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Exhibit 1 - Baseline Resource SEO Slurry Wall Approval <br />OFFICE OF THE STATE ENGINEER <br />Division of Water Resources <br />Department of Netwal Resources <br />1313 Shwwn Street, Room 818 <br />Denver, Colorado 80203 <br />Phone (303) 888-3561 <br />FAX (303) $$8 -3586 <br />MtpJMrww.weter stft.MUS <br />September 11, 2007 <br />Scott Palmer,-P.E. <br />Deere & Atit Consultants, Inc. <br />600 S. Airport Road, Building. A, St._ilte 203 <br />Longmont, CO W503 <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 />Dear Scott <br />U EiM it. <br />Governor <br />HWS 0. Shmm <br />roacwo <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 June 13, 2007 and August <br />10, 2007 as well as the site inspection conducted on July 10, 2007. The estimated pit infllis <br />from precipitation and groundwater and outflows due to pumping and evaporation indicate that <br />this oft has been lined to the dit s1arrdard referenced in the August 1899 State Engineer <br />Guidelines for Lining - Criteria for Gnus! Pits. Meeting the design standard requires that aff <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 />oil <br />Jana C. Ash, P.E. <br />Water Resource Engineer <br />CC: Robert Stahl, Water Commissioner <br />Shera Sumerford, Water Commissioner <br />