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' Blakely Environmental Investigations Inc. <br /> eq <br /> Frontier Trucking - Tracy, Califronia <br /> TEG Project#11005E <br /> QA/QC DATA -MATRIX SPIKE ANALYSES- SOIL <br /> SAMPLE DATE MTBE BENZENE TOLUENE ETHYLBENZ GASOLINE DIESEL <br /> NUMBER _ ANALYZED ug/kg ug/kg ug1kg ug*g mg/kg_ mgft <br /> ' 2-2FT ES <br /> Spiked Conc. 5121102 20.0 10.0 10.0 10.0 20.0 50.0 <br /> Measured Conc. 21.1 10.0 12.4 12.5 20.2 55.5 <br /> %Recovery 106% 100% 124% 125% 101% 111% <br /> Spiked Conc. 5121102 20.0 10.0 10.0 10.0 20.0 50.0 <br /> Measured Conc. 15.8 9.7 10.0 9.9 20.6 57.5 <br /> %Recovery 79% 97% 100% 99% 103% 115% <br /> ' RPD 28.7% 3.0% 21.4% 23.2% 2.0% 3.5% <br /> 2-2FT ES <br /> Spiked Conc. 5122102 20.0 10.0 10.0 10.0 20.0 50.0 <br /> Measured Conc. 20.5 9.8 13.6 10.7 20.7 56.6 <br /> %Recovery 103% 98% 136% 107% 104% 113% <br /> Spiked Conc. 5122102 20.0 10.0 10.0 10.0 20.0 50.0 <br /> Measured Conc. 21.3 11-0 14.0 12.4 20.9 54.8 <br /> %Recovery 107% 110% 140510 124% 105% 110% <br /> RPD 3-8% 11.5% 2.9% 14.7% 1.0% 3.2% <br /> ACCEPTABLE RPD LIMIT=30% <br /> I ANALYSES PERFORMED IN TEG-Northern California's DHS CERTIFIED LAB <br /> ANALYSES PERFORMED BY: Mr. Leif Jonsson <br /> 11350 Monier Park Place, Rancho Cordova, CA 95742 Phone: (916) 853-8010 Fax: (916) 853-8020 <br />