2011-09-26_HYDROLOGY - M2002120 - Laserfiche WebLink

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Andy Rodriguez, P.E. doCivil Resources, LLC P.O. Box 680 Frederick, CO 80530 Dear Mr. Rodriguez: Plan Operation DEPARTMENT OF NATURAL RESOURCES DIVISION OF WATER RESOURCES September 26, 2011 Re: Bernhardt Pit, Substitute Water Supply Plan (WDID (y02528) Division of Reclamation Mining and Safety File No. 2002 -120 Sections 1 and 12, T4N, R67W, 6 P.M., Weld County Water Division 1, Water District 2 and 4 Approval Period: January 1, 2011 through December 31, 2011 Contact phone number for Mr. Andy Rodriguez: 303 - 833 -1416 Div i � a Rey; atio: We have received your letter dated March 7, 2011, requesting renewal of the above referenced substitute water supply plan to cover depletions caused by an existing gravel mining operation operated by Hall -Irwin ( "Applicant "). The required fee of $257.00 for the renewal of this substitute water supply plan ( "SWSP ") has been submitted (receipt no. 3643715). The original supply plan was approved January 14, 2004 and the plan was most recently renewed on February 22, 2010. This plan seeks to replace depletions resulting from mining operations at the Bernhardt pit. The depletions that result from the mining operation during this SWSP period are evaporation, concrete batching and dust suppression. The proposed replacement source is excess augmentation credits leased from the Town of Milliken ( "Milliken "). The leased water is excess augmentation credits from Milliken's decree, associated with consolidated case nos. 2002CW339 and 2005CW59. The mining site has been Tined with a bentonite slurry wall. That liner has not yet been approved by the Division Engineer therefore the depletions calculated for this plan assumes that the liner does not exist. An alluvial well has been constructed to provide water for concrete batching. This well was constructed under permit no. 60729 -F (WDID 0405678) and is located outside the boundaries of the existing slurry wall. The water withdrawn from the alluvial well is considered 100% consumptive. In accordance with the letter dated April 30, 2010 (copy attached) from the Colorado Division of Reclamation, Mining, and Safety ( "DRMS "), all sand and gravel mining operators must comply with the requirements of the Colorado Reclamation Act and the Mineral Rules and Regulations for the protection of water resources. The April 30, 2010 letter from DRMS requires that you provide information to DRMS to demonstrate you can replace long term injurious stream depletions that result from mining related exposure of ground water. The DRMS letter identifies four approaches to satisfy this requirement. If the information you are providing to ees <P26MO1 Office of the State Engineer 1313 Sherman Street, Suite 818 • Denver, CO 80203 • Phone: 303 - 866 -3581 • Fax: 303 - 866 -3589 www.water.state.co.us John W. Hickenlooper Governor Mike King Executive Director Dick Wolfe, P.E. Director /State Engineer