1. Pumping Optimization Model for Pump and Treat Systems -15091 Steve Baker: Umtanum Enterprises Flow and Transport by SSPA Data and Analysis by CHPRC

2. Background The Hanford Site is near the Columbia River in Washington State Nuclear Reactors were Operated to Produce Plutonium for Weapons Reactors Located Near the River for Cooling Water Access Operations Resulted in Significant Groundwater Contamination Pump and Treat Selected for Remediation Hexavalent Chrome Contamination a Major Concern

3. Pump and Treat Well Locations and Rates

4. Pumping Optimization Model: Scope This Presentation Deals With Analysis and Display Two Other Presentations Deal With Data and Design 15316: Development of a Groundwater Transport Simulation Tool for Remedial Process Optimization – Session 122 15315: Innovative Use of Cr(VI) Plume Depictions and Pump-and-Treat Capture Analysis to Estimate Risks of Contaminant Discharge to Surface Water at Hanford Reactor Areas – Session 135

5. Pump and Treat System Design 3D Groundwater Flow &Transport Model Created to Support Design Many Simulations Required to Optimize Design 2D Equivalent-Property Model Derived From 3D Model 2D Model Linked to User Interface to Simplify Operation Combined System Called the “Pumping Optimization Model (POM)” Short POM Run Times Support Optimization

6. Pumping Optimization Functionality Two Major Components Graphical User Interface Flow and Transport System MODFLOW MT3D Support Utilities

7. Optimization Flow Chart

8. User Interface Software Design Single.NET Windows Presentation Foundation Application Dynamic Grid to Display Simulations Side-by-Side Object Oriented Controls and Display Items (Wells, Plumes, Contours) Speed, Hardware Capacity Tradeoffs

9. Flow and Transport Calculations MODFLOW-MT3 executables, input files and utilities organized into a directory structure supporting the user interface

10. Base Case: 02-01-2014

11. Base Case: 02-01-2024

12. Base Case: 02-01-2034

13. Two New Wells, 100gpm: 02-2014

14. Two New Wells, 100gpm: 02-2024

16. Five Cases: 02-2024

18. Five Cases: 02-2034

19. Conclusions System Organized to be Applicable to any Pump and Treat Site Site-Specific Model Required All Other Components Generic