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September 16, 2015 <br />RECEIVED <br />SEP 16 2015 <br />Mr. Tyler O'Donnell DIVISION OF RECLAMATION <br />Division of Reclamation Mining and Safety MINING AND SAFETY <br />1313 Sherman Street, Room 215 AL <br />Denver, CO 80203 <br />Tyler. Odonnell@state. co. us AGGREGATE <br />Re: Permit No. M-1999-034 —Cooley Reservoir and Fulton Wildlife Area INDUSTRIES <br />TR -04 Second Adequacy Review Response <br />Dear Tyler: <br />Aggregate Industries (AI) submits this letter in response to the Division's second <br />adequacy review of TR -04 regarding weed control at the above -referenced operation. As <br />requested by the Division in said review, Al commits to mowing all noxious weeds at a <br />minimum of once in the spring and once in the fall, prior to seed set, with the spring <br />mowing to occur prior to June 30 of each year. <br />As we discussed this morning, the above mowing commitment is applicable to the City of <br />Thornton reservoir site west of the South Platte River. Weed control east of the River <br />will continue as discussed in AI's September 3, 2015 response to the Division's first <br />adequacy review of TR -04, incorporating either or both mechanical and chemical <br />controls appropriate to the area being treated. <br />Please note that that AI's September 3 response apparently inaccurately referred to the <br />current TR as TR -054. I had an electronic copy of the Division's initial adequacy review <br />that showed the TR -054 reference so that is what I had used; however, the hard copy of <br />that review did show the current revision number to be TR -04. <br />As we also discussed this morning, this response is being provided to you via e-mail <br />only. Please advise me if the Division determines that a hard copy is to be mailed or has <br />any other questions or concerns to be addressed to facilitate approval of TR -04. <br />Very truly yours, <br />/an"xci %J . J-�, <br />Connie N. Davis <br />Land Advisor <br />Enclosures <br />cc: Walt Jenkins (wait Jenkins@cityofthornton.net) <br />Aggregate Industries <br />West Central Region, Inc. <br />1687 Cole Boulevard, Suite 300 <br />Golden, CO 80401 <br />Telephone: 303-985-1070 <br />An Equal Opportunity Employer <br />