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• operations and fro-, adjacent areas with the onset ei haul <br />roads, minim; facilities, and stockpiles. <br />Impact of native ve~;ctation loss would depend upon the <br />success of reclamation. Loss of native vegetation could <br />last for some time, depending mostly on [he rate ar.d <br />ability of native species to invade the area and t::e <br />extent to which trees and shrubs are transplanted f-om <br />undisturbed areas to spoil areas. 'Some small areas, due <br />to soil texture, toxicity, or other factors, might Se <br />impossible to reveoetate, -~aL:in6 the loss of vzseta:ion a <br />permanent utpact <br />Twenty to 50 years may be required for vegetative eco- <br />systems to become re-established back to native species, <br />• depending on cli-alit conditions anal success of rco'_ama- <br />lion. Current reclamation practices have not been in use <br />long enough to determine if a significant number o` native <br />plant species can be established on reshaped-topso_led <br />spoils. Therefore, the greatest impact on vegetation <br />would be the complete loss of existing stable plant eco- <br />systems. The second most significant impact would be the <br />projected decrease in production on revegetated spoils, <br />though seasonal peak production would no[ be expec=ed to <br />decrease appreciably on most sites. Species diversity <br />trould probably decrease also. Mining of the subject tract <br />would not affect any knoam threatened or endangered plant <br />species. <br />• <br />142 <br /> <br /> <br />