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SPRING 2007 Subsidence and Geo~og,c Feld Observa; ors <br />&nx Canyon anc South M Dw~de Mmmp Areas <br />lllrel.'hl!n+ +llt,~,l`St III:11 fhefl' ha. heCll ~ItIIC l'ltilll~!e O\'cr the past l\YU \'e:Iri. OIhef :1pIY,Ire11I <br />LhaI1 L'C~ ilpplar k~ Ill' Illy re5ll ll U1 +ea~dlla~ (III II'felleCa Il.e„ ^V IL'a\ l'S Utl the 3~pe11 lfeel, il1t 111, <br />cn ~ as (ggx~:ed ul uddluunal nlcklall land>lidc orrurnnc•c> . <br />.. `, ,, <br />Figure 13 Sou:h;;rc v c~a Irom' Cl <br />maS'.P~0 'unndStUnY. r41! -d py. Qn~0 <br />irir ata9 about '.PC~~ hn' aC a•.e 'he 'arq; <br />irea ah~a9 the ru. kral~. ~~~•vs :e a•e:o -~1 <br />5.4.2 Location 7 <br /> <br />the spnnp of 2'J07 of a rocklai4Wndshce area m a <br />'.lember of the 0.!esaverde Formaucn The a•ea Is <br />roan oil'.ars of mmec iongwa'- Panel ?2 The excavated <br />r nghtl is MDN' 22-05 <br />Llx'an~m _ rcprcxnt+ a nc\\ I)• oh+cn cJ ,erlc+ of cracks mar the >ixuha«t alrncr of 1hr dell pad <br />lirf \11 )~~S ~4-1 Lt :Illd I`)-0?. .I III> >Ile 1} ~Ui tiled ,Ner the iCntral ppflNrll tll Ihl C:1+1 Cllll ,II <br />luncl\all I+ancl Il> \\hlch \. a+ nnned through ul thr +pring of _Unh. Thr 1+\crbunirn depth al the <br />13-Scam al chi. lucahon 1, appnl~unately ? ~~U fort. <br />I hls particular drill pad \c:t+ crr:ucd u+ine a large anunlnt of till pnnicularh' on thr south .Ind <br />\Ir+l .Ides Ilhilr the nurthra+t comer l+1 thr pad apprars to h;nr ixen cw unu sandamlc :md <br />+111+nalr h('(Irnck units of thr ~\'aa;ltch Fr~mlaliun. It i. ahoce the thicke+l till :Irea that thr <br />ill 11" trrndnlg crack serios \eas obsrn rd Th..uulhrm r.eposurc of 1hr crack a as oh+rrccd In <br />ha\c a ~•q uu•h oltrt lu thr s(mth\ccst; a rharucterisuc ron+lstrnt \cuh srltlrnlnnl rather than <br />mine wh>idenrr (higure la). <br />83?-032 780 th'rrght Water Engineers, Inc Page 21 <br />July 20~~7 <br />