2015-08-06_HYDROLOGY - M1996049 - Laserfiche WebLink

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Mr. Raul Passerini, P.E. Page 7 June 24, 2015 The irrigation consumptive use credits resulting from the dry -up of 138 acres totals 111.3 acre-feet. Historical return flows from irrigation on this site are to be maintained by continuing diversions through the Famine Ditch, the Old Whetstone Sheep Creek Ditch, the South Rock Creek Ditch, and the McKay Ditch. Please note that approval of these credits does not imply a position by this office in any subsequent change of water right or other litigation for these water rights. In addition, note that a comprehensive stream depletion analysis considering return flow lags may be necessary for approval of a plan for augmentation. Replacement water to offset depletions during the non -irrigation season is to be provided by releases from storage from Green Mountain Reservoir and Dillon Reservoir. The schedule of releases from storage is outlined in the attached Tables 13 and 14. Everist and the U.S. Bureau of Reclamation ("Bureau") entered into a long-term water service agreement in 1993 for up to 25 acre-feet per year of industrial Green Mountain Reservoir water to augment Everist's depletions to the Blue River (Contract No. 3-07- 60=W0902). This agreement was amended in 1994 to increase the amount of augmentation water to 39 acre-feet per year. A second amendment was executed in 1998 to further increase the augmentation water amount to 84 acre-feet per year. Of this total 17.37 acre-feet are to be used for augmentation of out -of -priority depletions for Love Pit, pursuant to the decree in case no. 96CW0176. An additional 6 acre-feet are required for the Everist's contract with Summit County. The remaining 60.63 acre-feet are available to be used to replace out -of -priority depletions for the Maryland Creek site. For 2015 and 2016, releases from Green Mountain Reservoir are to total 34.86 acre-feet and 36.27 respectively, under the existing contract with the Bureau. A total of 3.3 acre-feet are available for release from Dillon Reservoir pursuant to an agreement with the Board of Commissioners of Summit County. (A total of 4.3 acre-feet are included in the contract; however, one acre-foot is dedicated to the operation of the augmentation plan decreed in Case No. 96CW176, leaving 3.3 acre-feet available for use in this SWSP.) For 2015 and 2016, no releases are to be made from Dillon Reservoir for this SWSP. Conditions of Approval I hereby approve the proposed SWSP in accordance with S 37-90-137(11), C.R.S., subject to the following conditions: 1. This SWSP shall be valid from January 1, 2015 through December 31, 2016 unless otherwise revoked or modified. If this SWSP will not be made absolute by a water court action by the SWSP expiration date, a renewal request must be submitted to this office with the statutory fee (currently $257) no later than November 15, 2016. 2. Well permit, Permit No. 78035-F was obtained for the current use and exposed pond surface area of the gravel pit in accordance with S 37-90-137(2) and (11), C.R.S. 3. The total surface area of the ground water exposed at the Maryland Creek Ranch Pit must not exceed 33.18 acres, which results in a maximum evaporative loss of 57.56 acre-feet per year. 4. The annual water used for operational purposes at the Maryland Creek Ranch Pit shall not exceed the following amounts: • 3.1 acre-feet per year for dust control • 3.4 acre-feet of water lost in the mined aggregate (104,000 tons) for 2015, • 3.6 acre-feet of water lost in the mined aggregate (109,200 tons) for 2016 • 7.8 acre-feet of water used for concrete production (84,564 cubic yard) for 2015