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i <br /> M <br /> Drilliing Log <br /> GROUNDWATER TECHNOLOGY Monitoring Well - <br />� ! CY 9 MW-13 <br /> Pro)ec# Chevron - Stockton Owner Chevron USA Products Cc See Site Map <br /> 08 <br /> Location 45 East Hardino wav Project No 02070 3399 Date drilled /30/93 For Boring Location <br /> Surface Elev Total Hole Depth 65 ft Diameter 7 rn ft <br /> Top of Casing Water Level Initial 55 ftStatic COMMENTS <br /> Screen Dia 2 rrn Length 25 ft <br /> Casing Dia 2 in Length 40 ft Type/size 0 020 in <br /> Type Schell 40 PVC <br /> Filter Pack Material f3 Sand Rig/Core Type C47 /SDll1 spoon <br /> Drilling Company Solis Ex Services Method Hollow stem auger <br /> Driller Mrke Duffv Permit # <br />� Log By Rot Hertalo <br /> Checked By Ed Simons License No,RG42`2 <br /> FHARMIJ13/Csb <br /> .0.-. 2 O c u <br /> D p cyrs <br /> ni o o :E @ <br /> a <br /> �,`" U a U Description <br /> CL a s a n ro.o <br /> Qo (Color, Texture, Structure) <br /> U NmK u) Trace < 10%, Little IDX to 20%. Some 20% to 35%, And 35% to 50% <br /> - -2 <br /> 0 <br /> A=o 10 inches of asphalt over gravelly sand backfill <br /> 2 < ` Dark gray fat CLAY 80% clay, 20% silt, trace fine sand <br /> < c CH (slightly moist, very stiff, medium plasticity no hydrocarbon <br /> 4 < <br /> Mw- <br /> odor) <br /> < c t3-5 <br /> 0 e Yeliow brown silty SAND 60% fine sand, 40;; slit, trace mica <br /> 6 c c is {sliohtly moist to <br /> t8 dry very dense friable no hydrocarbon <br /> 5M odor) <br /> c < <br /> 8 < < <br /> Mw- <br /> 10 < c 13-10 Yellow brown mottled with white sandy SILT 50% silt 30'%, fine <br /> 0 6 sand 20% clay trace medium sand trace caliche veins <br /> < c ii (siipntiy moist to dry, low Alastrcity, brittleno <br /> 12 hydrocarbon odor} <br /> , <br /> 12 < <br /> < < <br /> 14 < ML <br /> Mw- <br /> < < 13-15 <br /> 0 I B (Grades yellow orange clayey SILT 65% silt, 30% sclay 5% fine <br /> 16 < < i 14 sand trace mica) <br /> I 15 <br /> I <br /> 18 < < � <br /> < < <br /> Mt- <br /> 4 <br /> - j <br /> 2 0 < c 13-20 <br /> < < 1 0 i 8 Yellow bro►%n SAND gyro fine sand 5.fisilt trace mica (slightly <br /> 5 moist medium dense friable no hydrocarbon odor) <br /> l � I 5h <br /> 22 ` < i (Graces with gravel 609. fine sand 20% medium sand 10% coarse <br /> sand 10% fine subangular gravel) <br /> 24 <br /> 110 7n/100 I '11 -- C <br />