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Connestoga-Rovers&wwsociates 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-24 <br /> JOB/SITE NAME JIMCO Truck Plaza DRILLING STARTED 14-Mar-07 <br /> LOCATION 1022 Frontage Road,Ripon CA DRILLING COMPLETED 14-Mar-07 <br /> PROJECT NUMBER 165-1556 WELL DEVELOPMENT DATE(YIELD) NA <br /> DRILLER Gregg Drilling C57#485165 GROUND SURFACE ELEVATION 59.4 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) 22.0 ft bgs(14-Mar-07) <br /> REVIEWED BY B.Wilken,PG#7564 DEPTH TO WATER(Static) NA 1 f <br /> REMARKS Collected grab groundwater sample through 3/4 inch diameter temporary PVC casing with 10' of screened casing <br /> N <br /> I U U n <br /> E <br /> =Y _j wI' ci a O Z v WELL DIAGRAM <br /> o n p DESTRUCTION METHOD DESCRIPTION Z= <br /> o F E W a= �? O I— <br /> a Q O ' C9 U W <br /> ASPHALT: 3 inches thick. 0.3 0 0 o Concrete <br /> FILL:Road Base 1.0 <br /> Silty SAND: Light brown;medium dense;dry;30%silt, <br /> 70%fine grained sand;non-plastic;moderate estimated <br /> permeability. <br /> SM @4': Cemented zone of Silty SAND-hard pan: light <br /> 5 chaulky brown;very dense;low estimated permeability. <br /> @6': Light brown;medium dense;moderate estimated <br /> permeability. <br /> o -- — — — — --- -- ---- 8.0 <br /> SILT with sand: Light brown/gray;medium stiff;dry; <br /> ML 90%silt, 10%fine grained sand;non-plastic;low <br /> o estimated permeability. 10.0 <br /> B-24@10 _ — _ _---- — --_—__—_-- <br /> 10 SM Silty SAND: Light brown;medium dense;dry;20%silt, 11.0 <br /> —— 80%fine grained sand;non-plastic;moderate estimated <br /> 0 permeability_------------------J <br /> ML Clayey SILT: Light brown;soft;moist;20%clay,80% <br /> silt;low plasticity;low estimated permeability. ----- 13.0 <br /> SAND: Light brown;loose;dry; 100%fine to medium <br /> r SIDgrained sand;non-plastic;high estimated permeability. <br /> _________ _ __ __ _ 15.0 <br /> B-2415' <br /> 15 — --- -- — — ---- <br /> -- Sandy SILT: Light brown;medium stiff;dry;80%silt, Portland Type <br /> 0 0 ML I 20%fine grained sand;non-plastic;low estimated I/II <br /> permeability. _--- 17.0 <br /> a o SM Silty SAND: Light brown and white;medium dense;dry; <br /> 0120 B-za@ 1e' —— 30%silt,70%fine grained sand;non-plastic;moderate 18.0 <br /> estimated permeability.--------------J <br /> ML SILT with clay and sand: Gray;medium stiff;moist; 10% <br /> C6 90 z000 e•za@ 2a clay,80%silt, 10%fine grained sand;low plasticity;low 20.0 <br /> 0 20---- -,estirratedeermeability_----- — --�— <br /> z SM —Silty SAND: Brown/gray;loose;moist;30%silt,70% 21.0 <br /> a11 -- Mine—grained sandimoderate estimatedpermeabi!1y.- —�� <br /> 1 a-za@ 22' SAND: Brown and white;loose;moist; 100%fine to SZ <br /> o Sp medium grained sand;non-plastic;high estimated <br /> F permeability. <br /> z o @22': Wet. _____ __ _ __ 24.0 <br /> <1.0 8-24@ 24' _ _ _ -- - -- <br /> SILT with sand Light brown;medium stiff;moist;90% <br /> 25 ML I silt, 10%fine grained sand;non-plastic;low estimated <br /> permeability. 26.0 <br /> —— <br /> ______ __ ______ <br /> 0 Silty SAND with clay: Gray;medium stiff;wet; 10%clay, <br /> e-za@ 27' SM 30%silt,60%fine to medium grained sand; low plasticity; <br /> — `ow estimated permeability.---- — --� 27.5 <br /> Silty SAND: Orange/brown;very dense;dry;30%silt, <br /> SM 70%fine grained sand;low estimated permeability. <br /> o @29': Light gray;dense;moist;30%silt,65%fine to <br /> a <1•0 8-24030- 30 coarse grained sand,5%fine gravel;moderate estimated 30.0 <br /> j ermeabilit . Bottom of <br /> Boring @ 30 It <br /> bgs <br /> PAGE 1 OF 1 <br />