Thursday - April 14, 2016

Site improvement preparations begin at the plant

Brick veneer is complete for the washwater basin pump room

Structural steel and stud framing for the sand feed area

Water Treatment Plant Construction Update

Miscellaneous piping work

Crews continue installing utility lines for the new administration building – located on the north side of the structure. Work involves excavating, placing pipe, and backfilling the trench. Starting April 14, crews will begin installing a sewer line on site which will connect to the main sewer line on Kenthorpe Way. During this work, there will be a single lane closure near the plant frontage on Kenthorpe Way, as crews connect the line. No parking will be permitted during work hours on the south side of Kenthorpe Way, between the two plant entrances. This is expected to be complete mid-next week. Neighbors close to the site on Kenthorpe Way should expect an increase in noise and vibration during these activities.

Site improvement preparations

Starting this Friday, April 15, crews will begin saw-cutting asphalt along the Kenthorpe Way frontage of the plant, near the curb. No parking will be permitted during work hours on the south side of Kenthorpe Way, along the plant frontage. Over the next few weeks, the curb and gutter will be replaced in this area. This involves removing the existing curb, and forming and pouring the new curb and gutter. Neighbors in this area should expect intermittent single lane closures during this work and an increase in noise.

This spring, crews will begin placing new site walls and preparing some areas for hardscaping and landscaping improvements, including the rain garden near the main entrance of the plant on Kenthorpe Way. This work will include excavators digging and preparing the site, placement of materials, forming hardscaping and backfilling/compacting fill. During this work, neighbors close to the site should expect some noise and vibration from the movement of the equipment. For information about the City of West Linn’s paving schedule for Mapleton Drive and Kenthorpe Way, please contact the Public Works Department on 503-722-5500.

Tree removal at the end of Kenthorpe Way

Starting early next week, the contractor will remove trees and vegetation located in the public right-of-way at the east end of Kenthorpe Way, adjacent to the eastern boundary of the plant site. This is to enable the installation of the sidewalk that will be located at the end of Kenthorpe way, which will join the new pedestrian pathway to be installed on the eastern portion of the plant site. These trees have been approved for removal by the City of West Linn.

Neighbors can expect to see crews of workers, trucks and equipment. Tree and vegetation removal is expected to take about a week to complete. During work hours, there will be a single lane closure to accommodate equipment. Neighbors should expect to an increase in noise from chain saws operating.

Washwater recovery basin – northwest of site

Brick veneer is complete for the washwater basin pump room (pictured above). Swiss pearl architectural panels are now being installed, and crews are starting to test the pumps.

Administration building – north of site

Most of the exterior architectural finishes are complete for the administration building, and crews are focused on the interior of the building. Inside the structure, painting continues, floors are being polished and cabinets and floor coverings being placed in preparation for furniture arrival in May.

New filters – northwest of site

Crews continue making good progress on cleaning, filling, testing and disinfecting the new filters. In May, the new filters are expected to be operational! This will then kick start the final stage of demolition for the old filters and the old administration building.
As part of the filter testing and commissioning, over the next few weeks, neighbors should expect an increase in truck traffic as some large deliveries arrive to the site.
Crews have also begun installing the structural steel and stud framing for the sand feed area between the ballasted flocculation and filters (pictured above).

Neighborhood construction meetings – next meeting April 19

Meetings are held once a month at the Robinwood Station, 3706 Cedaroak Drive, West Linn, on the third Tuesday of the month at 6 p.m. The next neighborhood construction meeting will be held on Tuesday, April 19 at 6 p.m. Please attend to stay up-to-date on construction progress in West Linn and ask the project team questions.

Work hours

Work hours are 7 a.m. to 7 p.m., Monday to Friday, and 9 a.m. to 5 p.m. on Saturday.

WTP construction tours

The next tour will be held on Thursday, May 26 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.

Site plan and glossary

Please refer to the site plan for locations of each structure or our glossary of terms for construction and operation of the WTP.

For more information, please email, call the hotline at 503-697-6502, or attend a neighborhood construction meeting.