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<br />m- <br />.-l <br />C'J <br />C'J <br />o <br />,.... <br />'-' <br /> <br />'. <br /> <br />Figures 16-18. Cross sections showing: <br /> <br />16, Distribution of dissolved solids and ground-warer flow afrer 25-year <br />simulation for hypothetical aquifer 360 feet thick . . , . . . . . , . , . . . . . . . . 40 <br /> <br />17. Distribution of dissolved solids after 5-, 25-, and 50-year simulations <br />and ground-warer flow pattern after 25-year simulation ...,."..,.." 42 <br /> <br />18. Finite-element grid used for model that incorporares evapotranspiration <br />and Las Vegas Wash to simulate distribution of dissolved solids, and <br />.;",. <br />ground-water flow ..................,...........,......... 43 <br /> <br />19. Graphs showing relation between estimated inflow and total simulated seasonal <br />outflow by evapotranspiration. . . . . . . . . . . . . , . . . . , , . . . . . . . . , , , . . . . , . . 45 <br /> <br />20. Cross-sectional distribution of dissolved solids and ground-water flow after <br />IO-year simulation without hypothetical slurry wall. . . . . . . . . . . . . . . . . . . . . . . 46 <br /> <br />21. Cross-sectional distribution of dissolved solids and ground-water flow after <br />lO-year simulation with hypothetical sluny wall . . . . . . . . . . . . . . , . . . . . . . . . . 48 <br /> <br />TABLES <br /> <br />Table I. Particle-size data for sediment cores from cluster-well sites ........,.....,... II <br /> <br />2. Estimated horizontal and vertical hydraulic conductivities at cluster <br />well sites. from slug-test data. . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 <br /> <br />3. Estimated horizontal and vertical hydraulic conductivities, hydri!ulic gradient, and <br />ground-water flow rate for entire aquifer thickness of unit' width at each <br /> <br />cluster,well site .............................................,. 14 <br /> <br />4. Effects of varying aquifer properties and boundary conditions on ground-water <br /> <br />quality . . . . . . . . . . . . . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . , . . 37 <br /> <br />5. Comparison of measured and simulated dissolved-solids concentrations for selected <br />depth intervals at cluster-well sites .................................. 47 <br /> <br />v <br />