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Impact of Levee Cutoff Walls on Groundwater Recharge Presented By: Paul Sorci, PE
 
 
Outline ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Sacramento River Location Sacramento River Farmlands Downtown Sacramento Groundwater Analyzed
Overview of Cutoff Walls ,[object Object],[object Object],[object Object]
Overview of Cutoff Walls ,[object Object],Cutoff Wall Permeable  Sands Fine Grained  Soils Fine Grained  Soils
Overview of Cutoff Walls ,[object Object]
Overview of Cutoff Walls ,[object Object],[object Object],[object Object]
Cutoff Wall Construction ,[object Object],Permeable Sands Low Permeable Clay/Silt  Levee/Blanket Layer Ground Surface 5’ Min. 6’ Wide Element 2’ Overlap
Cutoff Wall Construction ,[object Object],Previously Mixed  Element Next Element  Alignment Next Element
Cutoff Wall Construction ,[object Object],Slurry Injection at  Auger Tips
Cutoff Wall Construction ,[object Object],Permeable Sands Low Permeable Clay/Silt  Levee/Blanket Layer Ground Surface
Cutoff Wall Construction ,[object Object],Spoils Used for  Mixing Consisting  Mostly of Clay Excavated  Trench Bentonite Slurry
Cutoff Wall Construction ,[object Object],Mixing  Excavator Bentonite  Slurry Mix of Soil,  Cement,  and Bentonite
Cutoff Wall Construction ,[object Object],Trench  Backfill Trench  Mix
Cutoff Wall Construction ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Groundwater Affects ,[object Object],[object Object],[object Object],[object Object],[object Object]
Groundwater Affects ,[object Object],[object Object],[object Object],[object Object],[object Object]
Groundwater Affects ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Groundwater Affects ,[object Object],[object Object],[object Object],[object Object]
Groundwater Affects ,[object Object],[object Object],[object Object]
Station 70+00 85% Reduction Station 353+00 40% Reduction Cutoff Wall Tip in Fine Grained  Soils Cutoff Wall Tip in Coarse Grained Soils
Groundwater Affects ,[object Object],[object Object],[object Object],Rainy Season – Groundwater Recharge
Groundwater Affects  ,[object Object],[object Object],[object Object],[object Object],[object Object]
Groundwater Affects ,[object Object],[object Object],Difference in Groundwater Recharge Rainy Season
Groundwater Affects ,[object Object],[object Object],[object Object],[object Object],[object Object]
Groundwater Affects ,[object Object],[object Object],[object Object],[object Object]
Summary ,[object Object],[object Object],[object Object]
Summary ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Questions ?

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Sorci Sess7 101309

  • 1. Impact of Levee Cutoff Walls on Groundwater Recharge Presented By: Paul Sorci, PE
  • 2.  
  • 3.  
  • 4.
  • 5. Sacramento River Location Sacramento River Farmlands Downtown Sacramento Groundwater Analyzed
  • 6.
  • 7.
  • 8.
  • 9.
  • 10.
  • 11.
  • 12.
  • 13.
  • 14.
  • 15.
  • 16.
  • 17.
  • 18.
  • 19.
  • 20.
  • 21.
  • 22.
  • 23. Station 70+00 85% Reduction Station 353+00 40% Reduction Cutoff Wall Tip in Fine Grained Soils Cutoff Wall Tip in Coarse Grained Soils
  • 24.
  • 25.
  • 26.
  • 27.
  • 28.
  • 29.
  • 30.