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George's Service Project Name Page 1 of 1 Borehole No, MW-4
<br />Date 4/30/97 Project No 425.2 Contractor V&W Drilling
<br />Field Geo/Eng M. Niemi Drilling Method Hollow Stem Auger
<br />Geological Technics Inc.
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<br />Area & County Corner of Durham Ferry Rd. and Hwy 33/ San Joaquin Co.
<br />Borehole Dla 8" Tot, Depth 22' Tot, Casing Depth 22' Casing Dia 2" Screened Interval 22'-7'
<br />Filter Pack 22'-6' Annular Seal 6'-4'Slot Size 0.020" Grout 4'-0' Water Depth +/-7'
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<br />Description
<br />Remarks
<br />OVM (ppm)
<br />-
<br />_
<br />_
<br />-
<br />V
<br />_ 0915 5
<br />5
<br />= CL CLAY—(5YR4/2, plastic, slight sweet
<br />hydrocarbon odor, very moist,
<br />26
<br />_
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<br />—
<br />=
<br />-- =
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<br />only
<br />enough sample for geology.
<br />— 0921 1
<br />1
<br />1 •6"
<br /> SM SILTY SAND—(5Y5/6) fine grained, top 1 8—top 6"
<br />1 bottom 6" —
<br />_
<br />_
<br />E=
<br />_
<br />—
<br />stained grey with product, gasoiline
<br />odor, wet.
<br />_ 0926
<br />3
<br />3
<br />4
<br /> • . SM SILTY SAND—(5Y5/6), fine grained, more
<br />silt, plastic.
<br />_
<br />—._— ...
<br /> — .... :7..- =
<br />=
<br />_ 0930
<br />3
<br />4
<br />6 -
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<br />
<br />=
<br />
<br />—
<br />S SILTY SAND—(5Y5/6), fine grained, less
<br />_
<br />_
<br />_
<br />=
<br />silt, slightly plastic, sample slid out of
<br />spoon so geology only.
<br />_
<br />_
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<br />Notes: E Annular Seal FT Grout SAND CLAY ,V//'
<br />t :E .j SILT Sample Submitted to Laboratory
<br />0
<br />10
<br />15
<br />20
<br />25
<br />30
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