Previous Entries

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Friday - November 18, 2016

WTP final structural concrete pour scheduled for next week

Water Treatment Plant Construction Update

We’ve reached some significant milestones with construction at the plant over the years, and as work progresses through the final phase, we are about to reach a few more. Next week, the last major structural concrete pour is expected take place on site for the ozone contactor basin! This marks more than 18,000 cubic yards of concrete poured for new structures at the site.

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Thursday - November 17, 2016

Large crane in full swing at Waluga site

Waluga Reservoir 1 Roof Replacement Construction Update

Great news – crews have made solid progress with demolition and finished saw-cutting the roof yesterday! Neighbors, thank you for your patience over the last few weeks with this very noisy activity.

Some saw-cutting remains for the columns inside the tank itself, but this noise will be more intermittent, compared to the recent roof saw-cutting work. Column saw-cutting is expected to begin in early December, and take about a week to complete.

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Wednesday - November 2, 2016

Partnership Receives $265,220 for Implementing Energy Savings at New Water Treatment Plant

On November 1, the Lake Oswego Tigard Water Partnership received a $265,220 check from the Energy Trust of Oregon for implementing energy saving features into the new water treatment plant. This included installation of variable frequency drives (VFDs) for the pump motors at the new finished water pump station.

VFDs allow the pump station to minimize energy demands and work more efficiently to achieve the daily flow requirements. The VFDs enable the new pumps to operate at different speeds to match water system demands. In addition, VFDs reduce wear and tear on motors, thereby decreasing maintenance costs and prolonging equipment life.

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Monday - October 31, 2016

WR1 roof saw-cutting begins Nov. 7

Waluga Reservoir 1 Roof Replacement Construction Update

A new work platform has been established around the perimeter of the WR1, and shoring support has been set up inside the tank.

Noisy activity starting soon – roof saw-cutting

Starting the week of November 7, crews expect to begin saw-cutting the Waluga Reservoir 1 roof into small pieces. Unfortunately, this activity will be very noisy for nearby neighbors, and is expected to take about two weeks to complete. As the roof is cut into pieces, a crane will remove each portion from the roof, along with the columns.

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Thursday - October 27, 2016

Hardscaping improvements continue at the WTP

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.

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