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<br />. <br /> <br />etc.!. Some people have suggested nothing <br />can be done, while others believe better water <br />management is the key. The NIWQP believes <br />it makes sense to start thinking about <br />solutions. Planning will begin later this year to <br />identify sensible solutions in conjunction with <br />stakeholder groups like the Gunnison River <br />Basin Selenium Task Force. Plans are to hold <br />public workshops in Delta or Montrose. <br /> <br />Selenium Task Force <br />The Selenium Task Force was convened by <br />the Colorado Water Quality Control Division in <br />early 1998. Its purpose is to find solutions <br />and funding to address four Gunnison River <br />basin stream segments that don't comply with <br />the State's 5 ppb selenium standard for <br />water. These segments include the lower <br />Gunnison River below Delta, the Uncompahgre <br />River below Montrose, Sweitzer lake and <br />some tributaries of the North Fork of the <br />Gunnison. This stakeholder group is moving <br />forward to better define selenium sources, <br />educate and inform the public, and identify <br />solutions. Due to similar objectives, activities <br />of the Task Force and the NIWQP are being <br />closely coordinated. <br /> <br />Demonstration Project <br />Do salinity control measures such as the <br />piping of irrigation laterals result in significant <br />reductions in selenium loading to streams and <br />rivers? That's the question the NIWQP and <br />. - <br />Uncpmpahgre Valley Water Users Asso~iat!9n <br />(UVWUAl want to answer by cost sharing a <br />demonstration project with the Colorado River <br />.- <br />Salinity Control Program. Imorovements will <br />be made to .Uncompahgre Project irrigation <br />facilities in an area located immediately <br />southeast of Montrose. The project plan calls <br />for the UVWUA to replace five existing <br />unlined irrigation laterals (ditches) with 7.5 <br />miles of buried PVC pipe. Extensive <br />monitoring of project performance will be <br />conducted by the NIWQP to judge its <br />effectiveness. In addition to selenium <br />reductions, the project will prevent an <br />estimated 2,300 tons of salt from entering the <br />Colorado River each year. Construction is <br />scheduled for completion in April 1999. <br /> <br />. <br /> <br />Remediation at Stewart Lake <br />One example of selenium remediation <br />occurring in our region is at Stewart lake, <br />located adjacent to the Green River near <br />Vernal, Utah. The lake area is an attractive <br />marsh for migratory birds, and endangered <br />Colorado sQuawfish and razorback suckers <br />have also been captured there. However, the <br />water, food, biota, and sediment in the lake <br />have selenium concentrations that are toxic to <br />fish and wildlife. The lake is adjacent to one <br />of only two known river reaches where <br />successful reproduction of razorback suckers <br />occurs in the upper Colorado River basin. <br /> <br />Remediation actions, funded by the NlWQP, <br />are proceeding in steps and include monitoring <br />to evaluate effectiveness before proceeding <br />with further work. Phase one was completed <br />in June 1998 and included 1) excavating a <br />new inlet channel to flush the lake with clean <br />water; 21 excavating channels to drain and dry <br />the lake thus enhancing selenium oxidation <br />and removal from sediments; 3) extending <br />agricultural drains to discharge directly into <br />the Green River, eliminating the main source <br />of selenium to the lake; and 4) monitoring to <br />evaluate the effectiveness of activities. <br /> <br />1 <br /> <br /> <br />.., <br /> <br />Hvdraulic <br />Excavator <br />creating a <br />drainage <br />channel at <br />Stewan Lake <br /> <br />- <br /> <br />Phase two activities will continue over 2 to 3 <br />years and involve more flushing, evaluating <br />other methods to reduce selenium in the <br />sediments, providing a permanent good Quality <br />water supply, encouraging water <br />conservation, and monitoring. Significant <br />progress has been made toward N1WQP <br />remediation goals at Stewart lake. <br /> <br />Input and questions are welcome <br />Please contact Mike Baker at the Bureau of <br />Reclamation, 2764 Compass Drive, Suite 106, <br />Grand Junction CO 81506 by Phone: (9701 <br />248.0637. Fax 19701 248,0601. or <br />E-mail: mbaker@uc.usbr.gov. <br /> <br />. <br />