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Incorporating Green Stormwater Practices in Municipal Infrastructure Sustainability in Local Government May 4, 2011

Incorporating Green Stormwater Practices in Municipal Infrastructure Sustainability in Local Government May 4, 2011. Bernie Michaud, P.E., P.H. Has an infiltration or evapotranspiration component . Has vegetation, preferably native. Typical Green Stormwater Infrastructure.

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Incorporating Green Stormwater Practices in Municipal Infrastructure Sustainability in Local Government May 4, 2011

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  1. Incorporating Green Stormwater Practices in Municipal InfrastructureSustainability in Local GovernmentMay 4, 2011 Bernie Michaud, P.E., P.H.

  2. Has an infiltrationor evapotranspirationcomponent. • Has vegetation, preferably native Typical Green Stormwater Infrastructure

  3. Focus on Retrofitting Existing Infrastructure and Underused Land Saves on land acquisition costs. Neighbors often resistant to wet ponds. Often constrained by need for an elevation drop between inlet and underdrain outlet. Constraints due to tight soils, high groundwater, and contaminants in watershed.

  4. Parking Lot Biofilter at Bradford Beach

  5. Terrace Biofilter in Madison

  6. Median Biofilter in Verona

  7. Swale w/curb and gutter in Cross Plains

  8. Dry Basin to Biofilter Retrofit - Verona

  9. Dry Basin to Infiltration Basin Retrofit - Middleton

  10. Ravine to Biofilter Conversion, N. Kentucky

  11. Raingardens on School Grounds Excellent Volunteer Project Opportunity Good Candidate for donations and grants. Excellent Outdoor Education Resource Need buy in from School District, teachers, and parents.

  12. Sauk Trails School Biofilter - Middleton

  13. Native Plants – Aesthetics & Appreciation “Weedy” look usually not appreciated Select plants that do not get real tall or are aggressive and take over. Best success with plugs, not seeding. Select plants with varying flowering seasons. Blend in sedges and grasses for variety. Ornamental rocks add nice touch.

  14. Native Plants – Maintenance Include landscaper qualification requirements in bid specifications. Include warranty period of 1-2 years for plant material. Include maintenance period of 2-3 years in bid specifications. Consult nursery or horticulturist for best mowing regime.

  15. Questions? Bernie Michaud, AECOM Bernard.michaud@aecom.com (608)828-8130

  16. Benefits of Vegetated Stormwater Infiltration Facilities. Improved Urban Hydrologic Cycle – improved riparian and stream habitat. Improved aesthetics of the landscaping and terrestrial urban habitat. Pollutant reduction including nutrients and bacteria. Sometimes more acceptable than wet ponds. Fulfills infiltration regulatory requirements. Can reduce CSO frequency. Has “cache” of the Sustainable “brand”. Native vegetation may prolong the design infiltration rate. Provides thermal control of runoff. Groundwater replenishment – good for drinking water supplies. Education – very visual watching the water soak in. Cost effective in terms of reducing CSOs? Carbon reduction with vegetation?

  17. Greenway Swale in Verona

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