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1 <br /> Project: ARCO Station # 4493 Log of Monitoring Wells: <br /> Location 205 North Center Street,Stockton,CA Project Number 38"66N MW-13M and MW-13D i <br /> DageDnd 513!04 Total Depth 55 5 Borehole Name SO-3 <br /> ntractor WDC Hxploration and Wells Well Cottsttuchon Date 5/3!04 1 oggcd By 7 Brooks <br /> Boiameter 10-inch Casing Diameter 2 inch Casing Type SCH 40 PVC Checked By V Elarth,RG <br /> Drthod Hollow Stem Auger Screen Interval 15-30 45-50 Slot Size 0 020-mch Sampling Method Split spoon <br /> Comments Total depth of well materials is 51' <br /> w � <br /> Z y ` P LTTHOLOGY DESCRIPTION WELL CONSTRUCTION <br /> Flash mounted Christy box <br /> V-- <br /> v { <br /> Borehole cleared with post hole digger to 8feet below ground Wells secured withloc>Qng <br /> 0 \_G--\�C-\ pressure caps <br /> Neat Cement from near <br /> surface to 11 bgs <br /> Fill silty sand sand,and sandy clay with construction debns MW-1 3\4 2-incb SCH 40 5 <br /> (pieces of brick,etc) PVC to 15 <br /> MW 13DLmchSCH 40PVC <br /> -S-Y, to 45' <br /> 10 18 0 ��\\\ 10 <br /> NN-NN-Y, <br /> 11-13 BeiuoniteClupa <br /> Sandy Silt with Clay OAA) Olive gray,25%very fine to fine <br /> gramcd sand,trace to 20%clay very moist to wet,bard <br /> 15 33 0 MW 13M 2-mch SCH 40 15 <br /> PVC,0 020-inch Slot Screen <br /> 15-30, <br /> Silty Sand(SM) Dark Gray 30%silt,70%very fine to fine #3 Filter Pack Sand 13-31 <br /> = grained sand,saturated,dense <br /> 20 32 0 8 20 <br /> Fast water 20 bgs <br /> Sandy Clay with Silt(CL) Olive gay 25%foie grained saad, <br /> 25 33 10 20%silt,55%low plasticity clay very moist,hard 25 <br /> 19 07 As above except very stiff 30 <br /> 7 10 35 <br /> Sandy Silt with Clay(MI..) Dark olive gray 30%very fine to <br /> fine graved sand,15%clay very mmat,stiff 3143' Bentonite Clips and <br /> 12 12 Coated Pellets 40 <br /> Silty Sand(SM) Dark gray,40%silt,60%very fine to fine , <br /> 45gained sand,saturated medium dense 45 , <br /> 11 15 h <br /> MW-13D 2-tach SCH 40 <br /> Pvc�0 020-ttich Slot Screen <br /> 45-50 ? <br /> Silty Clay with Sand(CL) Dark gray,25%silt,15%very fine #3 Filter Peek Sand 43-51 <br /> 50 21 1 2 �' ��moist very stiff 50 0 <br /> VIA <br /> Borehole collapsed to 51 - <br /> 55 55 <br /> b <br /> 15 35%silt,25%very fine to fine grained sand ��a Formauan collapse to 51' <br /> 1 <br /> 2870 Gateway oaks Dr Ste 300 <br /> Swzawmw CA 95833 <br /> 916.679 WW <br />