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ti) <br />%GROUNDWATER <br />O0111OD111 TECHNOLOGY <br />Drilling Log <br />Monitoring Wel[ MW -1 <br />Project Chevron -Charter Way Stockon Owner Chevron_ USA Products Company <br />See Site Nap <br />Location 508 Charter Wim; Stockton, Ca Prof No 02070 0071 <br />For Boring L oca tion <br />COMMENTS <br />Surface Elev Total Hole Depth 515 ft Diameter 8 on <br />Top of Casing Water Level Initial 35 ft Static <br />Screen Dia 20 Length 20 ft Type/Size 0 020 in <br />Casing Dia 2 fn Length 30 ft Type SCh 40 PVC <br />Fill Material #3 Sand Rig/Core CME-75/SP11t „S,aoon <br />Drill Co SES, Inc Method 140llow Stem Au er/PID <br />Driller Mike Duffy Log By Bruce Beale Date 03/15/95 Permit # 5179 <br />Checked By Ed Simonis License No RG#4422 <br />O <br />0 o o <br />V <br />h <br />Description <br />Q" <br />E <br />2a <br />a° <br />E s V <br />n� <br />_- <br />N <br />(Color, Texture, Structure) <br />L) <br />10 ° °C <br />�t <br />n <br />? <br />Trace < 10%, Little 10% to 20%. Some 20% to 35%. And 35% to 50% <br />-2 <br />2" asphalt over 4" base coarse <br />Gravelly silty sandy CLAY (10,10,40,40) brown -black, moist, slight <br />2 <br />< <br />< <br />hydrocarbon odor <br />CL <br />< <br />c <br />4 < <br />Silty CLAY (20,80) light brown with white streaks and patches, <br />< <br />c <br />tp <br />Mw -1 <br />-5 2 <br />moist, no hydrocarbon odor <br />= 6 c <br />< <br />6 <br />CL <br />- c <br />< <br />— 8 < <br />< <br />Silty CLAY (40,60) light brown, moist, no hydrocarbon odor <br />_ 10 <br />< <br />10 <br />MW -1 <br />-10 6 <br />4 <br />< <br />4t <br />< <br />s <br />11 <br />- 12 < <br />CL <br />-14 < <br />< <br />Sandy silty CLAY (20,30.50) brown with green -gray mottling, and <br />< <br />< <br />34 <br />5 j 14 <br />white streaks and patches, moist no hydrocarbon odor <br />- 16 < <br />< <br />30 <br />24 <br />< <br />< <br />CL <br />_ 18 < <br />< <br />t <br />< <br />-20- < <br />< <br />MN -1 <br />(grades with abundant root casts <tmm diameter) <br />38 <br />-20 2 <br />< <br />< <br />3 <br />B <br />_ 22 < <br />< <br />CL <br />` <br />` <br />(grades gray) <br />-24 <br />< <br />04/12/iHS i,th[,;,-ma 23 <br />°age 1 0' <br />