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Geological Technics Inc. <br />„„ <br />Borehole ole Log„„„„„ „„ „„ ,,, „„„„,„„,„,„„ <br />Project Name George's Service Borehole No, MW-102 Page _2__ of' 2 <br />Project No 425.2 Date 4/29/97 Contractor V&W Drilling <br />Area & County Corner of Durham Ferry Rd. and Hwy 33/ San Joaquin Co. <br />Field Geo/Eng M. Niemi <br /> <br />Drilling Method Hollow Stern Auger <br /> <br />Borehole Dar <br />Filter Pack <br />12” 0-39' <br />39-501-ot, Depth <br />Annular' <br />50' Tot, Casing Depth 50' Casing Dla, 2" Screened Interval 47.5-45' <br />50-43.5' Seal 43.5-41' Slot Size 0.020" Grout 41-0' Water Depth +/-7' <br />-, (I, cu a,-,.._ <br />> <br />._. <br />-(5.. <br />c5., <br />- cs b v) z <br />a) <br />E <br />1---- <br />_La <br />0 E <br />XI 8 <br />u <br />— --: <br />--, ° ---' -i-' cu w <br />r=1 <br />..- n a- _= <br />E "P u , <br />V) <br />L) Description <br />Remarks <br />OVM (ppm) <br />_ 0708 sw HEAVING SAND—medium to very coarse <br />grained, geology sample only. <br />No hydrocarbon <br />odor <br />— <br />_ <br />_ <br />_ sw HEAVING SAND <br />_ — <br />— 0801 SANDY CLAY—(10YR5/8), fine grained <br />sand. <br />— 0926 50 /4 .— --- = CL CLAY—(2.5Y6/8), very plastic, pieces of <br />wood from auger plug. / <br />_ 0951 3 <br />3 <br />6 <br />/ SAND—fine to coarse grained, heaving, <br />limited core. <br />_ <br />— 1004 <br />10 <br />38 <br />47 <br /> -4c '''' <br /> —::- <br />c'u u u C <br />0;,- „ <br />GC CLAYEY SANDY GRAVEL—fine to very <br />coarse sand, gravel to 25mm. <br />_ <br />_ <br />_ <br />_.... —.... <br />_ 1023 <br />15 <br />30 <br />40 <br />CL CLAY—(2.5Y6/8), plastic. <br />_ <br />_ <br />— <br />GRAVEL <br /> <br />Notes: ' SAND ------ CLAY 2,22 Annular Seal n Grout <br />0 0° Sample Submitted to Laboratory LE j SILT <br />3 <br />3 <br />40 <br />45 <br />50