Wednesday - July 6, 2016

Plant demo almost complete, hydraulic hammer in use

The walls of the old administration building being torn down by the demolition crews.

The walls of the old administration building being torn down by the demolition crews.

The walls of the old administration building being torn down by the demolition crews.

Forming and pouring the curb and gutter along the Mapleton Drive frontage of the plant.

Water Treatment Plant Construction Update

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

Demolition - north of site

Demolition crews have torn their way through the walls of the old administration building, and are now working their way through the existing underground clearwell and into the foundation of the filters and administration building. This means they have reached the point where they are using the hydraulic hammer more frequently, to break up the concrete. Unfortunately, use of the hammer is a very noisy activity. During demolition, neighbors will notice an increase in noise and potential vibration, depending on locations.

Crews expect to complete major demolition work and use of the hammer by the end of next week. Demolition crews are working six day weeks (Monday through Saturday), and averaging 10-hour days, to help get the work finished sooner. We appreciate everyone’s patience during this noisy activity and final stage of demolition.

Once demolition is complete, the existing clearwell will be backfilled and excavation will begin for components of the ozone system, which will be constructed where the filters were previously located. Excavation is expected to take about a week. During this time, neighbors should expect an increase in truck traffic on Mapleton Drive and Kenthorpe Way, noise and potential vibration. Once the excavation is complete, crews will begin installing auger cast piles for the foundation.

Site improvements and landscaping

Work is progressing on the new site walls and sidewalks around new structures.

Hardscaping and landscaping improvements for the rain garden area in the northwest corner continues. This work includes 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 equipment.

Work is also underway on forming and pouring the curb and gutter along the Mapleton Drive frontage of the plant (pictured above). Soon, crews will begin forming the sidewalks along both Kenthorpe Way and Mapleton Drive plant frontages.

Neighborhood construction meetings – next meeting July 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, July 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, July 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.

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.