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<br />(t'l <br /> <br /> <br />C'.:> <br />';') <br />,t'l <br />~-I <br /> <br />-::) <br />f'-';J <br /> <br />" ;~ <br />" <br /> <br />.'-::-, <br /> <br />';~ <br /> <br />'"ol <br /> <br />"'-C,." <br />'~'P <br />.': ~:'t <br />'~'"~' <br /> <br />S~'" <br />~- " <br /> <br />MINUTES OF THE <br /> <br />GRAND VALLEY TECHNICAL COMMITTEE MEETING <br /> <br />February 16, 1984 <br /> <br />The meeting was held <br />Service at 1:00 p.m. <br /> <br />in the Grand Junction Field Office, Soil Conservation <br />An attendance list is attached. <br /> <br />The purpose of the meeting was to discuss the Bureau of Reclamation's pro- <br />gress in running the salt budget model. <br /> <br />DISCUSSION: <br /> <br />Tom Lauer (USBR) discussed the handout that he distribu~d. He stated that <br />the solutions in the Y'Grand Valley Seepage Calculations) show the range of <br />results as the deep percolation and wetted perimeter of ditches and lateral <br />input is varied. The range of results using a deep percolation input of <br />between 6 and 10 inches inclusive, a seepage inflow of 120,000 acre-feet, <br />and a total salt tonnage of 514,800 tons appears acceptable. This corres- <br />ponds to possible solutions 7 through 9 in the "Grand Valley Seepage Calcu- <br />lations" handout. SCS will review the report on deep percolation distributed <br />by the Bureau and return comments by April 1. This report affirms that a <br />deep percolation of 10 inc~es should be considered as a maximum. Meanwhile <br />the Bureau will get a better seepage outflow loading factor by further evalu- <br />ating the base flow separation data. The model will then be run again using <br />the updated outflow loading factors and the results will be discussed at the <br />next meeting. <br /> <br /> <br />The next meeting was set or <br />office conference room, Gra <br />ing was subsequently changed <br />room. <br /> <br />a.m. in the SCS field <br />The date for the next meet- <br />SCS field office conference <br /> <br />Fred Krauss expressed urgency for <br />Coordinating Committee Meeting s edu <br />ditional help can be made avai ble from <br />Salt Lake City, if necessary <br /> <br /> <br />leting the model before the Interagency <br />for June 6-7 al: Grand Junction. Ad- <br />he Regional D:lrector's office in <br />