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• Location Cover # of sam les Herb. Prod. # of sam les 1998 Reseed/Interseedin s Area 26 S of sediment nd 6.2 ac. 3 4 Area IO S of'87 Area 9.7 ac. 4 6 Area 2 of Du out 2.0 ac. 1 2 Area 15 W of A Pit 2.7 ac. 1 2 Area 7 E of'87 Area 1.6 ac. 1 I Total Sam les Reseed/Interseediu s 10 15 Sample sites were located in the field through compass triangulation and pacing from known landmazks. Figures 1 and 2 illustrate the location of the reference and reclaimed azeas and sample point locations for each azea sampled. In the azeas reclaimed in 1985, 1986, 1987, 1999, and 2000 a qualitative evaluation of revegetation success was undertaken this year. The 1985, 1986, and 1987 azeas were previously monitored (1994-1998) and after successfully meeting revegetation success criteria, were released from the Phase II liability requirements by the Colorado Division of Minerals and Geology August 11, 1998. This yeaz, qualitative evaluation of these areas included estimating vegetative cover, herbaceous production, and identifying the dominant plant species. Any locations or trends in vegetation development that required attention were also noted. The areas revegetated in 1999 (Areas 5 and 9) and 2000 (Areas 6 and 19) were qualitatively evaluated this yeaz. The Osgood sand reference area was measured and mapped in the field in 1994 by Savage • and Savage staff, and this scaled drawing of the reference azea was used. On the scaled drawing, a Cartesian coordinate grid (50x50 feet) was established. Computer generated random numbers were used to establish a pool of x,y coordinates. Ten vegetation cover and fifteen herbaceous production sample locations were randomly established for the reference azea. Sample sites were located in the field through compass triangulation and pacing from known landmarks. FIELD SAMPLING Timing Field investigation was undertaken during the period August 27 through August 30, 2002. This time period coincided with anthesis and maximum development of the majority of plant species found in both the native vegetation community (Osgood sand reference azea) and the reclaimed areas at the mine site to be evaluated. The continued drought conditions throughout Colorado, including little spring precipitation at the mine retazded plant growth and development at the site. Vegetation Cover Vegetation cover was estimated by the use of the point-intercept method. An ocular point frame (ESCO Associates) was used to minimize instrument error and maximize precision • Coors Energy Company Paga 3 2002 Revegetatbn Mon'rtoring Report