Water Quality BMPs    Near Airports       Sam Jacoby, P.E.Stormwater Solutions Engineering                      Meeting St...
Contents• Corridor Overview• Need For Water Quality• Design Examples  – BMP Analysis  – Vegetation Choices                ...
Milwaukee County Corridor Highlights• Project Corridor in  Milwaukee County  – County Line  – To North of Mitchell    Inte...
Trans 401 Requirements• Trans 401.106 Post-construction performance  standard  – (3) Total Suspended Solids     • (b) Reco...
Current FinalDesign Projects• Airport Spur• South Milwaukee  County Mainline• Rawson• Ryan Road  Interchange              ...
Ryan RoadDry Detention      Interchange                              Bioswale                          Porous Pavement    ...
Airport Spur Project• The Bad                  • The Good  – Limited R/W                – Wide Ditch System  – Steep emban...
Airport Spur Project• Biofiltration Devices:                                        Biofiltration Device   – #1 near railr...
Right of  Way          Biofiltration                Device #1                     Emergency                      Spillway ...
Airport Spur ProjectBiofiltration Device #1                    Biofiltration Device                        #1 Location    ...
Airport Spur ProjectBiofiltration Device #1                           Biofiltration Device                               #...
Airport Spur Project     Biofiltration Device Summary• 60% combined TSS reduction from three Spur  Biofiltration devices• ...
Airport Spur Project                    Vegetation• Wildflowers such as   Black Eyed    Boneset     Golden         Blue Fl...
Airport Spur Project                   Vegetation• Grasses, Sedges & Rushes such as   Fox Sedge   Big Bluestem            ...
Summary• Water Quality Goals Can Be Achieved• Drain down of Standing Water Limits the  Attractiveness of Biofiltration dev...
Questions?         Meeting Stormwater Runoff Quality               Requirements Near Airports
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Water Quality BMPs Near Airports

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Water Quality BMPs Near Airports - Sam Jacoby, SSE

Nov 2010

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Water Quality BMPs Near Airports

  1. 1. Water Quality BMPs Near Airports Sam Jacoby, P.E.Stormwater Solutions Engineering Meeting Stormwater Runoff Quality Requirements Near Airports
  2. 2. Contents• Corridor Overview• Need For Water Quality• Design Examples – BMP Analysis – Vegetation Choices Meeting Stormwater Runoff Quality Requirements Near Airports
  3. 3. Milwaukee County Corridor Highlights• Project Corridor in Milwaukee County – County Line – To North of Mitchell Interchange – BMPs Within Airport Concern Area • 6 Dry Detention Basins • 5 Biofiltration Devices • Porous Asphalt Parking Lot • 2 Stream Relocation • Floodplain Reconnection Meeting Stormwater Runoff Quality Requirements Near Airports
  4. 4. Trans 401 Requirements• Trans 401.106 Post-construction performance standard – (3) Total Suspended Solids • (b) Reconstruction – 40% TSS Reduction – Corridor-Wide 40% Requirement • (State Line to Mitchell) Meeting Stormwater Runoff Quality Requirements Near Airports
  5. 5. Current FinalDesign Projects• Airport Spur• South Milwaukee County Mainline• Rawson• Ryan Road Interchange Meeting Stormwater Runoff Quality Requirements Near Airports
  6. 6. Ryan RoadDry Detention Interchange Bioswale Porous Pavement Biofiltration Dry Detention Stream Relocation FloodplainReconnection Meeting Stormwater Runoff Quality Requirements Near Airports
  7. 7. Airport Spur Project• The Bad • The Good – Limited R/W – Wide Ditch System – Steep embankments • The Solution • 2.5:1, in excess of 10’ – 3 Biofiltration Devices vertical Meeting Stormwater Runoff Quality Requirements Near Airports
  8. 8. Airport Spur Project• Biofiltration Devices: Biofiltration Device – #1 near railroad Locations intersection – #2 at intersection of 6th and Grange – #3 within spur median near Howell Meeting Stormwater Runoff Quality Requirements Near Airports
  9. 9. Right of Way Biofiltration Device #1 Emergency Spillway Outlet Structure 600-ft of Roadway and ROW 1-ft Ponding Depth Underdrain & Storage Layer Meeting Stormwater Runoff Quality Requirements Near Airports
  10. 10. Airport Spur ProjectBiofiltration Device #1 Biofiltration Device #1 Location Biofiltration Device #1 Location Meeting Stormwater Runoff Quality Requirements Near Airports
  11. 11. Airport Spur ProjectBiofiltration Device #1 Biofiltration Device #1 Location Meeting Stormwater Runoff Quality Requirements Near Airports
  12. 12. Airport Spur Project Biofiltration Device Summary• 60% combined TSS reduction from three Spur Biofiltration devices• Less than 24-Hour Drain Time Meeting Stormwater Runoff Quality Requirements Near Airports
  13. 13. Airport Spur Project Vegetation• Wildflowers such as Black Eyed Boneset Golden Blue Flag Iris New England Susan Alexsander Aster Live plants supplemented with WisDOT Seed Mix No. 75 Meeting Stormwater Runoff Quality Requirements Near Airports
  14. 14. Airport Spur Project Vegetation• Grasses, Sedges & Rushes such as Fox Sedge Big Bluestem Blue Fescue Dark Green Porcupine Bulrush Sedge http://www.co.washburn.wi.us/departments/landwatercons/info/planting/grasses/identification.htm Meeting Stormwater Runoff Quality Requirements Near Airports
  15. 15. Summary• Water Quality Goals Can Be Achieved• Drain down of Standing Water Limits the Attractiveness of Biofiltration devices for Migratory Birds Meeting Stormwater Runoff Quality Requirements Near Airports
  16. 16. Questions? Meeting Stormwater Runoff Quality Requirements Near Airports

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