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July 2024
Starting as early as next week, King County’s Sammamish Plateau Diversion Project team will begin soil and groundwater surveys with drilling equipment on East Lake Sammamish Parkway.
Work is anticipated to take about two to three weeks to complete, depending on permit and field conditions.
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What to Expect
Starting as early as next week, King County’s Sammamish Plateau Diversion Project team will begin soil and groundwater surveys with drilling equipment on East Lake Sammamish Parkway.
Work is anticipated to take about two to three weeks to complete, depending on permit and field conditions.
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Temporary single-lane or turn-lane closures on East Lake Sammamish Parkway Northeast between Northeast 49th Place and Northeast Inglewood Hill Road.
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Work hours are anticipated to be between 8 a.m. and 5 p.m.
- Work to take about one to two days at each site.
- Message signs on East Lake Sammamish Parkway Northeast with advance notice.
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Flaggers to direct drivers travel through the area.
- Local and emergency access to homes.
- Noise, dust, and vibrations typical of a construction site at the drilling site.
- Geotechnical drilling equipment in the work area.
Visit the Sammamish Plateau Diversion Project webpage for the most up-to-date information about this work, including when work will begin.
Approximate location of work activities
We anticipate that crews will temporarily close a single lane or turn lane along East Lake Sammamish Parkway Northeast near your home. This map shows the approximate closure and drilling locations.
You may be wondering if this information is already available through other projects like the East Lake Sammamish Trail and projects on the roadway. Wouldn’t these projects have soil and groundwater information available, saving time, budget, and community impacts?
Project designers use existing information they can find in what is called a desktop survey. But a wastewater project might need different information at different depths than a road or trail project. Project designers will plan for more underground survey work when they find gaps in available information.
Know anyone who will be affected by this work? Please forward this email to your friends, neighbors, and community groups. If you were forwarded this email, please consider signing up for our email list.
We anticipate that crews will temporarily close a single lane or turn lane along East Lake Sammamish Parkway Northeast near your home. This map shows the approximate closure and drilling locations.
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Project Update
This fieldwork will help the project team continue development of project options. Once the project team has identified project options, you will have opportunities to review them, ask questions, and give us feedback. Currently, we expect to share identified options later this year.
We're here for you!
We know that large construction projects can be stressful for communities, and there are a lot of construction projects going on across the Eastside. Our project team is committed to being available and continuing to work with neighbors, businesses, visitors, and commuters every step of the way. We will be here for you all the way through design and construction and into operations. Feel free to contact us at any time!
Contact us
Monica Van der Vieren,Community Services Lead
Monica.VanDerVieren@kingcounty.gov, 206-477-5502
Visit us at kingcounty.gov/SammamishPlateauDiversion
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