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EXHIBIT I - 3 BENT COUNTY, COLORADO
<br />\[ost of tho acreage is used as rnn~e. A small part is
<br />farmed to wheat and sorghum. Rotatron and deferment
<br />of ~rnr.iug :Ind reseeding of );rLSS help iu maintaining
<br />vr~rlnl inn :Ind cr.ut.rolliug erositnl. (Capability unit VIo-
<br />1, unnirrigalcd; ].oauly 1'huus rulgo SItC)
<br />ColUy silt loam, 0 to 1 percent slopes ICoAI.-TUis soil
<br />rw•rnls in all p:n•ts of tbr, connfy bat is mostly in the south-
<br />ern liars. It is un the uplands, on terraces, and along small
<br />draina~mwa\=. Gencl:•tlly it occurs as irregularly shaped
<br />auras 40 to GO acres or more in Size, The teatme is silt loam
<br />In a drpt.ll of about. 45 inches or more.~Thc surface layer is
<br />a.b~nd. r im•hrs Lh icl:. Llrluded in mapping were spots of
<br />IYilec silt. loans, iu slightl,y depressed parts of the land-
<br />scnpr, and a Ecru auras of liim loam, itt the mote sloping
<br />arras.
<br />'1•bis soil c•an hr. used for all crops grown in the county.
<br />It. is easy to work. It takes iu water at a moderate rate and
<br />Las :I bi~h wah•r-holding capacity, RnuofF is mrtlium, anti
<br />t.hn rr„sinu Ilnz:n~d is moderate. In dtyfannetl areas the
<br />hazard ++F =oil blowing is severe. In irrigated areas the
<br />Irspnnsr to mm~aecment is rood.
<br />.\huna.:Ill oP I ho nclnage. is used as range. A small part
<br />is irri~alcd :Ind used fut• ct•ops. Leveling saves irrigation
<br />walrr and makes uniform application easier. Barnynrtl
<br />mm~nrc and ;:rrruauaumn crops t•eplenish t•he orgnnlc-
<br />ntattcr content. and imprm-e fertility and filth on the ir-
<br />ri~ahvl acrrn;ms. (Capabilify unit I-1, irrigated; ca.pa-
<br />hilil v unit. \•lc-1. nonirrigated; Loalny Ylmins range site)
<br />Cidby silt learn, 1 to 3 percent slopes 1CoBl.-This soil
<br />is mainly in rho eastern port of the county. It occurs as ir-
<br />mgnlar•h• shaped areas 100 aclrs or more m size. The tea-
<br />hnv is silt. loam Ito a depth of about 45 inches or more. The
<br />surface laver is shoat G inches thick. Included in mapping
<br />were. spots of rho molro nearly level Wiley silt loam, smal~
<br />arras of nt•arly Level Baca slit loam, anti spots of Colby
<br />si I f lea n1, 0 to 1 pelcon t slopes.
<br />This soil has a high lei•el of fertility. Ittak/s in water at
<br />at n moderate rate and has ~a high water-holding capacity.
<br />]lnno(F is medium, and LUo Uazartl of water erosion is
<br />severe. 1'ho hazard of soil Ulowing is moderate to severe
<br />unless a \-rgetnt.ive cover is maultamed. The ralsponsa to
<br />management is good in irrilra.tetl areas.
<br />:\bnnt all of thr,acreago Is need as ran~o.`Vheat is grown
<br />iu n few plans, and ~pjtrtnfthisactr..lgo Is ]rrigrlted. Lovel-
<br />iug conserves irI•igntmn water and makes uniform appli-
<br />cation easier. Barnyard manors and green-manure corps
<br />rrplcnish t.hti nr;;nnlc-maktcr tpntcntnnd improve fertility
<br />mul ti1t.U nit Irrigated acreages. Itotnting ~arul deferring
<br />gl;•tzing anti reseeding gr.•1ss are important ~rnotices in
<br />Iceeping the I:tnge productive. (Capability oars IIe-2, ir-
<br />rigated; capabiLty unit VIo-l, nonirrigatetl; Ltmmy
<br />PlaII1F Inllg051te)
<br />ColUy silt loam, 6 to 25 percent slopes (CoEI.-This soil
<br />orcnrz as ~ratMrr•d small arras, elongated in shape, along
<br />the edges of dtninageeays, mainly in the eastern part of
<br />the ceunt;v. The omgmal surface layer, which tuns about
<br />f inches shirk, has horn rrotled :•tway in most areas, anti
<br />Ihrrr at•o nnnlcrous gnllics ~ to 4 feet xlcrp. Included in
<br />ma piling n ere small pleas of Co]Uy silt. loam, l to a percent
<br /><Inprs.
<br />.111 of the acreage is used as range. P•unoff is rapid, and
<br />the ernsimt bazars is sevolr, Restriction of ~ •azing nronld
<br />holy in nminta.ining a good grass cover and in controlling
<br />erosion. Dams and divclsions would prevent theaccmm~la-
<br />13
<br />tion of eactyss winter. (Capability unit VIe-1, nonirrigated ;
<br />Loamy Plains range site)
<br />Deertrail Series
<br />1710 Deertrail series consists of nearly levol to gently
<br />sloping, deep, moderately alkaline to strongly alkaline
<br />soils that formed in linty, saline alluvium derived firom
<br />shalo and shaly limestone. These soils occur in all parts of
<br />the county.
<br />Lt n typirtl profile the surfnco layer is light Urotvnish-
<br />gr;ty ]igLt clay loam about G inches thick. '1710 subsoil is
<br />grayish-brown clay loam to pale-Drown silty clay loam
<br />about 14 inches thick. This layer has prismatic stntctnre
<br />that Urcaks to malium bloc].y. Tho substratum is pale-
<br />Urown silty clay loam to a depth of GO inches.
<br />'17tese soils are naturally well drained. They have slow
<br />to medium runoff, medium intenlal drainage, mocleraRo
<br />permeability, and a high water-hohling ralmcltyy. Natural
<br />fertility is iuggh. The salt content is high enougli to affect
<br />plants. Soil Ulowing and water erosion are hazards. The
<br />rnspmtso to range maltagement is goal.
<br />'1'ho entire acreage is used as Inure. Some of it was
<br />plowed, but farming was extremely difficult Uecutse the
<br />soils tvero so highly alkaline. 11lost of the acreage that tv,•ts
<br />plowed is sevel•cly curried, and the reversion to gl•a~s has
<br />been t•ery slow.
<br />'t'ypical pmfile of a Deertrail clay loam (4l0 fret cast
<br />anr1~410 fret. south of \`N. cornm• sec. lf,, T. 25 S., R.
<br />53 1V.)
<br />,171-0 to 3 inches, light brownish-gory (IOSR r,/'.) light clay
<br />loom, dark grayish brown (lOTR 4/2) when moles;
<br />ornk In umdrratr, platy stnudlrc to wen k, Ilnc, grnn-
<br />ulnr; slightly bard when dr}•, friable when moist; cai-
<br />rnrvvms; clear, smooth bnundan'.
<br />.\1_'-a fo d inches, light brownish-gray (IOYR G/?) light clay
<br />loom, dark grayish brown (]OYR 4/2) when nmist;
<br />wen k, umdium and One, subs ngldnr hlocl:S structure:
<br />hard when ttrS, Crhtble when woiat; cnlcnreons; clear,
<br />sumnW bnundnrc.
<br />lt_t-G to 13 inches, gnq~ish-hrmvu (lOYR;,/2) clay lomu, dnrl:
<br />grayish brown (101"12 4/2) when moist; weak, me-
<br />dium, prismatic strucl.IVC to nmdernte, medium and
<br />One, subnnkndar blocky; very hard when dry, llrm
<br />when moist; slronglY rnlcn renns; thin, patchy clop
<br />skins; clrn r, smarth hnundn ry.
<br />1:..^.cssa-Ia to 211 inches, Pu to-brawn (IOYR (i/1) silty clay
<br />ion m, brown (lOl'IL 'u/3) when moist; very weal:,
<br />tnnrse. prismatic strnchtre to weak, marsrt, subanglt-
<br />lar bla•ky struchtre; hard when dl;v, friable o•hrn
<br />owlet; sh•nnglp cnlcnmous; grndnnl, smooth bonnd-
<br />ary;few visible snit and gypsum spots.
<br />Crssn-.0 to GO Inches, pale-brown (lOYR n/3) silty clay loam,
<br />brown (lOYR SB) tubes motet; massive; hard when
<br />dry; friable wiles moist; strongly rnlcnreous; gradual,
<br />smooth boundary; colmnon salt and gypsum spots.
<br />The A horizon ranges Prom 4 to S Inches In thlekneas and
<br />from loam to clay loam In texture. it Is moderatcl,Y limy. The
<br />B^t horizon ranges Crom G to iv inches in thickness, from clay
<br />loam to light cloy In texture, and form grayish brown to
<br />brown in color. Cppsnm crpsLlls are visible in the B3 and C
<br />horizons.
<br />I)eertrnil soils are finer texts red, contain more mltr+, and
<br />are more deeply developed tlmn Stoneham soils. They have n
<br />more clayey subsoil and are deeper over shale, nail limestone
<br />than I\Ilnnequa soils. They have a thicker and Oaer textured
<br />subsoil and contain more snlht than Wiley soils.
<br />Deertrail clay loam, 0 to 5 percent slopes (DeBI.-This
<br />soil occurs in all parts of the county. Included in mapping
<br />were spots of jViley silt loam, on raised pnl•ts of the ]and-
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