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~~ ~TA'TE ~~ ~,- OF COLORADO OFFICE OF THE STATE ENGINEER Division of Water Resources Department of Natural Resources 1313 Sherman Street. Room 818 RECEIl/ED Denver, Colorado 80203 yy r~ q 7 FAX (3030866-3589 t rIAR-2 ~ 2001 March 21, 2007 - ,Ni(rrer ky-~y~~~ +.~6 ; http:/;www. water. state.co.us Steve N u en Division of Reclamation. 9 Y ~ Mining and Safety Clear Water Solutions 13228 Shadow Canyon Trail , , Broomfield, CO 80020 '/ ,// RE: Hokestra Pit Substitute Watet'Supply Plan, M-80-149 Section Z, T2N, R68W and Section 35, T3N, R68W, 6`h P.M...-. ;-. , Water Division 1, Water District 5 Approval Period: April 1, 2007 through March 31, 2008 Contact phone number for Mr. Steve Nguyen: 303-464-8697 Dear Mr. Nguyen: Bill Ritter, Jr. Gavemor Hams D. Sherman Executive Director Hal 0. Simpson, P E. State Engineer We have received your letter of December 28, 2006, 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"j. The required fee of $257.00 for the renewal of this substitute supply plan has been submitted (receipt no. 3612011). The original supply plan was approved on December 3, 2001 and the most recent renewal was approved on September 26, 2005. Plan Operation This plan seeks to replace depletions resulting from mining at the Hokestra gravel pit, operated by Weld County ("County"). The depletions that result from the mining operation are evaporation, water lost in mined product, irrigation and dust suppression. The proposed replacement sources are 3.75 Rural Ditch shares owned by Weld County, storage of excess credits in Varra's 112 Pit and fully consumable water leased from the St. Vrain & Left Hand Water Conservancy District ("SVLH"). The County is currently mining the NW cell as shown in Figure 1 and will line the cell in 2007. The cell will remain dewatered until it is lined. Once mining in the NW cell is completed the County will dewater and mine the SE cell (shown as the un-mined 9.9 acre cell in Figure 1). DEPLETIONS Mining is occurring at the Hokestra site in the northwest cell adjacent to both I-25 and the St. Vrain River. According to the information provided by the applicant, the County will continue to dewater the cell during the mining process. Currently 70.9 acres of surface acreage is exposed at the Hokestra site, including 70.1 acres outside of the currently mined area and approximately 0.8 acres exposed in the dewatering trenches. Of the 70.9 acres of exposed surface, 56.8 acres were exposed after December 31, 1980 and 14.1 acres were exposed prior to January 1, 1981.