2012-02-03_HYDROLOGY - M2001017 - Laserfiche WebLink

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Well Field WDID 0204101 0204101 0204101 Well Field Name EVERIST LFH WL FLD EVERIST LFH WL FLD EVERIST LFH WL FLD Well WDID 0210211 0210212 0210213 Well Name EVERIST LFH WELL 66271 -F EVERIST LFH WELL 66273 -F EVERIST LFH WELL 66274 -F Relevant Well Permit 66271 -F 66273 -F 66274 -F Well Location SW, NE SEC 30, 2N, 66W NW, NW SEC 24, 1S 65W NW, NW SEC 30, 2N, 66W Aquifer LAR /FOX HILLS LAR /FOX HILLS LAR /FOX HILLS Allowable AF Amount 73.1 ACRE FEET COMBINED Mr. Rick Parsons, P.E. L.G. Everist Combined SWSP Page 5 of 9 February 3, 2012 District 5 Water Commissioner when making releases from this reservoir. Credit will not be given to any releases not measured to the satisfaction of the Water Commissioner or Division Engineer. South Platte River L. G. Everist owns 2.25 shares of the Lupton Bottom Ditch. Of the 2.25 shares of the Lupton Bottom Ditch water, 1 share will be dedicated to this plan in 2012 and 2013. The 2.25 shares were historically used to irrigate 95 acres of corn and small vegetables. The land historically irrigated by the 2.25 shares is the same land that is currently being mined at the Ft. Lupton Pit. Assuming a 10% ditch Toss and a 55% irrigation efficiency, the dry -year consumptive use of the 2.25 shares was determined to be 138 acre -feet. The prorated consumptive use and return flows for the 1 share is shown in attached Table 11. The Lupton Bottom shares will be delivered back to the South Platte River at either the augmentation station located just north of WCR 14.5 or the East Lateral Ditch into Little Dry Creek. Winter replacement will be made from the Rinn Valley Phase 3 Reservoir when there is no South Platte River call between the Ft. Lupton and Lupton Meadows Pits and the confluence of the South Plate River with the Saint Vrain Creek. Releases from this reservoir to cover the South Platte Pits will account for the transit losses to the South Platte River of approximately 2.75 percent based on about 11 river miles from the reservoir releases to the Saint Vrain Creek down to the confluence with the South Platte River times 0.25 percent winter transit loss per mile. During times a winter call on the reach of the South Platte (i.e., the Milton Reservoir storage right at the Platte Valley Canal Headgate), replacement supplies will be from L.G. Everist Laramie Fox Hills wells. The nontributary Laramie -Fox Hills aquifer water will be withdrawn by existing wells pursuant to permit nos. 66271 -F, 66273 -F and 66274 -F. The wells are currently permitted for industrial, commercial and augmentation use and are allowed a combined average annual withdrawal of 73.1 acre -feet and a pumping rate of 150 gpm. The wells are further described in the following Table F. The Applicant's accounting includes the 2% relinquishment requirement for the nontributary Laramie -Fox Hills water. TABLE F — L.G. EVERIST LARAMIE FOX HILLS WELL SUMMARY A monthly breakdown of the stream depletions from the mining operations as well as the replacements are shown in the attached Tables 8 and 11. Conditions of Approval I hereby approve the proposed substitute water supply plan in accordance with Section § 37 -90- 137(11), C.R.S. subject to the following conditions: 1. This plan is approved with an effective date of January 1, 2012 and shall be valid through December 31, 2013 unless otherwise revoked or modified. If this plan will not be made absolute by a water court action by the plan's expiration date, a renewal request must be submitted to this office with the statutory fee (currently $257 /pit) for each gravel pit no later than November 15, 2013.