City of Lodi - gotSWPPP · City of Lodi Storm Water Workhkshop Thursday, November 5, 2009 LID...
Transcript of City of Lodi - gotSWPPP · City of Lodi Storm Water Workhkshop Thursday, November 5, 2009 LID...
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City of Lodi
k hStorm Water Workshop
Thursday November 5 2009Thursday, November 5, 2009
LID Success
“ ”“Green Streets”
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why?• Creative ways to:
– Maintain / Restore Storage Volume/ g• interception, channel, depression
– Maintain / Restore Infiltration Volume/
– Maintain / Restore Evaporation Volume
– Maintain / Restore Runoff Volumea ta / esto e u o o u e
– Maintain Flow Paths
– Supplement Water UseSupplement Water Use
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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
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LID ~ creative techniques• Bioretention / Rain Gardens• Strategic Grading• Site Finger Printing
• Parking Lot / Street Storage• Smaller Culverts, Pipes & Inlets
• Sidewalk Storage• Vegetative Swales, Buffers & Stripsg g
• Resource Conservation• Flatter Wider Swales• Flatter Slopes
• Amended soils• Alternative materials• Tree Box Filters
Alt ti I i
• Infiltration Swales & Trenches
• Eliminate Curb and Gutter• Shoulder Vegetation
• Long Flow Paths• Tree / Shrub Depression• Turf Depression• Landscape Island Storage
• Alternative Impervious Surfaces
• Reduce Impervious Surface• Surface Roughness T h l
Shoulder Vegetation• Maximize Sheet flow• Maintain Drainage Patterns• Green Roofs
• Landscape Island Storage• Rooftop Detention /Retention
• Roof Leader Disconnection
Technology• Rain Barrels / Cisterns / Water Use
• Catch Basins / Seepage Pits
• Reforestation• Pollution Prevention
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rain gardens• Advantages
– Captures low flow
b fi– Urban retrofit
– Aesthetics
– Pollutant removal
• Disadvantages– Small drainage areas
Maintenance– Maintenance
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rain gardens
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rain gardens
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Rain gardens
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bioswale/vegetated swale• Advantages
– Landscape area
ll l– Pollutant removal
– Reduces need for stormwater
piping
– Low maintenance
• DisadvantagesMosquitos– Mosquitos
– Low/Medium pollutant
removal
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bioswale/vegetated swale
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bioswale/vegetated swale
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bioswale/vegetated swale
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bioswale/vegetated swale
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porous/permeable pavement
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porous/permeable pavement
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porous/permeable pavement
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porous/permeable pavement
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porous asphalt/pervious concrete
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porous asphalt/pervious concrete
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permeable brick pavers
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permeable brick pavers
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permeable brick pavers
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Success!
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Success!
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Success!
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Success!
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project example
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questions?