Thursday - June 26, 2014

West Linn Pipeline Construction Update: Horizontal Directional Drilling site (end of Mapleton Dr.)

An excavator arriving to the site today

Pipe casing installation starting tomorrow – noisy activity

The pipe casing work is expected to begin tomorrow at the HDD site, just north of Mary S. Young Park. The 60-inch steel casing will be installed using a large pressurized hammer, through softer soils to reach solid ground (about 200 feet). The casing provides protection for the pipe to be tunneled under the river.

During the pipe casing hammering (known as pipe ramming), it will be very noisy for approximately 1 - 3 hour periods during work hours, depending on conditions. Work hours are 7 a.m. - 7 p.m. Monday to Friday, and Saturdays from 9 a.m. - 5 p.m. Depending on locations and terrain, neighbors may hear noise during the casing hammering. The contractor will aim to start the noisiest work after 9am through mid-afternoon. Following each hammering period, there will be a few hours of cleaning and welding, which is not as noisy. The hammering schedule will vary depending on progress and conditions – it could take place a few times a day, or occur every 1-2 days. This work is expected to take about two weeks to complete, depending on ground conditions. Immediate neighbors to the site may experience some vibration during the casing installation. No work will take place on the Fourth of July weekend.

Read more for information about:

  • Meldrum Bar Park – casing installation continues
  • Neighborhood Construction Meetings at the Burgerville in West Linn

Meldrum Bar Park – casing installation continues

Casing installation has been underway for almost two weeks at the Gladstone HDD site in Meldrum Bar Park. Crews are running into many cobbles and boulders as they install about 400 feet of pipe casing prior to drilling the tunnel under the river. Neighbors in West Linn opposite Meldrum Bar Park may hear noise during this activity. Due to tough ground conditions at the site, this work is expected to take another two weeks to complete. Work hours in Gladstone for the HDD are 7 a.m. - 6 p.m., Monday to Friday and some Saturdays. No work will take place on the Fourth of July weekend. Please visit the website for more information on construction activities in Gladstone.

Neighborhood Construction Meetings at the Burgerville in West Linn

The 19th bi-monthly neighborhood construction update meeting was held on Tuesday, June 17, at Burgerville in West Linn. All meeting materials are posted on the project website on the “past public meetings” page, including summaries, agendas and updates. The May 20 summary is available on the Meetings page.

The next neighborhood construction meeting will be held on July 1, at 7:30 a.m. in the downstairs restaurant area at Burgerville, 18350 Willamette Drive in West Linn. Meetings are held at 7:30 a.m. on the first Tuesday of the month and 6 p.m. on the third Tuesday of the month. Meetings include updates on the HDD pipeline work and water treatment plant work occurring in West Linn.

For more information, drop-in to a bi-monthly meeting at Burgerville, visit the work underway map, contact us or call the project hoteline at 503-697-6502.

A noise barrier is now installed at the site