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LAFARGE <br />NORTH AMERICA <br />AGGREGATES, CONCRETE <br />& ASPHALT <br />September 22, 2006 <br />Tom Schreiner <br />Environmental Protection Specialist <br />Department of Natural Resources <br />Division of Reclamation, Mining and Safety <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203 <br />All G(7X~ <br />~Ep 2 5 2006 <br />rvlslon ofa d Safety n <br />Mining <br />SUBJECT: Final Adequacy Review Comments for North Bank Resources, Regular <br />112 Application Class: Permit, File No. M-2006-018 <br />Dear Tom Schreiner: <br />Lafarge submits this letter in response to the Final Adequacy Review Comments for <br />North Bank Pit, Regular 1 12 Application Class: Permit, File No. M-2006-018. Lafarge <br />will address the final comments in the same order they were posed. <br />6.4.4 Exhibit D- Minine Plan <br />4a. The 100-foot setback that Lafarge has committed to establishing from the nearest <br />point of excavation to the Colorado River is indeed from the top of the north bank of the <br />river. <br />5. The conveyor bridge and all above ground appurtenances finking North Bank <br />Resources to the current Mamm Creek operation will be removed once mining operations <br />cease on the north bank of the Colorado River. <br />6.4J Exhibit G -Water Information <br />18. Lafarge commits to providing the Division with a weed management plan within 90 <br />days of the Division approving the Regular 112 Application for the North Bank site. <br />The plan will include specific treatment methods/strategies for each of the fallowing <br />species that occur on the site: Tamarisx, Russian Olive, Field Bindweed, Canada Thistle, <br />and knapweed species. The plan will be submitted as a Technical Revision. <br /> <br />WESTERN U.S. REGION <br />10170 Church Ranch Way, Suite 200, Westminster, CO 80021 <br />Office: 303-657-4000 <br />Web: www.lafargenorthamerica.com <br />