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GEOPROBE <br /> SAMPLE COLLECTION AND DESCRIPTION LOG <br /> SITE Agricultural Commissioner's Office BORING ID S13-8 <br /> 503 East 10th Street <br /> Tracy, California Drilling Date December 22, 1997 <br /> SAMPLE PID <br /> SAMPLE SAMPLE DEPTH SAMPLE READING <br /> ID TIME (Feet) TYPE ANALYSES (ppm) USCS SOIL DESCRIPTION <br /> S138-5-5 835 5 SOIL 00 CL <br /> NOT SILTY CLAY Silty clay, light brown, <br /> ANALYZED moist, stiff, no petroleum odor <br /> TPHD CLAYEY SILT Clayey silt with some <br /> SB8-10 845 10 SOIL TPHG 00 ML fine sand, greenish-gray, wet, <br /> BTEX medium stiff, strong petroleum odor <br /> MTBE <br /> NOT SILTY SAND Silty fine sand with <br /> S138-15 855 15 SOIL ANALYZED 00 SM some clay, light brown, wet, medium <br /> dense, no petroleum odor <br /> TPHD <br /> GROUND TPHG <br /> SB8-GW 900 7 WATER BTEX NA NA NA <br /> MTBE <br /> VOCS+OX <br /> Terminated sod boring at 15 feet bgs <br /> Sealed borehole with neat cement <br /> using tremae method <br /> NOTES PID=Photoionization Detector Geologist Joseph Ramage RG#5856) <br /> ppm= parts per million Ramage Environmental <br /> USCS=Unified Soil Classification System <br /> bgs=below ground surface Drilling Rig Geoprobe 5400 _ <br /> NAW Not Applicable Driller _David Fisch (C-57#683865) <br /> Fisch Environmental <br /> TPHD =Total Petroleum Hydrocarbons as Diesel <br /> TPHG=Total Petroleum Hydrocarbons as Gasoline <br /> BTEX= Benzene, Toluene, Ethylbenzene,Xylenes <br /> MTBE Methyl tertiary butyl ether <br /> VOCS+OX=Volatile Organic Compounds including oxygenate additives <br />