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Exhibit 1 - Baseline Resource SEO Slurry Wall Approval <br />OFFICE OF THE STATE ENGINEER <br />Wmbn of Waier Resources <br />DeParftned of Nalurai Resounxs <br />1313 Shannon Sheet, Roam 818 <br />Deriver, Colorado &4M <br />Phone (303) BW3581 <br />FAX {303} 860 -3589 <br />t*Jl ~.weter.stale -MUM <br />j 1 <br />September 11, 2007 <br />Scots Paimer,,P.E. <br />Deere & Ault Consultants, Inc. <br />600 S. Airport Road, Building A, Suite 205 <br />Longmont, CO 80503 <br />Re: Walker Reservoir Phase I: Pond Nos. 1 and 2 <br />D&A Job No. CG- 0134.014.00 <br />Water Division 1, Water District 2 <br />i�= .,..� <br />s s <br />tail Rw dr. <br />GOMM <br />H&Ms 0. Ghwma <br />Ewcave MecWr <br />NaCV <br />The purpose of this letter is to approve the lining of the above referenced gravel pit. This approval <br />is based on the information you provided under a covers letters dated dune 13, 2007 and August <br />10, 2007 as well as the site inspection conducted on July 10, 2007. The estimated pit inflows <br />from precipitation and groundwater and outflows due to pumping and evaporation indicate that <br />this oil has been lined to ft design oandard referenced in the August 1899 State Engineer <br />Guideline`s for LWnd Criteria for Gravel Pits. Meeting the design standard requires that all <br />water inflows and outflows for this pond must be accounted for on a monthly basis. <br />Please call me if you have any questions. <br />Sincerely, <br />Qkt� c 0"�) <br />Jana C. Ash, P.E. <br />Water Resource Engineer <br />CC: Robert Stahl, Water Commissioner <br />Shera Sumerford, Water Commissioner <br />