Friday - March 25, 2016

New filters move into testing and disinfecting stage at the WTP

Foreground: Architectural work continues on the new administration building. Background: a weather barrier coating has been applied to the pump room for the washwater basin.

Water Treatment Plant Construction Update

Information about onsite work is outlined below. Please note, schedules are subject to change.

Administration building – north of site

Siding continues to be installed on the exterior of the administration building, and remaining doors and windows are being installed. Inside the structure, painting is taking place, floors are being prepared for polishing and laboratory cabinets are being installed.

Foreground: Architectural work continues on the new administration building. Background: a weather barrier coating has been applied to the pump room for the washwater basin.

Miscellaneous piping and site work

Crews are installing utility lines for the administration building – located on the north side of the structure. Work involves excavating, placing pipe, and backfilling the trench. Neighbors close to the site on Kenthorpe Way should expect an increase in noise and vibration during these activities.

This spring, curb and gutter improvements are expected to take place along both the Mapleton and Kenthorpe frontages of the site. This is in preparation for the street resurfacing that will be conducted by the City of West Linn on Mapleton Drive this summer.

In April, 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.

Washwater recovery basin – northwest of site

Crews have applied the weather barrier coating to the walls of the pump room, and are working on the roof trusses, decking and brick veneer. Neighbors should expect some intermittent metal-on-metal noise during the roof work.

New filters – northwest of site

Over the next month, crews will begin cleaning, filling, testing and disinfecting the new filters. In May, the new filters are expected to be operational! This will kick start the final stage of demolition for the old filters and the old administration building.

Neighborhood construction meetings – new frequency

Meetings are now 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 contact us or attend a neighborhood construction meeting.