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<br />C!') <br /> <br />CD <br />t,_ <br />~ <br />..~ <br />c -' <br />c..:J <br />c,:. <br /> <br />B. <br /> <br />Specifics of the Glenwood Springs Saline Water Challenge <br /> <br />i <br />~ <br />yields in fa~m regions ir~igated by the Colo~ado River. The . ~ <br />Department of the Interio~, through its Bureau of Reclamation, .~ <br />is charged with the responsibility of finding cost-effective ~~ <br />processes able to remove and dispose of this salt load. ~~} ~ <br /> <br />Simila~ly, the State of Colorado wishes to decrease salt 7 <br />concentrations within the Colorado River due to the decline in! <br />its value as an ir~igation water resou~ce~ However, the Stat~ <br />1s also bound by water entitlements and its Constitution to <br />ensu~e that its ~ive~ wate~ app~op~iations are put to beneficial <br />use. Previous proposals to provide both beneficial uses and <br />salt removal have not p~oved cost-effective. <br /> <br />Glenwood <br />percentage <br /> <br />Springs collectively contributes a significant <br />of the salt loadings adversely impacting agricultural <br /> <br />C . <br /> <br />Physical and <br />Springs Region <br /> <br />Che.ical Characteristics of the Glenwood <br /> <br />1. Water Quality and Quantity <br /> <br />Eisenhaurer (1983) identifies the Glenwood Sp~ings as located in <br />the Leadville limestone strata, yeilding a combined flow of 296 <br />lite~/sec (about 4,700 gallons per minute). The majo~ity flow <br />of the 14 identified springs have a temperature near 51 oC, a <br />pH near 6.6, and a weighted average Total Dissolved Solids (TDS) <br />content near 18.780 g/liter. URS (1981) estimated that <br />identified sp~ings account for only 50 percent of the total salt <br />loading. Thus, by their estimate, <br /> <br />296 l/sec * i8.78 ~/I * 31,536,000 sec/yr * 2 = 386,134 tons <br />454 glIb * 2000 lb/ton <br /> <br />of salt a~e contributed to the Colorado Rive~ from this point <br />source annually. <br /> <br />The flow weighted average composition of Glenwood Springs water <br />is given in Table I. These values do not include t~ace anions, <br />such as fluoride. lithium. strontium, and aluminum, that may be <br />p~esent at concent~ations greate~ than 0.1 mg/l. <br /> <br />2. Climatological Data <br /> <br />a. Wind Summary: <br /> <br />According to data provided by the USBR, wind velocities recorded <br />at G~and Junction Walke~ field (elevation 4825 feet) over the <br />period January 1960 through December 1964, averaged <br />app~oximately 6 mph du~ing winte~ and 10 mph du~ing spring and <br />early summer. It is infrequent that windspeeds exceed 25 mph, <br />although speeds up to 66 mph have been ~ecorded (Ruffne~ and <br />Bair, 1977). When this does occu~, usually during spring and <br /> <br />4. <br />