Municipal and Industrial System, Bonneville Unit, Central Utah Project, Utah: correspondence and documents, 1979

Page 85

• . December 1979 Status Report - Colorado River Salinitv Control Project - Title II of the Colorado River Salinity Control Act (P.L.93-320.) >w- Jt Title II of the Colorado River Salinity Control Act authorized the construction of four salinity control units in the Colorado River Basin above Imperial Dam. They are the Grand Valley and the Paradox Valley Units in Colorado, the Crystal Geyser Unit in Utah, and the Las Vegas Wash Unit in Nevada. Since that authorization, two of the units, Crystal Geyser and Las Vegas Wash Units, have been deferred because of poor cost effectiveness and seme uncertainties about their proposed solutions. Brief status statements follow for the other units. SN r Grand Valley Unit Initial construction en the Grand Valley Unit will be limited to the Stage I area, a 6,300 acre portion of the unit located in the Reed Wash drainage below the Government Highline Canal. The Stage I area will be closely monitored to determine its effectiveness in preventing salt from entering the Colorado River, and recommendations for proceeding with the remainder of the Unit will be based on the evaluation of re­sults from this monitoring program. The estimated cost of Stage I features is $18 million, based on January 1979 prices. The cost of the entire Grand Valley Unit has been estimated at $146 million (based upon a January 1978 feasibility study). Negotiations are currently Association to finalize an atory legislation has been (September 6, 1979) to inc P.L. 93-320 - wildlife mit The amendatory legislation Its introduction is expect legislation limits constru current legislation are co October 9, 1979, to the As under way with the G OSM contract for Sta introduced to the Ho lude features not spe igation facilities an has not been introdu ed soon. The House v ction to the Stage I ntained in the Ccmmis sistant Secretary. rand Valley V/ater Users ge I features. Amend-use of Representatives cifically authorized by d closed pipe laterals, ced to the Senate, but ersion of the amendatory area. Details on the si oner's memorandum of Estimates of the schedule for Stage I activities call for signing of the 0&M contract with the water users in early spring 1930, issuance cf Specifications for the lining of the Government Highline Canal in May, aware of the contract for the canal lining in mid-summer, and a construc­tion start en the canal in mid-October 19S0 when it is dewatered. The schedule for work on the lateral system is nearly concurrent with work on the canal, except that some work on the laterals can proceed during the Irrigation season. Paradox Valley Unit Stage I of the Paradox Valley Unit is a testing program with two object­ives: proof of the pumping concept and collection of design data for Enclosure 3 (7 pages) B»«T o/'r