2011-01-20_REVISION - M1983013 (5)

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,LAFARGE/ p AGGREGATES & CONCRETE JAN 2 4 2011 January 18, 2011 "Aliem ?,? snsi Division of Reclamation, Mining and Safety Attn: Travis Marshall 101 South 3rd Street, Room 301 Grand Junction, CO 81501 Dear Mr. Marshall, ?I?M, SSS RECEIVE JAN 20 201 GRAND JUN-1 ",;,,; Lp OFFICE RECLAMATION; 18M10INN & SAFETY 1-1 Please accept this letter as Lafarge's response and request for a Technical Revision as. outlined in the inspection report dated November 26, 2010 for the Lat am - ur e rt i e Number M-1983- 013). Lafarge proposes a multi layered control plan to manage the site. Below you will find a chart with the various common weed types found on this site and the planned treatment methods. Lafarge reserves the right to select herbicides that will most effectively treat the specified weeds as needed. Lafarge will do monitoring of the site at a minimum of quarterly to ensure that weed control methods are effectively being applied and followed per this plan. Any unique situations that occur in the field will be addressed at that time in following this plan as closely as possible for the situation. All applications of mowing and herbicide will be done with a 4-wheeler or hand sprayer depending on the location and access to the treatment area. These applications will be applied per the schedule below, to address any regrowth or new growth on the site. This schedule will continue until the weeds below are no longer a problem at the site. Weed Type Cutting Controls Other Controls Russian Olive This plant will be primarily Herbicides will be applied to all treated through cutting cut stumps to ensure regrowth will during the spring. not occur. Additional spraying Additional cutting will will be done for any new growth occur in the fall for any in the area. growth that was not eradicated during the initial treatment. Tamerisk This plant will be primarily Herbicides will be applied to all treated through cutting cut stumps to ensure regrowth will during the spring. not occur. Additional spraying Additional cutting will will be done for any new growth occur in the fall for any in the area. growth that was not eradicated during the initial treatment. LAFARGE WEST, INC. - Aggregate & Concrete 10170 Church Ranch Way, Suite 200, Westminster, Colorado 80021 Telephone: (303) 657-4000 Facsimile: (303) 657-4037