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71. Because the cost of providing an additional intake is large, compared to the cost of making an intake ample t© meet the ultimate requirements, it is considered advisable to construct the intake structure and pipe line to provide sufficient capacity to supply the estimated water require­ments of this Intake in the year 2000 but to limit the pump­ing equipment to that required for conditions to be expected around the year 1970. For a flow of 60.0 MOD, at present construction costs and power costs, a 54-inch pipe line proves most economical. Selection of 60.0 MOD for the ultimate requirement of this Intake stems from the following consideration: The total requirements of water from all sources during the maximum month of the year 2000 is estimated at 233.4 MOD, of which 69.0 MOD of Lake Mead water are required for "Other Agricultural Lands". The balance of 164.4 MG-D re­presents all other potable and "used" water requirements of the District. The maximum sustained capacity of (l) the artesian basin is 47.2 MOD (2) the BMI facilities is 31.2 MOD and (3) "used water" available for other agricultural lands is 26.2 MOD, making a total of 104.6 MOD available. The balance of 59.8 MOD or approximately 60.0 MOD is then the ultimate requirement of Lake Mead water exclusive of "Other Agricultural Lands". If the demand from "other agricultural lands" materializes, the means of supplying