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<br />I' <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />I <br />1 <br />1 <br />I <br />I <br />I <br />I <br />1 <br /> <br />o <br />C') <br />N <br />.::-. <br />~ <br />oo,J <br /> <br />Mr. Steven J. Witte <br />August 8, 1997 <br />Page 3 <br /> <br />The use of the H-I model parameters does not change our conclusions set forth in the <br />July 10 submittal about the procedure to calculate replacement credit for this year. Accordingly, <br />we propose to use the following algorithm for calculating replacement credit for LAWMA's <br />Highland Canal interests delivered to the Purgatoire River through Wasteway NO.3: <br /> <br />1. When the Highland Canal diversions are being delivered to turnouts downstream of <br />Wasteway No. 3 as well as to Wasteway No.3, the delivery to the Purgatoire River will <br />be measured and recorded using the rating table prepared for the wasteway gate. The <br />replacement credit at the Purgatoire River will equal the measured delivery times 69.4 <br />percent. <br /> <br />2. When water is delivered to Wasteway No.3, but not to down-ditch turnouts, the delivery <br />will equal the measured flow at the 5-foot Parshall flume less 10 percent for ditch <br />seepage and minus the delivery to Davidson's turnout (if any). The replacement credit <br />will be equal to 69.4 percent of the calculated delivery. <br /> <br />The Highland Canal ditch rider will inform Bill Howland daily of the deliveries to the <br />Purgatoire River and will submit the daily written record to LAWMA. LAWMA proposes to store <br />the replacement credit less transit loss in John Martin Reservoir's Offset Account. LAWMA <br />requests that the unconsumed portion of the assessed transit loss (90 percent) between <br />Wasteway NO.3 and the reservoir be stored in the Offset Account. LAWMA also requests that <br />5.0 percent of the storage accruals in the Offset Account attributable to Highland Canal <br />deliveries be reserved for replacement with respect to Conservation Storage during December, <br />January and February. <br /> <br />Please call if you have any questions. <br /> <br />Sincerely yours, <br /> <br />HELTON & WILLIAMSEN, P.C. <br /> <br />~;Jt1I~ <br /> <br />Thomas A. Williamsen <br /> <br />TAW/mlc <br /> <br />Enclosure <br /> <br />cc: Donald F. Higbee w/enc. <br />Hal D. Simpson w/enc. <br />David L Harrison, Esq. w/enc. <br />Dennis M. Montgomery, Esq., w/enc. <br /> <br />C:\L 101\080897.TAW <br />