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Client: Chevron Environmental Management Well/Boring ID:MW-7B <br /> Site Location: Borehole Depth: 38 feet <br /> Chevron Service Station 9-2033 <br /> 508 West Charter Way <br /> Stockton,California <br /> `m a <br /> � a <br /> c <br /> =3 a tm E <br /> ZF- a o Well/Boring <br /> O_~ n a <br /> Stratigraphic Description o Construction <br /> am .2>o <br /> 0 <br /> a w E E amo <br /> i 0 <br /> W w in in 00 Z a C7 <br /> 8 Light brown fine to coarse SAND(SP),hydrocarbon odor,damp. <br /> -5 <br /> 12 <br /> 6 16-18 2.0 15 27 3429 <br /> 72"light brown CLAY(CL),little fine to medium Sand,hydrocarbon odor, 2"dia.Schedule 80 <br /> PVC riser(0'-33' <br /> 7 - damp. bgs) <br /> 7 18-20 2.0 8 15 3579 -- <br /> Gil 2585 <br /> 7 Grades with little fine Sand,trace Silt. <br /> 9 <br /> 8 0-22 2.0 13 22 1778 Steel conductor <br /> casing(0'-25'bgs) <br /> _10- <br /> 4 Grades with little fine to coarse Sand. <br /> 5 1508 <br /> 9 2-24 2.0 7 12 1689 <br /> 4 Grades to Dark brownish-grey CLAY,trace Silt,trace fine Sand,damp to moist. <br /> 4 <br /> 29 10 4-26 2.0 4 8 1806 -- <br /> 8 Grades to Brownish-black CLAY,trace Silt,trace fine Sand. <br /> _15 9 <br /> 11 6-28 2.0 12 21 1797 -- <br /> 4 = Grades to Dark grey CLAY,little fine to coarse Sand. <br /> 19 _ <br /> 12 8-30 2.0 20 39 1504 <br /> 30 <br /> Grades with fine to medium Sand. Hydrated bentonite <br /> seal(29'-31'bgs) <br /> 13 30-32 2.0 NA NA 1657 <br /> 15 Dark grey fine to coarse SAND(SC),little Clay,trace Silt,hydrocarbon odor, <br /> 20 damp to moist. <br /> 14 32-34 2.012 32 1591 2/12 Sand pack <br /> (31'-38'bgs) <br /> 4 Grades with fine to coarse SAND,moist. <br /> 4 <br /> 35 15 4-36 2.0 5 9 1691 2"dia.Schedule 4 <br /> PVC 0.010"slotted <br /> screen(33'-38' <br /> bas) <br /> Remarks: bgs=below ground surface;NA=Not Applicable/Available;AMSL=Above Mean Sea <br /> Level.Odorless unless stated otherwise. <br /> ARCADISNorth ing/Easting Datum is NAD83. <br /> Infrastructure,environment, fadhties Elevation Datum is NAVD88. <br /> Project Number:B0045977.0000.007emplate:G:\ENV\CHEVRON\LIBRARY\LOG PLOT\2005 Templates\boring_we112005.IDF Page:2 of 3 <br /> Data File:MW-7B.Dat Date:6/25/2008 Brett Krehbiel <br />