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~s <br />impact <br />~~~ environmental scientists & engineers <br />1409 larimer square d¢nver, coloredo 80202 303-571-1300 <br />February 13, 1980 <br />Mr. James B. McArdle <br />Reclamation Specialist <br />Mined Land Reclamation Board <br />1313 Sherman Street <br />Denver, Colorado 80203 <br />Subject: Tucker Aggregate Permit Application No. 80-2 <br />Dear Mr. McArdle: <br />The following information will supplement our letter of February 1, 1980, <br />and the application for the Tucker Aggregate Operation which preceded it. The <br />information contained herein is based upon the conclusions reached in our <br />meeting of February 6, 1980 in your offices. <br />We sincerely appreciate your effort to resolve the issues of concern in <br />the Tucker Application and your objective approach to that resolution. <br />Addressing Exhibit G, the diversion of Lone Tree Creek changes the gradient <br />for that stream only very slightly. The length of the diversion ditch is 60 <br />percent of the original stream bed length over that same area. The diversion <br />ditch is nearly 900 feet long and the stream elevation decreases by approximately <br />10 feet over that distance. In our opinion this is an insignificant change <br />with regard to the hydrologic balance of the stream system and should create <br />no appreciable deposition downstream or erosion upstream. The stream is ephemeral. <br />With regard to water rights, Tucker Construction has obtained both reservoir <br />and ditch rights for the Mantey reservoirs and ditches. These rights are the <br />most upstream or headwater rights on Lone Tree Creek. The rights provide more <br />than enough water for the operation of the facility as projected and for the <br />augmentation plan for the consumptive use of that facility. The finalization and <br />approval of these water rights and plans for their use is currently being conducted <br />with the State Water Commissioner from Fort Morgan, Mr. Robert Samples, and with <br />the District One Water Engineer, Mr. James Clark. Basically, the plan consists <br />of the use of waters collected during the spring runoff to supply necessary wash <br />water, evaporative loss and consumptive loss. <br />