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Project: ARCO Station #6020 Log of Monitoring Well: <br /> /Location 1711 E.Yosemite Avenue,Manteca,CA Project Number 38466092 MW-11 <br /> Dates Drilled 07/15/2003 Total Depth 35 feet Borehole Name <br /> Dnlhng Contractor Woodward Drilling Well Construction Date 7115/03 Logged By Jeff Brooks <br /> Adak <br /> ole Diameter 8-tach Casing Diameter 2-tach Casing Type SCH 40 PVC Checked By Vernon Elarth <br /> Drilling Method Hollow Stem Auger Screen Interval 15-35 feet Slot Size 0 020-inch Sampling Method Split spoon <br /> Comments North of central portion of station building <br /> � o � <br /> C� <br /> u GL 3 <br /> P U LMIOLOGY DESCRIPTION WELL CONSTRUCTION <br /> 0 08I0Asphalt and aggregate base Flush rmunl traffic grade vault 0 <br /> Silty Sand(SM) Dark brown dark grayish brown,80%fine to bolt <br /> medium grained sand 20%silt micaceous loose moist. 2 inch SCK 40 PVC with <br /> Vacuum cleared to 5 feet bgs <br /> locking pressure cap to 15 bgs <br /> 5 5 <br /> u 00 0815 <br /> Neat Cement from near surface <br /> to I 1 bgs <br /> 10 Sand(SP) Yellow isb brown fine to medium grained micaceous 10 <br /> 14 00 0820 medium dense moat <br /> 10-13 Bentonite Seal <br /> zo 00 0825 <br /> 15 <br /> 20 Sandy 27 0 0 0835 to fine Silgrained sand i mYicaceous suf7'to ve85 90%ry stiff mist. � 20 <br /> 2-mch SCH 40 PVC, <br /> 0 020-titch Slot Scrrcn 15-35 <br /> #3 F3]ter Pack Sand 13-35 bgs <br /> = Static Water-7115103 0930 23 60 feet bgs <br /> 25 70/10 00 0840 Q Fust Water 25 <br /> Silty Sand(SM) Brown,65-75%fate to medium gratned sand, <br /> 25-35%silt micaceous medium dense saturated <br /> 30 <br /> 27 00 0845 <br /> 5013 00 0850No Recovery Saturated 35 <br /> k <br /> • <br /> i <br /> } <br /> 2870 Gateway flaks Ih Ste 300 t <br /> Sacramento CA 95833 <br /> EMS9166792000 <br />