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Mr. Campbell J A M E S M. M O N T G O M E R Y • C O N S U L T I N G E N G I N E E R • 18 N O R T H O A K L A N D A V E N U E • P A S A D E N A I. C A L I F O R N I A The location of proposed Well No. 12 in close proximity to existing Well No. 11 (520') will result in an additional pumping lift of about 6 feet for Well No. 11. Since this well is now equipped with a horizontal centri­fugal pump that has a very flat head-capacity curve, this additional head of 6 feet will greatly reduce its capacity. To maintain adequate flow this pump will have to be replaced with a deep-well turbine-type pump with a steeper characteristic curve, and with bowls set at such a depth that a good flow will be assured. A deep-well pump with a capacity of 1800 gpm anH a bowl setting of 130 feet will cost approximately $5, 000 installed. It is believed that this expenditure is justified, howevef, in that during the slimmer months the existing pump is probably operating at a low point on its curve and is not producing what it should. In determining these locations for wells, we studied various loca­tions and also considered the possibility of adapting existing private wells - and connecting these to the system. Investigation showed, however, that 1 no wells of adequate capacity and reasonable cost were available and that j/j the best locations for additional wells were in the vicinity of the existing , Land and Water Company's wells. A good location for an additional well would be just south of Charleston Boulevard in line with the rest of the Land and Water Company's wells. In considering such a location, how­ever, weight was given to such items as the highpr^cs cf ted acq'risition, Las Vegas Valley Water Dist. -2- 4-13-54 Item Approximate Cost 1. Wells 16" diameter 1200 feet deep - 2 @ $23, 500 $47,000 2. Test Pumping (48 hours - ea. well) 2 @ $1, 200 2, 400 3. Pumps (Installed) (Deep well turbine type 2500 gpm capacity) 2 @ $8, 000 16,000 4. Connecting Pipe Lines Well No. 12 - 500 l.f. of 14" Transite a Well No. 13 - 1060 l.f. of 14" Transite . 5. Engineering Contingencies (10%) Subtotal $75,966 7, 600 $83, 560