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r i Sequoia 680 Criesapeake Drive Redwood Ci ,CA 94063 <br /> //••�r�r� 404 N.Wiget Lane (650)364-9600 FAX(554)364-9233 <br /> Walnut Creek CA 9459g {915}988 9600 <br /> Analytical <br /> 819 Striker Avenue.Suite 8 FAX(925)988-9673 <br /> VAW Sacramento,CA 95834 (9 16)92f-9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd.North,Ste.D Petaluma.CA 94954 <br /> (707)792-1865 FAX(707)792-0342 <br /> [3939 <br /> nnacle-C.P. Project: ARCO,5469,Stockton CA <br /> Cambridge Road,Ste.220 Project Number: NIA Sample=2/17/99meron Park,CA 95682 Project Manager: Mark Capps ReceivedReported <br /> Total Purgeable Hydrocarbons(C6-Cl2) and BTEX by DHS TUFT/Quality Control <br /> Sequoia Analytical-Sacramento <br /> Analyte <br /> Date Spike Sample QC Reporting Limit Recov, RPD RPD <br /> Analyzed Level Result <br /> ILItCh: 902Q200 <br /> Result Units Recov. Limits % Limit % Notes* <br /> $3.Uik Extraction Method: FPA 5n <br /> 9o2a2on-1;1.r<tllr.r<t tAJe0H) <br /> Purgeable Hydrocarbons 2118/99 <br /> Benzene ND mg/kg 1.00 <br /> Toluene ND 0.00500 <br /> Ethylbenzene ND " 0.00500 <br /> Xylenes(total) ND 0.00500NA " <br /> Surrogate: a,a,a-Triuorotoluene 0.200 0.00500 <br /> 0.169 60.0-140 84.5 <br /> LCS 9020200-SSt <br /> Benzene 2/18/99 0.200 0.185 mglkg 70.0-130 92.5 <br /> Toluene 0.200 0.188 70.0-130 94.0 <br /> Ethylbenzene 0.200 0.188 70.0-130 94.0 <br /> Xylenes(total) 0.600 0.570 70.0-130 95.0 <br /> Surrogate: a,a,a-Triuorotoluene 0.200 0.180 60.0-140 90.4 <br /> Matrix.Pikr 20Z0200_MS1 S9,p2232_02 <br /> Benzene 2/18/99 0.200 ND 0.172 /k <br /> Toluene ., nn S g 60.0-140 86.0 <br /> 0.200 ND 0.241 60.0-140 120 <br /> Ethylbenzene 0.200 ND 0.179 60.0-140 120 <br /> Xylenes(total) 0.600 ND 0.547 60.0-140 99.5 <br /> Surrogate: a,a,a-Trifluoratoluene 0.240 0.188 60.0-140 94.0 <br /> Matrix Spike a Dup 9020200-M_Spi 5902232-02 <br /> Benzene 2/18/99 0.200 ND 0.170 mg/kg 60.0-140 85.0 25.0 1.17 <br /> Toluene 0.200 ND 0.206 60.0-140 103 25.0 15.2 <br /> . . . 1.12 <br /> Ethylbenzene 0.200 ND 0.177 600-140 885 250 <br /> Xylenes(total) 0.600 ND 0.542 60.0-140 90.3 25.0 0.912 <br /> Surrogate: a,a,a-Trifluorotoluene 0.200 0.187 60.0-140 93.5 <br /> Batch: 9020246 Dgic Prepared, 2119/99 Extraction MctbQd-. EPA 5030B(MeOH) <br /> Blank 2929146-RIAll <br /> Purgeable Hydrocarbons 2/19/99 ND mg/kg 1.00 <br /> Benzene ND 0.00500 <br /> Toluene ND 0.00500 <br /> Ethylbenzene ND 0.00500 <br /> Xylenes(total) NDm 0.00500 <br /> Surrogate: a,a,a-Tri luorotoluene 0.200 0./80 60.0-140 90.4 <br /> IES 2914246-13S 1 <br /> Benzene 2/19/99 0.200 0.191 mg/kg 70.0-130 95.5 <br /> Toluene 0.200 0.i 94 70.0-130 97.0 <br /> Sequoia Analytical -Sacramento *Refer to end of report for text of notes and definitions. <br /> i. <br /> Ronald W.Bobel,Client Services Rep esentative Page 5 of 9 <br />