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<br />~ ~.., <br /> <br />L") <br />...-j a person at the site. Readings would only be taken during the individuals' <br /> <br />, <br />..- <br /> <br />'".-:;' regular working hours. Flow data would be extrapolated to times before and <br /> <br />after regular working hours. Sufficient measuring devices 'lOuld be provided for <br /> <br />permanent installation of equipment during the irrigation SE!ason. Some <br /> <br />equipment would be provided for monitoring soil moisture. For :nany of the <br /> <br />sites, the farmer would provide some of the data as noted in EL-l. Soil <br /> <br />moisture would be estimated using the feel and appearance method. Accuracy of <br /> <br />deep percolation losses would be about plus or minus 35 pereent. <br /> <br />Equipment Level 3. (EL-3) <br /> <br />This equipment level would provide similar equipment to EL-2 except that <br /> <br />totalizing stage recorders would be used to measure flow. Advance data would be <br /> <br />collected with use of automatic timers. Soil intake data would be collected <br /> <br />with the use of automated equipment. For the collection of sprinkler data, <br /> <br />additional equipment would be provided for evaluating sprinkler systems. <br /> <br />Additional equipment would be provided for soil moisture monitoring. <br /> <br />Evapotranspiration data would be estimated using, the ModifJ.ed Penman method. <br /> <br />This requires the installation of several complete weather stations to collect <br /> <br />climatic data. Some computer capability would be provided at this level to <br /> <br />analyze some of the data. Accuracy of deep percolation 10SSE!s would be about <br /> <br />plus or minus 20 percent. <br /> <br />Equipment Level 4. (EL-4) <br /> <br />Equipment requirements at this level would provide similar E!quipment to EL-3 <br /> <br />except that digital stage recorders would be used to record data and would be <br /> <br />processed with a computer. Additional computer programs would be developed at <br /> <br />this level to analyze the data. Equipment would be available to evaluate any <br /> <br />sprinkler system. Evapotranspiration data would be estimated in the same manner <br /> <br />32 <br />