City of Lodi Storm Water Workshop k h Thursday November 5 2009 - PowerPoint PPT Presentation

City of Lodi Storm Water Workshop k h Thursday November 5 2009 Thursday, November 5, 2009 LID Success “ “Green Streets” ”

why? • Creative ways to: – Maintain / Restore Storage Volume / g • interception, channel, depression – Maintain / Restore Infiltration Volume / – Maintain / Restore Evaporation Volume – Maintain / Restore Runoff Volume a ta / esto e u o o u e – Maintain Flow Paths – Supplement Water Use Supplement Water Use

current methods/limitations • Economics – Cost of Maintaining a Growing / Aging Infrastructure • New Objectives (Public Health / Ecological) – Source Water, Living Resources /Streams – Regulations • NPDES / TMDL’s / ESA

LID ~ creative techniques • Bioretention / Rain Gardens • Parking Lot / Street Storage • Sidewalk Storage • Strategic Grading • Smaller Culverts, Pipes • Vegetative Swales, Buffers & Inlets & Strips • Site Finger Printing g g • Amended soils • Infiltration Swales & • Resource Conservation Trenches • Alternative materials • Flatter Wider Swales • Eliminate Curb and Gutter • Tree Box Filters • Flatter Slopes • Shoulder Vegetation Shoulder Vegetation • Alternative Impervious Alt ti I i • Long Flow Paths Surfaces • Maximize Sheet flow • Tree / Shrub Depression • Reduce Impervious Surface • Maintain Drainage Patterns • Turf Depression • Surface Roughness • Green Roofs • Landscape Island Storage • Landscape Island Storage T Technology h l • Reforestation • Rooftop Detention • Rain Barrels / Cisterns / • Pollution Prevention /Retention Water Use • Roof Leader Disconnection • Catch Basins / Seepage Pits

rain gardens • Advantages – Captures low flow – Urban retrofit b fi – Aesthetics – Pollutant removal • Disadvantages – Small drainage areas – Maintenance Maintenance

rain gardens

rain gardens

Rain gardens

bioswale/vegetated swale • Advantages – Landscape area – Pollutant removal ll l – Reduces need for stormwater piping – Low maintenance • Disadvantages – Mosquitos Mosquitos – Low/Medium pollutant removal

bioswale/vegetated swale

bioswale/vegetated swale

bioswale/vegetated swale

bioswale/vegetated swale

porous/permeable pavement

porous/permeable pavement

porous/permeable pavement

porous/permeable pavement

porous asphalt/pervious concrete

porous asphalt/pervious concrete

permeable brick pavers

permeable brick pavers

permeable brick pavers

Success!

Success!

Success!

Success!

project example

questions?