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<br />001033
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<br />Rock for riprap nnd mr,sonry is r.vo.il:1.ble from sevoro.l 10co.l
<br />sources o.nd from quarries ut Guernsey, Wyoming, Tl~ nearest such
<br />rook in sufficiont quantity is f01.l!ld o.t thin ledges capping bcnches
<br />on tho north o.nd ",ost edgcs of Tao10 lJO,-,"ltain, 0. fc\"! miloos north,"lCst
<br />of thc damsitc on State of Wyoming sohool lr-n<\, This rook is 0. hard
<br />silicoous limcstone oocurring in throe Inyers nvoro,g101g 4, 14, and 6
<br />ino:les tlliok, sopc.rntod by clc.y pc,rtings a rOY' inches thick. Tho
<br />uS:1.blo outcrops rere tOIT.linatod by " thiGkoning of tho sho,lo partings
<br />'end o. thinning of tho rook layors. Tho outcrop in sOOo 16, T, 22 N"
<br />Ro 60 TI., llns boen ch.nrod of o"lorbu:!"don OVOI' n strip nveraging 20
<br />fect \'lido rend eight..tonths of 0. milo le.ng, Considerablc rock hns been
<br />removed frem this CIrca for use c\s building stone c.nd cc.n:1.J. ripr:1.p,
<br />Another outcrop is found cnpping a bC!wh on tho opposito side of tho
<br />ridgo in seotions 17 nnd 20, T, 22 N., R, 60 Wo Samples from tho
<br />outcrop in sOGtion 16 Hcre tostod in Dcnvor. Tho ,'osults of tho tosts
<br />indicato tl-k'1.t this rock is not suitabLc for usa c,s crushed aggrcgnte
<br />for cono,retc, r.nd t:.,at [,!though not first quality ripl'ap ii; '''''-y bo
<br />used fo~ that pu~posc.
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<br />801'10 sandstono is fou!"ld on tho hills sO'lth of Torrington, Wyoming.
<br />1fu.ch of this occurs ~s a hill c~1.1 roal:::, 3 -to 31) rout thick.. \"!i+'h
<br />littlo or no ovorburdollo The ho,rd!10SS of tho rock is v"'~iablou
<br />AlthOUGh it is boing used for riprc.p 'oy the Goshen IrrigCltion District,
<br />much of the rook is r:robably too soft to sC.tisfc.ctorily \'Jit:lstClnd
<br />10.boro.to.~y tests. Results of testing ill Denvor indicC\to it is not
<br />suit~b~o for use ns eithor concreto cbgrog~to or riprupo
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<br />TYIO compo.nicE 'we presontly opero.ting qU:1.rries in the vicinity
<br />of Guernsey, \Tyomingl ono quc.rries c. dolomitic limostono and the other
<br />gr::tcli to,
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<br />Altorno.~ci vc Plnn.s
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<br />Tho Dry Crook sito is tho scoond to be oOllsidcred for 0, rogulc.tory
<br />rcsorv8il'. Tho Horse Crook funsito, on the other side of To.blG
<br />:/101J.!ltn.l:'l from t~10 D.;'~{ CrcIJk D:-"';rlSi to, Y}s"3 firs \:; cXD.!::o.cncd :Juvcro.l ycc.ro
<br />o.go f'OJ- ross:L"nilitics o.s ~. rogulo.tir.g !'csorv0irC'l J",t'..:1ds .d(~!'C C'len
<br />rCGcr""'.-cc for ~_ reservoir in thi::; nrco.G Test drill:;'Yl/~; du::ing the,
<br />sumne!' of 19,10 rever.led 0. deop gro.vel Gection beneath the loam 'i,'hioh
<br />would ne~essitc.te exc~~.tions up to 80 foet deep for CI cutoff wnll.
<br />Tho :;C]ological considcrr-.tiol1s, OXOOI?\'; for tile dcc~)(:r c-.1 luviuI:1, G.re
<br />vcr:r s:rcj,IClr to t';e Dry Creole Dan ('ll,d r.oservoir site, The bedrock
<br />under tho dam cma the 101"IOr elevc_tion3 of the reservoir c.ron would be
<br />the 1o,noe fornc.tion, Tho Chr,dron fornc_tion is oncountored in tto
<br />hib~lCr olc.......Cl.tionn of the reservoir o.rcr'." The rcs0l'voir lands iI! the
<br />Horse Creck sito aro mostly unsui to.ble for irrir,o.tion \.,hilo tho lr,nds
<br />in t]~e Dr~' Creak Reservoir c.rea c.re predoninr.ntiy irrigated lc~1ds.
<br />Despito this fo.ot, tho Braziol sita is c02,sidcred tho ClOro foc.siblc
<br />beco.uso 0 f the bettor foundation conditions,
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