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to thirteen, with one biennial. Both warm and cool season species contributed to the <br />seasonality of the 1998, 1999, and 2000 reclamation areas. Warm season graminoids <br />outnumbered cool season graminoids by ten to eight. Cool season forbs prevailed by thirteen <br />to three. The succulent was evergreen and the shrub was deciduous. <br />The 1998, 1999, and 2000 reclamation areas had nine species contributing greater than three <br />percent relative cover this year. The species contributing greater than three percent relative <br />cover included four warm season perennial grasses, one cool season perennial grass, one <br />annual grass, one perennial forb, and two annual forbs. These species included Calamovilfa <br />longifolia (31.17 percent relative cover), Bromus tectorum (11.84 %), Ambrosia psilostachya <br />(8.04%), Helianthus annuus (7.48% relative cover), Panicum virgatum (7.12%), Agropyron <br />smithii (6.56%), Kochia scoparia (4.91%), Bouteloua gracilis (4.29%), and Andropogon <br />hallii (4.05%). <br />3.2 COMPARISON OF RECLAMATION AREAS WITH FINAL REVEGETATION <br />SUCCESS CRITERIA <br />Comparison of the reclaimed area values for vegetation cover, herbaceous production, and <br />species composition with the final revegetation success criteria, indicates whether <br />revegetation has been successful, or whether additional measures need to be initiated to <br />enhance vegetation community development. The tables below allow the comparison of the <br />parameter values with the standard to be achieved, either from the predictive equations in the <br />case of total vegetation cover (y=0.0173x3-0.8592X2+ 14.562x-47.015) and total herbaceous <br />production (y=0.3749x2.248 ), or the established standard for species composition. <br />Total Vegetation Cover (2009) <br />The predictive equation value for total vegetation cover for 2009 (based on 13.71" <br />precipitation value): 35.69% <br />Parameter Value I 1998/1999/2000 Rec. Areas <br />mbar 60.96% <br />S 7.41 <br />N 46 <br />Nmin 3 <br />Based on the results of the 2009 quantitative sampling, the 1998, 1999, and 2000 reclamation <br />areas exceeded the predicted total cover vegetation value of 35.69 percent, meeting the final <br />revegetation success criterion for total vegetation cover. <br />Coors Energy Company Keenesburg Mine <br />Page 1 O <br />Areas 2, 5, 6, 7, 9, 10, 15, 16, and 19 Vegetation Study (2009)