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Boring Number, MW-4 Aft 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 & Amodor 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 /> ~ d a <br /> a <br /> L 7 0 �. O C p ++ V O <br />' a� z v v n Soil Q Well <br /> °' m �' CE E 67 Description N a H Comments <br /> 5 a o r w v o c „ Construction <br /> E m v U, woo w n <br /> to U <br /> is 22 = <br /> 61 i 33 18 18 ODti SILT greenish—gray very moist, ML <br /> +n 36 61 hard tow plasticity Casing lnstatlgtton Data <br /> 62 62 — 2—inch PVC <br /> = 0 020—inch screen <br /> 63 83 <br /> 64 64 <br />' 65 � 14 65 <br /> 66 so 8 18 0 66 SAND fine— to coarse—grained dark Sw — <br /> reddish—brown wet, very dense, thin - <br /> 87 67 silt lenses <br /> t 68 68- <br /> 69— <br /> 8 69 69 <br /> 0 28 — <br /> 70 r; 5 70 <br /> 0 12 12 O <br /> 71 71- <br /> 72 72 = <br /> 73 73 <br /> 74 74 CLAY dark greenish—gray, FeOxstains — <br /> n 16 organic blebs damp, hard low to = <br /> 75 I 22 18 18 o 75 medium plasticity CL <br /> in 30 Total depth 75 feet bgs <br /> 76 76- <br /> 77— 77- <br /> 7a— 78 <br />' 79 79- <br /> 80— 80- <br /> 81— 81- <br /> 82— 82- <br /> 83— 83- <br /> 84— 84 <br /> 85 85 <br /> t 86 Be- <br /> 87- <br /> 01 <br /> g87 0 90 <br /> Page 3 Of 3 <br />