filters – northwest of site
Concrete pours continue about twice a week for the new filters, with several trucks arriving and departing the site on Kenthorpe Way during a pour.
The shoring support for the suspended slab deck is in place, and crews progress with concrete pours for the interior walls and deck. Inlet and outlet piping is in the process of being installed through the filters, connecting to the washwater basin and clearwell.
Work taking place within the filter gallery, which holds a network of inlet and outlet pipes.
Washwater recovery basin – northwest of site
All walls are now poured for the washwater basin! This week, crews will begin water testing the structure, which is expected to take about a week. Once this is completed, a coating will be applied to the concrete, however, this is weather dependent. After the coating is applied, crews will backfill around the basin – this is expected to take about two weeks to complete. During this activity, neighbors located close to the site should expect an increase in noise and vibration.
Neighborhood construction meetings – next meeting January 19, no meeting January 5
Please note, there will be no meeting held on January 5 at Burgerville. The next neighborhood construction meeting will be held at Robinwood Station Tuesday, January 19 at 6 p.m. Please attend to stay up-to-date on construction progress in West Linn and ask the project team questions.
- The first Tuesday of the month at 7:30 a.m., at Burgerville, 18350 Willamette Drive, West Linn.
- The third Tuesday of the month at 6 p.m., at the Robinwood Station, 3706 Cedar Oak Drive, West Linn.
Work hours are 7 a.m. to 7 p.m., Monday to Friday, and 9 a.m. to 5 p.m. on Saturdays. In observance of New Year's Day, no work will take place on Friday, January 1. A small crew may be working on site Saturday, January 2.
WTP construction tours
The next tour will be held on January 28 at 10 a.m. Tours are held every two months on the fourth Thursday. Advance registration is required and space is limited. Please contact us and indicate in the subject line you would like to attend the next tour, along with your contact information.