Decision Analysis Model for Well Rehabilitation and Groundwater Development, Moses Lake, Washington

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by R. H. Anderson, Golder Associates Inc, Northeast Redmond, United States,
W. J. Roberds, Golder Associates Inc, Northeast Redmond, United States,
D. Banton, Golder Associates Inc, Northeast Redmond, United States,

Document Type: Proceeding Paper

Part of: Water Resources Planning and Management: Saving a Threatened Resource—In Search of Solutions

Abstract: A decision analysis model has been developed for evaluating various well rehabilitation strategies and long-term groundwater development alternatives, as well as various investigation programs, for a water system presently impacted by groundwater contamination. The model determines the most cost-effective alternatives for investigating and then maintaining and developing adequate well yields and water quality. The model appropriately considers the uncertainties in the following: the hydrogeologic/contamination scenarios and associated parameters; the existing well parameters; and the costs (capital and operating) and results (information regarding scenarios and changes in well parameters) associated with alternative investigation programs and rehabilitation/development programs. The model was applied to an actual case, in which it successfully discriminated among five investigation programs and nine rehabilitation/development programs.

Subject Headings: Hydrologic models | Wells (water) | Rehabilitation | Groundwater pollution | Model analysis | Lakes | Water quality | Parameters (statistics) | Mathematical models | Washington | North America | United States

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