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® GROUNDWATER <br /> ❑ TECHNOLOGY,INC. 2 Drilling in <br /> Monitoring Well 9 LC <br /> 10rolect PG do E / TRACY Owner PACIFIC GAS do ELECTRIC CO. [Notes <br /> ketch Map <br /> ' Location TRACY,CA Project Number 203-799-8258 <br /> Date Drllled /4/88 Total Depth of Hole 26 5 FT Diameter 10.5 IN <br /> Surface Elevation Water Level Initial 9.5 FT 24—hour <br /> Screen: Dia. 4 IN Length 20 FT Slot Size .0201N <br /> Casing: Dlo. 4 IN Length 5 FT Typ e PVC <br /> Drilling Company SIERRA PACIFIC Drilling Method HOLLOW STEM AUGER <br /> Driller LYNN PERA Log by C. DeSOCIO <br /> Leak in headspoce <br /> Geologist / Engineer License No. 4S9'¢ ----- container <br /> I <br /> e g Description/Soil Classification <br /> 1 (Color,Texture,Structures) <br /> ' 0 3 inch asphalt over 6 Inch bole course <br /> ' CL7, Black silty clay <br /> 2 ,R (Medium stiff, moist, strong odor—Lampblack [PNQ <br /> _ o p (Grades lighter color to brown) <br /> +' Brown—gray silty clay <br /> 4 (Medium stiff, moist, slight product odor) <br /> •S <br /> 6 <br /> 666 A Green—gray silty clay <br /> L (Soft, moist, strong product odor) <br /> 8 ,Y B (Grades very moist, strong product odor) <br /> 466 <br /> ' <br /> 538 C Encountered water 1/4/88 (1440 hours)10 � '. o <br /> ,f CL Brown silty cloy with minor sand <br /> Y` s412 E (Medium stiff, wet, product odor) <br /> 12 .. (Grades grayish wuth tine to medium gravel, wet, strong <br /> 989 F 1 product odor) <br /> 14Grades sandy, less product odor) <br /> Grades less gray to brown) <br /> 't Grades no product odor) <br /> 16 S{ 10.8 G Grades finer sand} <br /> u Fr <br /> f, <br /> 18 - ;=t Brown very fine sandy silt <br /> (Soft. wet, no product odor) <br /> ' L <br /> 20 t,} H <br /> Brown sand <br /> ,f <br /> 9w., (Well sorted, loose, wet, no product odor) <br /> 22 n 's t.A Brown sand with gravel <br /> >f (Well graded, medium dense, wet, no product odor) <br /> t• :t .SELLS... <br /> ' 24 ;r .. Brown sand <br /> • . P� Well sorted, loose, wet, no product odor <br /> !� RJ ■ dw w J A� <br />