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,Division of Water Resources <br />RE• GredeyPitSWSP <br />May ZS, 2010 <br />Page 3 of4 _ <br />REPLACEMENT SOURCES <br />Two replacement sources. are proposed to replace depletions from the Greeley Pit. -The first <br />source is a -61.7 acre-feet lease of augmentation water from the Graham Ditch Company that will, <br />supply-replacement water during the months of May 2010 through October 2010: The second <br />source . is an 11.5 acre-feet lease of augmentation water provided by the Platte River power <br />Authority. which. will provide, replacement water from November 2010 through. March 201.1: <br />` Both sources are correctly located to make replacements to Ogilvy Ditch, which is the first <br />calling water right below the- Greeley Pit point of depletion. <br />61.7 acre fecy4ugmeaMion Lease from the Graham Duch Company' <br />The lease of augmentation water from the. Graham Ditch Company consists of developed water <br />collected and .delivered to the Cache la Poudre via the Graham Seep Ditch, the terminus of which- <br />.Js . located north of the city of Greeley.. Deliveries to the Cache la Poudre are measuued at a flume <br />.located approximately 380 feet from the mouth of the ditch. Augmentation credit is determined <br />::by multiplying measured deliveries by 47.5%; the lease obtained by Hiner consists of credit only, <br />and actual deliveries on Hinces -behalf will include additional water to account for the 47.5% <br />factor: The deliveries will <br />occui.during.the months of May through October, when-the -most <br />upstream call affecting.this reach is typically the Ogilvy Ditch. As shown on Figure 1, the. . <br />:deliveries. are made to the .Cache la Poudre River adjacent to the estimated point of depletion <br />from the Greeley Pit; therefore, no transit losses need be assessed: The lease amount of 61.7- <br />acre-feet: is sufficient to cover all depletions during the May through October timeframe. as <br />.*vim in Table No.-3,.- A .copy of the executed lease is attached. <br />145. ante: feet Augmentation Lease frow-the Platte Rlyer Power Authority <br />The lease of augmentation water from the Platte River Power Authority consists of fully <br />consumable water -released from Fossil Creek. Reservoir. near the town of Timnath. These <br />releases will occur. -during the .months. Of November through March,. when the typical call <br />affecting this reach is far downstream on the South Platte River. The releases are made to the <br />Cache. ]a Poudre .River- approximately 26.6 miles upstream of the estimated point of depletion <br />from -.the -Greeley . Pit; a transit loss of 0.25% per mile is assessed on -all releases: The lease <br />amount of :11.5 • acre-feet therefore results in a credit. of -10.74 acre-feet, " which is sufficient to <br />cover all depletions during the November through March timefraln as shown in Table No. 3. A <br />copy o£the, :executed lease is attached. <br />. _ OPERATION .OF- PLAN " - <br />Evaporative consumptive use from the Greeley Pit will be assumed to equal the values displayed <br />in Column (Q).-of- Table No. 1 for any given month. <br />. During the "months of December -and - <br />:.._....,?:_ ._.:. Jaimar . the.-period :during.which.the exposed-.water surface is covered in ice will be-tracked-to <br />verify that a credit for zero evaporation in those months is appropriate. Operational consumptive <br />fuse-will be determined by tracking the number of tons of material produced plus the amount of <br />waterAverted for dust control in a given month. Should these parameters fail to be adequately <br />tracked, the operational consumptive use will be assumed to equal the values provided in Table <br />No. 2.' The.number of days during which a valid senior call is active-on this reach of Cache la <br />Poudre River will also. be-tracked. The monthly depletions that require replacement will equal