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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 9`h Street, Suite 200 <br />Greeley, Colorado 80631 <br />Phone (970) 352-8712 <br />Fax (970) 392-1816 <br />www.water.state.co.us <br />January 11, 2007 <br />Colby Hayden, P.E. <br />Deere & Ault Consultants, Inc. <br />600 S. Airport Road, Building A, Suite 205 <br />Longmont, CO 80503 <br />Re: Lining of Shores Ponds B, DMG #1998-013 <br />Sections 1 and 2, T2N, R68W <br />Water Division 1, Water District 5 <br />Dear Colby: <br />OF' <br />ti <br />*r <br />• jet r <br />Bill Ritter, Jr. <br />Governor <br />Hams D. Sherman <br />Executive Director <br />Hal D. Simpson, P.E. <br />Stale Engineer <br />James R. Hall <br />Division Engineer <br />I apologize for not responding to your submittal of the final leak test report in a more timely <br />fashion. I wish I had a good excuse, but the truth is that the submittal got lost on my desk. <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 cover letters dated May 12, 2006 and September <br />29, 2006 as well as the site inspection conducted on May 3, 2006. The estimated pit inflows from <br />precipitation and groundwater and outflows due to pumping and evaporation indicate that this pit <br />has been lined to the design standard referenced in the August 1999 State Engineer <br />Guidelines for Lining 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 />?Z %,-7uv <br />David L. Nettles, P.E. <br />Assistant Division Engineer <br />ShoresPitBLineOK.doc <br />CC: Scott Edgar, Water Commissioner <br />Jeff Deatherage, Denver SEO