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<br />INTRODUCTION
<br />Ub~ring, 1Curtli ~ \ssuci:rtes (Oh:1? v. as Initially contacted ley c:astl~
<br />t'onrrete Cunlp:uly, thruugil their Trn\•irurunental Coruullarrt, ',1 r. 'darl. 11~-ilnur,
<br />Uarnver, Colorado re~xrding a slope stability },roof°m and resulcult comGlaint at
<br />Iheir Snyder Quarry .access (toad in early' July, ]9R8. 'flre {,ruhl:-lu alas
<br />initially discussed with hlr. Heffner, a report recieaed, photographs examined,
<br />and a field inspection scheduled.
<br />The referenced Ileifner report aiddressed a ..,m1.Lun[ from :~ ..u'. '.,,gal, a
<br />resident in tha Cedar Heights development, within view of the problem area.
<br />The report discusses fow• (4) "fill and spill" areas along the arr~•s, rcr,rd and
<br />has labrled the slope stability' problem as :',hL.-. 1. Tne report defiers AKE.a
<br />u1 as an area that has been subject to considerable do[°:nhill ~eolo~ic
<br />flip\elnellT Of Llle sV rl trCe C'PnsC Gf the E'al'Lh O~el'la': 1IIg :1 Sliai~ :,f ;. lJ Lhc`
<br />extent ui cruatiug a siraalu blockage at [he toe of the canyon. The blockade
<br />has resulted in the irtlpoundmeni of a permanent pool of u:rLer u{;:,[ream.
<br />ll is the intent of the Owner, Castle Concrete Cump:iny, lu r.:m~•dy this
<br />},rubluul as suuu as possible iu as efficient and rnvirunureutally wld.sruptive
<br />way as possible. This report offers su';;gesred remedial •a~:tiol~:; and suh,equrnt
<br />conclustuus.
<br />FIELD INSPECTION,'OBSERVATIONS
<br />field inspection of the Snyder Quarry Fund, and ~.FEA r/1 ul par[ictilar
<br />~.~us conducted by the author of this report toy,ether v:ith S1 r. Gordon :ilur~an,
<br />C;title ~~ncrota Company, and [Ar. iuar6 Heil'ner, Encironnleutal i'unsultun[ to
<br />the O',cnzr tin Thursday', July 14, 1988. a series of ground I.hutu~~raolls ilrre
<br />taken during this field inspection.
<br />~'Ll r.;!,;, w .'~kE.', /; 1 i~ It,cr.t~•~I rli ' I~,- .,,i !~ ,i I. r ~ i.. :.
<br />.., ~.i an ..,..,U. ., {,}.l u:.,IU.~Lely~ U., uute5 abaft flit ledar tIm1L11La ;; n:ud Ilu~,~e.
<br />'phe site is easily identifiable as one travels toward the quarry operation since
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<br />ionsiderabl.~ rood dumsge and displacenl~nlt. to{.; ru'currrd in rcLent ;:~~:u'~ :u a
<br />result ui rile slope instability. The Owner has continued to dump loose
<br />limestone tailings at the area of damage in an effort to stabilize the haul
<br />road.
<br />Prlvr t;. dcscendin>; Lo the bottom of thr c:ut>on, 1t1S0 aerial tcpugrapYly
<br />ryas exanuned. The prr-slope failure ulav:u~.,u dil'feralltiul frurn the f:,ul Had
<br />lu Llic Llirc'a;1 ul~ Lh~ ~Ir~nlll l~;U 3pprUxirlrtLilly 13U leer. '1'~lls dillcl'dullal
<br />>~ occurred i^ ;1 distance of about ^'20 feet resulting in a natw'al ur hi,turi,
<br />:•lop.: ..f l.d:l.
<br />I'hu flel.i iuspc~tiuu vi the slide area resulu~d in the tullu,~ing
<br />uLs.rr\ation,. The depth of blockage at th e thre::d ur thr suc:.m likcl> rau,~,on
<br />t'~.,iu :;L„iL Ic. itocl :il LII~ upSlrLanl Side LO o\e:' JU lee[ aC Lha du r. rl~Lre 11II
<br />side. Lenglh u r' the blockage Is 1'~S -1 ~0' . ']she area of inundn[.ion xbo~ e the
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