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Regular City Council Meeting Monday,April 22, 2013 Page 8 Mr. Leaf reviewed the remaining process, with tonight's City Council review and consideration of the plan update, and anticipated presentation for their adoption at the May 13, 2013 meeting. After that, Mr. Leaf reviewed the implementation process for applying the plan to private development and public projects (e.g. Complete Streets); and addressing ongoing problem areas (flooding, impaired wa- ters; exploring potential funding sources). Mr. Leaf referenced his experience in working with the Ramsey-Washington-Metro Watershed District, opining that their funding program for local best management projects was very helpful to member cities and stand-alone projects, as well as accessing Clean Water Legacy Act funding. While she was not at tonight's meeting, Mr. Leaf recognized the work done on the plan by his associate, Rebecca Nestingen, PE, a Water Resources Engineer with S. E. H. Councilmember McGehee requested ideas from Mr. Leaf for recharging ground- water for individuals and/or the City other than rain gardens, due to the clay soils in the Roseville area. Mr. Leaf noted that recharging was dependent on soil types; however, he noted that infiltration was possible even with clay soils for small storms and were good to do even when presented with soil limitations. Ms. Bloom advised that with the City's clay soils, infiltration options were con- structed (e.g. Aladdin Street at Roselawn Avenue), with four feet 94') of mixed sand/compost soils substituted for clay allowing drainage within 24 hours even in those heavier type soils. Ms. Bloom noted that rain gardens were engineered to provide a reservoir of materials above the clay; and that native plant were also critical to create a conduit through the clay soils. Mr. Leaf provided another example, tree boxes, where a course gravel base was installed to allow tree roots to grow (e.g. Maplewood Mall landscape islands). Councilmember McGehee requested additional information on rain gardens and possible buffers, using her personal property as an example. Mr. Leaf concurred with Councilmember McGehee's option of a buffer planted to catch water in areas of the most noticeable runoff; and suggested using deeper rooted plants, as well as rain barrels or cisterns for re-use of that rain water for day-to-day garden use. Ms. Bloom referenced the rain water collection and re-use system at Twin Lakes, with a 20,000 gallon re-use chamber and 20,000 gallon infiltration chamber locat- ed under the roadway.