2013-05-29_HYDROLOGY - M1999120 - Laserfiche WebLink

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Mr. Rick Parsons, P.E. L.G. Everist Combined SWSP Amendment 1 Page 6 of 9 May 28, 2013 At times when the Lupton Bottom Ditch pro -rata share deliveries are in excess of the credits needed for this SWSP, the Applicant request the ability to book over augmentation station deliveries into Swingle North or, once approved, Meadows West. Similar to the use of irrigation ditch credits for direct replacement, the book over of irrigation ditch credits into storage will include the prorated return flows as additional replacement obligations in the SWSP accounting. South Platte River— 07CW25 Conditional Storage Rights Campbell's C -Ment Contracting, Inc. d /b /a Suburban Sand and Gravel filed an application in case no. 07CW25 for Campbell West and East Reservoirs. L.G. Everist now owns this property and water rights at the Fort Lupton Site. L.G. Everist now refers to the Campbell West and East Reservoirs as Meadows West and Lupton Meadows, respectively. Upon the construction and approval of a diversion station able to pump water pursuant to the 07CW25 water rights from the South Platte River, the Applicant plans to divert their 07CW25 water for storage when in priority. The conditional water rights of 07CW25 are specific to "storage for later release for augmentation and replacement purposes to offset out -of- priority depletions resulting from Applicant's Gravel Pit [M- 2002 -104] operations ... [and] for industrial purposes associated with operations at [M- 2002 - 104]." The Applicant wishes to use this water for augmentation purposes for depletions associated with this SWSP, and they plan to modify 07CW25 as such. Until 07CW25 is modified to allow uses at Applicant's other gravel pits, water cannot be diverted under the 07CW25 water right. Winter Replacement 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 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 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.