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11-19:' <br />DEPARTMENT OF NATURAL RESOURCES <br />DIVISION OF 'WATER RESOURCES <br />Mr. David Heintz, E.I. <br />Bishop -Brogden Associates <br />333 West Hampden Ave., Ste 1050 <br />Englewood, CO 80110 <br />John W. Hickenlooper <br />Governor <br />Mike King <br />Executive Director <br />May 6, 2015 Dick Wolfe, P.E. <br />Direclor/Slate Engineer <br />Re: Duckworth Substitute Water Supply Plan (WDID 0602525) <br />Duckworth Pit, DRMS Permit No. M-2003-091 (WDID 0603005) RECEIVED <br />Section 35, T1 S, R67W, 6`h P.M. <br />Water Division 1, Water Districts 5 and 6, Adams County "KAY 2015 <br />Approval Period: August 1, 2014 through July 31, 2015. '10 <br />' D'WS10" OFREC <br />Contact phone number for Mr. Heintz: 303.806-8952MAI't6Ai, <br />D��A�1D SAFETY <br />Dear Mr. Heintz: <br />We have reviewed your letter dated August 1, 2014 and the additional information <br />received on April 10, 2015 requesting a substitute water supply plan ("SWSP") in accordance <br />with S 37-90-137(11), C.R.S., to cover depletions caused by mining operations at the Duckworth <br />Pit operated by Martin Marietta Materials ("MMM" or "Applicant") along Boulder Creek. The <br />required fee of $257.00 for the renewal of this substitute supply plan has been submitted <br />(receipt no. 3666011). The SWSP was originally approved on July 20, 2005, and was most <br />recently renewed on January 27, 2014. <br />This SWSP supersedes and replaces the previous SWSP, which was approved through <br />October 31, 2014. <br />Plan Operation <br />Duckworth Pit is located in Section 16, Township 2 North, Range 68 West of the 6th <br />P.M. Mining operations commenced in November 2012 and are projected to occur in two <br />phases over a period of four to five years. As of August 2014, Phase 1 area (approximately 12 <br />acres) and the north half of Phase 2 area (approximately 17 acres) have been lined with a <br />compacted clay liner. It is anticipated that from August 2014 through December 2014, the <br />remaining 15 acres (south half of the Phase 2 area) will be fully mined, therefore mining is <br />expected to be completed on the south half of the Phase 2 area by December 2014 and the <br />liner of this area by March 2015. Dewatering on the south half of Phase 2 will occur to allow <br />for dry mining of this area. Operations that will consume water include exposing ground <br />water, dewatering, mining and removal of product, and dust control. Replacement water will <br />come from water stored in priority in Heaton Reservoir, dewatering credits from the <br />Duckworth pit, changed Rural Ditch shares and excess accretions from MMM's South Platte <br />Combined SWSP (WDID 0202581). <br />Office of the State Engineer <br />1313 Sherman Street, Suite 818 • Denver, CO 80203 • Phone: 303-866-3581 • Fax: 303-866-3589 <br />www.water.sta te, co.us <br />