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Forrest Leaf, P.E. <br />P.O. Box 336714 <br />Greeley, CO 80633 <br />Forrest Leaf, P.E. <br />Mr. Dick Wolfe, PE <br />State Engineer <br />State Engineer's Office <br />1313 Sherman Street, Room 818 <br />Denver, Colorado 80203 <br />September 23, 2009 <br />(970)-397-3063 Phone <br />forrest_leaf@gwest.net <br />Re: Request for 2009 - 2010 Substitute Water Supply Plan (SWSP) for Reese - Logan Sand & <br />Gravel Mine (M-1996-050) Near Atwood, Colorado: Job No. 10246 <br />Dear Dick: <br />This letter is to request a SWSP for Galen Reese - Logan Sand & Gravel Mine located in the SETA of <br />Section 26, 7N, 53W, south of Atwood Colorado pursuant to §37-90-137(11)(a)(11). This letter explains <br />the operations and depletions associated with the 4.5 acres of free water surface (FWS) exposed by the <br />gravel mine, replacement sources and monthly proposed accounting. Also enclosed is a gravel pit well <br />permit. Enclosed is a check for $1,443 ($100 for the well permit and $1,343 for the SWSP) to cover all <br />fees. <br />This SWSP requested covers operations from the January 1, 2009 through December 31, 2010. <br />Description of Mining Operations <br />Mining operations at the Logan Sand & Gravel Mine commenced in 1996 pursuant to a Division of Mines <br />and Geology (DMG) permit M-1996-050). Since that time the mine has produced nominal amount of <br />aggregate via wet mining, resulting in a mine with exposed FWS of 4.5 acres. Figure 1, enclosed, shows <br />the location of the aggregate mine and the 2009 mining operations and future 2010 mining operations. <br />There is no concrete batching and all aggregate is sold as pit run aggregate without washing or aggregate <br />separation. <br />In 2009 - 2010 it is anticipated that the mine will produce 50,000 tons of aggregate. <br />Consumptive Use of Mining Operations <br />The consumptive use attributed to the Logan Sand & Gravel aggregate mine is evaporation from 4.5 acres <br />of FWS via wet mining. There is no de-watering associated with this mining operation. In addition to the <br />aggregate production, water will be required for on-site dust suppression. The water used in the batch <br />plant will be produced from water pumped from the open mine. All uses are considered 100 percent <br />consumptive. The evaporative depletions for all exposed ground water totaling 9.95 acres is estimated <br />from the gross pan evaporation of 72 inches and effective precipitation of 10.58 inches, and compares <br />with the recently decreed net evaporation decreed in the Logan Well Users Decree 03CW 195. <br />Water Rights • Hydrology • Hydraulics • Water Quality <br />E:\L.eat\Reese\Engineering\Correspondence\Reese Pit 09-10 SWSP Renewal Q 09 09 023.doc <br />1