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D. MULTIFUNCTIONAL SYSTEMS P <br /> Lot <br /> Perermm eableabl <br /> e curb <br /> Multifunctional systems Incorporate multiple S `` Stone Trench Level Spreader <br /> stormwater treatments S 1 Grass Filter Ship <br /> ti,c— �w --Optlonal Sand Layer <br /> Enhanced Swales & Ponds- Enhanced swales "" <br /> Bloretentlon Area <br /> contain infiltration/filtration systems which consist <br /> of an Infiltration pond with a layer of filter media , Wet Prairie Plants <br /> (sand/crushed limestone)in their beds.They work " " `w W Gravel Curtain Droln Overflow <br /> best where soils are very coarse, W T=vX _ <br /> — Berm <br /> Bloretentlon- Bforetentlon systems consist of Figure VI-6:Bloretentlon Swale with Level Spreader and Grass Filter Strip-Plan <br /> shallow landscaped areas that allow for ponding Source:Claytor r <br /> and filtration of water runoff. Treatment involves <br /> settling,vegetative uptake,and filtering as water <br /> passes through layers of sand, loam and com- Parldng Lot <br /> post before Infiltration or collection In underlying �-Permeable Curb <br /> perforated pipes. Traditionally designed convex <br /> .� ��—Stone Trench Level Spreader <br /> grassed medians/parkways and piping/catch ba- <br /> sins may.be replaced with concave bloretention — __---Gross Filter Ship <br /> gardens and vegetated stormwater channels, _ Berm <br /> 6 Wet Prairie Plants <br /> UU <br /> Optional Sand Layer <br /> Gravel Curtain Drain Overflow <br /> Figure VI-7:Bloretentlon Swale with Level Spreader and Grass Filter Strip-Section <br /> Source:Claytor <br /> 1l 6"-9"Ponding <br /> 2"-3" Mulch <br /> _--—4'-0" Planting Soll <br /> r <br /> t l� It i Filter Fabric <br /> Gravel <br /> :ii; ate. <br /> �• Drain <br /> Figure VI-8:Bloretentlon Swale-Section <br /> Source:Cloytor <br /> -• • 'De'sign F • •rk. <br /> Stormwater Design Guidbline's <br />