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<br /> TERRA VAC CORPORATION LOG Or-MONITORING WELL MW-12
<br /> 14788 W)cks Boulevard, San Leandro, CA 94577 Page f of 1
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<br /> F MATERIALS DESCRIPTION WELL DIAGRAM
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<br /> PAVEMENT SECTION
<br />} ) CL
<br /> CLAY, sill {30-35%}, sand itrace), fine, o
<br /> dark yellowish brown (10YR4/8) with
<br /> gray mottling, very stiff, damp, medium v
<br /> 29.4 29 CL
<br /> MW12-4.3 plasticity
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<br /> A5 above, gravel (trace), fine to
<br /> 25.5 46 MW12-9.810medium, subangular to rounded
<br /> 5M
<br /> SAND, fine, sill f20-30%1, clay {trace},
<br /> dark yellowish brown 110YR4/6) grades —
<br /> to olive brown (2.5Y4/4), dense, damp,
<br /> iron staining w
<br /> —
<br /> ML v4
<br /> 32.9 19 MW12-I4,4 SILT, clay (30-35%), sand (trace), fine, = v
<br /> �� A dark yellowish brown 110YR4/4), very o
<br /> (] stiff, wet, low plasticity, mottling m
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<br /> 20 AS above, light olive brown, (2.SY5/3) _
<br /> 43.5 18 MW12-20.9 to
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<br /> SM o =
<br /> SAND, fine, silt (30-35%), clay (50-15%),
<br /> ' light olive brown (2.5Y5/3), medium o
<br /> dense, wet _
<br /> ` 52.2 32 MW12-24.9 2� SP =
<br /> SAND, fine, trace fines, light olive brown
<br /> t (2.5YS/2), dense, wet grades to fine to —
<br /> f medium with trace coarse — — —
<br /> SM —
<br /> SAND, fine, silt (20-30%), dark grayish
<br /> brown (2.5Y4/2). medium dense, wet _
<br /> 39.1 38 MW12-29.9 30 1 ML
<br /> SILT, clay (20-25%). sand (trace). fine,
<br /> olive brown (2.5Y4/3), hard, wet, low
<br /> plasticity, iron mottling
<br /> Bottom of boring at 30 feet.
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<br /> PROJECT Chevron 5S ,F9-4054 DRILLING COMPANY _West Hazmat Drilling Corpoation
<br /> F. LOCATION 2103 Country Club Blvd:, Stockton DATE DRILLED February 8, 1996
<br /> JOB NUMBER 30-0212 SURFACE ELEVATION Not surveyed
<br /> r GEOLOGIST Cliff M, Garratt TOTAL DEPTH OF ROLE 30 Feet
<br /> DRILL RIG 8 in. dia Hollow Stem Auger FIRST OBSERVED GW 18.75 Feet
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