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LYMAN HENN, BRIERLEY ASSOCIATES, LLC <br />BENNY SILJENBERG, P.E. <br />110 16 STREET, STE 700 <br />DENVER, CO 80202 -5202 <br />RE: SLURRY WALL LINER APPROVAL <br />GEISERT RESERVOIR (WDID 0303795) <br />GEISERT PIT, DRMS M- 1978 -210 (WDID 0303030) <br />S31- T6N -R65W, WATER DIVISION 1, WATER DISTRICT 3 <br />Dear Benny: <br />The purpose of this letter is to approve the lining of the Geisert Reservoir. This reservoir is located in <br />the N1/2 of the NESW, N1/2 of the NWSE, S1/2 of the SENW, and the S1/2 of the SWNE all in <br />Section 31, Township 6 North, Range 65 West of the 6 P.M. and is a part of the Geisert Pit (DRMS <br />M- 1978 -210). The slurry wall liner test commenced April 25, 2012 and concluded on July 26, 2012. <br />Your report dated July 31, 2012 provides the liner summary and 90 -day leak test result. The test data <br />provided indicates that the reservoir has been lined to the performance standard referenced in the <br />August 1999 State Engineer Guidelines for Lining Criteria for Gravel Pits (1999 SEO Guidelines). <br />Meeting the performance standard requires that during reservoir operations all water inflows <br />and outflows for the liner perimeter enclosed area be accounted for on a weekly basis. <br />With this liner approval, Geisert Reservoir is now classified as a lined reservoir in accordance with the <br />1999 SEO Guidelines. Water shall not be impounded by the reservoir except pursuant to lawful <br />diversions allowed by statute or decree. At all other times, all inflow of water into the reservoir from <br />any source, including precipitation and ground water inflows shall be removed by the reservoir <br />operator. Prior to ANY use of this site, the owner or operator will need to coordinate with Mark <br />Simpson, Acting District 3 Water Commissioner, to review operations, measurement structures, and <br />accounting. <br />Please contact me at the number below if you have any questions. <br />Sincerely, <br />Jonathan M. _ an•ez, P.E. <br />Water Resource Engineer <br />DEPARTMENT OF NATURAL RESOURCES <br />DIVISION OF WATER RESOURCES <br />August 3, 2012 <br />ec: Mark Simpson, Acting District 3 Water Commissioner (Mark.Simpson @state.co.us) <br />WDID File (0303030, 0303795) <br />ezia <br />SEP172012 <br />Division or t ec!amation, <br />Mining & S a f ety <br />Water Division 1 • Greeley <br />810 9th Street, Suite 200 • Greeley, CO 80631 • Phone: 970- 352 -8712 • Fax: 970- 392 -1816 <br />www.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 />