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Bucklen Pit SWSP November 7, 2018 Plan ID 3183 Page 3 of 9 duration of historical dewatering operations, it is assumed dewatering operations at the Bucklen Pit are in a steady state condition. At least three (3) years from the expected cessation of dewatering, a plan that addresses the replacement of long term lagged depletions, including depletions that occur with the "first fill" of the pit must be submitted to our office. Should dewatering at the pit cease during this SWSP approval period, this SWSP will automatically be void until an amendment is sought and approved. The monthly evaporative and operational depletions to the Cache la Poudre River were lagged from the pit using the Alluvial Water Accounting System (AWAS) program developed by the Integrated Decision Support (IDS) Group at Colorado State University with the following parameters: • Distance from the centroid of the gravel pit pond to the river (X) = 1,390 feet • Alluvial aquifer width (W) = 10,650 feet • Specific yield (S) = 0.2 • Transmissivity (T) = 120,000 gallons per day per foot Lagged depletions due to past and projected operations at the Bucklen Pit site were calculated to total approximately 36.61 acre-feet during this plan period, as shown on the attached Table 3. Replacements During the irrigation season of April through October, the replacement source will be consumptive use credits associated with the historical irrigation use of six (6) shares of the Greeley Irrigation Company. During the non-irrigation season of November through March, replacement water will be provided by a lease of 16.0 acre-feet of augmentation water from the Platte River Power Authority. See Table 5 for a monthly breakdown of replacement water for WY 2019. Greeley Irrigation Company ("GIC") Shares The Applicant owns six (6) out of a total of 519.7 GIC shares, all six of which have been dedicated to this SWSP for this plan period. A share of GIC water provides the shareholder with GIC direct flow water and Fossil Creek Reservoir water. The Applicant's GIC shares will be delivered to the Cache La Poudre River at the 23rd Avenue and Fourth Street Return Station (WDID 0302318). Replacements to the river will be made directly adjacent to the Bucklen Pit. Due to the close proximity of the return station to the Bucklen Pit, no transit losses will be assessed for the delivery of the GIC shares. A portion of the Greeley Canal No. 3 (WDID 0300934) was changed in Division 1 Water Court in case no. 1996CW658 based on a ditch-wide analysis by the Poudre Prairie Mutual Reservoir and Irrigation Company ("Poudre Prairie"). The use of the subject ditch shares in this plan shall be in accordance with the terms and conditions decreed in case no. 1996CW658, including monthly and annual volumetric limits on water deliveries and monthly return flow requirements. The decree in case no. 1996CW658 found that 519.7 shares were used to irrigate 3,501 acres with an average historical consumptive use of 5,358 acre-feet per year, which yields an average consumptive use credit of 10.31 acre-feet per share (5,358 acre-feet _ 519.7 shares). Based on the above, the six shares to be used in this plan result in a consumptive use credit of approximately 61.86 acre-feet per year (10.31 acre-feet per share x 6 shares). One of the Applicant's six shares was associated with Farm W-49, which is now dried up because it is part of the Bucklen Pit. The other five shares were referred to as "floating shares" in case no. 1996CW658. In accordance with paragraph 19 of case no. 1996CW658 the lands historically irrigated by the "floating shares" are reported to have already been dried up and are no longer irrigated.