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680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> Sequoia N Wiget Lane Walnut Creek.CA 94598 (925)988-9600 FAX(925)988-9673 <br /> �,I,,a Analytical 819 Striker Avenue Suite 0 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd Horth Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> 0 <br /> SECOR International Project TOSCO 8671,Stockton,CA Sampled 1/27/99 to 1128/99 <br /> 9912 Business Park Drive,Ste 100 Project Number 7C888-010-03 Received 1129/99 <br /> Sacramento,CA 95827 Project Manager Rusty Benkosky Reported 2112199 <br /> Total Purgeable Hydrocarbons(C6-C12),BTEX and MTBE by DHS LUFF/Quality Control <br /> Sequoia Analytical-Sacramento <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Batch. 9020029 Date Prepared. 212194 Extraction Method, EPA 50306(MeOH) <br /> ];fang 9020029-BLK1 <br /> Purgeable Hydrocarbons 213/99 ND mg/kg 100 <br /> Benzene " ND 000500 <br /> Toluene ND 000500 <br /> Ethylbenzene ND 000500 <br /> Xylenes(total) ND 000500 <br /> Methyl tert-butyl ether ND 00500 <br /> Surrogate a a a-Triuorotoluene 0 200 0203 600-140 101 <br /> LCS 902002 <br /> Benzene 213/99 0200 0209 mg/kg 700-130 105 <br /> Toluene 0200 0 214 700-130 107 <br /> Ethylbenzene 0200 0 213 700-130 106 <br /> Xylenes(total) 0 600 0 633 700-130 105 <br /> Aftthyl tert-butyl ether 0200 0205 700-130 102 <br /> rrogate a a a-Trifluorotoluene 0200 0204 600-140 102 <br /> Matrix Sprig 9020029-MS1 590126514 <br /> Benzene 213199 0200 ND 0 174 mg/kg 600-140 870 <br /> Toluene 0200 ND 0 179 600-140 89 5 <br /> Ethylbenzene 0200 ND 0 181 600-140 905 <br /> Xylenes(total) 0 600 ND 0 544 600-140 907 <br /> Methyl tert-butyl ether 0200 ND 0 185 600-140 925 <br /> Surrogate a a,a-Trifluorotoluene " 0200 0206 600-140 103 <br /> Matrix Spike Run 9020029-MSD1 S901265-14 <br /> Benzene 2/3/99 0200 ND 0 172 mg/kg 600-140 860 25 0 1 16 <br /> Toluene " 0200 ND 0 169 1. 600-140 845 250 575 <br /> Ethylbenzene 0200 ND 0 178 600-140 890 25 0 167 <br /> Xylenes(total) 0 600 ND 0 538 600-140 89 7 250 1 11 <br /> Methyl tert-butyl ether 0200 ND 0 186 600-140 93 0 25 0 0 539 <br /> Surrogate a a a-Trifluorotoluene 0200 0198 600-140 99 0 <br /> Batch, 9920031 Date Prepared, 212/92 Extraction Method, EPA 5030B(MeOU) <br /> Blank 9020031-BIA1 <br /> Purgeable Hydrocarbons 2/2/99 ND mg/kg 100 <br /> Benzene ND 000500 <br /> Toluene ND 000500 <br /> Ethylbenzene ND 000500 <br /> Xylenes(total) ND 000500 <br /> Methyl tert-butyl ether ND 00500 <br /> quoia Analytical-Sacramento *Refer to end of report for text of notes and definitions <br /> q-S�24:2L <br /> Sandra R Hansb,Bent Services Representative Page 6 of 1 1 <br />