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GEOPROBE <br /> SAMPLE COLLECTION AND DESCRIPTION LOG <br /> SITE Agricultural Commissioner's Office BORING ID SB-7 <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 /> NOT SILTY CLAY Silty clay, light brown, <br /> S137-5 920 5 SOIL 0 0 CL ANALYZED moist, stiff, no petroleum odor <br /> TPHD CLAYEY SILT Clayey silt with some <br /> S137-10 930 10 SOIL TPHG 00 ML fine sand, light brown, wet, medium <br /> BTEX <br /> MTBE stiff, no petroleum odor <br /> NOT SILTY SAND Silty fine sand with <br /> SB7-15 935 15 SOIL ANALYZED 00 SM some clay, light brown, wet, medium <br /> dense, no petroleum odor <br /> TPHD <br /> GROUND TPHG <br /> SB7-GW 950 7 WATER BTEX NA NA NA <br /> MTBE <br /> Terminated soil 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 Geo robe 5400 <br /> NA= Not Applicable Driller David FischC-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 />