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Drilling Log <br />GROUNDWATER Monitoring Well MW -4 <br />TECHNOLOGY <br />Project Chevron-TracySee Site Map <br />Owner Chevron USA Products Com any <br />Location 103 west EOeventh St, Tracy. C4Proj. No 02070 0055 For Boring Location <br />Surface Elev Total Hole Depth 20 ft Diameter & 1n COMMENTS <br />Top of Casing Water Level Initial 1`0 ft Static <br />Screen Dia 2 in Length 15 ft Type/Sze 0 020 in <br />Casing Dia 2 in Length 5 ft Type SCh 40 PVC <br />Fill Material +r-3 Sand Rig/Core CME-75/SDilt Spoon <br />Drill Co SES Inc Method Hollow Stem AuyerlPID <br />Driller Mike puffy Log By BruCe Beale Date 03120195 Permit <br />Checked By Ed Simonis License No RG#4422 <br />c <br />'• w <br />:, <br />a� a-- <br />�E <br />�, <br />o <br />s� <br />U <br />Description <br />4)_ 3 E <br />...a <br />a e <br />a <br />E <br />U <br />; <br />V <br />v <br />all <br />°-' <br />rn <br />(Color. Texture, Structure) <br />tj <br />z <br />in <br />x <br />— <br />U) <br />Trace < 10%, Little 10% to 20%, Some 20% to 35%. And 35% to 50% <br />_2 <br />2 <br />CL <br />Sandy silty CLAY (10,20,70) orange brown, most to wet, no <br />hydrocarbon odor <br />s 4 <br />HW -4 <br />0 -5 <br />1 <br />6 <br />=_ <br />z <br />— <br />CL <br />8 <br />- <br />- <br />Sandy silty CLAY (10,30,60) gray, wet, degraded hydrocarbon <br />lO <br />= MW -4 <br />odor <br />_ 20 -10 <br />3 <br />CL <br />Encountered Water, 03120195 1040 hrs <br />4 <br />_ <br />5 <br />12 <br />- <br />- <br />CL <br />14 <br />— <br />Sandy Clayey SILT (10,40,50) tan brown, wet, very slight <br />-4 <br />2 -15 <br />6 <br />hydrocarbon odor <br />16 <br />= i <br />} <br />10 <br />az <br />ML <br />(grades no hydrocarbon odor) <br />18 <br />— <br />Silty CLAY (15 85) light brown, wet, no hydrocarbon odor <br />20 <br />Mid -4 <br />0 -20 <br />3 <br />CL <br />5 <br />5 <br />22 <br />E <br />End of boring Installed groundwater monitoring well <br />24 <br />04/26119951tr9og-mar93 Page 1 01 1 <br />