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~~ <br />~,~ . (~ ~ L= STATE OF COLORADO <br />OFFICE OF THE STATE ENGINEER <br />ion of Water Resources <br />Divi <br />oc~co~ <br />s <br />Department of Natural Resources ~ <br />~ <br />.F <br /> <br />1313 Sherman Street, Room 818 ' <br /> <br />~' <br />e <br />Denver, Colorado 80203 ' <br />Phone (303) 886-3581 September 11, 2007 <br />FAX (303) 866-3589 <br /> Bill Ritfer, Jr. <br />http~./Iwww.watecstate.co.us Governor <br />RECEIVED Harris D. Sherman <br />Executive Director <br />Mr. Jeffrey Clark ~,'~ S (vacant/ <br />EP 13 2007 <br />Bishop-Brogden Associates, Inc. State Engineer <br />333 West Hampden Avenue; Suite 1050 Diwslon u. rceGlamation, <br />Englewood, Colorado 80i 10 Mining and Safety <br /> <br />Re: Bokelman Iters Pit, Substitute Water Supply Plan <br />DMRS No~2008-080 <br />Section 24, T5N, R68W of the 8~" P.M. <br />Water Division 1, Water District 4 <br />Approval Period: September 1, 2007 through August 31, 2008 (or August 31, 2009 subject <br />to condition no. 1) <br />Contact Phone Number for Mr. Jeffrey Clark: 303-806-8952 <br />Dear Mr, Clark: <br />This letter is in response to your application of February 8, 2007 on behalf of Loveland <br />Ready Mix Concrete, Inc. ("Applicant") requesting a substitute water supply plan for a sand and <br />gravel pit operation owned and operated by Applicant in accordance with C.R.S. § 37-90-137(11). <br />The required fee of $1,593 for the. substitute water supply plan has been paid. <br />Plan Operations <br />This plan seeks to replace depletions resulting from the mining at the Bokelman/Walters <br />Pit. The depletions that result from the proposed mining operation include evaporation and water <br />lost in the mined product. The proposed replacement source is a contract with the City of <br />Loveland for fully consumable water. The Bokelman/Walter Pit is located in Section 24, <br />Township 5 North, Range 68 West of the 61" P.M. just southwest of the Big Thompson River and <br />will be mined in two phases. Phase I consists of four cells on the western portion of the property. <br />Phase II consists of three cells to be located on the eastern portion of the property. Cell 1 within <br />Phase I will be mined beginning in September 2007 and mining in this cell is expected to take up <br />to two years. Cell 1 will be dewatered and this water will be pumped to a settling pond where it <br />will be allowed to recharge the aquifer or be pumped back to the Big Thompson River. <br />Depletions <br />This plan describes the maximum proposed water uses from September 1, 2007 through <br />August 31, 2008 for this proposed new pit. The proposed plan anticipates a maximum one year <br />depletion of 6.26 acre-feet for an exposed groundwater surface area of 0.16 acres. The pit is <br />located greater than 100 feet from the Big Thompson River and the resulting depletions have been <br />lagged to account for the delayed effects on the river system. The IDS AWAS stream depletion <br />model was used to determine the lagged depletions to the Big Thompson River. The following <br />parameters were used in the model: transmissivity {T) = 225,095 gallons per day per foot, <br />specific yield (SY) = 0.2, the distance from the Big Thompson River to the edge of the alluvium = <br />