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Geological Technics, Inc. Project# 1030.2 <br /> 3780 West L.inne Road, Tracy, California <br /> IE)9 <br /> Project 970105E <br /> TEG E <br /> BTEX, MTBE, &TPHJEPA method 82608) Analyses of SOIL VAPOR in ug/L of Vapor <br /> ' SAMPLE NUMBER: SG-4 SG-4 SG-4 SG-5 SG-6 <br /> 4 <br /> SAMPLE DEPTH(feet): 9.0 9.0 9.0 9.0 7.0 <br /> ` PURGE VOLUME.' 1 3 7 1 1 <br /> COLLECTION DATE: 1/05/07 1/05/07 1/05/07 1/05/07 1/05/07 <br /> COLLECTION TIME: 10:14 10:34 10:54 12:41 13:20 <br /> DILUTION FACTOR: 1 i <br /> RL <br /> 6 <br /> Benzene 0.10 nd nd nd nd nd <br /> Toluene 0.10 0.43 0.21 0.22 0.29 0.22 <br /> Ethylbenzene 0.10 0.11 nd nd nd nd <br /> Total Xylenes 0.20 0.66 0.26 0.47 0.51 0.39 <br /> L <br /> Methyl-t-butyl ether(MTBE) 0.10 nd nd nd nd nd <br /> TPH(gasoline range) 5.0 nd nd nd nd nd <br /> 1,1 Diflouroethane(leak check) 10 nd nd nd nd nd <br /> V <br /> Surrogate Recovery: <br /> + DBFM 112% 121% 114% 120% 119% <br /> Lo 1,4-,BFB 96% 107% 99% 99% 103% <br /> Ln 'nd' Indicates not detected at listed reporting limits <br /> 'RL' Indicates reporting limit at a dilution factor of 1 <br /> Analyses performed in TEG-Northem California's lab <br /> Analyses performed by: Mr. Leif Jonsson page 2 <br /> LW <br /> 11350 Monier Park Place, Rancho Cordova, CA 95742 Phone: (916) 853-8010 Pax: (915) 853-8020 <br /> i. <br />