Thursday - March 9, 2017

Into the final stretch: three months of construction remain at the WTP

Vegetated garden roofs have been installed on three buildings, including the electrical building shown here.

Water Treatment Plant Construction Update

Although the weather is persistently dreary, cold and wet, spring is definitely in the air, which means we are embarking on the final three months of construction at the plant!

The following briefly outlines a schedule for major activities that remain. Please note, this is subject to change and several activities are weather dependent:

  • March: ozone system startup and testing, paint and caulk inside ozone building, pour bases for light poles, form curbs, gutters and catch basins, install site walls, build stormwater features, install duct bank and miscellaneous piping
  • April: install site irrigation, form pedestrian pathway, install pervious pavers, grade site, pave asphalt areas (weather dependent)
  • May: install landscaping, remove mobile crane, remove construction trailers
  • Early June: complete final cleanup items, remove green security fence, open pathway after construction is complete

Recent work

Civil crews have been busy working on sidewalks, curbs, gutters and site walls on the north side of the administration building and ozone generator building. The temporary storage shed that was located near the Mapleton entrance has been removed. Crews have also installed the vegetated garden roofs on the finished water pump station, administration and electrical buildings. Irrigation lines will be tested shortly for the garden roofs.

Last month, the liquid oxygen tank was filled for the first time. Although we anticipated an increase in noise during the first fill, it resulted in minimal noise and disruption.

Architectural siding is now complete for the ozone generator building. Startup and testing of the ozone system begins soon, with the system expected to be online next month.

Neighborhood construction meetings – next meeting March 21

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. A summary from the February 21 meeting is here.

The next neighborhood construction meeting will be held on Tuesday, March 21 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. Typically crews are actively working 7 a.m. – 3 p.m. Monday to Friday, with some Saturday work.

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.