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./ 4. <br /> �+ 819 Striker Avenue,Suite 8 <br /> Sequoia Sacramento,CA 95834 <br /> 4D (916)921-9600 <br /> 1W Analytical FAX(916)92 1-0 100 <br /> www sequotalabs com <br /> SECOR Lntetnational-Rancho Cordova Project TOSCO 11193,Stockton,CA <br /> 3017 Kilgore Road,Suite 100 Project Number N/A Reported <br /> Rancho Cordova CA,95670 Project Manager Rusty Benkosky 12/12/01 12 35 <br /> Total Purgeable Hydrocarbons,BTEX and MTBE m Air by DHS LUFI,- Quality Control <br /> Sequoia Analytical-Sacramento <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %R-EC- Limits RPD Limit Notes <br /> Batch 1120033-EPA 5030B(PIT) _ <br /> Blank(1120033-BLKl) Prepared&Analyzed 11/30/01 _ <br /> Purgcable Hydrocarbons ND 10 mg/m'Au <br /> Benzene ND 0 050 " <br /> Toluene ND 0 050 " <br /> Ethylbenzene ND 0 050 " <br /> Xylenes(total) ND 0 050 " <br /> Methyl tort-butyl ether ND 050 " <br /> Surrogate a a a-Tri luorotoluene 186 200 93 0 60-140 <br /> I <br /> LCS(11200_33-BS1) Prepared&Analyzed 11/30/01 <br /> Benzene 1 80 0 050 mg/rn'Air 200 900 70-130 <br /> Toluene 1 86 0 050 200 93 0 70-130 <br /> Ethylbenzene 1 87 0 050 200 93 5 70-130 <br /> Xylenes(total) 5 15 0 050 600 85 8 70-130 <br /> Methyl tent-butyl ether 236 050 " 200 118 70-130 <br /> Surrogate a,a a-Triffuorotoluene 194 200 970 60-140 <br /> LCS Dup(1120033-BSD1) Prepared&Analyzed 11/30/01 <br /> Benzene l 94 0 050 ing/in'Air 200 970 70-130 749 25 <br /> Toluene 201 0 050 200 100 70-130 775 25 <br /> Ethylbenzene 2 04 0 050 200 102 70-130 870 25 <br /> Xylenes(total) 5 64 0 050 600 940 70-130 908 25 <br /> Methyl tert-butyl ether 239 050 200 120 70-130 1 26 25 <br /> Surrogate a a a-Trifluorotoluene 204 200 102 60-140 <br /> Batch 1120065-EPA 5030B <br /> Blank(1120065-BLKl) Prepared&Anal 11/30/01 <br /> Purgeable Hydrocarbons ND 10 mg/m'Air <br /> Benzene ND 0 050 " <br /> Toluene ND 0 050 " <br /> Ethylbenzene ND 0 050 " <br /> Xylenes(total) ND 0 050 " <br /> Methyl tert-butyl ether ND 050 " <br /> Surrogate a a a-Trrffuorotoluene 187 200 935 60-140 <br /> Sequoia Analytical-Sacramento The results in this report apply to the samples analyzed in accordance with the char <br /> of custody document This analytical report must be reproduced in its entire <br /> Page Page 5 of 9 <br />