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GEOPROBE <br /> SAMPLE COLLECTION AND DESCRIPTION LOG <br /> SITE Agricultural Commissioner's Office BORING ID SB-1A <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 /> TPHD <br /> TPHG SILTY CLAY silty clay, greenish- <br /> S61A-5 1105 5 SOIL BTEX 20 CL gray, moist, stiff, strong petroleum <br /> MTBE odor <br /> TPHD CLAYEY SILT Clayey silt with some <br /> TPHG fine sand, greenish-gray, wet, <br /> SBIIA-10 1115 10 SOIL BTEX 915 ML medium stiff, strong petroleum odor <br /> MTBE Some remnant coarse sand backfill <br /> LEAD to 9 5 feet b s <br /> TPHD SILTY SAND Silty fine sand, light <br /> SBIA-15 1120 15 SOIL BTHX 00 SM brown, wet, medium dense, no <br /> MTBE petroleum odor <br /> Terminated soil bonng 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 Geo robe 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 />�1 <br />