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<br />Using the information from Stage 3 Pump Test Wells, we have completed our well <br />spacing for Stage 3. This stage will require about 43 wells and will produce <br />between 30,000 to 36,000 acre-feet of ground water per year. <br /> <br />The area in Stage 3, east of San Luis Creek drain shows water quality comparable <br />to Stage 1-2, while the water from,the area west of the drain has a higher average <br />total dissolved solids and sodium ion concentration. ' <br /> <br />Our salvage well water quality mixing <br />when blending Stages 1-2 and 3 water. <br />2 for the mixing results. <br /> <br />model shows no problem with water quality <br />Please refer to water quality sheets 1 and <br /> <br />We have established a control system of observation wells in Stages I-2and 3 which <br />will provide positive identification of any fluctuations in the water tables, as <br />required by Public Law 92-514, Sec. 102(a). <br /> <br />Short term and long term pump tests show no reduction in existing artesian flows. <br />Section 103 of Public Law 92-514 establishes an operating committee to assure <br />compliance with this and other potential specified adverse effects of the project. <br />Because this project has highly flexible operational methods (including pumping <br />rates), the operational constraints prescribed by Public Law 92-514 will be met. <br /> <br />Please refer to tables 1 and 2 for individual well performance in Stages 1,.2 and <br />3 respectively. <br /> <br />We are providing the following stage construction comparisons to assist you in <br />making your decision. <br /> <br />DESCRIPTION <br /> <br />CONSTRUCT <br />STAGE 1-2 <br /> <br />CONSTRUCT <br />STAGE 1-2 and 3 <br /> <br />Estimated ground water <br />yield (acre-feet/yr. Nov. 1979) <br /> <br />13,000 to 23,000 <br /> <br />35,000 to 53,000 <br /> <br />Estimated ground water <br />yield (acre-feet/yr. Sept. 1982) <br /> <br />14,000 to 16,000 <br /> <br />46,500 to 51,000 <br /> <br />Number of production wells <br />Nov. 1979 <br />Sept. 1982 <br /> <br />30 to 55 <br />58 <br /> <br />55 to 95 <br />101 <br /> <br />Remaining annual project <br />yield objective (acre-feet/yr.) <br />Sept. 1982 <br /> <br />86,600 to 84,600 <br /> <br />54,100 to 49,600 <br /> <br />Benefit - Cost ratio <br />Jan. 1979 prices <br /> <br />0.74 <br /> <br />0.99 <br /> <br />-~ -708 <br />0uv ~' <br /> <br />-2- <br />