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Boring Number, MW-4 HORIZON ENVIRONMENTAL INC <br /> Job Number 1641 13 <br /> Site Location Beacon #641, Stockton, CA <br /> Drilling Company Woodward Drilling Drilling Method 8—Inch Hollow Stem Auger <br /> Drilled By Erik & Amador Sampling Method Split—Spoon Sampler <br /> Date Drilled 09/16/97 Total Depth 75 Feet <br /> Logged By L Smith Depth To Groundwater 56 Feet <br /> a C C <br /> E m m c O o <br /> c a 3 o p o <br />' aIJ! z c°� r- nZ Soil a� Well o ?' X ; o 0 Description v Comments <br /> c o L 0, „ o; F v Construction <br /> a <br /> B m r N" a a <br /> in c U aoe <br /> 1 � <br /> 1 CLAY, black, moist firm high OH ,�� • Casing Installation pato <br /> 2 plasticity, abundant organics '• t <br /> 2 i 2-inch PVC <br /> i� 0 020-inch screen <br /> 3 3 ` <br /> 11 <br /> •. <br /> 4 4 <br />' S 5 ..• s <br /> I) 161 18 12 0 SILTY SAND dark reddish-brown, damp, + ! <br /> 6 N 13 6 medium dense SM 4 , <br /> a <br /> 7 7 <br /> 8 6 <br /> 9 9 •� <br /> 10 10 • a• <br /> 0 5 CLAYEY SILT reddish-brown, occasional <br /> 11 vi 9 18 i6 0 11 groins to 1/8", damp stiff low to ML + •• <br /> medium plasticity, organic blebs <br /> 12 12 ' <br /> 13 1.3- <br /> 14— <br /> 3 14 14 <br /> 15 n 23 15 i a •� <br /> 35 18 7 0 SANDY SILT, ton, very fine-grained, <br /> 16 N 50 16 dry very hard, low plasticity + <br />' 4 <br /> 17 17 , <br /> 18 18 • r <br /> a <br />' 19 19 . f• <br /> 20 20 r . <br /> N 16 1s 16 0 CLAYEY SILT, dark reddish-brown damp, ' <br /> 21 vi 23 21 hard, low to medium plasticity <br /> I22 22 ' •• . + <br /> 23 23 <br /> r •• <br /> 24 24 •.a <br /> 25 25 •� .2 <br /> -n 11 <br /> j� 26 18 16 0 SILT yellowish-brown, dry, very hard, ' <br /> 26 w 30 26 law to medium plasticity -r <br /> 27 27- <br /> 28— 2s- <br /> 29 <br /> 8 29 29 ­ <br /> SILTY CLAY, yellowish-brown, FeOM staining, CL <br /> 30 damp, hard, medium plasticity <br />' (Boring Continued On Next Page) Page 1 Of 3 <br /> 1 <br />