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In mid-2021, EWEB began construction on two partially-buried water tanks on an undeveloped property near East 40th Avenue and Patterson St. New water storage tanks are one of several investments EWEB is making to ensure that we can meet critical community needs in the event of an earthquake, including having water available for fire suppression and drinking water distribution.
April 7, 2023: Notice of Saturday Work
We learned this evening that the detention pond at the project site has apparently been vandalized, causing minor flooding in a neighbor's property and on Patterson St. EWEB staff notified the contractor who returned to the site and implemented a temporary fix. The contractor will be back tomorrow (Saturday) with a small excavator to install a new pipe and repair the damaged equipment. Work will take place from approximately 11 a.m. to 4 p.m. and will create some noise. This is not the first time the site has been vandalized. We are working with EWEB Security and Eugene Police to investigate.
Construction crews are preparing to start the next major phase of work: wire-wrapping the tanks and covering them in shotcrete. Please see important safety reminder below.
Wire-wrapping the tanks is required for earthquake resiliency. The cables are high strength, galvanized 7-strand wire that bonds to multiple layers of shotcrete (sprayed-on concrete). More than 90 miles of wire will be applied to the two tanks!
This process ensures the structures can contain the large loads produced by the stored water as well as the strength and durability to undergo horizontal and vertical ground movement during an earthquake.
For safety, the entire site will be closed during this stage of work.
Additional fencing has been installed to allow an additional 100 feet of clearance around the tanks. On the east side of the site, additional trailers will be installed to provide the necessary safety buffer.
The cables used to wrap the tanks will be under incredible tension stress and if one were to snap, the force could be very dangerous. We ask that neighbors and all members of the public stay clear of the site during this stage of work, which is expected to last around 16 weeks.
Other news and info:
Read previous news and announcements
As is common with major infrastructure projects, EWEB has invested years in the research and planning process for the water storage at East 40th, including an ecological survey, geological report and a Triple Bottom Line assessment to evaluate construction options from the perspectives of habitat impacts, costs and disruption to the site and to neighbors. The research and planning process has been invaluable to our ability to make a well-informed and sustainable decision for the entire community that we serve.
Here are some of the considerations that have gone into the design of the E. 40th water storage facility:
The tanks will be sited on the eastern-most portion of the site, on the north side of the ridgeline and both tanks will be constructed concurrently.
Why this location?
A Triple Bottom Line (TBL) assessment developed by an outside engineering firm revealed there is approximately $1 million difference in construction costs between various tank location options, and no significant difference in the construction process or the total number of trees impacted. However, the location on the eastern-most portion of the site came out ahead in all TBL criteria evaluated, and has a few distinct advantages:
Why construct both tanks concurrently?
In addition to the TBL prepared by the outside engineering firm to help determine tank placement, EWEB prepared a second Triple Bottom Line assessment to understand the impacts of constructing both tanks concurrently, compared to the preliminary plan of constructing one tank in 2021, and a second tank in 2030.
For both options, we assessed costs, duration of construction, total number of truck trips, impacts to Patterson St. traffic, and disruption to the site and to neighbors. Looking at several criteria, we determined that building both tanks concurrently has some notable advantages:
It is estimated that constructing both tanks concurrently will disrupt the site for a total of 3 years, compared to a total disruption period of 4 years under a staggered construction schedule.
We are committed to ensuring all customers have access to information about the project, including timeline, benefits, and costs. Those who are highly interested and directly affected, such as site neighbors, will receive up-to-date project details, and have opportunities to share feedback, concerns, and aspirations.
Neighbors currently enjoy open access to the vacant property. Understanding that public access has been a valued community benefit, EWEB is evaluating options for maintaining areas of open space at the project site. We intend to work together with neighbors and other stakeholders to re-landscape portions of the site for public use while ensuring responsible use of public funds.
For any property retained by EWEB and not used for storage facilities, site neighbors and other residents will be invited to participate in decisions that involve:
Opportunities to be involved and share feedback will be advertised on this website and other channels.
|Aug. 3, 2021 Postcard to area residents (656 recipients)|
|Aug. 1, 2021 Register-Guard Op-Ed by General Manager Frank Lawson|
|July 15 Mailer to Area Residents (656 recipients)|
|July 2021 FAN Newsletter article|
|June 3, 2021 Eugene Weekly Article: A Quiet Place for Water|
|May 25, 2021 Neighbor Meeting Video Recording|
|April 2021 FAN Newsletter article|
|April 6, 2021 Edited Transcription of Board Q&A and Video Recording of Board Meeting (Presentation begins at 37:35)|
|April 6, 2021 Board memo and Record of Decision: E. 40th Water Storage Tank Site(s)and Construction Timing|
|Project Status Report March 2021|
|March 2021 SEN Newsletter|
|Murraysmith Triple Bottom Line Site Configuration Evaluation|
|DOWL Ecological Inventory Report Feb. 2021|
|Register Guard Feb. 2021, "Volunteers Help EWEB Restore Oak Savanna at Waters Storage Tank Site"|
|Feb. 25, 2021 Media Release: EWEB to begin native habitat restoration at future water storage site|
|Feb. 2021 Neighbor Letter|
|Oct. 6, 2020 Board memo|
|Ecological Study: Background and Scope|
|July 2020 Article Submitted to SEN Newsletter|
|July 2020 FAN Newsletter article|
|April 2020 neighbor survey results|
|KEZI March 2020, "EWEB to Rebuild Both College Hill and Hawkins Hill Water Storage"|
|March 2020 neighbor meeting letter and FAQ|
|Project Overview - Jan. 2020|
|Water Storage Improvement Project News - Jan. 2020|
|Jan. 2020 Board memo|
|Summary of August 2019 Stakeholder Interviews|
|Arborist Report August 2019|