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r~ J 1 1 1 1 LJ 1 1 1 1 1 t 1 1 V E G E T A T I O N Tl~e US'SCS has distinquish~ad three separate range sites ~ Wa1V;er North permit area including sandy plains, loamy p sandy bottom lands range types. Relatively recent floc: scoi.iring events have removed the soils vegetation regi whir_h this classification is based. However, this semi- continues to support many of the clima:t species associa the•~e range sites. Shrubs, fortis and grasses noted on a inspection of the area include: Buffalo grass Arizona fescue A14::a1 i sac~_:ton Little bluestem Sandberg bluegrass Russian--tl-ii.stle F'ur-pl.e henbane Broom snaF::eweed Yucca Sagebrush F'ricV::ly pear cactus Vegetative cover was less tl-pan 15%. Suchlor dactyio;ur Frstu:_a arizonz~_a Sporob(tlus airoicrs ~•chi=acf'iyr:!um scopar•i Poa ~and!ier•gi i ~al~ola lberica Hyoscyamus n:•3er v"utier•rr<-ia sarotl>rar %ucca glauca ~rtemisia spp. Opunt:a :=ompressa Final reclamation of the <~ite will be the esta6lish,r~ent grasses. S OIL S Ihining operations at the Wal4cer F'it North will iri'volve tcirbance of three distinct sail series. The three so occ~ipying the Walker F'it North area, as recognized by Soil Conservation Service., are Lincoln sand, Colby silt Glendi've and Havre soilsa. Common to each of these so sand and gravel substrata which is present at the surf ac locality, rapidly permeable profiles, low water holdin ties (with stored water readily available to plants), partial result of these properties, an overall dror.ig aspect. .thin the .t: i.n~; arid ling r~nci lE?5 UI_l is ('1 .e(i iv:i i:.fi {~r.e,...~,~ii.e ~m native he dis- 1 types he USDA oam, and is is a in this capaci- nd as a ty sail Lincoln sand soils within the permit area are scirficial and and gravel layer with slopes not e:;c:eeding 1%. In combina ion with the properties cited as bEaing common to all soil types w thin the permit area, an e::cessivel'y drained soil profile, low natural fertility, and rapid wager percolation ma~:e Lincoln said sails unsuitable for agricultural uses. Lincoln sand soils are suited e;;clusi'vely for use as ra Native vegetation r_ommori to Lincoln sand soils include grass, Brie grama, Sideoat:s grama, Indianyrass and Sand elands. Buffalo p.-'?