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Project: ARCO Station # 2168Lf S <br /> Location: 4AI WProject N <br /> esumber: 38466552 a <br /> t Charter Way,Stockton,CA g oSparge Well: <br /> SP-22 <br /> Drilling Contractor: Woodward Drilling Drilling Method: Hollow Stem Auger <br /> Dates Drilled: 11/I 1/05 Borehole Name: SP-22 <br /> t Wel]Construction Date: 11/11/05 <br /> 1 Borehole Diameter: 8-inchLogged By: Margaret Hogaboom <br /> Casing Diameter: 1-inch <br /> Type: SCH 80 PVC Checked By: Vern Elarth,R.G. <br /> Total Depth Drilled: 37 feet <br /> Screen Interval; 31-33 feet Slat Size: <br /> Comments: 0.020-inch Sampling Method: CA Modified Split Spoon <br /> f � d <br /> �u of <br /> A •� a o lu <br /> Sample ID � Er <br /> 0 LITHOLOGY DESCRIPTION <br /> WELL CONSTRUCTION <br /> damp to dry. <br /> Clayey Silt(ML), yellowish brown non plastic,very stiff,no odor, Well secw+ed with slip 0 <br /> ! � <br /> U cap pending system <br /> U <br /> installation <br /> Ly <br /> r7 <br /> 5 <br /> 14 <br /> 5 <br /> 32 Becomes brown,stiff,low plasticity,10%very fine to fine grained sand. <br /> 10 <br /> Silty Clay(CL). Brown,hard,medium to high plasticity,white f <br /> 15 mottling,no odor,damp, <br /> Is Neat cement from <br /> near surface to 26 ft 15 <br /> w <br /> 20 <br /> 13 10-15%very fine to fine grained sand- 20 <br /> Clay(CL).Olive gray,medium plasticity,stiff,white mottling <br /> 25 throughout,strong hydrocarbon-like odor,moist. <br /> 36 SP-22-25 <br /> 11/11/05 1520 25 a <br /> Bentonite Seal <br /> i <br /> 26-29 ft <br /> 30— <br /> 22 Greenish gray(GLEY 5GY 5/1),hard,medium to high plasticity,10-15% = SP-22 <br /> 30 <br /> very fine grained sand,trace coarse grained sand Y 0..inch SCH PVC, <br /> -_� 020-inch Sloto t <br /> Screen 31-33 ft <br /> #3 Filter Pack Sand <br /> 29-33.5 ft <br /> 35 SZ <br /> 20 <br /> Sand(SP). Greenish black(GLEY 10GY 2.5/1),very fineBentonite Sea] 35 <br /> Poorly graded,micaceous,trace silt,medium dens grained <br /> hYdrocarbon-like odor,saturated, e,very strong 33.5-37 ft <br /> 2870 Gewway oaks Dr.,Ste 300 �. <br /> Sav Wmnto,CA 95633 <br /> UIRS916-679-2000 <br />