Bristol & Mavelle Park/Lynmar Basin Stormwater Project
The Lynmar Basin is a low-lying, open space that currently briefly detains stormwater before it makes its way to Lake Edina and eventually Nine Mile Creek through storm sewer pipes. The location was identified as an opportunity to better manage stormwater as part of a larger effort to improve downstream water resources.
The retrofit project will better utilize the space to capture and clean more stormwater than it already does today. The existing dry pond area will be expanded and deepened to promote stormwater infiltration. The infiltration basin will be planted with native trees, shrubs, and forbs.
The project benefits include;
- Less polluted water entering Lake Edina and downstream water resources
- Reduced flooding in the South Cornelia neighborhood
- Enhanced natural resources, including improving pollinator habitat
- A portion of the space kept open for passive recreation, and a new walking path
This project is done in partnership with the Nine Mile Creek Watershed District.
The Lynmar Basin is a low-lying, open space that currently briefly detains stormwater before it makes its way to Lake Edina and eventually Nine Mile Creek through storm sewer pipes. The location was identified as an opportunity to better manage stormwater as part of a larger effort to improve downstream water resources.
The retrofit project will better utilize the space to capture and clean more stormwater than it already does today. The existing dry pond area will be expanded and deepened to promote stormwater infiltration. The infiltration basin will be planted with native trees, shrubs, and forbs.
The project benefits include;
- Less polluted water entering Lake Edina and downstream water resources
- Reduced flooding in the South Cornelia neighborhood
- Enhanced natural resources, including improving pollinator habitat
- A portion of the space kept open for passive recreation, and a new walking path
This project is done in partnership with the Nine Mile Creek Watershed District.
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Construction Update - September 22
Share on Facebook Share on Twitter Share on Linkedin Email this linkThis week
Tree clearing will be completed. Trees in the basin were removed to accommodate lowering the basin and installing a sand trench for infiltrating stormwater. Ash trees along Mavelle Drive were removed as part of the City's plan to slow the spread of Emerald Ash Borer.
Next week
Earthwork and initial soil disturbance begins.
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Construction Schedule Update - Mobilizing Next Week
Share on Facebook Share on Twitter Share on Linkedin Email this linkThe construction crew will begin mobilizing early next week - expect to see equipment and people on site as early as Monday.
They also plan to begin work next week. The first step is tree removal in the basin.
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Construction Schedule Update
Share on Facebook Share on Twitter Share on Linkedin Email this linkThe contractor is eager to get started and plans to mobilize and begin work in September.
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Construction Schedule
Share on Facebook Share on Twitter Share on Linkedin Email this linkGrading and storm sewer work is expected to start in October and continue for approximately 2 months
Seeding and planting will occur in spring 2023
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Contractor Selected
Share on Facebook Share on Twitter Share on Linkedin Email this linkEight responses to the request for bid were received with several coming in below what Engineers estimated.
The Nine Mile Creek Watershed District Board has awarded the contract to U.S. SiteWork.
August 17, 2022 Nine Mile Creek Watershed District Board Meeting Agenda
Next steps include getting more detailed information on the construction schedule.
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Out for Bid
Share on Facebook Share on Twitter Share on Linkedin Email this linkThe project is officially out for bid. We'll describe the outcome of the competitive bid process here later in August.
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City Council Approved Cooperative Agreement
Share on Facebook Share on Twitter Share on Linkedin Email this linkCity Council approved the Cooperative Agreement at its June 21st meeting. Next, it will go to the Nine Mile Creek Watershed District Board Chair to fully execute the agreement.
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Landscape Rendering - Now Available
Share on Facebook Share on Twitter Share on Linkedin Email this linkAn illustration of the plans, also called a rendering, is now available for download.
The design is nearly final. We're planning to add a little more tree diversity and ensure a space is kept clear for sledding off of Bristol Blvd.
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Cooperative Agreement
Share on Facebook Share on Twitter Share on Linkedin Email this linkCity Council will consider approving the cooperative agreement at its June 21st meeting. The document describes how the City and Watershed District will work together to construct and maintain the project.
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Project Update to Watershed District Board - June 15
Share on Facebook Share on Twitter Share on Linkedin Email this linkThe Nine Mile Creek Watershed District Board will receive a project update from staff during their regular monthly meeting.
June 15, 2022 starting at 7PM via zoom at ninemilecreek.org/lynmar
Join the meeting to learn how public comments were incorporated into the design, next steps, and an anticipated construction schedule.
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Who's Listening
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Phone 952-826-0445 Email JWilson@EdinaMN.gov -
Phone 952-903-5713 Email RBintner@EdinaMN.gov -
Phone 952-826-0317 Email TSwenson@EdinaMN.gov -
Phone 952-835-2078 Email RAnhorn@ninemilecreek.org
Key Dates
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September 2022
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August 17 2022
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June 21 2022
Lifecycle
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Introduce Project
Bristol & Mavelle Park/Lynmar Basin Stormwater Project has finished this stageApril 2021
We will introduce the project and seek input on current open space use and measures to control stormwater.
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Develop Initial Concepts
Bristol & Mavelle Park/Lynmar Basin Stormwater Project has finished this stageMay - July 2021
We will share initial concepts and let you know how your input influenced the design concepts.
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Refine Concepts
Bristol & Mavelle Park/Lynmar Basin Stormwater Project has finished this stageJuly - September 2021
We will consider input, refine concepts, and share the outcome.
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Make a Decision
Bristol & Mavelle Park/Lynmar Basin Stormwater Project has finished this stageSeptember 2021
Staff will make a recommendation to the City Council and Nine Mile Creek Watershed District Board of Managers. City Council will make a decision. Nine Mile Creek Watershed District Board of Managers will authorize staff to undertake a feasibility study to be considered to order the project.
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Close the Loop
Bristol & Mavelle Park/Lynmar Basin Stormwater Project has finished this stageLate September 2021
We will tell people what decision was made. The public input portion of the concept design development process ends.
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Make a Decision
Bristol & Mavelle Park/Lynmar Basin Stormwater Project has finished this stageMarch 2022
The Nine Mile Creek Watershed District Board will hold a public hearing, consider the feasibility study and make a decision.
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Added: Detailed Engineering and Landscape Design Begins
Bristol & Mavelle Park/Lynmar Basin Stormwater Project has finished this stageSummer 2022
The Nine Mile Creek Watershed District Board approved the concept plan at their March Board meeting. This moved the project from the concept design phase to the detailed engineering and landscape design phase.
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Added: Cooperative Agreement Decision
Bristol & Mavelle Park/Lynmar Basin Stormwater Project has finished this stageSummer 2022
City Council and Nine Mile Creek Watershed District consider entering into a cooperative agreement which describes how the two will work together.
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Added: Design and Bid
Bristol & Mavelle Park/Lynmar Basin Stormwater Project has finished this stageSummer 2022
Staff will complete the design and prepare construction bid documents. A contractor will be selected through a competitive process.
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Added: Construction
Bristol & Mavelle Park/Lynmar Basin Stormwater Project has finished this stageFall 2022
Construction begins.
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Added: Restoration and Maintenance
Bristol & Mavelle Park/Lynmar Basin Stormwater Project is currently at this stage2023 and Beyond
Disturbed turf areas will be restored and natural areas will be planted.
Photos
Documents
- Lynmar Basin Rendering_Sept 2022.pdf (3.53 MB) (pdf)
- Lynmar Basin Rendering_90%_June2022.pdf (7.59 MB) (pdf)
- Sept 21 2021 Presentation.pdf (1.55 MB) (pdf)
- Lynmar Basin_ConceptPlan_SummaryReport_090921.pdf (4.77 MB) (pdf)
- Initial Concepts Layouts_July 2021 (2.71 MB) (pdf)
- Participation Plan.pdf (182 KB) (pdf)
- Lake Cornelia and Lake Edina Feasibility Study Report (7.95 MB) (pdf)
- Feasibility Study_February 2022.pdf (5.54 MB) (pdf)