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<br />' F. Description of animal impacts on revegetation: No significant animal impacts <br />were noted. Pronghorn do graze the older revegetation, but the pronghorn population <br />is small relative to the amount of land that produces food for them. Therefore, any <br />impacts from pronghorn are negligible. <br />' WEED STATUS: <br />1. General overview of weed status on site: Weeds remain a serious problem throughout <br />' this site and that is not expected to change anytime soon. The weed populations are deeply <br />entrenched on this land and have become that way simply because of the long life they have <br />had here and the continued presence of suitable disturbed habitat to enhance their persistence. <br />A. Status of species that have been present in the past: Spurge density has actually <br />' decreased some in the past year due to robust growth of grasses and the competition <br />they provide. However, the 2008 growing season has been very dry with little grass <br />growth and generally poor growth of even spurge. It is not known whether spurge will <br />' once again gain back the land it lost to grass last year. Spurge growth, for the most <br />part, is restricted to more moist habitats in 2008. If the weather turns wetter, that may <br />cause a shift of spurge growth to a more aggressive character. As' of the date of this <br />' report, nothing is growing well on the site. Tamarix control begun two years ago has <br />been highly successful and some additional cleanup will be done'this year along with <br />monitoring to see that it does not come back or spread downstream. At this point it is <br />' estimated there are about 50 plants scattered about the area. These appear to be mostly <br />ones that were previously missed. Very few, if any, new plants have appeared. <br />' B. New species: No new weed species have been noted. That is not surprising as <br />growing conditions are similar to 2002 at the height of that severe drought. <br />' 2. Weed status on lessee responsibility lands: Tamarix has mostly been eradicated with final <br />cleanup to occur this year. This will be followed by monitoring to make sure it does not come <br />back. Further spurge control will be done in the moist areas where vigorous growth is still <br />' occurring. Any appearance of spurge in newly seeded areas will receive treatment after the <br />new seeding has become established. Treatment prior to establishment usually will harm <br />native grasses, creating a persistent stunted grass growth. <br />i <br />' OTHER INFORMATION THAT MIGHT BE USEFUL FOR FUTURE REFERENCE: <br />Nothing of special note. <br />' DESCRIPTION OF UNUSUAL CONDITIONS OR EVENTS: None, other than drought <br />conditions being present throughout the site. <br />status report for 2UU7 (July 15, 2007) <br />?I <br />Page 9 of 10