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PSH WHE <br />M-1994-027 TR02 <br />J Annual Fee/Report: CW <br />I/ No Violations <br />October 9, 2017 <br />RECEIVED <br />OCT 13 2017 <br />DM510N OF RECLAMATION <br />MINING AND 8AFITY <br />Mr. Peter Hays <br />Environmental Protection Specialist <br />Division of Reclamation, Mining and Safety <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203 <br />Re: Permit No. M-1994-027 — Longmont Operation <br />Technical Revision Request — Mine Phasing Plan <br />Dear Mr. Hays: <br />AGGREGATE <br />INDUSTRIES <br />In order to more accurately reflect the current mining plan for the Longmont operation on the TuII <br />property, Aggregate Industries (AI) submits this letter and the documents referenced herein as a technical <br />revision to the mine plan. A check in the amount of $216 is also enclosed for the required technical <br />revision fee. <br />Mine Plan Revision <br />Phases of mining of the Longmont Operation will be progressing in a different sequence than what is set <br />forth in the most recent technical revision to the currently approved mine plan. <br />Mining commenced in the northwest area of the originally approved Phase Two Mining area and is <br />progressing generally to the south and east. Based on this progression of mining and a re-evaluation of <br />sand and gravel reserves on the site, Al recently developed a revised phasing plan. Mining will progress <br />from previously disturbed areas through blocks A through F in the following order: A, B, E, D, C, F as <br />noted on the enclosed Revised Phasing Plan, 07JUL2017. <br />If you have any questions or require additional information, please contact me at (970) 396-5252 or at <br />connie.davis(a—,aerTregate-us.com. <br />Very truly yours, <br />Zoj.,-' <br />Connie N. Davis <br />Land Manager <br />Enclosures <br />Aggregate Industries <br />West Central Region, Inc. <br />1687 Cole Boulevard, Suite 300 <br />Golden, CO 80401 <br />Telephone: 303-985-1070 An Equal Opportunity Employer <br />