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. ~ r- U! o . . 1978. St<lge One cov~rs approxilllatd'l 10 percent of the lInit .;]r~.l 311.1 i~ clc~i.",ncd tu pr0viclc illf\1f111.1- tion to fully an<llyze tIle eff~ct ivencss of tIle pro- posed plan. As part of the plan of developm~nt for Stage One, 6.8 miles of the Gover11lncnt High 1 i ne Canal have been concr~te-lined and cross-drain03ge faeLl ities have been complett!d. The Grand Valley Field Sta- t ion was constructed to serve as construction head- quarters for the overall unit and after construc- t ion is complete wi II be used for operat ion and maintenance or for other project uses. Construc- tion work began in October 1981 to con::;olidate 13 open channel laterals presently serving the area under the newly lined portion of the Government Highline Canal into 12 pipe late~als. Late~al con- struction is being conducted unde~ cont~act to the Small Business Administ~ation \0'110 subcontracted the actual ~ork to a disadvantaged minority contractor. Automated traveling water screens for removal of trash and debris will be placed at the heginning of the canal lining. Data-gatherioB is cant inuiog, to determine the na- ture and extent of the salt loading to the Colorado River. Such data will include the following: (1) flow measurem~nts and samples from all major washes and drains; (2) samples and water levels from ex- isting observation wells in the Reed Wash Study Area; (3) s.::lmples and wat~r levelR from an exten- sive net.....ork of wells valleywide; and (4) computa- tion of water and salt budgets for the Grand Valley and for the Reed \oi'ash Study Area. GT.Jnd VillI ,~v \In i c ,\rrl'lf9"K2 Pa~l~ 2 of 2 STAGE TWO PLANNING A pla.n ()f study f~)r Stage Two (the remainder of the Grand Val ley Unit) wa:; publish~d in October lq81 and inv~st i.gat ions Wcf02 init lated in Novc:l1ber. Stage Two inve~tiRations a~e to include evaluation of variolls alternatives, and because nonlining opt ions were only marginally evaluated before authoriz~tion. salinity control measures other than I ining are being developed. Collect ion of tech- nical and environmental data is continuing. Alter- native plans are being developed for the west end of the unit arcs. These alternatives include opportunit ies for the collect ion and use of sal ine ....ater IlS cooling media for a cnal-fired powerplant ....hich. based on appraisal-level analyses, appear to be relatively cost effectiv~. Estimtltes of costs and salinity reduction are being made for canal and 1 ateral improvement slternat ives in the Stage Two area. Completion of the Regional Dircctol.'s defi- nite plan report and draft environmental statement is scheduled for 1985. LOCAL INTEREST Interei>t in the Grand Valley Water Systems Improve- ment Prozr2m by Federal. State, and local concerns is continually growing. In keeping with this in- terest. the Grand Valley Salinity CoordinClting Com- mittee meets regularly and is open to all persons and a!!,encies interested in attending. The purpose of the commi.ttee is to coordinRte all sallnitv studies i'lnd to disseminate information to the pub- 1 ic.