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77-W) <br />Mr. .lay Becker 1nr i 1 '•1, 19"7,4 <br />Besides the soil burings, several hand ,..,f;ar f,robe� were <br />made to a depth of 3 to 4 feet. Ilrc• probes were Illadc. with <br />the 11i-inch diameter auger. 1►ue to .::c,nl,le rnixin►;, ',Oil <br />strata and classifications are somewhat approximate. <br />Mineral soils encountered in the I,orinfts ►:erc► i�lr:r1l� ;rnd <br />manually classified in the field b� the crew chief in•:rccor- <br />dance with ASTM ll.:487 "Unified ';oil,; t kr—,sificatinn <br />and ASTNI U?488 "Itcconunc-nded Tracti(•_• I* or l isII:II and M:rIIII,II <br />Description of :foils". A pop;• of A-)],11 Ir.:•1S^ is at tachc•d. <br />All samples were then returned to the 1 -borcltory for verifi- <br />cation of the field classifications by a '-*,oils 17111;..,jeer. <br />All samples will remain in this office for a period of t,tt <br />days to be available for your examination. <br />Immediately after taking the final Sctr1111C ill tllc• bOttc,rn of <br />the boring, the boring was probed with t!rc• he flow- :terr <br />auger in the ground to check fltr I;rutill tlA ltrr. In addit fur►, <br />immediately after removal of the auf;er, thein;; t�cls <br />probed and the depth to cave-in and tlic• I,resrn� c or absence <br />of water was noted. 'file boring was tiwn im►ncdiatcly I�.►c k <br />f- i 11.1 a ,.l . <br />RESULTS <br />The boring; encoujitered ", fCet 1,f tI)h . i 1 ind sand n►•(•rlviII <br />sand)• clay gIacial till to a depth of Ic--t lrnclerl;rin 1j%• <br />layers of s i l ty sand, c l aycy Si l t and sand". s i l t. 1t It <br />depth of 18 feet the boring encountered :t coavr4c•r ;ilt►• <br />kind. Tile sandy cla}' glacial till was ker►• St i I'f ;Ind the• <br />underlyi►tg layers of si 1 t>' sand and re rrt,clium <br />dense or rather stiff. <br />Groundwater was measured in the bore I!olr It 2.8 '.'c•et below <br />the surface (elevation 94. 1) 15 minute:: after ,ovipietion. <br />This is slightly higher than the current lake level. wateI- <br />was encountered about o inches below the-llrface in tile• hand <br />auger probes. This would ;ugj)c,,;t tivit water rr:I, he "pc-rc•lle•d" <br />in this area. 1:111ctuat ions in f;rnlrndt ;ltc r le►•cl v occur <br />with annual and seasonal variation•;. <br />I'Ite results of, the hand ;cr-,• .l• fol imw. <br />IiA-I I1-1' iIt••• `,:mdv c•I:I\ to irtt• l)n•,c•\ <br />Ind, I�iat 1., ,..It�•r-bc;lrirfit r lur•;M' I I <br />1`IOV41;, ,..ltt'I!,c•:II Int;. <br />BM1111 <br />ENGINEERING TESTING <br />