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<br />r,-- <br />~ <br />~ <br />I <br /> <br />, <br /> <br />~ <br />I' <br /> <br />~... <br /> <br /> <br />~.\. <br /> <br />CONSTRUCTION UTILITIES <br /> <br />129 <br /> <br />1;:S7 <br /> <br />TABLE 10 <br /> <br />CALENDAR <br />YEAR <br /> <br />CON- <br />STRUCTION <br />COST <br /> <br />CONSTRUCTION WATER SYSTEM <br />COSb to June 30, 1938 <br /> <br />OPERATION WATER SALES. <br />AND :>.tAINT[. CUBIC FEET <br />NANCE COST <br />$ 27,008.25 <br />48.087.20 <br />03,416.77 <br />84.695.05 <br />68.242.04 <br /> <br />$064.505.02 <br />855.340.29 <br />872.218.10 <br />850.678.58 <br />819.714.67 <br /> <br />CREDITS <br /> <br />ACClIMUL...TED <br />NET COST <br /> <br />... ...$646.263.93 <br />... 176.782.15 <br />28.320.06 <br />12.242.93 <br /> <br />5.8~5.933 <br />22.566.708 <br />39.415.784 <br />59.797.801 <br />49.733,073 <br /> <br />S 8.766.86 <br />34.034.44 <br />74.859.02 <br />1I8,4 77.50 <br />99.205.95 <br /> <br />1933 <br />1934 <br />1935 <br />1936 .. <br />1937 .. ..... <br />To June 30, <br />1938 ........ 20,477.74 9,254.147 22.487.08 817.705.33 <br />T01'l....S863.009.07 $311,927.1I 180.613.446 S357.830.85 $817.705.33 <br />Water sales quantities are from the wa.ter delivery records of the hydrographic <br />division. Re\'enue and operation and maintenance COSls from cost division. <br /> <br />in order more amply to care for later periods of active demand, <br />which might otherwise have temporarily overtaxed the part of the <br />system involved. Water used for testing was reused when possible <br />for further testing. In addition to the metered supply a small <br />quantity of water has been used by the maintenance crew for flush- <br />ing pipe lines and tanks. <br />The average monthly delivery from the beginning of operation <br />of the system up to June 30, 1938, has been 3,034,300 cubic feet, or <br />22,697,000 gallons. The maximum monthly delivery of 6,234,800 <br />cubic feet, or 46,636,000 gallons, occurred in July 1936. The aver- <br />age monthly delivery during 1936, the maximum year, was 4,983,- <br />150 cubic feet, or 37,274,000 gallons. <br />Each consumer is billed for water metered into his line at the <br />rate stated in his specifications. For tunnel construction the charge <br />was 15 cents per 100 cubic feet, and for canal, conduit, siphon, and <br />other construction 30 cents. The District supplies to the contractors <br />without charge all water used for testing purposes. The average <br />revenue per 100 cubic feet of water sales to June 30, 1938 is $0.191. <br /> <br />Trentment of water <br />The water as delivered has carried from 345 to 1,095 parts per <br />million of dissolved solids and from 17 to 472 parts per million of <br />hardness, except the standby wells at Earp and Eureka Wash, which <br />carry somewhat greater amounts. When the wells were developed <br />chemical analyses of the water indicated a satisfactory quality for <br />all purposes without necessity of softening or other treatment. <br />However, after three months of use "red water" became a consid- <br />erable problem. This trouble eventually appeared in all parts of <br />