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US Army Corps of Engineers Philadelphia District

Groundwater Modeling. US Army Corps of Engineers Philadelphia District. Problem Identification. US Army Corps of Engineers Philadelphia District. Ft Dix Groundwater Study. AOC with Water Wells. Lakehurst NAES. Lang Superfund Site. Data Collection and Processing. US Army Corps

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US Army Corps of Engineers Philadelphia District

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  1. Groundwater Modeling US Army Corps of Engineers Philadelphia District

  2. Problem Identification US Army Corps of Engineers Philadelphia District Ft Dix Groundwater Study AOC with Water Wells Lakehurst NAES Lang Superfund Site

  3. Data Collection and Processing US Army Corps of Engineers Philadelphia District

  4. Data Needs US Army Corps of Engineers Philadelphia District • Pumping Information • Irrigation information • Steady State or Transient • Contaminates • Water Chemistry • Density Flow • Salinity • NAPL • Topographic • Surface Water Elevations • Geologic • Hydrogeologic • Conductivities • Groundwater Total Heads • Climate • Rainfall • Evapotranspiration • Recharge

  5. Data Visualization – Plume Plots US Army Corps of Engineers Philadelphia District Vertical Horizontal

  6. Data Visualization – 3-D Site-wide US Army Corps of Engineers Philadelphia District Extraction Well Injection Well Trash Slurry Wall

  7. Data Visualization – Plume Plots US Army Corps of Engineers Philadelphia District Coal Mine Legend Concentration (ppb) 10000 7500 5000 2500 100 • Tranguch Gasoline Site • Groundwater Study • May 1998 • Benzene Concentrations • > 100 ppb • Spring 1995 • US Army Corps of Engineers, • Philadelphia District Well Location

  8. Borehole Materials Layer 1 - undifferentiated Layer 2 - peat, clay, silt Layer 3A - limestone 3-D Geologic Conceptualization US Army Corps of Engineers Philadelphia District GMS Boreholes

  9. 3-D Geologic Conceptualization A’ A Surface Layer (2 vertical elements) Middle Layer (2 vertical elements) Palm Beach/Biscayne Aquifer Bottom Layer (2 vertical elements) Tamiami/Gray Limestone/Ochopee A’ A US Army Corps of Engineers Philadelphia District • The conceptual geology model was developed in 2005 by Jacksonville District based on Jacksonville District’s South Florida Digital Elevation Model Report

  10. 3-D Conceptual Models Legend Slurry Wall Location Surface of Bad Trash Water Table Surface US Army Corps of Engineers Philadelphia District Location of Unsaturated Trash • Lipari Superfund Site • Groundwater Study • 2008 • US Army Corps of Engineers, • Philadelphia District

  11. Flow Models – Water Supply US Army Corps of Engineers Philadelphia District Production Pumping Potomac C Total Head N NJ MD DE Pot C production pumps Flow Flow Delaware River 5 miles Chesapeake Bay U.S. Army Corps of Engineers Philadelphia District New Castle County DE Groundwater Study Production Pumping Potomac C Total Head Contour Interval = 10 ft

  12. Flow Models – Wetlands Permits US Army Corps of Engineers Philadelphia District Swamp Creek Copper Mine

  13. Flow Models – Design Analysis Borehole Materials Layer 1 - undifferentiated Layer 2 - peat, clay, silt Layer 3A - limestone US Army Corps of Engineers Philadelphia District Herbert Hoover Dike Regional Groundwater Flow Model Lake Okeechobee Flow Flow Flow GMS Boreholes Flow Flow Proposed cut-of wall tip elevation (based on 02 MAR 2007 design)

  14. Flow Models – Capture Zone Analysis US Army Corps of Engineers Philadelphia District Vineland Chemical Superfund Site Proposed New Recovery Wells

  15. Flow Models – Surface/Subsurface Interaction US Army Corps of Engineers Philadelphia District Everglades • Too much/too little water for the Everglades/south Florida ecosystem • Fragmentation of natural areas • Degradation of water quality • Population growth and increased demand • Average of 1.7 billion gallons of water a day lost to tide

  16. Contaminant Transport Modeling - Superfund A A’ US Army Corps of Engineers Philadelphia District SJCC/GSC Superfund Site (NAP) A A A’ Upper Sand 1 Upper Sand 2 Banded Sand Lower Clay Lower Sand A’ Transport Run Resulting Plume – Cross Sectional View July 1993 Flow Field, SJCC/GSC Superfund Site

  17. Dam Safety Analysis US Army Corps of Engineers Philadelphia District

  18. Dam Safety Analysis US Army Corps of Engineers Philadelphia District Design Flood STA 10+25 High Tailwater Conductivity Values – Set A

  19. Services for A/E Contracts US Army Corps of Engineers Philadelphia District • SOW - Write or Review • Prepare Gov. Estimates and Schedules • ITR Contractor Products

  20. Ft Drum Case Study US Army Corps of Engineers Philadelphia District • Collect Available Data • Construct Conceptual Model • Identify Data Gaps • Draft Data Collection SOW

  21. Modeling on the Cutting Edge of Technology US Army Corps of Engineers Philadelphia District ADH

  22. Internal Technical Reviews (ITR) US Army Corps of Engineers Philadelphia District Kootenia River ITR for NWS

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