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Species Identification and Verification • Species identification was accomplished in the field through the use of plant identification keys (Weber,' 1987; Whitson, 1987). In cases where plant identification was inconclusive in the field, voucher specimens were pressed for lab identification. Final species identification was undertaken by Dr. William Weber, Curator Emeritus of the University of Colorado, Boulder Herbarium. III. RESULTS Lone Pine Gulch Surface Facilities Area Three distinct areas were sampled at the Lone Pine Gulch Surface Facilities Area. Results of vegetation cover sampling are reported for each area separately. The plant species encountered and their locations aze presented in Table 1. Specific sampling information for the Lone Pine Gulch Surface Facilities Area is contained in Table 2. Underground Deve%pment Waste Pile • The Underground Development Waste Pile (UDWP) represents approximately one acre of reclaimed and revegetated underground development waste rock excavated during the construction of the Lone Pine Gulch ventilation fan portals. The UDWP was topsoiled and revegetated in 1995. The UDWP is sited approximately 1,000 feet southwest of the fan and has been fenced to prevent unauthorized grazing by domesticated livestock. The UDWP is a gently sloped mound which exhibits sheet flow drainage to the northwest. Two lifeforms were encountered during the sampling of the UDWP Area; graminoids and forbs. Nine species were identified during sampling at this parcel. Total vegetation cover of the UDWP was 43.50 percent. Based on cover sampling, graminoids represented 36.50 percent mean cover and forbs accounted for 7.00 percent mean cover. The dominant vascular plant species of the UDWP (based on cover) was Bromus tectorum (cheatgrass). Bromus tectorum accounted for 19.50 percent of the mean cover. Six additional species contributed significant cover at the UDWP; Agropyron trachycaulum (slender wheatgrass) provided 7.50 mean cover, Bromus inermis (smooth brome) accounted for 5.50 percent cover, Achi/lea /anulosa (western yarrow) provided 3.50 percent cover, .~ropyron smithii (western wheatgrass) represented 2.50 percent cover, Polygonum douglasii (knotweed) provided 2.50 percent cover, and Poa • pratensis (Kentucky bluegrass) contributed 1.50 percent total cover. _~