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<br />'~ 1 <br />LJ <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br />1 <br /> <br /> <br />1 <br />J <br /> <br /> <br /> <br />Climax Molybdenum Mine <br />2003 Noxious & Targeted Weed Management Report <br />Each site's sub-rankings will be added to determine its overall treatment priority ranking <br />(from 1 to 9). The treatment priority ranking of each of these sites can be reviewed in <br />Table 2 of the Climax Mine 1999 Noxious and Tazgeted Weed Survey. Weed control <br />and eradication efforts targeted and prioritized infested sites based on their treatment <br />priority ranking. <br />2003 Weed Management Activities <br />Weed control management activities at Climax were performed in three field session <br />occurring from July 15 to July 17, 2003, August 19 to August 21, 2003 and August 27, <br />2003. During the summer of 2003 approximately 141 hours were spent applying <br />chemical methods to weed populations identified during the weed survey. Management <br />activities during 2003 used the infestation site ranking from the 1999 Weed Survey to <br />prioritize application of weed control measures. <br />Application of chemical herbicides was the primary weed control method used in 2003. <br />Tordon 22K and Amine 2,4-D were mixed and applied directly to individual weeds or <br />weed populations whenever possible. The amount of Tordon 22K and Amine 2,4-D <br />herbicide applied in 2003 was 267 ounces and 1,067 ounces respectively in 800 gallons <br />of water. LI-700 (267 ounces) surfactant was added to the Tordon/2,4-D herbicide mix to <br />facilitate adhesion and expedite drying following application. Enhancing adhesion and <br />accelerating drying serves to increase herbicide effectiveness. Blue dye (200 ounces) was <br />also added to the herbicide mixture in order to effectively track areas where herbicide had <br />been applied. In cases where weed populations were extensive,or widespread, herbicide <br />was broadcast sprayed on the vegetation community. $roadcast application of herbicide <br />was performed in a manner to minimize or prevent over spray or drift onto desirable plant <br />species. Labels of the herbicides used on the project azea are contained in Appendix A. <br />Weed Control Management Recommendations <br />During 2003 weed management activities HMI weed crews visually observed a continued <br />decrease in oxeye daisy populations in both the Eagle Pazk and Robinson Dam drainages. <br />While oxeye daisy populations were concentrated in these areas during the 1999 weed <br />Habitat Management, Inc. 4 3/22/2004 <br />1 <br />