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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />o <br />~'] <br />N <br />~ <br />...:! <br />I-" <br /> <br />Mr. Steven J. Witte <br />July 9, 1997 <br />Page 3 <br /> <br />through the wasteway gate, When this occurs, there will not be any water at the installed <br />staff gage, and accordingly our rating will not be appropriate. In this instance, we propose <br />to record the diversion at the 5-foot Parshall flume, deduct 10 percent of the recorded <br />amount for canal seepage loss, and use the remainder as the delivery to the Purgatoire <br />River. This loss rate was used in Colorado's Water Budget ("Water Budget Documentation" <br />by Boyle Engineering Corporation, December 1990). We also believe that since we are <br />using less than half of the canal and much of the ditch is chiseled through shale with the <br />invert sealed with silt or is concrete-lined, we believe that 10 percent is conservatively <br />high. ' <br /> <br />The ditchrider for the Highland Canal, Walter Garcia, will report LAWMA's deliveries <br />to the Purgatoire River daily to Bill Howland by telephone. Mr. Garcia will submit the daily <br />record sheets to Don Higbee weekly, and copies of the daily record sheets will be provided <br />to the appropriate parties. <br /> <br />We believe that the above-described methods for measuring and reporting the <br />deliveries to the Purgatoire River are appropriate. Please call if you have any questions. <br /> <br />Sincerely yours, <br /> <br />HELTON & WilLIAMSEN, P.C. <br /> <br />~/VV~ <br /> <br />Thomas A. Williamsen <br /> <br />TAW/mlc <br /> <br />Enclosure <br /> <br />cc: Bill Howland w/enc. <br />Dale Straw w/enc. <br />Donald F. Higbee w/enc. <br /> <br />C:\L101\070997.TAW <br />