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~`Q~ <br />Forrest Leaf, P.E. <br />1401 41" Avenue <br />Greeley, CO 80634 <br />(970) 396-8906 Tel <br />(970)392-0300 Fax <br />forrest leafnn yahoo.com <br />LEAF ENGINEERING <br />December 19. 2002 <br />Mr. Kevin Rein <br />State Engineer's Ollice <br />1313 Sherman Street, Room 818 <br />Denver, Colorado 80203 <br />Re: Request for Temporary Substitute Supply Plan (TSSP) for Hall-Irwin <br />Corporation's Nissen Pit Near Milliken, Colorado <br />Dear Kevin: <br />This letter is a request for a TSSP for Hall-Irwin Corporation's Proposed Nissen aggregate mine <br />in the S 1!2 of Section 12, 4N, 65W, east of Greeley. Enclosed is a check for $1403.00, which <br />includes $1343.00 TSSP fee and a $60.00 well permit application. <br />Description of Mining Operations. <br />Mining operations at the Nissen mine will produce 500,000 tons of product annually. A future <br />proposed concrete batch plant will produce 100,000 cubic yards ofconcrete annually. Figure 1, <br />enclosed, shows the location of the Nissen aggregate mine. This mine will be lined with a <br />bentonite slurry wall in late 2003 or early 2004. Mining will not commence until the slurry wall <br />is constructed. <br />Consumptive Use <br />The consumptive use attributed to the Nissen aggregate mine is evaporation from limited open <br />water surfaces from de-watering trenches as the aggregate will be dry mined. In addition to the <br />aggregate production, water will be required for a concrete batch plant batching concrete, gravel <br />washing and on-site dust suppression. The water used in the batch plant, and dust suppression <br />Water Rights • Hydrology • Hydraulics • Water Quality <br />F;:'.L.af Ilall`(in.,a fits tinuth I'lane`Rein Nissen Pit'rl'S I' R.quest Lrner Anc ' <br />