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I-" ~ to "cr> ij could attract deer to thevlcinity of the canal. Reclamation has asked the Fish and Wildlife Setvice to make specific recommendations conceming deer escapes along the Stage One canal. Monijoring shows that deer continue to become trapped in the canal. The effectiveness of the metal escape bars installed last year has not been d9lennined. Big Sandy River Unit Reclamation met with the Stale of Wyoming in April to present ....ults of the studies Wyoming asked Reclamation to avaluale. Jim Bridger Power Plant option Preliminary findings of the contract study of saline water use in Jim Bridger Power Plant were reported. By using sid&-slreem softeners and disposal ponds, 5,000 gpm (about 8,000 BCre-feet per year) of Big Sandy River water could be used with lotaI in-plant costs of about $70 perton (or about $700,000 per mgIL reduction at Imperial Dam). When the costs of well collection featu.... and pipeline costs are included, the total cost-effectiveness estimates for using Big Sandy River flows in the powerplant ranged from $146 to $152 per ton. These costs are not compelijive with other salinity control , , For queslionsconceming projects discussed in this newsletter, please contact the Public Affairs Office in the Region responsible for that project. Bureau of Reclamation Upper Colorado Regional Office P.O. Box 11568 Salt Lake City, Utah 84147 Telephone: FTS 586-5403 .' units at this time. A final report on the Jim Bridger Power Plant study is available in limited Quantities from the Water Quality Office. EvaporalIon opllon8 Other options involving evaporetive disposal at the Red Desert site were also not cost~ive. Aside from these high costs of approximately $167 to $716 per ton, the State of Wyoming prefers the beneficial use of collected saline waters. IndUBtr1al comblnallonl Cost estimates for various combined industrial uses of the brine by Jim Bridger, Chevron, and Texas Gulf were prepared for comparison. One combination altemative that included deliveries of Big Sandy River water to those three industries yielded a cost- effectiveness of $103 per ton. The level of demand and schedule of delivery remains uncertain for all of the potential industrial users. scs study The SCS low pressure sprinkler option is still under study. According to SCS estimates, the costs of the low pressure sprinklers range from about $39 to $41 per ton. Commercial: 801-524--5403 Selsr.1Ive lining Although Reclamation found that total canal and lateral lining In the Eden Project al'88 is too expensive, a selective lining concept was recently reviewed. Based on conservative estimates, SCS technical assumptions, and a design concept for selective lining of unlined SIlClions of certain canals, the cost~iveness of this option ranged from $27 to $100 per ton depending on which canal systems were considered. The State has expressed interest in studying the selective lining option. Further studies Salective lining of canals in conjunction with implementation of low pressure sprinkler systems may provide a viable plan. Ongoing land consolidation in the irrigated area might enhance the opportunities for improvements to the waterdelivery/irrigation systems. Studies will continue on this option. Las Vegas Wash Unit The 3.5 mile Pittmann Bypass Pipeline is completed. Monitoring to detennine its effectiveness in reducing sail loading of the Las Vegas Wash was initialed June 20. The expected salt reduction is 7,oootonsperyear. you would like to see included in SALINITY UPDATE, write to: j Bureau of Reclamation Lower Colorado Regional Office P.O. Box 427 Boulder City, Nevada 89005 Telephone: Commercial: FTS 598-7420 702-293-8420 Editor, SALINITY UPDATE, D-l00J Colorado River Water Quality Office Bureau of Reclamation p.o. Box 25007 Denver Federal Center Denver, Colorado 80225 Telephone: Commercial: FTS 776-67~ 303-236-a782 For answers to general questions or items