2012-01-20_HYDROLOGY - M1977036 - Laserfiche WebLink

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Dear Mr. Dains: Mr. Jared Dains, E.I. 1■pplegate Group, Inc. 1499 West 120 Ave., Suite 200 Denver, CO 80233 DEPARTMENT OF NATURAL RESOURCES DIVISION OF WATER RESOURCES January 11, 2011 Re: Greeley 35 Ave Substitute Wate Supply Plan (WDID 0302546) Greeley 35 Ave Pit, DRMS No.1977 -036 (WDID 0303022) Section 34 & 35, T6N, R66W, Sixth. P.M. Water Division 1, Water District 3, Weld County Approval Period: November 1, 2011 through October 31, 2012 Contact Phone Number for Mr. Jared Dains: 303 - 452 -6611 ati 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 RECEIVFn Division of Redd.:. Mining & biz +�• Your letter dated September 21, 2011, and supplemental information submitted December 27, 2011, requesting renewal of the above referenced substitute water supply plan ( "SWSP ") to cover depletions caused by an existing gravel mining operation has been reviewed. The required fee of $257 for the renewal of this SWSP has been submitted (receipt no. 3652416). The original SWSP was approved on February 12, 1992 and it was most recently approved in a letter dated November 23, 2010. SWSP Operations and Depletions The Greeley 35 Avenue Pit is located in Sections 34 and 35, Township 6 North, Range 66 West of the 6 P.M. Lafarge West Inc. ( "Lafarge ") was the operator of this gravel pit and was the original applicant for this SWSP renewal. Martin Marietta Materials ( "Marietta ") purchased this pit from Lafarge in November 2011 and are assuming all augmentation responsibilities including depletions resulting from past mining operations. The depletions that result from the mining operation at the Greeley 35 Avenue Pit are evaporation from exposed surface area, water lost in mined product, dust control and water used in concrete production. Marietta will replace all depletions during the period of this SWSP, using the Lafarge lease with the City of Greeley which Marietta acquired as a part of their November 2011 acquisition. The total exposed groundwater area at this site is 74.8 acres, of which 26.3 acres are considered post -1981 and require augmentation for its evaporation. According to the information from the previous plan, a total of 52 acres of groundwater was exposed within the Greeley 35 Avenue Pit reclamation permit boundary prior to January 1, 1981. Of the pre -1981 exposed areas, 3.5 acres are currently being dewatered and are not included in the 74.8 total acres of exposed groundwater at this site. The area exposed prior to 1981 is shown on the attached map. The credits for the pre -1981 area are tied to the location identified on the map and may not be re- allocated to other areas of ground water exposure within the