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1 <br /> Connestoga-Rovers&`.,aociates SOIL BORING LOG <br /> 5900 Hollis Street,Suite A <br /> Emeryville,CA 94608 <br /> Telephone: 510-420-0700 <br /> Fax: 510-420-9170 <br /> CLIENT NAME Olympian JV WELL NAME B-21 <br /> JOB/SITE NAME JIMCO Truck Plaza DRILLING STARTED 15-Mar-07 <br /> LOCATION 1022 Frontage Road,Ripon,CA DRILLING COMPLETED 15-Mar-07 <br /> PROJECT NUMBER 165-1556 WELL DEVELOPMENT DATE(YIELD) NA <br /> DRILLER Gregg Drilling C57#485165 GROUND SURFACE ELEVATION 59.5 It amsl <br /> DRILLING METHOD Direct Push TOP OF CASING ELEVATION NA <br /> BORING DIAMETER 2.5 Inches SCREENED INTERVAL NA <br /> LOGGED BY G.Reiss DEPTH TO WATER(First Encountered) 22.5 ft bgs(15-Mar-07) <br /> REVIEWED BY B.Wilken, PG#7564 DEPTH TO WATER(Static) NA 1 <br /> REMARKS Collected grab groundwater sample through 3/4 inch diameter temporary PVC casing with 10' of screened casing <br /> w <br /> E g v S' <br /> LU z <br /> CL = a N U o 00 DESTRUCTION METHOD DESCRIPTION z= WELL DIAGRAM <br /> ❑ H E w �—' 0 <br /> a < W ❑ O Uw <br /> ASPHALT: 3 inches thick. -------"1-0.3Y"�CQ 0Concrete <br /> FILL:Road Base 1.0 ° '^° <br /> Silty SAND: Light brown;loose;dry;40%silt,60%fine <br /> grained sand;non-plastic;moderate estimated <br /> permeability. <br /> 5— <br /> SM <br /> 0 _ _ _ __ __ __ __ ____ 8.5 <br /> SILT with sand Light brown;medium stiff;90%silt <br /> 0 10%fine grained sand;non-plastic;low estimated <br /> B-210 10" 10 ML permeability. <br /> ___________ _ ____________ 11.0 <br /> Silty SAND: Light brown;medium dense;dry;40%silt, <br /> o SM 60%fine grained sand;non-plastic;moderate estimated <br /> permeability. <br /> _ _ 13.5 <br /> — I SILT with sand Light brown and light gray;medium stiff; <br /> o B-210 15 ML 1 dry;90%silt, 10%fine grained sand;non-plastic;low 15.0 <br /> 15 `estimated permeability_—-- — —— — —— <br /> Silty SAND: Brown/orange;medium dense;dry;20% Portland Type <br /> silt,80%fine grained sand;non-plastic;moderate 1/II <br /> SM estimated permeability. <br /> LL o @17': Light brown/orange;loose;30%silt,70%fine 18.0 <br /> LU B-2101e -- _grained sand_ — -- _— ---- <br /> a ML SILT: Light gray;medium stiff;dry; 100%silt; 19.0 <br /> --nonplastic,low estimated permeability-——— ——� <br /> 0 o B-21(D20• Sandy SILT: Light gray/brown;medium stiff;dry;70% <br /> 9 20 ML silt,30%fine grained sand;non-plastic;low estimated <br /> o -- �ermeablli---------------------ty. 21.0 <br /> LL o Silty SAND: Light orange/brown;medium dense;dry; <br /> B-21C 22• SM 30%silt,70%fine grained sand;non-plastic;moderate <br /> o estimated permeability. 23.0 <br /> A 0 —— @221: Moist. <br /> <1•0 e-21024 22.5': Wet. — <br /> SM SAND with silt: Light orange/brown;medium dense; <br /> N wet; 10%silt,90%fine to coarse grained sand; <br /> 53 25 ——— non_:plasticLhigh estimated eermeabiRty_—___—_—— 25.5 <br /> —Sandy SILT: Light brown;medium stiff;moist;60%silt, <br /> 9 0 e z1�z� ML 40%fine to medium grained sand;non-plastic;low <br /> 27.0 <br /> —— `estimated permeability_——— _ 30.0— <br /> o SILT with sand: Light and dark brown;moist;90%°silt <br /> ML 10%fine grained sand;non-plastic;low estimated <br /> permeability. <br /> 0 <br /> a <1•0 B-210 30' 30 Bottom of <br /> ° Boring @ 30 ft <br /> bgs <br /> PAGE 1 OF 1 <br />