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A <br />April 22, 201.1 <br />RECEIVE,) <br />APR 2 7 2, <br />Division of Reclamation, <br />Mining & Safety <br />Mr. Tony Waldron 411- A=?L <br />Division of Reclamation, Mining and Safety vQAGG REGATE <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203 INDUSTRIES <br />,/' <br />Re: 6-1994-093 - Dahlia North Resources Pit - Groundwater Exposure/Bonding Status <br />:Dear Mr. Waldron: <br />In response to your letter of April 30, 2010 regarding mining operations with exposed ground <br />water, Mike Refer and I met with you last Thursday, April 14 to discuss the status of Aggregate <br />Industries-WCR, Inc.'s (AI) compliance with reclamation and bonding requirements relative to <br />exposed groundwater at its Colorado sand and gravel mining operations. We appreciated your <br />time and assistance in addressing this matter. <br />As a follow-up to our meeting, this letter is provided to the Division for its records with specific <br />regard to the status of the above-referenced permit and your acknowledgement that it is in <br />compliance with reclamation and bonding requirements for the following reason(s): <br />The Division holds a financial warranty for installation of a slurry wall that meets the <br />Division of Water Resources (DWR) requirements for preventing ground water exposure. <br />An application for a court approved water augmentation plan for exposed groundwater <br />has been filed under Case No. 2007CW1.98. <br />We would note that the Division previously released the reservoir area at Dahlia North following <br />DWR approval of the slurry wall; however, the associated bond reduction has not been processed. <br />It is our understanding that no further action is required of Al at this time; however, please advise <br />us if you have any questions or require additional information. <br />Very truly yours, <br />z,004z.r ;v- egae"l <br />Connie N. Davis <br />Land Advisor <br />cc: Ioana Comaniciu, Division of Water Resources <br />Aggregate Industries <br />West Central Region, Inc. <br />1707 Cole Blvd., Suite 100 <br />Golden, CO 80401 <br />Telephone: 303-985-1070 An Equal Opportunity Employer