If you have questions or input, please don't hesitate to reach out to the project team at 541-685-7899 or email@example.com.
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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.
Oct. 25, 2021: Following is a round-up of recent activities on the water storage project.
Third-party pre-blast home inspections are nearly complete. TerraFirma will email the reports directly to homeowners this week.
The additional, unplanned work to reduce the slope angle on the west side of the site is complete.
Excavation of topsoil around Tank #1 (east side) is nearing completion. Excavation for Tank #2 (west side) is about 60% complete.
Drilling is beginning this week. Drilling hours are anticipated to be 7:30 a.m. to 5 p.m. M-F. We expect this will be the noisiest phase of the project and will last 6-8 months.
Blasting is tentatively scheduled to begin this Thursday (10/28) at 1 p.m. The first blast will be a small, test. Starting next week, blasting is expected to take place on Tuesdays and Thursdays between 1-1:30 p.m.
Six seismographs/vibration monitors have been installed around the perimeter of the site.
In the next couple of weeks we will be installing a temporary construction power supply. The new conduit will be bored from an electric box near 4065 Hilyard St. There could be traffic impacts on Patterson St. that day.
EWEB, the contractor and City staff continue to work together to adjust and improve stormwater management. The switch from dry weather best management practices (BMP) to wet weather BMPs is causing some mud build-up on Patterson St., and we have requested a meeting with the City so that we can make adjustments that align with our erosion control permit.
The contractor is sweeping Patterson St. multiple times a week to keep mud to a minimum. We have asked the contractor to move the "biobags" during street cleaning and then replace them afterward. This should help keep bags and surround areas a little neater.
Benches are here! We will be putting two on the west side of the construction site and one on the east side to provide a place to watch the construction.
Just in time for the rainy season, a detention pond has been built to collect runoff from the site. Water is funneled to this low spot and treated with a chemical called Chitosan which works as a flocculant, binding sediment together in a mat which then settles out in the pond. Clean water is then discharged via a pump to the City's storm system.
For now, the pump is being operated by a diesel generator, which will be noisy when running. Once power is supplied to the site, the pump will be run off electricity.
Eventually the pond will be replaced by a permanent rain garden/swale that will collect runoff from the site and discharge it to a newly constructed stormwater system. Long term this will have the same function as the pond but will not require pumping and will flow by gravity to the City's stormwater system.
What is underground blasting?
Underground controlled blasting is a common infrastructure construction method used to break rock for excavation. Holes are drilled into the rock for placement of the blasting agent. Packed dirt is added to holes and above the rock. A seismograph records blast vibrations to verify they are within specifications.
Is it safe?
Yes. Controlled blasting is highly regulated and conducted using safe methods and procedures by trained professionals. Blasts will be monitored by seismographs to maintain acceptable levels of ground motion in conjunction with vibration controls. Each blasting event will occur only after verification of all safety precautions and the site is deemed cleared and secure by the blaster-in-charge.
What can I expect to hear/see/feel?
Air horn safety signals will sound 5 minutes and 1 minute before the blast and at the conclusion of the blast. In addition to the air horn, those very near to the construction site may feel a vibration comparable to a door slam or a large truck driving down the street. Dust suppression systems and heavy blasting mats will be in place to minimize vibration and debris.
When will blasting occur?
Blasting activity will likely begin the second or third week of October and continue for approximately six months. Current plans call for a blasting event once a day between 1-1:30 p.m. on Tuesdays and Thursdays. The blasting schedule is subject to change and to the extent weather or project schedule necessitates blasting outside of those times, blasting would occur during daylight hours Monday through Friday. No blasting will be performed weekends or federal holidays.
What should I do to prepare?
Residents living adjacent to the project site may wish to keep windows closed for the brief period of the blasting, between the one-minute signal and the following all-clear signal. If you are near the construction site and hear an air horn, please be aware blasting activity will occur shortly and follow instructions of site personnel or any additional signage that may be posted.
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|