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Mr. Simpson <br />May 12, 2006 <br />Page 3 - <br /> <br />The proposed well will be located approximately 7,500 feet from the Middle Fork <br />of the South Platte River. Using the Glover method, we have calculated the lagged <br />depletive effect associated with operation of the well. We estimated a hydraulic . <br />conductivity of 10,000 gpd/ft', based on the presence of clean sand and gravel deposits <br />at the site. The saturated thickness at the site is estimated to be 40 feet. The aquifer <br />speafic yield is estimated to be 0.25 and the distance from the stream to the No Flow <br />Boundary is approximately 9,600 feet. Based on these parameters, our analysis <br />indigtes that over half of the depletions occur within six months of pumping, with all of <br />the remainder occurring within a total of 19 months. A copy of our Glover calculations is <br />enclosed herein. Assuming the net pumping amounts oaxlr under the schedule <br />provided above, the following depletion amounts will occur over the next three years. <br />Natues in Acre-Feed <br /> Jan Feb Mar r Ma Jun Jul Au Se Oct Nov Dec Total <br />2006 0 0 0 0 0 0 0 .002 .022 .050 .075 .087 0.236 <br />2007 .082 .071 .061 .061 .078 .097 .116 .130 .125 .108 .091 .077 1.095 <br />2008 .065 .054 .044 .035 .028 .023 .019 .018 .013 .011 .007 .004 0.319 <br />2009 .002 0 0 0 0 0 0 0 0 0 0 0 0.002 <br />Total 1.85 <br />Replacement for these depletions will be provided through use of the sources that are <br />already included in the USPWCD Substitute Water Supply Plan. In the event that Mr. <br />Allen ceases well pumping, whether temporarily or permanently, the lease shall provide <br />for replacement of post-pumping depletions per the above schedule. <br />Accounting. We propose to use the enclosed spreadsheet calculations to <br />calculate depletions associated with operation of the well, based on the actual amount of <br />water pumped for gravel washing and concrete hatching. The results of the depletion <br />calculations will be incorporated into the overall SWSP accounting calculations, which <br />was enclosed as Exhibit F to the most recent SWSP application in June 2005. <br />~ SWSP Notification. As required by the statute, this request is being copied to <br />all objectors in Case No. 03CW389. As required under Sec. 37-92-308(8) C.R.S., <br />