Workshop C Urban Freeway Design -- Ways to Reduce Negatives for Surface Waters Carrie...
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Transcript of Workshop C Urban Freeway Design -- Ways to Reduce Negatives for Surface Waters Carrie...
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7/30/2019 Workshop C Urban Freeway Design -- Ways to Reduce Negatives for Surface Waters Carrie Bristoll-Groll
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Urban Roadway Stormwater Runoff Quality
Stormwater Impacts from Urban
Roadways
Carrie Bristoll-Groll, PE, CFM
Principal
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Urban Roadway Stormwater Runoff Quality
Stormwater Impacts from Urban Roadways
Roadway Standards
Need For Water Quality
Design Examples
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Urban Roadway Stormwater Runoff Quality
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Urban Roadway Stormwater Runoff Quality
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Urban Roadway Stormwater Runoff Quality
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Urban Roadway Stormwater Runoff Quality
Roadway Drainage Design Guidelines
(abbreviated)
Water shall not pond on the driving lanes
The flow of water shall not create a spread(width of flow) that exceeds the shoulder
width in a 25-year storm event.
Storm sewer is designed to a 25-year stormevent, check no surcharging occurs at inlets
during a 50-year event.
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Urban Roadway Stormwater Runoff Quality
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Urban Roadway Stormwater Runoff Quality
Roadway Drainage Design Results
Stormwater runoff from roadwaysis getting to inlets as quickly and
efficiently as possible
Public safety is the #1 priority
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Urban Roadway Stormwater Runoff Quality
I-94 So. Milwaukee County Airport Spur
BMPs are Within
Airport Concern Area
5 Biofiltration Devices
Porous Asphalt and
PaveDrain Parking Lot
2 Stream Relocations
Floodplain
Reconnection
6 Dry Detention Basin
Vegetated swales
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Urban Roadway Stormwater Runoff Quality
I-94 So. Milwaukee County
Airport Spur
3 Biofiltration Devices
Vegetated swales
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Urban Roadway Stormwater Runoff Quality
Airport Spur Project
3 Biofiltration Devices
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Urban Roadway Stormwater Runoff Quality
Airport Spur Project
Biofiltration Devices: #1 near railroad
intersection
#2 at intersection of 6thand Grange
#3 within spur mediannear Howell
Biofiltration Device
Locations
Ri ht f
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Urban Roadway Stormwater Runoff Quality
Emergency
Spillway
Outlet Structure
1-ft Ponding
Depth
Underdrain &
Storage Layer
600-ft of
Roadway and
ROW
Right of
Way Biofiltration
Devices
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Urban Roadway Stormwater Runoff Quality
Biofiltration Device
#1 Location
Airport Spur ProjectBiofiltration Device #1
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Urban Roadway Stormwater Runoff Quality
Airport Spur ProjectBiofiltration Device
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Urban Roadway Stormwater Runoff Quality
Airport Spur ProjectBiofiltration Device-Fall Construction
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Urban Roadway Stormwater Runoff Quality
Airport Spur ProjectBiofiltration Device-Spring Runoff
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Urban Roadway Stormwater Runoff Quality
Airport Spur ProjectBiofiltration Device-Spring Runoff
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Urban Roadway Stormwater Runoff Quality
Airport Spur Project
Biofiltration Device Summary
60% combined TSS reduction from AirportSpur using three Biofiltration devices
Less than 24-Hour Drain Time
Maintenance to be performed by airport staff
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Urban Roadway Stormwater Runoff Quality
Airport Spur Project
Vegetation
Wildflowers such as
Black EyedSusan
Boneset GoldenAlexander
Blue Flag Iris New EnglandAster
Live plants supplemented with WisDOT Seed Mix No. 75
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Urban Roadway Stormwater Runoff Quality
Airport Spur Project
Vegetation
Grasses, Sedges & Rushes such as
Fox Sedge Big Bluestem Blue Fescue Dark GreenBulrush
PorcupineSedge
http://www.co.washburn.wi.us/departments/landwatercons/info/planting/grasses/identification.htm
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Urban Roadway Stormwater Runoff Quality
I-94 So. Milwaukee County Ryan Road
BMPs are Within
Airport Concern Area
5 Biofiltration Devices
Porous Asphalt and
PaveDrain Parking Lot 2 Stream Relocations
Floodplain
Reconnection
6 Dry Detention Basin
Vegetated swales
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Urban Roadway Stormwater Runoff Quality
I-94 So. Milwaukee County
Stream Relocations
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Urban Roadway Stormwater Runoff Quality
Ryan Road Park and RideCurrent Proposed Plan
1 bioswale
1 biofiltration device
Porous asphalt pavement Porous pavement system (PaveDrain)
Ryan Road
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Urban Roadway Stormwater Runoff Quality
Porous Pavement
Ryan Road
Interchange
Biofiltration
Bioswale
Dry Detention
Completed
Stream
Relocation
Future
Floodplain
Reconnection
Future Dry
Detention
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Urban Roadway Stormwater Runoff Quality
Ryan Road Park and RideCurrent Proposed Plan
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Urban Roadway Stormwater Runoff Quality
Ryan Road Park and RideCurrent Proposed Plan
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Urban Roadway Stormwater Runoff Quality
Ryan Road Park and RideCurrent Proposed Plan
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Urban Roadway Stormwater Runoff Quality
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Urban Roadway Stormwater Runoff Quality
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Urban Roadway Stormwater Runoff Quality
Ryan Road Park and RideBiofiltration with Native Vegetation
Live plants supplemented with WisDOT Seed Mix No. 75
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Urban Roadway Stormwater Runoff Quality
Ryan Road Park and RideCurrent Proposed Plan
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Urban Roadway Stormwater Runoff Quality
Ryan Road Park and RideCurrent Proposed Plan-
Porous Asphalt and PaveDrain Products
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Urban Roadway Stormwater Runoff Quality
Whats Next
TMDLs (Total Maximum Daily Loads)
Total Suspended Solids
Phosphorus
Bacteria
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Urban Roadway Stormwater Runoff Quality
Summary
Water quality goals can be achieved whileefficiently draining roadways and maintaining
safe driving conditions
All water quality BMPs mentioned complywith FAA Circular for stormwater treatment
near airports.
Maintenance is the key (both in terms ofissues and solutions!)
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Urban Roadway Stormwater Runoff Quality
Questions?
Thank you!
www.stormwater-solutions-engineering.com
moving to Water Council Building233 W. Pittsburgh St., Milwaukee
http://www.stormwater-solutions-engineering.com/http://www.stormwater-solutions-engineering.com/