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Blakely Environmental Investigations Inc. <br /> Frontier Trucking - Tracy, Califronia <br /> TEG Project#20521E <br /> BTEX, OXYGENATES (EPA method 82608) & TPN(EPA method 8015m) Analyses of SOIL <br /> SAMPLE NUMBER. Blank BOT NWS BOT NES BOT ESS BOT SES BOT SWS <br /> COLLECTION DATE: 521172 521/02 521/72 x121/02 521/02 <br /> ANALYSIS DATE: 522/02 5122172 522102 522172 522172 x/12/02 <br /> RL FACTOR for VOCs: 1 80 80 80 80 1 <br /> RL <br />' Benzene 09-14 5.0 nd nd 490 5900 700 15 <br /> Toluene (0944 5.0 nd 1100 1300 1100 630 22 <br /> Ethylbenzene (ug9Cg) 5.0 nd 11000 14000 7900 32000 2300" <br /> Total Xylenes (ugft) 5.0 nd 47000 2400 3400 14000 170 <br /> Tert-Butanol(TBA) (ug/Kg) 50 nd nd nd nd nd nd <br /> Methyl-t-butyl ether(MTBE) (ugiKg) 5.0 nd 4600 4700 3600 3700 340 <br /> Diisopropyl ether(DIPE) (ugft) 5.0 nd nd nd nd nd nd <br /> Ethyl-t-butyl ether(ETBE) (ugft) 5.0 nd nd nd nd nd nd <br /> Tert-amyl methyl ether(TAME) (ugwg) 5.0 nd nd nd nd nd nd <br /> TPH-gasoline range(C5-C11) (mg/kg) 1.0 nd 92 350 1500 600 89 <br /> TPH-diesel range (C 12-C24) (mg#<g) 1.0 nd 440 700 2600 640 320 <br /> Surrogate Recovery: <br /> DBFM 89% 95% 101% 96% 94°10 907% <br /> 1,2-DCA-d4 87% 90% 90% 83% 82% 93% <br /> Toluene-d8 85% 109% 123% 125% 121% 126% <br /> 'nd' INDICATES NOT DETECTED AT LISTED REPORTING LIMITS <br /> 'RL' INDICATES REPORTING LIMITS <br /> 'RL FACTOR' MULTIPLICATION FACTOR USED TO ADJUST REPORTING LIMIT DUE TO SAMPLE DILUTION <br /> '*'INDICATES COMPOUND ABOVE CALIBRATION RANGE - - - <br /> ANALYSES PERFORMED IN TEG-Northern California's DHS CERTIFIED LAB <br /> ANALYSES PERFORMED BY: Mr. Leif Jonsson page 1 <br />' 11350 Monier Park Place, Rancho Cordova, CA 95742 Phone: (915) 853-8010 Fax: (916) 853-8020 <br />