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GEOPROBE <br /> SAMPLE COLLECTION AND DESCRIPTION LOG <br /> SITE Agricultural Commissioner's Office BORING ID SB-6 <br /> 503 East 10th Street <br /> Tracy, California - Drilling Date December 19, 1997 <br /> SAMPLE PID <br /> SAMPLE SAMPLE DEPTH SAMPLE READING <br /> ID TIME (Feet) TYPE ANALYSES (ppm) USCS SOIL DESCRIPTION <br /> TPHD <br /> S136-5 920 5 SOIL TPHG 00 CL SILTY CLAY Silty clay, light brown, <br /> BTEX moist, stiff, no petroleum odor <br /> MTBE <br /> TPHD CLAYEY SILT Clayey silt with some <br /> S136-10 930 10 SOIL TPHG 00 ML fine sand, light brown, wet, medium <br /> BTEX <br /> MTBE stiff, some petroleum odor <br /> TPHD <br /> TPHG SILTY SAND Silty fine sand with <br /> S136-15 940 15 SOIL BTEX 00 SM some clay, light brown, wet, medium <br /> MTBE dense, no petroleum odor <br /> TPHD <br /> GROUND TPHG <br /> S136-GW 1000 7 WATER BTEX NA NA NA <br /> MTBE <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 Sod Classification System <br /> bgs= below ground surface Drilling Rig Geoprobe 5400 <br /> NA= Not Applicable Driller David Fisch (C-57#6_83.8_65) <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 /> r <br />