2009-04-01_HYDROLOGY - M1980149 (2)

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DEPARTMENT OF NATURAL RESOURCES DIVISION OF WATER RESOURCES March 25, 2009 Ms. Rachel Kullman, P.E. ?p Clear Water Solutions 8010 S. County Road 5, Suite 105 Windsor, CO 80528 / v ? RE: Hokestra Pit Substitute Water Supply Plan, DRMS No. M-80-149 Section 2, T2N, R68W and Section 35, T3N, R68W, 6th P.M. Water Division 1, Water District 5 Approval Period: April 1, 2009 through March 31, 2010 Contact phone number for Ms. Rachel Kullman: 970-223-3706 Dear Ms. Kullman: Bill Ritter, Jr. Governor Harris D. Sherman Executive Director Dick Wolfe, P.E. Director RECEIVE[ APR 01 ZUU1 Division of nouwuauot+, Mining and Safety We have received your letter of December 18, 2008, requesting a substitute water supply plan for the above referenced gravel pit, to cover depletions caused by the existing Hokestra gravel pit, operated by Weld County ("County"). The required fee of $257.00 for the renewal of this substitute supply plan has been submitted (receipt no. 3635933). The original supply plan was approved on December 3, 2001 and the most recent renewal was approved on May 14, 2008. Plan Operation This plan seeks to replace depletions resulting from mining at the Hokestra gravel pit, operated by Weld County ("County"). The depletions that results from the mining operation during this SWSP period are evaporation from the exposed ground water and irrigation at Weld County's Southwest Service Center. Previous SWSP's also included depletions associated with water lost with the mined product and for dust control. The County does not intend to mine Hokestra Pit during this SWSP period, as such there will be no consumptive use of groundwater associated with the water lost with the mined product and dust control. The proposed replacement sources are 3.75 Rural Ditch shares owned by Weld County, storage of excess credits in Varra's 112 Pit, fully consumable water leased from the St. Wain & Left Hand Water Conservancy District ("SVLH"), and water leased from the City of Greeley ("Greeley"). DEPLETIONS The County has completed mining in all pits, except the 9.9-acre and 20.9-acre cells located in the center of the gravel pit site (Figure 1). Mining operations during the 2008 SWSP occurred exclusively in the 9.9-acre cell, but will not be mined further during the period of this plan. Mining operations in the 20.9-acre cell is not anticipated to begin for several years. 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