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DEPARTMENT OF NATURAL RESOURCES <br />DIVISION OF WATER RESOURCES <br />John W. Hickenlooper <br />Governor <br />==rector <br />April 18, 2011 Dick Wolfe, P.E. <br />Director/State Engineer <br />Mr. Andy Rodriguez, P.E. <br />Civil Resources, LLC <br />323 Fifth Street <br />P.O. Box 680 <br />Frederick, CO 80530 <br />Re: Baseline Resoyrce Aggregate Mine, S,ubst'tute Water Supply Plan (WDID 0202583) <br />DRMS File No. M-1997-058, WDID 0203017 <br />Section 36, T1 N, R67W, 6t' P.M.. <br />Water Division 1, Water District 2, Adams County <br />Approval Period: January 1, 2011 through December 31, 2011 <br />Contact phone number for Mr. Andy Rodriguez: 303-833-1416 <br />Dear Mr. Rodriguez: <br />We have reviewed your letter dated March 7, 2011, requesting renewal of the above <br />referenced substitute water supply plan ("SWSP") to cover depletions caused by an existing gravel <br />mining operation operated by Hall-Irwin ("Applicant"). The required fee of $257.00 for the renewal <br />of this substitute water supply plan has been submitted (receipt no. 3649418). The original plan <br />was approved on May 21, 2001 and was most recently approved on December 22, 2009 for <br />operations through December 31, 2010. <br />Plan Operation <br />The Baseline Resources mining area is split into two adjacent sites. The east site is <br />encompassed by an existing slurry wall, and is known as Robert W. Walker Reservoir (WDID <br />0203358), while the west site is located outside of the wall. Your letter indicates that the area to <br />be mined during 2011 will be in the western portion of the site, outside of the slurry wall. The <br />applicant will dewater the active mining area to allow for dry mining. The removed water will be <br />conveyed through dewatering trenches to 7.18 acres of settling ponds. Operations at the site <br />are expected to occur during nine months of the year from March through November. <br />An alluvial well has been constructed to provide water for concrete batching and dust <br />suppression. This well is currently permitted under well permit no. 66961-F (WDID 0210141) <br />and is located outside the boundaries of the slurry wall. In addition to providing 1.66 acre-feet <br />for dust control and 11.29 acre-feet for concrete batching at this site, the well will provide 1.67 <br />acre-feet of water for dust control at the adjacent Parker-Dersham Resource site. <br />2.1 <br />In accordance with the letter dated April 30, 2010 (copy attached) from the <br />Colorado Division of Reclamation, Mining, and Safety ("DRMS"), all sand and gravel <br />mining operators must coTr' y with the requirements of the Colorado Reclamation Act <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 ??APR 19 7 <br />Division oi' m";wf. i.,.- .. <br />Mining and Safety