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r^ <br />August 15, 2015 <br />Mr. Tyler O'Donnell <br />Division of Reclamation Mining and Safety <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203 1 <br />Re: Permit Number M-1994-093 — Dahlia North Resources <br />Site Mowing Status and Technical Revision Request <br />Dear Tyler: <br />RECEIVED <br />fl_�j 1 12015 <br />DIVISION OF RECLAMATION, <br />MINING AND SAFETY <br />-AGGREGATE <br />INDUSTRIES <br />Aggregate Industries (AI) submits this letter together with the enclosed photos in <br />response to the Division's report of its June 2, 2015 monitoring inspection of the above - <br />referenced operation. The photos were taken on August 13, 2015, generally in the same <br />areas as the Division's weed concern photos. Areas outside the reservoir on both sides of <br />the reservoir road, as well as the reservoir shoreline between slopes and water line were <br />mowed. As the reservoir is a City of Thornton water source, mechanical means of weed <br />control are required by the City as opposed to chemical control that good impact water <br />quality standards for their reservoir. <br />The Division required that any revision to the exiting weed control plan should be <br />updated in consultation with the county extension agency or weed control district. The <br />Dahlia North site is located within the City limits of Thornton and will be managed in <br />accordance with the City's weed control code (Sec. 38-444. Weeds and brush), a copy of <br />which is enclosed. Furthermore, as the Dahlia North site is a reservoir owned and <br />operated by City of Thornton, the weed control plan will conform with the City's Water <br />Resources and Public Works requirements for weed control which does not provide for <br />chemical control. Therefore, this technical revision request is to update the Dahlia North <br />weed control plan in accordance with City of Thornton code and directives. Enclosed is a <br />check in the amount of $216.00 for the required technical revision fee. <br />Very truly yours, <br />Connie N. Davis <br />Land Advisor <br />Enclosures <br />✓ Compliance <br />✓ NO Violations <br />Cc: Walt Jenkins, City of Thornton (via e-mail) <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 />