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Project: ARCO Station # 2186 Log of Monitoring Well: <br /> Location 3212 N California Street,Stockton,CA Project Number 38466463 BH-2/AW-1 <br /> Dates Dolled 4113104 Total Depth 66 Borehole Name BH-2 <br /> Dnllmg Contractor Gregg Dolling Well Construction Date 4/13/04 Logged By Jeff Brooks <br /> PNWle Diameter 8-inch Casing Diameter 2-inch Casing Type SCH 40 PVC Checked By Vernon Elarth RG <br /> DrillingMethod Hollow Stem Auger Screen Interval 60 65 feet Slot Size 0 020 inch Sampling Method Split spoon <br /> Comments East-Northeast of UST pit <br /> c <br /> ° s <br /> Q t' E ° ¢ <br /> LITHOLOGY DESCRH'TION WELL CONSTRi3CTION <br /> 0 Asphalt and roadbase Flush mount traffic grade 0 <br /> vault box <br /> Sandy Silt(ML) Dark Grayish brown 35%fine to medium <br /> grained sand 65%silt stiff moist l inch SCH PVC with <br /> locking pressure cap to 60 <br /> Cleared with air knife to 5 feet depth below ground surface(bgs) <br /> 5 As above except dark yellowish brown 15%very fine to fine 5 <br /> 50 00 grained sand 15%cahche hard <br /> As above except 40%very fine to fine grained sand trace clay <br /> 10 50 00 10 <br /> Neat Cement from near <br /> surface to 55 bgs <br /> 15 19 00 As above except with thin silty sand and clay lenses(low 15 <br /> plasticity) <br /> 20 30 06 Sandy Silt with Clay(ML) Olive brown 50%silt 30%very fine 20 <br /> to fine grained sand 20%clay very stiff moist <br /> 25 33 0 0 Sandy Clay with Silt(CL) Olive brown 25%very fine to fine 25 <br /> grained sand 15%silt low moderate plasticity clay component <br /> hard moist <br /> Sand(SP) Dark grayish brown poorly sorted fine to medium <br /> grained sand trace coarse grained sand(rounded clasts) trace <br /> silt slightly rmcaceous dense moist <br /> 30 34 06 30 <br /> 35 35 04 As above 35 <br /> Silt(ML) Yellowish brown trace very fine to fine grained <br /> sand trace clay hard moist <br /> 40 38 00 40 <br /> UM9166792000 <br /> 2870 Gateway Oaks Dr Ste 31X1Sacrmnenry CA 95833 <br />