Water Reservoir

The City of Tigard is beginning construction on a 4-million-gallon water reservoir at Sunrise Park.

This will ensure enough healthy, safe water to:

• Keep pace with the city's growth
• Meet peak demand periods
• Navigate emergencies and natural disasters

We will also upgrade an existing pump station to feed the new reservoir, add a new pump station at the new reservoir, and build a new water pipeline.

Schedule

Summer 2023 through Spring 2025
Construction hours are Monday through Friday.

What to Expect During Construction

• Noise, vibration, dust
• Traffic delays
• Parking restrictions
• Equipment storage

Upcoming Neighborhood Meetings

SW Wintergreen St., SW 153rd Ter., SW Roundtree Dr., SW Menlor Ln, SW Fern St. & SW 135th Ave.
Monday, June 5 from 5:30 to 7 PM
Tigard Public Library, Burgess Community Room

Sunrise Park - Sunrise Ln & 150th Ave
Tuesday, June 6 from 5:30 to 7 PM
Tigard Public Library, Burgess Community Room

Snapdragon Ln., SW Uplands Dr., Rockrose Ln, Yarrow Way, & SW 154th Ave
Wednesday, June 7 from 6 to 7:30 PM
Tigard Public Library, Burgess Community Room

Questions?

Shasta Billings-Beck, Project Manager | 503-718-2698 | Shastab@tigard-or.gov

Jessica Love, Community Engagement Coordinator | 503-718-2671 | Jessica.love@tigard-or.gov

Construction will be starting this spring! The city has hired the contractor Emery & Sons Construction to complete the reservoir and pump station project.

What can you expect during construction?

• Work hours on Monday through Friday
• Construction staging inside Sunrise Park
• Door hangers on neighbors’ doors prior to construction from Emery & Sons
• Noise, vibration, and dust in the work area

As the construction begins, keep checking back for updates on how the project is going.

The Community Advisory Committee met for the second time to take a tour of the Sunrise Park site, learn about the location of the reservoir and proposed future connection trails, and imagine what the future viewing area at the southern end of the park could look like.

The committee also talked about the summary results of the online survey. During the summer, the city invited community members to give feedback about the near-term park amenities they’d like to see along with the construction of the reservoir. The committee observed that the survey takers, like themselves, also value the natural feeling of Sunrise Park and want to preserve it.

The committee will next meet in winter 2023 to see the nearly-final design plans and comment on the types and locations of near-term park amenities.

The Water Reservoir project will support an engagement process for Tigard Parks & Recreation to refine specific ways the Reservoir can enhance Sunrise Park. As an added benefit, the Reservoir Project will be able to leave the site in a condition that allow for beneficial future park features. This could include some additional site grading to allow for future trails or viewing areas for the surrounding natural areas.

Upcoming Meetings

• Neighborhood Meeting: Hosted by the city’s consultant team, the purpose of this virtual meeting is to inform neighbors of the project as currently planned. This meeting is not a decision forum and is not to approve or disapprove the project in whole or in part. It is to share information regarding the project and to solicit constructive input from neighbors and affected property owners. The application for the project will not yet be complete. Therefore, the project will be at various stages of planning and some details may not be available at this time. If you have questions but cannot attend, please contact Tony Mills at 503-563-6151 or by email at millst@aks-eng.com.
  • May 25, at 5:30 p.m.
    Virtual Meeting
    Please register for the meeting:https://www.aks-eng.com/tigard-reservoir18/
• Virtual Open House: Our whole community will have a chance to learn more about the preliminary reservoir design and provide feedback on ways the Reservoir project can start to prepare Sunrise Park for future development. This opportunity will be hosted online in June on the project website: www.engage.tigard-or.gov/reservoir
• Community Advisory Committee: Members will be responsible for reviewing and commenting on potential future park amenities. This includes providing input and advice to the project team on ways to leave the site in a condition to allow for beneficial future park features.
  • June 8, from 5:30-7:30 p.m.
    Virtual Meeting
    

Tigard Public Works is excited to announce a major milestone for the new Reservoir 18 and Pump Station project. After a detailed review, the technical project team has selected Sunrise Park as the best location for reservoir construction.

The new reservoir will ensure enough healthy, safe water to:

• Keep pace with the city’s growth
• Meet peak demand periods
• Navigate emergencies and natural disasters

Comparative Analysis

We considered both Sunrise Park and the Cach Water Site for construction. The city owns both sites and both are at elevations suitable for constructing the reservoir.

The project team conducted a comparative site analysis of the two sites. The analysis looked at several main site selection factors including Permitting and Project Risks, Cost and Constructability, Outside Impacts, and Operations and Resiliency. The team then broke down these main categories further into weighted criteria to compare the two sites.

The team preferred the the Sunrise Park site based on the following key considerations:

• Favorable constructability – for staging area, stockpiling and hauling, and less reservoir foundation work.
• Lower construction cost
• Less constrained site – allowing flexibility of maintenance and future facilities.
• Additional flexibility – relative to sizing a larger reservoir at the site or possibly raising the overflow elevation of the proposed reservoir to reduce earthwork costs.
• Easier permitting process – there are no wetlands at this site
• Reduced construction impacts to the neighborhood – especially heavy truck traffic along portions of Sunrise Lane.

About Sunrise Park

The Sunrise Park property is located on Bull Mountain at the northeast corner of SW 150th Avenue and Sunrise Lane. The City of Tigard purchased the 19.43-acre site in May 2011 with funds from the Parks Bond Program. Three dominant traits of the site include an open meadow surrounded by dense forest, steep slopes, and spectacular views to the north and west. Through a design process and public outreach in 2013, the city decided that the site is best suited to small group activity and passive recreation.

The Water Reservoir project will support an engagement process for Tigard Parks & Recreation to refine specific ways the Reservoir can enhance Sunrise Park. As an added benefit, the Reservoir Project will be able to leave the site in a condition that allow for beneficial future park features. This could include some additional site grading to allow for future trails or viewing areas for the surrounding natural areas.Elizabeth Price Park

Next Steps

In order to meet the City’s stated timeline/schedule for the project, we’ve already begun geotechnical explorations of the reservoir site, including drilling and geophysical surveys. Next, we will do a site survey, arborist evaluation, and initial permitting work to support the design process.

Although this is primarily a reservoir and pump station project, the project aims to leave the selected site in a condition that will be beneficial for future park features. This could include some additional site grading to allow for future trails or viewing areas for the surrounding natural areas. The CAC will meet up to five times for up to two hours each—virtually and/or in person depending on evolving heath guidelines—over the course of this year to discuss project goals and the nature and location of potential park features. We also plan visit the selected reservoir site for a tour. Learn more about the Reservoir 18 and Pump Station Project.

• For community members interested in:
  • Nature parks, trails
  • Water system development
  • Bull Mountain area parks

The city’s design engineer (Murraysmith) and their subcontractors will be performing various site visits to support the site selection technical decision-making process. Work will include initial surveying work and geotechnical borings to collect information at both the Cach Water and Sunrise Park sites to better determine which site could best support the building of a new water reservoir. The subcontractors will be working at both sites intermittently during the month of December 2021.

What the contractor will be doing:

• Using survey equipment to stake the approximate center of the reservoir if it were to be located at each site.
• Drilling geotechnical borings at each site.

What you can expect:

• Work between the hours of 8 a.m. – 5 p.m.
• Survey personnel, geotechnical personnel, and equipment onsite.
• Contractor vehicles parked along the eastern boundary of the Cach Water Site and the southern boundary of Sunrise Park.

FOR IMMEDIATE RELEASE | December 8, 2021

On December 7, 2021 Tigard City Council, acting as the Local Contract Review Board, awarded $2,153,678 to Emery & Sons Construction Group for construction of the Reservoir 18 and Pump Station Project.

“Tigard must plan and construct capital improvements to serve our growing community,” said Rob Murchison, Assistant Public Works Director. “This undertaking will add critical components to our complex water delivery system, which allows the city's professionals to deliver clean drinking water from the River Intake Facility located on the Clackamas River to the homes and businesses throughout the Tigard Water Service Area.”

This project will include design and construction of a new water reservoir, associated new waterlines, and replacement of a temporary pump station. This project supports the city’s goal to “fund the vision while maintaining core services” as it will ensure delivery of healthy, safe water to keep pace with the city’s growth, meet peak demand periods, and navigate emergencies and natural disasters.

The city plans to design and construct the new reservoir at one of two sites in western Tigard. The two sites being considered for construction are Sunrise Park, north of the intersection of SW 150th Avenue and SW Sunrise Lane, and the Cach Water Site, located on the west side of the 15100 block of SW Sunrise Lane. These sites are each currently owned by the city and are at elevations suitable for construction of a new reservoir.

This project will be designed and constructed in two phases using the progressive design-build delivery method: Phase 1: Preconstruction Phase and Phase 2: Construction Phase. This progressive design-build process allows the city and design-builder team to progress through final design and collaboratively agree on the guaranteed maximum price for Phase 2 construction services.

Construction is scheduled to begin in spring 2022 and last through spring 2024.

Costs for this project are split between the Water Fund (52%) and Water System Development Charges Fund (48%).

Beginning the week of May 24, the City of Tigard's contractor (Pacific Habitat Services) will be onsite to conduct an environmental review. This work is part of a project to build a new water reservoir on the west side of Bull Mountain.

What you can expect through June 4, 2021

• Contractors visiting the area during daylight hours.
• Vehicles parked along Sunrise Lane.

What the contractors will be doing:

• Confirming the location and size of wetlands onsite.
  • Contractors will collect data and leave flagging to delineate the boundary of two suspected wetland areas.
  • A map of the boundary and data collected will be submitted in a Report to the Oregon Department of State Lands and the US Army Corps of Engineers to confirm whether or not they will regulate the wetland areas.
• The timeline for this data collection is approximately one week but the review by agencies could take several months.
• This work will inform the project schedule and provide a better understanding of which agencies and permitting requirements will apply to siting of the reservoir.

What's Next

• The city will hire a design-build team to construct a reservoir and pump station.
• Technical analysis will determine the ultimate location of the reservoir, either at Cach Water site or Sunrise Park.
• Construction is expected to begin in the winter 2023.