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S <br /> GEOPROBE <br /> SAMPLE COLLECTION AND DESCRIPTION LOG <br /> SITE Agricultural Commissioner's Office BORING ID SB-4 <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 /> SB4-5 1020 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 /> SB4-10 1030 10 SOIL TPHG 00 ML fine sand, light brown, wet, medium <br /> BTEX <br /> MTBE stiff, no petroleum odor <br /> TPHD SILTY SAND Silty fine sand with <br /> SB4-15 1040 15 SOIL TPHG 00 SM some clay, light brown, wet, medium <br /> BTEX dense, no petroleum odor <br /> MTBE <br /> TPHD <br /> SB4-GW 1100 7 GROUND TPHG NA NA NA <br /> WATER BTEX <br /> MTBE <br /> Terminated sal boring at 15 feet bgs <br /> Sealed borehole with neat cement <br /> using tremie 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#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 />