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forb. These species included Calamovilfa longifolia and Sporobolus cryptandrus <br />(12.14%), Bouteloua gracilis (11.43%), Agropyron cristatum (9.29%), Bouteloua <br />• curtipendula (8.57%), Panicum virgatum (7.14%), Schizachyrium scoparium (6.43%), <br />Agropyron dasystachyum and Bromus marginatus both with (5.71%), Agropyron smithii <br />(5.00%), and Andropogon hallii and Kochia scoparia each contributing (4.29%). <br />1997 RECLAMATION AREAS <br />The 1997 reclamation azeas sampled encompass approximately 18 acres of reclamation in <br />four distinct azeas within the Keenesburg Mine permit area The azeas aze found <br />throughout the disturbance azea of the mine and include two areas adjacent to B pit (Areas <br />18 and 21), an area to the west of A pit (Area 14), and a road corridor between the <br />1985/1986 central reclamation areas and the 1986 east area (Area 3). Vegetation cover <br />transacts and herbaceous production quadrats were distn'buted within the four areas based <br />on size. The 1997 reclamation areas aze neazly flat overall with a gentle slope (1-3°) to <br />the north. Reclamation and coincident revegetation with the permanent seed mix took <br />place during the autumn of 1997 within these azeas. Replaced soils were sandy in texture. <br />Specific sampling information for the 1997 reclamation azeas is contained in Tables 6 <br />and 7. <br />Vegetation Cover <br />Total vegetation cover of the 1997 reclamation areas was 23.20 percent in 2002. <br />Graminoids provided 12.40 percent mean cover (54.00% relative cover) and forbs <br />• accounted for 10.80 percent mean cover and 46.00 percent relative cover. Total cover <br />values within pazcel transacts were variable as was the cover between pazcels which <br />ranged from 18 to 30 percent. Two graminoid species were present in every pazcel <br />(Agropyron smithii and Oryzopsis hymenoides), and Calamovilfa longifolia, Sporobolus <br />cryptandrus, and Kochta scoparia were represented widely in three of the four pazcels. <br />The ]owest overall total vegetation cover was found in Area 18 (18%) and the highest <br />cover for an azea was encountered in Areas 3 and 14 (30%). <br />Within the 1997 reclaration areas, the native perennial grass Sporobolus cryptandrus <br />provided the highest overall cover with 4.20 percent mean cover and 17.33 percent <br />relative cover. Sporobolus cryptandrus was found in 70 percent of all 1997 reclamation .. <br />transacts sampled. Kochia scoparia provided the second highest overall cover with 2.60 <br />percent mean total cover and 15.33% relative cover. The biennial forb Melilotus albs <br />(white sweetclover) contributed 4.20 percent mean cover and 14.67 percent relative <br />cover. Five additional species contributed significantly to cover this yeaz, t7ryzopsis <br />hymenoides accounted for 2.40 percent mean cover and 11.33 percent relative cover, <br />Calamovilfa longifolia contributed 1.80 percent mean and 8.00 percent relative cover, <br />Agropyron smithii provided 1.60 percent mean cover and 6.00 percent relative, Aster <br />fendleri (aster) accounted for 1.40 and 5.33 percent mean and relative cover, and <br />Amaranthus retroflexus (redroot pigweed) contributed 0.80 percent mean and 4.00 <br />percent relative cover. <br />I • <br />Coors Energy Company Page 9 <br />2002 Revegetation Monitoring Report <br />