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upr000156 128

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upr000156-128
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    69. It is believed that this elevation should be used, so that, if it later becomes desirable to treat the -water, the existing treatment facilities could be utilized. Since the elevation of Las Vegas is about 2,000, it is obvious that no supply from BMI can be secured without additional pumping. For a maximum rate of delivery of 8 MOD, a 24-lnch line along U.3. Highway 93 - 95 - 466 with a booster pumping station at about Elevation 1,870 proves the most economical on an annual basis. The hydraulic condi­tions are shown on Figure 18. Bases of design are given in Table 12. It is desirable to arrange the pumping facilities so that water may be returned to BMI. This arrangement can easily be provided and has been included in the estimate of cost. Table 13 shows that the total cost of this work is estimated at $1,592,000. 9.3 Intakes on Lake Mead - Although intakes on Lake Mead are part of the largex^jrojeot for supplying water directly to the Water District, they are considered separ­ately. Information from the D.S. Department of the Interior Indicates that the elevation of Lake Mead during the period of 1941-1949 has varied from a high of 1,220 to a low of 1,134, a difference of 86 feet. Future elevations are