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Total Herbaceous Production (2002) Reference Area 1995 Rec. Areas 1997 Rec. Areas 1998 Areas • bar 26.28 52.13 61.15 79.08 s 9.48 30.16 22.61 13.78 N 15 15 15 IS Nmin 40 104 42 9 Species Composition (2002) Success Osgood 1995 1997 1998 Standard Sand Ref. Rec. Areas Rec. Areas Areas Total Perennial Species 7 6 I I 5 3 (>3% rel. covert Warm Season Grasses 4 3 7 2 2 Perennial Forbs 1 0 0 ] 0 Relative Importance All qualify- 5 of6 All species All species All species (3%<a<40%) ing species • Based on the results of the 2002 quantitative sampling, all reclamation azeas met the revegetation success criterion for vegetation cover. All reclamation azeas vegetation cover means were greater than the vegetation cover mean of the Osgood sand reference azea. With regard to total herbaceous production, all reclamation azeas significantly exceeded the total herbaceous production value from the Osgood sand reference azea, therefore meeting the revegetation success criterion for herbaceous production. Of the azeas sampled in 2002, none of the reclamation azeas could meet the species composition revegetation success criteria. Reclamation azeas fell short in the number of warm season grasses and perennial forbs represented; while the Osgood sand reference azea did not contain the requisite representation by either warm season grasses or perennial forbs. The concern with the current species composition success criteria has been documented previously (Savage and Savage, 1994- 2000, 2000a, 2001). IV. DISCUSSION AND CONCLUSIONS Areas revegetated in 1995 and 1997, and those reseeded or interseeded in 1998 were quantitatively sampled in 2002 to evaluate revegetation establishment for monitoring purposes, and identify any azeas that require implementation of additional measures to i• Coors Energy Company Page 15 2002 RevegetaUon MonFtoring Report