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Wright Environmental Servic "Inc. Tracy, CA & ratory Boring Log pg 1 of 4
<br /> Project No. 4062R Boring/Well No. MW-1 Well Installed: 2" dia. Sch 40 PVC
<br /> Client:Linden School District Date Drilled: July 27, 1995 Total Depth: 119.5'; Casing Depth: 118'
<br /> Location: 7007 Pezzi Rd, Stockton, CA Logger. CMP Screen Length and Size: 20' of 0.020"
<br /> Drilling Method: 8" OD Hollowstem Driller. Spectrum Top of Sand Pack: 96'; Sand Size: 2/12
<br /> Perrrdt: PNS/EHD #005750 Top Bentonite: 93'; Cement Grout Seal: 93' to V
<br /> Water Levels: 1st Enc: 105' Static: 104.35 Surface vault box
<br /> @8:21 am 7/28/95
<br /> Sample Blow Q Depth Borehole
<br /> No. OV Count (ft) Lithology Log Completion
<br /> Asphalt and Subgrade
<br /> ML - Sandy SILT, dark reddish brown 5YR3/4, fine snd up to
<br /> 20%, damp, drills firm.
<br /> Mw-1-1 i grab same as above, drils firm
<br /> AAAA
<br /> AA
<br /> 10 same as above, fine to medium sand 20%, rare root holes and ~ "
<br /> A~A
<br /> MW-1-2 3 28 caliche, hint of crude bedding, very stiff.
<br /> w"w
<br /> w"w
<br /> w"
<br /> Aww
<br /> A~w"
<br /> 15 ML - Sandy SILT, dark reddish brown 5YR3/4, sand to 40% ��AA
<br /> Mw-1-3 3 24 dissmeinated, cobwebby caliche, some sand grains float in matrix,
<br /> very stiff, damp.
<br /> "~
<br /> 20 SM - Silty SAND, 10YR4/3, brown, fine to med. sand to 80%,
<br /> Mw-1-4 3 22 silt 20%, crudely bedded, sand in grain to grain contact, 2"
<br /> thick silt bed at 21.5 feet, medium dense, damp.'
<br /> AA
<br /> .4
<br /> ~"~
<br /> 25 SM/ML - Interbedded Silty SAND and Sandy SILT, brown,
<br /> Mw-1-5 3 42 10YR4/3, fine sand to 80%, silt 20 %, silt interbeds contain
<br /> dissem. very fine sand, faint color defined beds, dense, damp.
<br /> w"w
<br /> A~A"
<br /> 30
<br /> Mw-1 3 24 SM - Silty SAND, dark yellowish brown 10YR4/6, sand to 90%,
<br /> massive, medium dense, damp. ~"
<br /> wAw
<br /> 3
<br /> MW-1-71 3 50 ML - Sandy SILT, dark yellowish brown IOYR4/6, sand 30%, silt ."r" %%.
<br /> 70%, sand grains in silt matrix, crudely bedded, very stiff,
<br /> damp, becomes sandier and yellowish red, 5YR5/6 at 36.5 feet
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