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• Baseline Technical <br />Report <br />ARCADIS <br />Report for Soils and <br />Biological Resources, <br />Cresson Mine Life Extension <br />Project Area <br />4.1.9 Disturbed Areas <br />Most or all of the soil has been disturbed, and vegetation is dramatically changed or <br />absent in these areas. Where vegetation occurs, it is typically a mix of native and non- <br />native grasses and forbs and may include noxious weeds. <br />4.1.10 Reclaimed Areas <br />These areas have been disturbed by mining activity in the past, but have since been <br />reclaimed. The vegetation is typically a mix of native and non-native grasses and forbs <br />and often reflects the composition of the reclamation seed mix that was in use at the <br />time. Cover is open to dense, depending on the amount of time that has passed since <br />reclamation. Noxious weeds may be present to a limited extent where native <br />vegetation has not been completely re-established. <br />• A 1998 revegetation assessment of reclaimed areas on Globe Hill planted in 1992 and <br />1997 shows vegetative cover ranging from 55.4 to 63.6 percent. The cover consists <br />mainly of cool and warm season grasses with lesser components of forbs and shrubs <br />(Shepherd Miller 1998). <br />4.2 NOXIOUS WEEDS <br />Noxious weeds are not generally a problem in the Study Area or vicinity, in spite of the <br />long history of mining, occupancy, and other land disturbance in the area. The most <br />commonly noted species is yellow toadflax (Linaria vulgads), with lesser amounts of <br />Canada thistle (Cirsium arvense), musk thistle (Carduus nutans), and Dalmatian <br />toadflax (Linaria genistifolia spp dalmatica). These species do not presently appear to <br />be displacing native vegetation. Several of these species were probably introduced to <br />the area as ornamentals (toadflax and ox-eye daisy), or by livestock (thistles and <br />cheatgrass). <br /> <br />CCV Final Technical Report (3-28-08).doc 13