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Workshop U.S. Nuclear Regulatory Commission Rockville, Maryland

Explore how withdrawn groundwater usage affects crop quality and population health in Maryland. Understand the conceptual models and chronic risks associated with agricultural activities. Learn about sensitivity and uncertainty in environmental parameters for clean-up efforts.

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Workshop U.S. Nuclear Regulatory Commission Rockville, Maryland

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  1. Problem 1: Building CSMs Workshop U.S. Nuclear Regulatory Commission Rockville, Maryland Pacific Northwest National Laboratory November 15-17, 2005

  2. Conceptual Site Model #1 2

  3. Conceptual Model #1: Step 1 Step 1: Withdrawn groundwater irrigates Ag1 to Pop1 N Pop1 Ag1 Agricultural Location Population Source 3

  4. CSM #1: Step 1 4

  5. Conceptual Model #1: Step 2 Step 1: Withdrawn groundwater irrigates Ag1 to Pop1 Step 2: Overland flow to river, which irrigates Ag1 to Pop1 N Pop1 Ag1 Agricultural Location Population Source 5

  6. CSM #1: Step 2 6

  7. Conceptual Model #1: Step 3 N • Step 1: Withdrawn groundwater • irrigates Ag1 to Pop1 • Step 2: Overland flow to • river, which irrigates Ag1 to Pop1 • Step 3: Air deposition to Ag2 to Pop1 Ag2 Pop1 Ag1 Agricultural Location Population Source 7

  8. CSM #1: Step 3 8

  9. Conceptual Model #1: Step 4 N • Step 1: Withdrawn groundwater • irrigates Ag1 to Pop1 • Step 2: Overland flow to river, which irrigates Ag1 to Pop1 • Step 3: Air deposition to Ag2 to Pop1 • Step 4: Air deposition to Ag2 to Pop1 and Pop2 Ag2 Pop1 Ag1 Pop2 Agricultural Location Population Source 9

  10. CSM #1: Step 4 10

  11. Conceptual Model #1: Step 5 N • Step 1: Withdrawn groundwater irrigates • Ag1 to Pop1 • Step 2: Overland flow to river, which irrigates Ag1 to Pop1 • Step 3: Air deposition to Ag2 to Pop1 • Step 4: Air deposition to Ag2 to Pop1 and Pop2 • Step 5: Chronic risks for Pop 2: • FG Report 11 dosimetry (ICRP 30) • FG Report 13 dosimetry (ICRP 60) Ag2 Pop1 Ag1 Pop2 Agricultural Location Source Population 11

  12. CSM #1: Step 5 12

  13. Conceptual Site Model #2 13

  14. Conceptual Model #2: Step 1 Step 1: Withdrawn groundwater irrigates Ag1 to Pop1 N Pop1 Ag1 Agricultural Location Population Source 14

  15. CSM #2: Step 1 15

  16. Conceptual Model #2: Step 2 N • Step 1: Withdrawn groundwater irrigates Ag1 to Pop1 • Step 2: Groundwater flow to river, which irrigates Ag1 to Pop1 Pop1 Ag1 Agricultural Location Population Source 16

  17. CSM#2: Step 2 17

  18. Conceptual Model #2: Step 3 N • Step 1: Withdrawn groundwater • irrigates Ag1 to Pop1 • Step 2: Overland flow to river, which irrigates Ag1 to Pop1 • Step 3: Air deposition to Ag1 to Pop1 Pop1 Ag1 Agricultural Location Population Source 18

  19. CSM #2: Step 3 19

  20. Conceptual Model #2: Step 4 N • Step 1: Withdrawn groundwater • irrigates Ag1 to Pop1 • Step 2: Overland flow to river, which irrigates Ag1 to Pop1 • Step 3: Air deposition to Ag2 to Pop1 • Step 4: Pop2 drinks river water Pop1 Ag1 Pop2 Agricultural Location Population Source 20

  21. CSM #2: Step 4 21

  22. Conceptual Site Model #3 Linking to the Sensitivity/Uncertainty Module SourceVadose ZoneAquiferCrops

  23. Sensitivity of Kd (input) on vadose zone flux (output) Conceptual Model #3: Problem 1 23

  24. CSM #3: Problem 1 24

  25. Uncertainty of vadose zone parameters (input) on aquifer concentrations (output) Conceptual Model #3: Problem 2 25

  26. CSM #3: Problem 2 26

  27. Conceptual Model #3: Problem 3 Target clean-up values for concentrations at the source (input), based on concentrations in the aquifer (output) 27

  28. CSM #3: Problem 3 28

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