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Project: ARCO Station #4493 Log of Monitoring Wells: <br /> Location: 205 North Center St.,Stockton,CA Project Number: 38465950 MW-11M and MW-11D <br /> Dates Drilled. 11/5102 Total Depth balled 56 5 feet bgs Logged By 7 Brooks <br /> Whilung�tractor Gregg Drllbtlg Borehole Diameter- 10-inch Chocked By V Elarth <br /> Rig Type Lamtted Access HSA Well Consft=on Data 11/5/02 Scrag Slot Sue 0 020-inch <br /> Dnlhng Method. Hollow Stem Auger Well Diameter 2-mch <br /> Dnll Bit 10-Inch HSA Type of Well Casing- SCH 40 PVC <br /> Comments Pneumatic Hammer-no blow counts <br /> 00 <br /> a � s <br /> 6 <br /> Q LrMOLOGY DESCRIPTION WELT,CONSTRUCTION <br /> No Samples taken 0 15 Feet bgs �mounted tel <br /> 0 <br /> h oclang <br /> Pressane caps <br /> 64 W Ncat Cement ko n near surface to 9'bg <br /> 5 1 MW-11M 2-mch SCR 40 PVC to 13 <br /> 1 1 <br /> M o MW-I ID 2-ma SCR 40 PVC to 48 <br /> 10 10 <br /> 9-115' Bentonite Chips <br /> r <br /> 15 = <br /> 00 gaudy Silt 04L) Gra msh Way to olive gray with MW 11M 2,mcb SCH 40 PVC, 15 <br /> red�sh brown nm axx%stsmmg,moist. 0 020anch Slot Sween 13-33, <br /> M3 Filter Pack Sand 115-35' <br /> 20-- Frust water 20' <br /> 00 Sandy C)aX(CL) C,remAsb gay with reddish brown uoa <br /> oxide staining,murst-wet-saturated,low plaaaaty, <br /> medmin stiff <br /> r 1 <br /> 25- <br /> 00 Sandy silt(M11) privo gray with reddish brown um 25 <br /> oxide stammg,wet saturatod <br /> 00 Sandy Silt 0&0 Obve gray wash bttle reddish brown <br /> mm oxide statmng,wet-satmaoed. <br /> 35 r <br /> 00 low Clsyra�me�(CL) <br /> olive� wet-satarated, <br /> afE <br /> 40 0 0 35-46 Bentonite Chips <br /> Sandy Clay(CL) Olive day,wet-saturated,)ow <br /> Irene[ medm strff stiff <br /> Silty Sand(SM) Moderate-well graded,olive brown. <br /> Am ginned slhy:reel,20%uX W%sand, <br /> wet-saturated,subnmD&d-roomed,modwi tely cohesive <br /> 00 <br /> ?, S <br /> 50 r MWAID 2-mchSCH 40PVC, <br /> 00 Salty Sand(SW Moderate-weg graded,olive 0 020-mch Slot Scorn 48-53, 5Q <br /> brown-gray f ne-mednnn gained silty sand.15%silt. $3 Filter Pack Sand 4Cr56 5 <br /> 85%sand.wet subrounded-nxWed,wet saturated, <br /> moderately ccbmvr- <br /> 55 0 0 As Above <br /> SUty tiY <br /> Clay CL Dark ohvobine gmy stiff very saff <br /> 2870 o.reway oaks Dr Ste 300 <br /> JMSSWr&McnW.CA95933 <br /> 916-6679-2000 <br />