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GEOPROBE <br /> SAMPLE COLLECTION AND DESCRIPTION LOG <br /> SITE Agricultural Commissioner's Office BORING ID SB-10 <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 /> S610-5 1500 5 SOIL <br /> NOT 00 CL SILTY CLAY Siltyclay, light brown, <br /> ANALYZED moist, stiff, no petroleum odor <br /> TPHD CLAYEY SILT Clayey silt with some <br /> SB10-10 1510 10 SOIL TPHG 00 ML fine sand, light brown, wet, medium <br /> BTEX stiff, no petroleum odor <br /> MTBE <br /> LNOT SILTY SAND Silty fine sand with <br /> SB10-15 1520 15 SOIL ANALYZED 00 SM some clay, light brown, wet, medium <br /> dense, no petroleum odor <br /> TPHD <br /> SB10-GW 1530 7 GROUND TPHGWATER 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 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 />