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CENTER STREET AREA FRAMEWORK + POLICY PLAN <br />F Lrtrlxr <br />6lrIi DINT <br />Harvesting the <br />Value of Water <br />STORMWATER, GREEN BNERASTRUCTURE, AND REAL ESTATE <br />- RFS I HOUNI <br />} Rtt mAPE <br />MA{ V I ENANCE <br />SO.AR CANOPY <br />Man Laid Cenier or Sugainabifity <br />Enslihfle end loonomtc Parfntmance <br />CONCRETE WALK <br />61TUM NOUS PAVEMENT <br />RE LAWN ILANLIy,.pr+IH <br />STCIRw.f WATER CATCHMENT PLANTE4 <br />STORMWATER RUE & IRRIGATION <br />.- - STORMWATER COLLECTION & UNDERGROUND STORAG <br />Stormwater Management System <br />PROJECT DESCRIPTION <br />Bolton & Menk, has completed a preliminary study that analyzes the feasibility of integrating <br />stormwater reuse for irrigation of the proposed Municipal Plaza and adjacent Center Street <br />landscape improvements. The reuse system envisioned will include best management <br />practices to collect and treat runoff, storage tanks to store the runoff, and a pump station <br />and piping to convey reuse water to irrigation areas and surface water features. Most of the <br />stormwater runoff will be generated from Center Street NW and the sidewalks on either side <br />of the road. Stormwater runoff is proposed to be collected and treated by a combination of <br />tree vaults and rain gardens located within the boulevard and parking 'bump -outs on both <br />sides of the street. It is assumed that the runoff would drain directly into each of the rain <br />gardens and tree vaults through surface capture systems (i.e.. curb cuts). <br />Water collected and stored within the storage tanks will discharge via gravity flow to the <br />pump house wet well, where it will be filtered <br />and treated. The Metropolitan Council <br />Storm water Reuse Guide Water Balance <br />Tool for Constant Irrigation Demand was <br />used to determine the percent of time <br />the stormwater reuse system would be <br />functioning, and assumed 1" of water over <br />the irrigable area per week is required for <br />adequate vegetation growth and health. <br />Preliminary estimate of potential <br />construction cost: $800,000 - 950,000 <br />27 <br />