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quantitative sample records prior to this yeaz (1998 reseeded or interseeded azeas, 1999, <br />2000, and 2002 reclamation areas) total vegetation cover increased from the 2006 growing <br />season. The 1998 azeas increased in mean cover by 24 percent, the 1999 reclamation areas <br />mean cover increased 28 percent, the 2000 reclamation azeas mean cover increased 23 <br />percent, the mean cover in the 2002 reclamation azeas increased 14 percent, and the 2003 <br />reclamation areas increased 65 percent from the cover measured in 2006. These changes can <br />be attributed to the precipitation distribution described above. <br />Table 10 provides a comparison of the relative cover of species encountered during cover <br />sampling in the reclamation azeas. The following depicts the significant changes in relative <br />cover for selected species in the 1998, 1999, and 2000 azeas (those reclamation areas with a <br />sampling record of three or more years). <br />• <br />Reclamation <br />Area plant Species 2006-2007 <br />Chan a +/- <br />1998 Andro 0 on hallii 1167 <br /> Ambrosia silostach a 538 <br /> Sti a viridula 384 <br /> Helianthus annuus 340 <br /> Bromus tectorum 243 <br /> Si brium altissimum 190 <br /> Bouteloua acilis 170 <br /> Calamovil a lon ' olia -41 <br /> Kochia sco aria -83 <br /> <br />1999 Andro 0 on hallii 432 <br /> Bromus tectorum 390 <br /> Calamovil a lon ' olia 150 <br /> Helianthus annuus -13 <br /> Kochia sco aria -59 <br /> <br />2000 Andro 0 on erardii 720 <br /> Si brium altissimum 400 <br /> Bromus tectorum 350 <br /> Helianthus annuus 321 <br /> Calamovil a lon ' olia 198 <br /> Ambrosia silostac a 139 <br /> Andro 0 on hallii -44 <br /> Panicum vir atum -72 <br /> Kochia sco aria -88 <br /> Bouteloua acilis -94 <br />Changes in relative cover on a yeazly basis may not reflect long term trends but should reveal <br />individual species responses to precipitation distribution and competition from other species. <br />The changes in relative cover from 2006-2007 reveal changes in species growth from a <br />Coors Energy Comparry Keenesburg Mine Page 20 <br />2007 Revegetation Monitoring Report <br />