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t�ENT OF,,, <br /> QPQ _ 'y� United States Department of the Interior ° <br /> 7 � <br /> BUREAU OF LAND MANAGEMENT <br /> �4RCH 3 �9s9 COLORADO RIVER VALLEY FIELD OFFICE <br /> 2300 River Frontage Road R�Dent <br /> Silt, CO 81652 <br /> www.blm.gov/co/st/en/fo/crvfo.html SEP 17?0 <br /> September 11,2018 D'��1tj0,r <br /> In Reply Refer To: AND �DIV <br /> COC-066169 (CON04000) <br /> CERTIFIED MAIL—7018 1 130 0001 5766 8417 <br /> RETURN RECEIPT REQUESTED <br /> Mr. Matt Welte <br /> Mayne Block& Stone Company <br /> P.O. Box 533 <br /> Pueblo,CO 81002 <br /> Dear Mr. Welte: <br /> On June 14,the BLM Colorado River Valley Field Office (CRVFO) Geologist inspected the Dotsero <br /> Quarry and cited weed control as an issue.The Mineral Materials Compliance inspection report required <br /> the following corrective action: <br /> Mayne Block and Stone must perform noxious and invasive weed eradication within the permit <br /> area. If the operator elects to treat the permit area with herbicide,Mayne Block and Stone or its <br /> contractor must submit a Pesticide Use Proposal and receive approval prior to conducting weed <br /> spraying activities. Reseeding and soil amendments may be needed in the future if revegetation is <br /> unsuccessful. <br /> As of the current date,the Colorado River Valley Field Office has not been contacted regarding a <br /> Pesticide Use Plan for Dotsero Quarry and no weed treatment has occurred at the site. <br /> Per the Conditions on pages 6-7 of C0140-2008-114 CX Remarks/Mitigation as incorporated into the <br /> stipulations for contract COC-066169: <br /> "Following completion of extraction operations in a particular area,the applicant would reclaim <br /> disturbed areas in accordance with the existing mining and reclamation plan and to the <br /> satisfaction of the State of Colorado Division of Reclamation, Mining and Safety and the Bureau <br /> of Land Management Glenwood Springs Field Office. These activities shall occur the first fall <br /> following completion of mining extraction. <br /> Your approved Dotsero Quarry reclamation plan states: <br /> "Revegetation will be carries out in such a way to establish a diverse, effective and long-lasting <br /> vegetative cover that is capable of self-regeneration without continued dependence on irrigation, <br /> soil amendments, or fertilizers. The idea is to create a vegetative cover that is at least equal in <br /> extent to the cover of the natural vegetation prior to mining." <br /> 1 <br />