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Vegetative litter (prior yeazs growth, dead wood, and other biologic organic material) <br />comprised 32.40 percent ground cover overall within the 1998 reseeded or interseeded azeas. <br />Baze soil comprised 11.2 percent of the ground cover. No rock or cryptogams were <br />encountered during the cover sampling in the 1998 reseeded or interseeded azeas. <br />3.1.2.2 Herbaceous Production <br />Total herbaceous production within the 1998 reseeded or interseeded areas was 115.75 g/m2 <br />(10321b/ac). <br />3.1.2.3 Species Composition <br />Cover sampling identified four lifeforms and seventeen species within the 1998 reseeded or <br />interseeded azeas. The lifeforms included eight species of perennial grass, one annual grass, <br />one perennial forb, five annual fortis, one succulent, and one shrub. Of the species <br />encountered on the 1998 reseeded or interseeded azeas, twelve were native and five were <br />introduced. Perennial species outnumbered annual species by eleven to six. Both warm and <br />cool season species contributed to the seasonality of the 1998 reseeded or interseeded areas. <br />Warm season graminoids outnumbered cool season graminoids by six to three. Cool season <br />fortis prevailed by five to one. <br />The 1998 reseeded or interseeded azeas had eight species contributing greater than three <br />percent relative cover this yeaz. The species contributing greater than three percent relative <br />cover included four perennial grasses, one annual grass, and three annual fortis. These <br />species included Bromus tectorum (41.86%), Calamovilfa longifolia (10.30%), Helianthus <br />annuus (9.97%), Kochia scoparia (7.64%), Sisymbrium altissimum (7.64%), Stipa viridula <br />(5.65%), Bbuteloua gracilis (4.98%), and Andropogon hallii (4.32%). <br />3.13 1999 RECLAMATION AREAS <br />The 1999 reclamation azeas encompass a total of approximately 18 acres of reclamation in <br />two distinct azeas within the Keenesburg Mine permit area. The azeas are found on the south <br />and east sides of the mine; Area 5, a 2.6 acre pazcel south of the topsand piles, and Area 9, <br />15.3 acres of the former A Pit. Area 5 is neazly flat with a gentle slope (<1 °) to the north and <br />east. Area 9 slopes slightly to the north. Reclamation and coincident revegetation within this <br />azea took place in 1999. Replaced soils were sandy in texture. Specific sampling <br />information for the 1999 reclamation areas is contained in Tables 3 and 7. <br />3.1.3.1 Vegetation Cover <br />Total vegetation cover of the 1999 reclamation azeas was 54.20 percent. Graminoids <br />provided 39.20 percent mean cover (75.80% relative cover), fortis accounted for 14.60 <br />percent mean cover (23.32% relative cover), and succulents provided 0.40 percent mean <br />cover, and 0.87 percent relative cover. The lowest total vegetation cover of the 1999 <br />reclamation azea pazcels sampled was found in Area 5 (42%) and the highest was in Area 9 <br />• (62%). Both Calamovilfa longifolia and Bromus tectorum were encountered in all transects, <br />and Ambrosia psilostachya (ragweed) was encountered in 80 percent of transects. <br />Coors Energy Compary Keenesburg Mine Page 12 <br />2007 Kevegetation Monitoring Report <br />