HomeMy WebLinkAboutLake Oroville Community Update - Lake Oroville Spillways Construction Updates Menchaca, Clarissa
From: DWR Oroville Spillways <oroville@water.ca.gov>
Sent: Thursday, December 2.1, 2017 12:47 PM
To: Menchaca, Clarissa
Subject: Lake Oroville Spillways Construction Update
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Lake Groville, Community Update
December 211, 20°17
Construction activities continue on the Lake Oroville Spillways Emergency Recovery Project.
The following is a construction update from the Department of Water Resources (D R)
Construction on the Main Spillway
• Kiewit has completed concrete dry-finishing work for the season on the main spillway.
• The majority of drainage system work will be compileted by the end of 2017. Some
temporary drain configurations in the middle chute will be kept in place until the roller-
compacted concrete (RCC) walls are replaced with structural concrete walls and a
permanent drain system next year.
• Finishing work on the final shotcrete layer of the temporary RCC walls and the
enriched overlay on the temporary RCC chute continues over the next few weeks to
ensnare a smooth surface.
• Construction will resume on the main spillway in spring 2018. The exact date will be
based oin weather.
Construction at the Emergency Spillway
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• Work continues at the emergency spillway. Crews have completed approximately' 70
percent of the secant pile wall, and full completion is now expected by mid-March
2018.
• The expected completion date has been adjusted to account for additional drilling and
structural concrete placement.
Forensic Team Report Update
• Earlier this Imonth,, the Independent Forensic Team released a statement to the media
sayings the final report would not be, completed for several weeks.
• The IFT recently notified D,WR that it is now targeted for completion in January 2018.
• The final report will include the IFT's previous findings regarding the physical factors as
well as new findings on the human factors that contributed to the February incident.
The report will be made, public.
Oversight Update
• DWR posted memo #14 from the independent Board of Consultants recapping the 14th
meeting on Nov. 30 and, Dec. 1. IDWR is scheduled to meet with the BOC for the 15th
time in late-February 2018.
To view photos and video of the Lake Oroville Spillways construction, visit DWR's Oroville
Spillway photo gallery and YouTube channel,
For more information, follow us on Twitter or Facebook
read our news releases or visit our
,Oroville Spillway Incident webpag
Connect With Us!
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