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DEPARTMENT OF NATURAL RESOURCES <br />DIVISION OF WATER RESOURCES <br />FLATIRON CONSTRUCTORS, INC <br />JUSTIN DUMOND, P.E. <br />10188 E 1 -25 FRONTAGE ROAD <br />FIRESTONE, CO 80504 <br />RE: COMPACTED CLAY LINER APPROVAL <br />CAMENISH RESERVOIR, WDID 0504049 <br />CAMENISH BORROW PIT, DRMS M- 2006 -078, WDID 0503009 <br />NWNE S15- T2N -R68W, WATER DIVISION 1, WATER DISTRICT 5 <br />Dear Justin: <br />The purpose of this letter is to approve the lining of the Camenish Reservoir. The <br />Reservoir is located in the NWY4 of the NE %, of Section 15, Township .2 North, Range 68 <br />West of the Sixth Principal Meridian and was constructed by the Camenish .Borrow Pit <br />operations under DRMS Permit No. M -2006 -078. The compacted clay liner test <br />commenced November 10, 2009 and officially concluded on August 19, 2010. Additional <br />monitoring was performed up to July 27, 2011. A site inspection was performed by our <br />office on August 3, 2011 to review site conditions and the raw leak test data. <br />Your report dated August 5, 2011 and subsequent revision dated August 16, 2011 provides <br />the liner summary and leak test result. The test data provided indicates that the pit has <br />been lined to the design standard referenced in the August 1999 State Engineer <br />Guidelines for Lining Criteria for Gravel Pits (1999 SEO Guidelines). Meeting the design <br />standard requires that all water inflows and outflows for the liner perimeter enclosed <br />area must be accounted for on a monthly basis. <br />With this liner approval, Camenish Reservoir may be used to store water in accordance <br />with the 1999 SEO Guidelines. Prior to ANY use of this site, the owner or operator will <br />need to coordinate with the District 5 Water Commissioner (Shera Sumerford, <br />shera.sumerfordcc7r,state.co.us) to review operations and accounting. <br />Please contact-.me at the number below if you have any questions. <br />Sincerely, <br />Jonathan M. Hernandez, P.E. <br />Water Resource Engineer <br />August 16, 2011 <br />ec: Shera Sumerford, Dist. 5 Water Commissioner <br />Joanna Williams, Denver SEO <br />WDID (0503009, 0504049) <br />Water Division 1 • Greeley <br />810 9th Street, Suite 200 • Greeley, CO 80631 • Phone: 970- 352 -8712 • Fax: 970- 392 -1816 <br />http: / /water.state.co.us <br />John W. Hickenlooper <br />Governor <br />Mike King <br />Executive Director <br />Dick Wolfe, P.E. <br />Director /State Engineer <br />David L. Nettles, P.E. <br />Division Engineer <br />