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Drilling Log <br /> ❑0❑❑® GROUNDWA-.-EP4%-- 1.6001, Soil Boring SB-3 <br /> TECHNOLO--Y <br /> Chevron-S. Center, S.,-kton Owner See Site Map Chevron <br /> Project <br /> Location 139 South Center, ST:-:*ton. CA Proj. No. 02070 5039 For Boring Location <br /> Surface Elev. Total Hole Depth 44 ft- Diameter COMMENTS: <br /> Top of Casing Water Level Initial 43 ft. Static <br /> Screen:Dia Leng Type/Size <br /> Casing:Dia Length Type <br /> Fill Material Rig/Core CME-55/Split Spoon <br /> Drill Co. SES, Inc- Method Hollow Stem Auger/PID <br /> Driller Morris Peterson Log By Bruce Beale Date 05/13/94 Permit # <br /> Checked By Ed Simons License No. RG#4422 <br /> C* <br /> 2 Description <br /> o 'o -of U <br /> m` da ° L) ; J� rn (Color, Texture, Structure) <br /> o`er m -;° QJ N Trace < 10%. Little 10% to 20%. Some 20% to 35%. And 35% to 50X <br /> -2 <br /> 2" asphalt over 4" concrete <br /> Brown clayey silty, pebbly SAND (moist, no hydrocarbon odor) <br /> 2 <br /> CL <br /> 4 4 <br /> 5 9 Gra micaceous clayey silty fine SAND (moist, degraded hydrocarbon <br /> 6 0 -s'5, s i odor) <br /> ML <br /> 8 1 I (grades brown) <br /> I <br /> 1 ( Greenish gray and brown silty, sandy, pebbly, CLAY (moist, slight <br /> i0 C -10.3 1 hydrocarbon odor) <br /> CL <br /> 12 <br /> 14 3 �� Gray sandy silty CLAY (20,20,60) with root casts (moist to very moist, <br /> hydrocarbon odor) <br /> SB-3 3 <br /> 4.5 -15' 2 i. <br /> 16 � <br /> CL <br /> h <br /> 18 <br /> f� <br /> SB-3 <br /> 20 1.5 -20' 3 (grades mottled gray and brownish gray) <br /> 22 L CL <br /> 1 <br /> r <br /> j <br /> 24 9 <br /> 06/09/19941ithlog-mar93 Page: 1 of 2 <br />