Lid Intro Nw

Low Impact Development Introduction Moving towards Technology Based Landscapes, Streetscapes, and Infrastructure ,[object Object],[object Object],[object Object]

Low Impact Development (LID) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Origins ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Regulatory and Go Green!!

Get Ready! ,[object Object],[object Object],[object Object],[object Object]

Defining LID Technology ,[object Object],[object Object],[object Object],[object Object],[object Object]

1. Conservation Plans / Regulations ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Large to Small Scale!

2. Minimize Impacts ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

3. Maintain Time of Concentration ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

4. Storage, Detention & Filtration “LID IMP’s” ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

5. Pollution Prevention ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],30 - 40% Reduction in N&P Kettering Demonstration Project

Where is all this going ,[object Object],[object Object],[object Object]

Green Infrastructure ,[object Object],[object Object]

Green Highways Partnership ,[object Object],[object Object],[object Object],[object Object],[object Object]

Imperviousness & Threshold Theories It’s not so simple - very complex!

A few Issues! ,[object Object],[object Object],[object Object],[object Object]

How well do we maintain the ecological integrity (functions) of aquatic systems (small streams)? Chemical Variables Flow Regime Habitat Structure Energy Sources Biotic Factors Nutrients Temperature D.O. pH Turbidity Organics Toxics Disease Reproduction Feeding Predation Competition Sunlight Nutrients Seasonal Cycles Organic Matter 1&2 Production Canopy Siltation Gradient Substrate Current Instream Cover Sinuosity Width/Depth Channel Morphology Soils Stability Riparian Vegetation Velocity Frequency Runoff Evaporation Ground Water Flow Duration Rain Intensity Scale / Spatial / Temporal / Species Ecosystem Integrity

Capacity Traditional Urban Drainage Sustainable Urban Drainage Stahre, 2006 Water Quality Capacity Amenity The Good Old Days!

Conventional Ultra-Urban Retrofit ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Creating Blackholes of Infrastructure Stormwater Competes With Other Programs

Stormwater regulations in a highly impervious world Why do we need LID Now? ,[object Object],[object Object],[object Object]

Stormwater Wastewater Drinking Water Decentralized Controls are Holistic and Watershed Based

N 2 SANDY SOIL MEDIUM MULCH RAINFALL RUNOFF RUNOFF NO 3 AIR NH 3 PARTICULATES DRAIN INFILTRATION NH 4 METALS , NUTRIENTS BIOLOGICAL FIXATION EVAPOTRANSPIRATION DENITRIFICATION ADSORPTION VOLITILIZATION PLANT MATERIALS NO 2 AMMONIFICATION NITROGEN CYCLE FOR BIORETENTION RECHARGE DENITRIFICATION NITROGEN FIXATION

PICP Open-graded base ,[object Object],(optional) dog SMOG HEAT/ LIGHT RAINFALL ET

Green Strategies Bioretention Permeable Walks Reforestation Soil Amendments

using lid to reduce inflow to combined sewer systems Washington, DC Award winning Barracks Row 2 nd Avenue SEA Street. Photo courtesy of Seattle Public Utilities. Green Factor Rating Systems Seattle, WA Context Sensitive Solutions

Industry Recognized Standards Builder/Developer/Institution Land Use Economic and Design Requirements Local Community Codes/Ordinances and Watershed Requirements Localized Sustainable Development LID Fits with all current rating systems! Its good business!

Lid Intro Nw

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