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GeoHydrologic Consultants, Inc. BonnglWell Number EW 5S Page 1 of ? ' Protect TOC#171 Owner Thnfty Oil Co Location 1250 N Wilson Way Stockton CA Protect Number GHC 1252 Date Drilled 02/23/05 Total Depth of Hole 60 ft Surface Elevation Not Surveyed Depth to Water 48 48 ft ' Screen DIA 4 Length 20 Slot Size 0 010 Casing DIA 4 Length 40 Type 2112 Sand Drilling Company West Hazmat Drilling Corporation Anaheim CA Drill Method Hollow Stem Auger ' Driller Rob Log By Jason E Shaw 2 (o U R Well Construction a� N o Sod Description a E a E o 0 m In N = m C7 "� 12 Dia Sandy Silt (ML) Brown(10YR 413) slightly moisl 10-15% Flush well box very fine to fine sand moderately plastic slit very stiff ' Concrete 5 12 Sandy Silt (ML) Brown(10YR 413) slightly moist 10-15% lea 12 very fine to fine sand moderately plastic silt very stiff 12 ' Bentonite Grout 10 9 Sandy Silt (ML) Brown(10YR 4/3) slightly moist 10 15% 125 10 very fine to fine sand moderately plastic silt very stiff 12 15 10 Sandy Silt (ML) Brown(10YR 513) slightly moat 15-20% 113 'I 4 Dia 10 very fine to fine sand moderately plastic silt with fine Sch 40 10 gravel very stiff PVC Blank ' Casing ' 20 18 Sandy Silt (ML) Pale brown(10YR 6I3) slightly moist 20 146 20 25%very fine sand low to moderately plastic silt very stiff 22 ' 10 Borehole ' 25 18 Sand (SW) Dark yellowish brown(10YR 414) slightly 285 zo moist fine to coarse sand moderately dense 30 ' 20 Sandy Silt (ML) Brown(10YR 513) slightly moist 15-20% 598 24 very fine to fine sand low plasticity silt trace tine gravel hard • 1 35 Silt (ML) Yellowish brown(10YR 613) slightly moist low 251 ' 20 to moderately plastic silt very stiff 24