Laserfiche WebLink
y${p®'q ` • M O L mil} R N A ® W <br /> Division of Water Resources <br /> Gepar;ment of Natural Resources <br /> 1313 Sherman Street, Room 821 <br /> Denver, CO 80203 <br /> March 12, 2015 <br /> DEREK FOSTER <br /> DEERE It AULT CONSULTANTS, INC. <br /> 600 S. AIRPORT ROAD, BUILDING A, SUITE 205 <br /> LONGMONT, CO 80503 <br /> TRANSMISSION VIA EMAIL: Derek.Foster@deereault.com <br /> RE: SLURRY WALL LINER APPROVAL <br /> NISSEN STORAGE RESERVOIR(WDID 0203928) <br /> S12-T5N-R65W, WATER DIVISION 1, WATER DISTRICT 2 <br /> Dear Mr. Foster: <br /> The purpose of this letter is to approve the lining of the Nissen Storase Reservoir. This reservoir is located <br /> in the 5112 of Section 12, Township 5 North, Range 65 West of the 6 P.M., and was originally a part of the <br /> Nissen Pit (DRMS M2003-001). The reservoir was previously tested and approved on April 27, 2007 as <br /> meeting the design standard. The slurry wall of the reservoir was washed out on the north side of the <br /> reservoir when the South Platte River flooded in September 2013. Repair work to the slurry wall liner after <br /> the flooding in 2013 was performed during 2014. The repair section was excavated and repaired with <br /> bentonite clayey soils compacted in-place. The purpose of this test was to analyze the liner repair and <br /> re-verify the previously approved liner once again met the design or performance standard. The test <br /> duration was modified to 64-days. The liner test commenced November 14, 2014 and concluded on <br /> January 16, 2015. A site inspection was performed by our office on December 4, 2014 to review site <br /> conditions and preliminary leak test data. <br /> Your report dated February 27, 2015 provides the liner summary and the 64-day leak test result. The test <br /> data provided indicates that after the repair the reservoir has been lined to the performance standard <br /> referenced in the August 1999 State Engineer Guidelines for Lining Criteria for Gravel Pits (1999 SEO <br /> Guidelines). Meeting the performance standard requires that during reservoir operations all water <br /> inflows and outflows for the liner perimeter enclosed area be accounted for on a weekly basis. <br /> With this liner approval, the Nissen Storage Reservoir is once again classified as a lined reservoir in <br /> accordance with the 1999 SEO Guidelines. Water shall not be impounded in the reservoir except pursuant <br /> to lawful diversions allowed by statute or decree. At all other times, all inflow of water into the reservoir <br /> from any source, including precipitation and ground water inflows shall be removed to prevent illegal <br /> storage of water. Prior to ANY use of this site, the owner or operator will need to coordinate with William <br /> Schneider, District 2 Water Commissioner, to review operations, measurement structures, and accounting. <br /> Please contact me at the number below if you have any questions. <br /> coy, <br /> 't�►4 <br /> loana Comaniciu, P.E. <br /> Water Resource Engineer <br /> ec: William Schneider, District 2 Water Commissioner (William.Schneider@state.co.us) <br /> Louis Flink, Diversion Records Coordinator (Louis.Flink@state.co.us) <br /> WDID Fite (0203928) <br /> 1313 Sherman Street, Room 821, Denver, CO 80203 P 301866.3581 F 303.866.3585 www.water.state.co.us <br /> r� <br />