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y ! <br /> Lo <br /> rIN Geological Technics, Inc. Project# 1030.2 <br /> 3780 West Linne Road <br /> Tracy, California <br /> 6w <br /> TEG Project#70524F <br /> BTEX, MTBE, & TPH-gasoline (EPA method 62608) Analyses of SOIL VAPOR in u /L of Va or <br /> SAMPLE NUMBER: Probe SG-7 SG-7 SG-7 SG-8 SG-9 SG-9 <br /> F Blank d up <br /> SAMPLE DEPTH(feet): 5.0 5.0 5.0 5.0 5.0 5.0 <br /> PURGE VOLUME., 1 3 7 1 1 i <br /> COLLECTION DATE: 5/24/07 5124/07 5/24/07 5/24/07 5/24/07 W4/07 W4107 <br /> COLLECTION TIME: 10:32 11:01 11:22 11:45 12:35 12:56 13:40 <br /> DILUTION FACTOR(VOCs): 1 1 1 1 1 1 i <br /> RL <br /> i. <br /> Benzene 0.080 nd nd nd nd nd nd nd <br /> Toluene 0.10 nd 0.19 0.16 0.13 0.13 0.14 0.14 <br /> �.. E'thylbenzene 0.10 nd nd nd nd nd nd nd <br /> m,p-Xylene 0.10 nd 0.19 0.20 0.16 0.16 0.19 0.14 <br /> o-Xylene 0.10 nd nd nd nd nd nd nd <br /> Methyl-t-butyl ether(MTBE) 0.10 nd nd nd nd nd nd nd <br /> TPH(gasoline range) 5.0 nd nd nd nd 7.6* 7.6* 8.1* <br /> ' 1,1 Diflouroethane(leak check) 10 nd nd nd nd nd nd nd <br /> Surrogate Recovery: <br /> DBFM 99% 107% 109% 104% 132% 106%._ 107% <br /> 1,4-BFB 94% 105% 99% 101% 122% 93% 99% <br /> nd' Indicates not detected at listed reporting limits <br /> 'RL' Indicates reporting limit at a dilution factor of 1 <br /> 6W *' Indicates value due to single, unknown peak <br /> Analyses performed in TEG-Northern California's lab <br /> Analyses performed by. Ms. Meghan Powers <br /> `. <br /> i. <br /> 11350 Monier Park Place, Rancho Cordova, CA 95742 Phone: (916) 853-8010 Fax: (916) 853-8020 <br />