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DEPARTMENT OF NATURAL RESOURCES <br />DIVISION OF WATER RESOURCES <br />�gg <br />FaoecuErne-Di=Wr <br />m wauk px <br />December 16, 2011 okeewrisfate&ngi = <br />DaPA idd=Er r <br />DEERE & AULT CONSULTANTS, INC. <br />DEREK H. FOSTER, P.E. <br />600 S. AIRPORT ROAD, BUILDING A, SUITE 205 <br />LONGMONT, CO 80503 <br />RE: SLURRY WALL LINER APPROVAL <br />KIRBY- DFASHAM RESERVOIR, WDID 0203386 <br />PARKER- DERSHAM RESOURCE PIT, DRMS m- 2486 -003, WDID 0203026 <br />BASELINE RESOURCE PIT, DPJ48 M- 1887 -068, WD-10 0203017 <br />E°A SEY4 836 -TI N -R67W, WATER DIVISION It WATER DISTRICT 2 <br />Dear Derek <br />The purpose of this letter is to approve the lining of the Kirby- Dersham Slurry Wall. The slurry wad is <br />generally located in the E% of the SEX of Seaton 36, Township. I North, Range 67 West abuts the <br />adjacent Robert Waker Reservoir (WDID 0203358) and Is a part of the Packer -Demha m Resource <br />and Baseline Rew-nm Gravel Pits, The slurry wall liner test commenced May 22, 2091 and <br />concluded on September 8, 2011. A site inspection was performed by our ot%e on September 8, <br />2011 to review site conditions and the leak test plan. <br />Your MW dated December 12, 2011 provides the liner summary and 90.day leak test fssa The <br />tact data provkled WItates ma Hrod to this ftWn sumbld ref rem*d in the <br />Auoust 1999 State Engir*w GWd*W for Lining Criteria for Gravel Pb (1999 SEO Guidelines). <br />Meeting the deslpn sUndard requires that 911 VA%r !allows and outflows for the Ilner pedn** <br />enclosed area must 6 accounted for on a monthly basis. <br />With this linter approval, the Kirby- Dershan Reservoir, may be used to store water in ac mdance with <br />the 1999 SEO Guidelines. Prior to Wily use of this site, the owner or operator will need to c oordirtabe <br />with the District; 2 Water Commissioner, to review opergIlons and accounting. <br />Please contact me at the number below If you have any Questions. <br />Slncerely, _ <br />M. Hemandeg F <br />Water Resource Engineer <br />ec: 86 Sdmdder, Acting DM" 2 Water Commtssbner <br />Joanna Wil SM, Denver SEO <br />WDID He (0203017, 0203426, 0203386) <br />Water Division 1 • Greeley <br />810"Street, Suite 200 - Greeley, CO 80631 • Phone: 970 - 352-8712 • Pax: 970 -392 -I816 <br />www- water- date,eo.us <br />