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402- <br />April 22, 2011 <br />Mr. Tony Waldron <br />Division of Reclamation, Mining and Safety <br />1313 Sherman Street, Room 215 <br />9 <br />.AGGREGATE <br />INDUSTRIES <br />Denver,' CO 80203 <br />Re: `M-2004-044 - Tucson South Resource - 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 />Al has not commenced mining of this site and the Division currently holds a reduced <br />bond to reflect the undisturbed status. The DRMS approved permit for this site <br />anticipates installation of a slurry wall, and prior to commencement of mining, Al will <br />post the appropriate financial warranty for such slurry wall. <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 />C ?. C? <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 />RECEIVED <br />Reclamation, <br />?ADiaisMinltlg & Sac <br />T? <br />Telephone: 303-985-1070 An Equal Opportunity Employer