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M�; F�COl <br /> n/Y" ��; � DEPARTMENT OF NATURAL RESOURCES <br /> VV"" y� g DIVISION OF WATER RESOURCES <br /> John W.Hickenlooper <br /> ?F'j876 Governor <br /> Mike King <br /> /5"Une 17, 2014 Executive Director <br /> Dick Wolfe,P.E. <br /> rank Healy Director/State Engineer <br /> Helton &Williamsen <br /> 384 Inverness Parkway, Suite 144 <br /> Englewood, CO 80112-5822 r-� <br /> RE: Lamar East Pit M-77�572 Substitute Water Supply Plan <br /> Section 29,Township 22S, Range 46W <br /> Water Division 2,Water Districts 12, 17 & 67 <br /> Plan ID 116 <br /> Plan Period: June 1, 2014 through May 31, 2015 <br /> Phone number for Mr. Healy: 303-792-2161; fhealy@helton-williamsen.com <br /> Dear Mr. Healy: <br /> We have reviewed your April 24, 2014 letter requesting renewal of the substitute water supply <br /> plan J"SWSP")for the Lamar East Pit, which has been transferred from the previous owner, Valco, Inc., <br /> to the City of Lamar("Lamar"). The Lamar East Gravel Pit has been renamed as the Lamar North <br /> Gateway Park Pond Nos. 1, 2 and 3, and will be referred to as such with the renewal of this SWSP. The <br /> requiired $257 fee has been paid (receipt no. 3664658). <br /> Planiof Operation <br /> Mining at this site was completed by Valco. There is a total water surface of 30.2 acres at the <br /> site, which was verified by survey on June 29, 2012. A comparison was made of the first substitute <br /> supp y plan request (which indicated that on December 1, 1980, 13.2 acres of pond area existed), versus <br /> the present pond area of 30.2 acres, it was determined that 7.0 acres qualified as pre-1981 exposure <br /> and 3.2 of which were exposed post 1981. The pre-1981 exposed water surface must be in the same <br /> location as the post-1981 exposed water surface in order to claim the exemption. The calculated <br /> evaporation requiring augmentation is 95.36 acre-feet (see Table 1, attached). <br /> Pre-1981 Post-1981 <br /> Pit Well Permit No. Well ID Total Exposure Exposure Exposure <br /> acres acres <br /> Lamar East 52184-F 6706363 30.2 7.0 23.2 <br /> Depletions <br /> The three ponds are located at an average distance of 76.7 feet from the Arkansas River. You <br /> have performed a Glover analysis using the following parameters: <br /> Transmissivity 200,000 gpd/ft <br /> Specific yield 0.2 <br /> Distance 76.7 feet from the river <br /> Office of the State Engineer <br /> 1313 Sherman Street,Suite 818•Denver,CO 80203• Phone:303-866-3581 •Fax:303-866-3589 <br /> http://water.state.co.us <br />