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2006 Subsidence and Geologic Feld Observations <br />Box Canyon. Wnst Flatiron, Apacho Rocks, and South of Diade Mining Amas <br />Soil and collu~•ium drri~ eil t~um clays and .ills of the Was;uch and t lhiu ('reek Formations werr <br />exposed along the drill ru:ul. r'hr ~crll pad tiff ~1D\1' 2?-11=1 was cxraeatrd into a sihy wndstonr <br />outcrop at rftr top o(the <)luu ('reek Member otthr \te~acerdc Iv,rnt;uiun <br />4.5 Traverse F-F' <br />I'rt~rnr F-F~ hrguts ,tt the main li,rk in Jnll roads at ;\ (of :1-;\~), trends nonheasncard, then <br />southward, and ends at reclaimed JI[)11`,'_-3-q1, Z~3-(1?, and _'4-Ili, l hr road and ++ells south of <br />ibis point have burn reclaimed. the Jnll road transrcts soil. culluvium. and lurid outcrops of <br />clips :utd silKtone ul'thr \4asatch and t.)hiu Creek Formations ahwr mined lung call panek 24 <br />and 33. <br />r hr uVCrhurilrn depth to the E3-Scam ~•arties tiutn 2.1$(1 to ?,?>ll feet. Vu ,ubsidence ti:dures <br />~~•crr ul+sin'~ cd. <br />4.6 Traverse G•G' <br />Tru~rrsr C.-U' begins al pumt A iot :~--\') ahn~c the southern edge of ntine+l Inn~~+.dl p;mel '-3 <br />and encl. at the ti+rk in the drill roads ah,+se the southern edge of mined k+ngt~~all panel I-l. Sutl. <br />cullu~ium. :+nd lural bedrock of the (>hio ('reek and (3an•en .4lenrhrrs of the \trsa~•cvdr <br />Purtnation are exposed in the drill road. <br />hhc uxrrhurdrn depth to the B-scum ranges het~~rrn 1,625 and 2.1'S tort. \u subsidence <br />Icatures +cere „h,cr~•cd, except the crack at Location '. <br />4.6.1 Location 7 <br />l_ocahon - I. ;+ suh.idrn.r cru.k luc:urd I,rim:uilp m >,al :rod rullunum. ~.,hi~h trend. rou~hlc <br />purallrl to the lung direction ui mined long«all panel I~l (Figure I6). The crack is -1 to 6 indu•s <br />~~idr in the soil and culluvtum. natn~as to about I inch at the top ot'thr sandstone. and hc~ronus <br />a closed tctrturr set a tc+t fcut below the tap ot'thr wndstonr. <br />831-032.750 Wnght Water Engincers. Inc. Page 20 <br />Dtrcember 2006 <br />