2024-06-18_HYDROLOGY - M1977436 - Laserfiche WebLink

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Holcim South Platte Combined SWSP June 18, 2024 Plan IDs 3614, 4773, 3624, 4772, 4616, 3437, 3376, 3650, 3668, 5475, 5829, i± 6243 Page 9 of 26 In paragraph 6.7.4. of the decree entered in case no. 1996CW658, future farm headgate deliveries of the 67.75 shares owned by Poudre Prairie Irrigation Company were limited to 1,712 acre-feet per year (25.26 acre-feet per share) and 12,631 acre-feet (186.43 acre-feet per share) in any consecutive 10 year period. For the purposes of this one-year SWSP, deliveries of GIC direct flow water associated with the 3 shares must be limited to a farm headgate delivery of 55.8 acre-feet (18.6 acre-feet per share). The historical return flows associated with the 3 shares that are the subject of this SWSP shall be maintained in accordance with the return flow factors identified in case no. 1996CW658. The return flow obligations will be accounted for and replaced under this SWSP. For the purposes of this SWSP, you have used a projected yield of 20.31 acre-feet of GIC direct flow water per share and 1.19 acre-feet of Fossil Creek Reservoir deliveries per share. These amounts are consistent with projected deliveries per share for Year One as described in paragraph 28 of the decree entered in case no. 2003CW348. Projected deliveries for Year One were calculated in accordance with paragraph 20.3.3 of the decree entered in case no. 2003CW99, and are based on 2002-2006 recorded deliveries. As specified in case no. 1996CW658, all GIC direct flow deliveries incur an immediate surface return flow obligation of 23.7%, and all Fossil Creek deliveries incur an immediate surface return flow obligation of 20.1%. The estimated consumptive use credit is therefore 15.50 acre-feet per share for GIC direct flow water, and 0.95 acre-feet per share for Fossil Creek Reservoir water. For the purposes of this SWSP, Holcim is assuming that the GIC's 60 preferred rights in Fossil Creek Reservoir will not be available to GIC during WY2024. Excluding the Fossil Creek Reservoir component of the GIC deliveries, the projected farm headgate delivery of the 3 shares will equal 60.93 acre-feet per year (3 shares x 20.31 acre-feet/share), with a return flow obligation of 27.21 acre-feet. The total consumptive use credit for the 3 shares is therefore projected to equal 33.72 acre-feet for 2024. The GIC shares will be delivered back to the river through the 23' Avenue and Fourth Street Return Station. Bucklen Equipment Company Lease The Applicant executed an agreement with Bucklen Equipment Co., Inc. for the lease of excess augmentation credits from the Bucklen Pit SWSP (WDID 0302538) during the period of April through October 2024. A copy of the lease, dated December 11, 2023, is attached. The excess augmentation credits will be generated from six (6) Greeley Irrigation Company shares owned by the Bucklen Equipment Co., Inc. The return flow obligations associated with the use of the six Bucklen GIC shares are counted as a depletion in and will be replaced under the Bucklen Pit SWSP. After use in the Bucklen Pit SWSP, the shares are projected to produce a total of 71.82 acre-feet of excess credits during the 2024 irrigation season. According to the agreement, Bucklen Equipment Co. will lease to Holcim as needed any excess augmentation credit available during the 2024 irrigation season for use. At the time of execution of the agreement, it was anticipated that a total of 71.82 acre-feet of excess augmentation credit would be available for use in this SWSP. The Bucklen GIC shares will be delivered to the Cache la Poudre River at the 23rd Avenue and Fourth Street Return Station (WDID 0302318). City of Greeley Lease Holcim has previously entered into a water lease agreement with the City of Greeley under which Greeley could providefully consumable water for replacement purposes in February 2023. For 2024, Holcim may lease water from the City of Greeley as needed. The water is discharged to the Cache la Poudre River from the City's wastewater treatment plant.