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Connestoga-Rovers&'howsociates 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-19 <br /> I <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 60.9 ft 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) 24.0 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 /> a <br /> c a a as <br /> a 1; v a p DESTRUCTION METHOD DESCRIPTION � WELL DIAGRAM <br /> a ~ ¢ W �J Ua <br /> a <br /> ASPHALT- 3 inches thick. 0.30 o Concrete <br /> FILL:Road Base 1.0 <br /> Silty SAND: Brown;medium dense;dry;30%silt,70% <br /> fine grained sand;non-plastic;moderate estimated <br /> permeability. <br /> 5 SM <br /> 0 <br /> _______ ___________ 9.0 <br /> 0 Sandy SILT: Chalky brown;medium stiff;dry; 70%silt, <br /> e-19@ 10' 10 30%fine grained sand;non-plastic;low estimated <br /> ML permeability. <br /> 0 <br /> 12.0 <br /> SM Silty SAND: Light brown;medium dense;dry;30%silt, <br /> 70%fine grained sand;non-plastic;moderate estimated 13.0 <br /> �,permeabilit/L.——————————————————- <br /> SILT with sand: Light brawn/light gray;medium stiff;dry; <br /> 0 ML <br /> <1.0 B-19(QM 15' 90%silt, 10%fine grained sand;non-plastic;low <br /> 15 _estimated permeability________________ 15.5 Portland Type <br /> o Silty SAND: Light gray;loose;dry;20%silt,80%fine I/II <br /> SM grained sand;non-plastic;high estimated permeability. <br /> ____ ________________ ___ 17.0 <br /> a 0 ML I SILT with sand Light brown/light gray;medium stiff;dry; <br /> o B•1sp?1B' -- 90%slit, 10%fine grained sand;non-plastic;low 18.0 <br /> estimatedpermeability._——— — <br /> SAND with silt: Light gray;loose;dry; 10%silt,90%fine <br /> 0 93 2600 8-190 20' to medium grained sand;non-plastic;high estimated <br /> g 20 SP permeability. <br /> 0 <br /> a 71 <br /> B-19027 - <br /> } <br /> 23.0 <br /> ----------------------------------- <br /> 140 SW SAND with slit: Light gray;loose;moist; 10%silt,90% 24.0 <br /> c� 3800 B-190 24� _ fine to coarse grained sand;non-plastic;high estimated L <br /> U) SM permeability---- --- — --� 250 <br /> 25 —— Sllty SAND: Light gray;loose;wet;30%silt,70%fine r <br /> SW drained sand moderate estimated permeability_----/ 26.0 <br /> a 75 -- SAND: Light gray;loose;wet; 100%fine to coarse / <br /> a 8.19(02r drained sand;—n2nzllasticLhigh estimated permeability. <br /> } ML Sandy SILT: Gray/brown;medium stiff;wet;80%silt, <br /> 0 20%fine grained sand;non-plastic;low estimated <br /> clayeyy Sandy SILT_: Orange/brown;medium stiff;moist;__ 28 5 <br /> a 9 <1 oML 15%clay,70%silt; 15%fine grained sand;low plasticity;d permeability. 30.0 <br /> e-19t 30' 30 . <br /> Bottom of <br /> ° Boring @ 30 ft <br /> bgs <br /> PAGE 1 OF 1 <br />