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Maplewood Mall Stormwater Retrofit Julie Vigness-Pint Ramsey-Washington Metro Watershed District Location The Purpose Meeting MN Pollution Control Agencys shallow lake standard Both internal and external phosphorus loads in Kohlman


  1. Maplewood Mall Stormwater Retrofit Julie Vigness-Pint Ramsey-Washington Metro Watershed District

  2. Location

  3. The Purpose

  4. Meeting MN Pollution Control Agency’s shallow lake standard • Both internal and external phosphorus loads in Kohlman Lake must be addressed • 90% reduction of Kohlman Lake internal phosphorus load • 25% reduction of the total phosphorus (TP) load from the “Main Drainage District” • Target dissolved and fine particulate phosphorus

  5. The Process

  6. • Simon Property Group’s mission statement: To be the preeminent developer, owner and manager of retail real estate. To create and continually enhance stockholder value through the ownership of a high quality portfolio of premier properties and a commitment to our employees, our customers, our retailer and business partners and the communities in which we operate.

  7. Simon Property Group, Inc. • Nationally S&P 500 company and the largest real estate company in the U.S. • Currently own or has interest in 393 properties comprising of 263 million square feet of gross leasable area in North America, Europe, and Asia – Assets include regional malls, Premium Outlets, The Mills, community/lifestyle centers and international properties • Headquartered in Indianapolis, Indiana and employs over 5,000 people worldwide

  8. • Opened in July 1974 • Simon Property Group, Inc. acquired in 2002 • Over one million people visit each year

  9. Concerns from the Mall’s Perspective • Appearance of features • Maintenance • Disruption of shopping, especially during the holiday shopping season • Coordination of agreements from anchor stores, other tenants, who have differing lease agreements • Loss of Parking Spaces

  10. Maplewood Mall

  11. Before and After Renderings Showed the Mall Owners What to Expect

  12. Designs that Minimized Loss of Parking Were Presented

  13. However, in some areas, mall owners were willing to lose spaces to gain aesthetic appeal and traffic control

  14. Concerns from the Watershed District’s perspective • Cost-effectiveness and visibility • Strong interest in keeping some features “above ground” where they are visible and less expensive to construct and maintain • Access to the corporate office where the company’s decisions are made • Many utilities (some not well marked) to deal with in design and construction • Compacted soils- low infiltration rates

  15. The Projects

  16. Phase 1: Entrance Rainwater Gardens Construction in 2009/2010 Designed to capture 1.3 inches off of 7 acres of impervious

  17. Steel fiber was added to some of the rainwater gardens’ sand trench media (5% by weight)

  18. Trees, plants, shrubs were chosen to be colorful, easy to maintain and tolerant

  19. Southlawn Dr Entrance Garden

  20. Southlawn Dr Entrance Garden

  21. Southlawn Dr Entrance Garden

  22. Southlawn Dr Entrance Garden

  23. Southlawn Dr Entrance Garden

  24. Southlawn Dr Entrance Garden

  25. Real Life vs. Rendering

  26. County Road D Entrance

  27. Woodlyn Ave Entrance Garden

  28. Woodlyn Ave Entrance Garden

  29. Woodlyn Ave Garden Inlet

  30. Woodlyn Ave Entrance Garden

  31. Woodlyn Ave Entrance Garden

  32. Lydia Ave Entrance Garden

  33. Lydia Ave Entrance Garden

  34. White Bear Ave Entrance Garden

  35. White Bear Ave Entrance Garden

  36. Beam Ave Entrance Garden

  37. Phase II: Northeast Parking Lot BWSR Clean Water Legacy Grant Final Design in 2010 Construction in 2011

  38. Possible Phase II Project Elements: Educational Signage, and … Porous Pavement Tree Boxes RWMWD Parking Lot Source: Silva Cells

  39. Planters, Cisterns and other Water Features

  40. Phase III: West/ Northwest Parking Lot, and potentially more

  41. Questions?

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