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<br />STATE OF COLORADO <br />WATER DIVISION ONE <br />OFFICE OF THE STATE ENGINEER <br />Division of Water Resources <br />Department of Natural Resources <br />810 a Street, Suite 200 <br />Greeley, Colorado 80631 <br />Phone (970) 352-8712 <br />Fax (970) 392-1816 <br />wwwmater state.co.us <br />February 2, 2007 <br />Gary Linden <br />Tetra'.Tech RMC <br />1900 S. Sunset Street,-Suite l-F ----= - - - - -- - - --. - <br />Longmont, 'CO 80501 <br />Re: Lining of Tanabe Pit <br />DRMS Permit No. M-00-002 <br />Section 10, T2S, R67W <br />Water Division 1, Water District 2 <br />Dear Gary: <br />?4. <br />#'?` 1876 • <br />Bill Ritter, Jr. <br />Governor <br />Hams D. Sherman <br />Executive Director <br />Hal D. Simpson. P.E. <br />State Engineer <br />James R. Hall <br />Division Engineer <br />The purpose of this letter is to approve the lining of the above referenced gravel pit. This approval <br />is based`'on the' site` irispectibn conducted on October 13, 2006 and on the information you <br />provided `limier cover letti rs dated `k i lgus# .15, 2006 and January 9, 2007. The estimated pit <br />inflows from- precipitation and groundwater indicate that this pit has been lined to the design <br />standard referenced in the August 1999 State Engineer Guidelines for Lining Criteria for Gravel <br />Pits. Meeting the design standard requires that all water inflows and outflows for this pond <br />must be accounted for on a monthly basis. <br />Please call me if you have any questions. <br />Sincerely, <br />David L. Nettles, P.E. <br />Assistant.Division Engineer - <br />TanabeSiteUneOK.doc <br />CC: Bab Stahl; vVater?Cbmmissioner" `,. <br />; SEf7" <br />`:Kevin Rein 66