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' DLog❑ © GROUNDWATER Drilling VW-11 <br /> ❑❑❑ TECHNOLOGY <br /> Project Chevron/Benjamin Holt Owner Chevron USA Products Co See Site Map <br /> ' Location Stockton, Ca 02320-2241 3/3/92 For Boring Location <br /> Protect No Date drilled <br /> Surface Elev Total Hole Depth 20 0 ft Diameter 8 1/1 COMMENTS <br /> Top of Casing Water Level Initial 20 0 ft Static <br /> ' Screen Dia 2 in Length 5 ft Type/Size 2 in <br /> Casing Dia 2 In Length 15 ft Type SCh 40 PVC <br /> Fdter Pack Material Lapis Lustre #2/12 Rig/Core Type Mobile 9-53/Split SPOon <br /> ' Drilling Company Sierra Pacific _ Method Hollow Stem Auger Permit # <br /> Driller Manuel Arquillo Log By Steve Kranyak <br /> Checked By Ed Simons License No.RG 4422 <br /> E ,> Co Description <br /> a~ d aL o a QV U ao U Texture, Structure) <br /> Q*-- E d Q E a at - UJ (Color. <br /> o w Trace < 10%, Little 10% to 20%. Some 20% to 35%. And 35% to 50% <br /> _2 v NmX <br /> 1 0 Asphalt over base course <br /> o -",-Brown silty CLAY with some fine sand (medium stiff, moist, <br />' no hydrocarbon odor) <br /> 2 < < <br />�i 4 < <br /> CL <br /> < <br /> 8 <br /> 10 Gray silty fine SAND (medium dense, moist, hydrocarbon <br />' odor) <br /> 12 <br />' = 65 A 10 SM <br /> �6 111 <br /> _ 13 <br /> 70 B 15 <br /> 12 <br /> 15 <br /> 12 <br /> 70 C 14 <br />' 20 Encountered water 3/3/92 (1530 hours)i <br /> End of boring installed vapor extraction well <br /> •' 22 <br /> 24 <br />' 04/0711992 litnlog-ian92 Page l of t <br />