Laserfiche WebLink
~LAFARG E <br />NORTH AMERICA <br />Construction Materials <br />September 9, 2004 <br />Mr. Thomas Schreiner <br />Colorado Division of Minerals & Geology <br />1313 Sherman St., Room 215 <br />Denver, CO 80203 <br />RECEIiiEC <br />SEP i 02004 <br />Division of Minerals and Geology <br />' `~~ <br />RE: 351h Avenue Pit, MLRB Permit No. M-1977-036 Technical Revision Na t, G~deo ~ ~ <br />Mr. Schreiner, <br />Per your compliance letter of August 9, 2004, Lafazge West, Ina (Lafazge) is requesting a <br />Technical Revision (TR) to our permit for the 35`~ Avenue Pit located in Greeley, Colorado in <br />Weld County. The TR is in response to the Division's request for a weed control plan for <br />tamarisk including control methods to be implemented and a schedule for the when the various <br />control methods will be employed. <br />Lafarge is proposing use of the herbicides Arsenal and Habitat to control the tamarisk. Habitat <br />will be used in areas where spray will come in contact with water; it is approved for use in and <br />around standing and flowing water. The spraying will occur before the end of September, as the <br />herbicides are foliar applications and only effective while the plant has green leaves. Future <br />applications, if necessary, will occur during the late summer and/or eazly fall. For cost <br />effectiveness, the infected areas will be aerially sprayed via helicopter. The aerial spray will be <br />supplemented by hand spraying in areas of small or isolated infestation, and azeas neighboring <br />desired vegetation. <br />Lafazge has successfully treated other sites with the proposed actions and believes the TR meets <br />the Division's requests. Should you have any questions or need additional information, please do <br />not hesitate to contact me at 303-657-4421. <br />Best regards, <br />Suzanne Janzen <br />Land Specialist <br />LAFARGE NORTH AMERICA INC. -Lafarge Construction Materials <br />1400 West 64~ Avenue, Denver, Colorado 80221 <br />Telephone: (303) 657-4000 Facsimile: (303) 657-4037 <br />