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CS1 GeoStrateg)es, Inc. Log of Boring U-3
<br /> PROJECT FORMER UNOCAL STATION 00187 LOCATION 437 E Miner Avenue, Stockton, CA
<br /> GSI PROJECT NO 4827703 CASING ELEVATION 1125 (MSL)
<br /> DATE STARTED 7/6/94 WL (ft bgs) 48 DATE 7/7/94 TIME 803
<br /> DATE FINISHED 7/7/94 WL (ft bgs) 4717 DATE 7/8194 TIME 1437
<br /> DRILLING METHOD 8 in Hollow Stem Auger TOTAL DEPTH 55 Feet
<br /> DRILLING COMPANY West Hazmat Drilling GEOLOGIST Steve Carter
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<br /> M o WELL DIAGRAM
<br /> 4 I- w w GEOLOGIC DESCRIPTION
<br /> x CL p ` nc 0.0. U
<br /> Uj
<br /> CL u 4O S 4
<br /> cc
<br /> O' a m (n rn 3 ch
<br /> CL
<br /> 5 9 35 U3-8 5 CLAY (CL) - yellowish brown (IOYR 5/0). hard, dry
<br /> to damp, low plasticity, 100% clay
<br /> 10 "
<br /> 17 23 1.13-115 SANDY CLAY (CL) - yellowish brown (10YR 5/6), a'
<br /> very stiff, damp to most, low plasticity, 60-85% v
<br /> clay, 35-40% fine sand „ w
<br /> 15 CLAY (CL) - yellowish brown (1OYR 5/6), very stiff, v
<br /> 3i1 26 U3-16 5 moist, low plasticity, 95-100% clay, trace to 5% fine v,
<br /> SC sand
<br /> 20 ro
<br /> CLAYEY SAND (SC) - yellowish brown (tOYR 5/4), c
<br /> 21 29 U3-215 / medium dense, moist, 65-70% fine to medium sand,
<br /> • /� CL 30-35% clay
<br /> 25
<br /> 88 51 U3-26 0 CLAY (CL) - olive gray (5Y 5/2), hard, moa
<br /> moist, low to o
<br /> U3-28 5 medium plasticity, 104% clay, lightly to faintly mottled
<br /> with Fe-oxide staining, faint product odor
<br /> 30 33 8 U3-315 color change to gray (5Y 5/1), light Fe-oxide 77
<br /> 1
<br /> 101 staining, faint product odor
<br /> 35 51 43 U3-38 5 SANDY CLAY (CL)- gray (5Y 5/1), hard most, low c
<br /> plasticity, 80-85% clay, 15-20% fine sand, faint o — ro
<br /> product odor
<br /> 40 = b
<br /> product odor
<br /> 156 44 1.13-415 4 = a
<br /> SC _
<br /> 45 CLAYEY SAND (SC) - dark gray (5Y 4/1), dense,
<br /> 83 41 U3-48 5 / moist, 80-85% fine to medium sand, 10-15% clay, - o
<br /> / SH-SC product odor
<br /> ro —
<br /> c =_
<br /> 50 113-510 SAND WITH CLAY (SW-SC) - very dark gray (2 5Y _
<br /> 70 41 N3/0), dense. saturated, 90-95% fine to coarse —
<br /> rounded sand, 5-10% clay, product odor
<br /> 55- 41 88 U3-54 5 CL
<br /> 91* CLAY (CL) - dark greenish gray (5GY A/}), hard,
<br /> moist, low to medium plasticity, 85-90% clay, 10-15%
<br /> fine sand, product odor
<br /> 60-
<br /> 0( - converted to equivalent standard penetration
<br /> blows/ft}
<br /> •
<br /> 65-
<br /> 70
<br /> JOB NUMBER 4827 703 Page I Of f
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