Thursday - October 27, 2016

Hardscaping improvements continue at the WTP

The second concrete pour takes place for the ozone basin walls

Walls poured in a serpentine pattern

Stone masons installing freestanding walls along the Kenthorpe Way frontage

Water Treatment Plant Construction Update

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

Ozone system – northeast of site

Wall pours continue for the new ozone contactor basin, with the third pour taking place yesterday. The final wall pour is scheduled for early November. Walls are poured in a serpentine pattern (pictured below). With the walls rising, crews will now begin forming the suspended slabs for the top of the ozone basin.

Work is also underway on some miscellaneous piping for the ozone buildings and lagoons, in the northeast corner of the site. This involves excavating, placing piping and conduit, and backfilling (compacting) fill.

Concrete mason walls are almost complete for the ozone generator building! Crews will soon begin installing the structural steel framing. Neighbors close to the site may notice an increase in metal-on-metal noise during this work, as steel beams are hammered into place.

Over the next few weeks, concrete pours will continue about once a week. During pours, neighbors will notice an increase in concrete truck traffic on Mapleton Drive and Kenthorpe Way, noise and potential vibration, depending on locations.

Site improvements and hardscaping

Hardscaping and site improvements are ongoing across the site. The southeast (Mapleton) emergency access driveway entrance has been poured. Freestanding stone walls have been formed along the Kenthorpe Way frontage, and soon crews will begin forming stone walls on the south (Mapleton) side of the site.

Site improvements, stone walls, sidewalks and hardscaping work includes digging and preparing the site, placement of materials, forming, compacting, pouring concrete and saw-cutting stone. During this work, neighbors close to the site should expect an increase in intermittent noise and vibration from equipment.

Neighborhood construction meetings – next meeting November 15

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, November 15 at 6 p.m. Please attend to stay up-to-date on construction progress in West Linn and ask the project team questions.

Completion date

Construction at the plant is expected to be complete in spring 2017 – this includes all landscaping and site work. The pedestrian pathway, linking Mapleton Drive to Kenthorpe Way, will be opened after construction is complete.

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. Crews plan to finish work at 3 p.m. on Monday, October 31. Happy Halloween!

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.