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BBA <br />water consultants <br />BISHOP-B ROGDEN ASSOCIATES, INC. <br />February 4, 2011 <br />Heidi Frey <br />Division of Water Resources <br />1313 Sherman St., Room 818 <br />Denver, CO 80203 <br />Michael A. Sayler <br />Christopher j. Sanchez <br />Jeffrey A. Clark <br />Charles E. Stanzione <br />Raymond j. Dunn <br />Daniel O. Niemela <br />Laurel E. Stadjuhar <br />Re: Renewal Request for Substitute Water Supply Plan for Transit Mix Concrete Company's <br />Grisenti Pit, Pursuant to 37-90-137(1'1) in Water Division No. 2. <br />Dear Heidi: <br />This letter constitutes a renewal request for a Substitute Water Supply Plan (SWSP) on behalf of our <br />client Transit Mix Concrete Company (Transit Mix) for their Grisenti Farms Gravel Pit aggregate <br />operations (M-2001-005) located near Florence, Colorado in the Arkansas River basin (Water <br />Division,2) pursuant to Section 37-90-137 (11), C.R.S. We are also submitting a check for $257 with <br />this application in order to cover the cost of the review of the SWSP renewal. This renewal follows the <br />same terms and conditions set forth in the previous SWSP request submitted in our letter dated <br />January 5, 2010 and approved on June 30, 2010. <br />PROJECT DESCRIPTION <br />Transit Mix has a lease agreement with the Grisenti's to mine sand and gravel from approximately 100 <br />acres of land along the Arkansas River east of Florence (Section 13, Township 19 South, Range 69 <br />West), as shown in Figure 1. The mining operation is divided into two phases. Phase 1 involved the <br />mining of approximately 35 acres located east of Highway 115 and west of Brush Hollow Creek which <br />has been completed and serves as a settling pond. Transit Mix is currently in Phase 2 of the operation. <br />The Grisenti Farms Gravel Pit (Grisenti Pit) causes depletions to the Arkansas River by exposing <br />ground water to evaporation, removing ground water in the mined material, and using ground water <br />for dust control purposes. The depletions are being replaced by Lester-Attebery Ditch irrigation <br />credits and Twin Lakes Reservoir releases. <br />