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<br /> <br />compliance delivery to the Rio Grande, On June 16th, water quality was again within <br />Compact requirements and delivery to the river was resumed, <br /> <br />Deliveries to the Blanca Wildlife Habitat Area included the annual mitigation delivery <br />of 800 AF, a Colorado Division of Wildlife transmountain exchange delivery of 1000 <br />AF, and 60 AF pumped from San Luis Lake during the search for a drowning victim. <br /> <br />Deliveries to the Alamosa Wildlife Refuge included the annual mitigation delivery of <br />3,108 AF and 281 AF pumped from San Luis Lake during the search for a drowning <br />victim, <br /> <br />Construction of the Blanca Wetlands Siphon under the canal at Stanley road crossing <br />is scheduled for spring of 2000, Completion of this structure will deliver water to <br />improve aquatic habitat for native wildlife and establish 8 acres of wetlands within <br />Reclamation right-of-way, <br /> <br />Salvage operations were modified in 1 999 to reduce the amount of flow out of 34 <br />project wells in Stages 304 and 5 as recommended by the Operating Committee for <br />hydrologic impact analysis, <br /> <br />In May 1998, Reclamation initiated a review and analysis of historical data related <br />to draw down, The purpose of the draw down study is to analyze project deliveries <br />and resulting water table levels, agricultural usages and potential impacts on water <br />table levels, weather patterns, and historical trends in recharge, The study is looking <br />at pre- and post-project time periods, The draft study report was completed in 1999 <br />and is in the review process, <br /> <br />Routine preventive maintenance and repair activities continued at salvage and <br />observation well sites, canal structures, pumping plants, shelter belts, and on vehicles <br />and heavy equipment, Other work included aquatiC and noxious weed control, rodent <br />control, and ice removal. Excessive algae growth along the canal continues to be a <br />problem. The algae has been identified as a blue-green algae called Osci//atoria <br />(non-branching filamentous algae). A chemical treatment to control algae has been <br />identified. Treatment began in early 1999, In August 1999, blended chemical heat <br />treatments were used on the bio-fouling problem that exists in the project wells. <br />Additional types of chemical treatments were tried through- out the year, all of which <br />showed minimal improvement. In-house treatments along with new treatment <br />processes continue to be a priority in dealing with the bio-fouling problems, <br /> <br />viii <br />