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The number of acres of affected land on which reclamation ef- <br /> forts have been initiated are presented below. Refer to Map Z <br /> for location of lands in the various phases of reclamation. <br /> 1978 1979 1980 <br /> I 2Z6A 1 - 26. 4A <br /> I I - 6,4 A I I - 8 4 A I I - JO,4 A <br /> III - 0 III - 0 III - 0 <br /> Total - Q,R,O A Total - ,3/,mi{ Total - 36, $A <br /> 1981 1982 TOTALS <br /> I - 48,7 A I - 42,7 A I - 42,7 A <br /> II - 17,E A <br /> III - p III - 4.p III - gpA <br /> Total - 6(, 3 A Total - (,�,� Total - 6 6,:9A <br /> Revegetation Species - The number of plant species possessing <br /> potential for achieving desired reclamation objectives on disturbed <br /> sites is limited by harsh environmental conditions which predominate <br /> the region. Inimical environmental factors which limit the diver- <br /> sity and growth rates of vegetation species for reclamation are <br /> amplified on acres where the microsite has been detrimentally im- <br /> pacted by disturbances resulting from mine and mill activities (i .e. , <br /> soil compaction, steep slopes, etc. ), which places further restric- <br /> tions on species available for revegetation. The revegetation <br /> species list becomes even more limited by the fact that commercial <br /> availability of indigenous species of the area which possess the <br /> best revegetation potential is low. Due to the limited availability <br /> of plant materials for revegetating affected lands, a testing pro- <br /> gram was implemented to determine which of the introduced and <br /> indigenous plant materials commercially available would satisfy <br /> revegetation requirements on disturbed sites. The Durango office <br /> Page 7 <br />