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i1} Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)36A-9600 FAX FAX(690)364-9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (925)988-9FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> %0 Analytical 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707)792-1865 FAX(707)792-0342 <br /> 1551 Industrial Road San Carlos CA 94070-4111 (650)232-9600 FAX(650)232-9612 <br /> 9 <br /> SECOR International Project ARCO 2133,Stockton,CA Sampled 3/10/99 to 3/11/99 <br /> 9912 Business Park Dnve,Ste 100 Project Number N/A Received 3/12199 <br /> Sacramento,CA 95827 Project Manager Rusty Benkosky Reported 3126/99 <br /> Total Purgeable Hydrocarbons`(C6-02),BTEX and MTBE by DHS LUFTIQualtty,Control =" <br /> Sequoia Analytical-Sacramento <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> lAnalyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> 9030281-BS] <br /> Methyl tert-butyl ether 3/23/99 100 106 ug/l 700-130 106 <br /> Surrogate a,a,a-Triuorotoluene " 100 9 79 IF600-140 979 <br /> Matrix Spike 9030284-MS1 $903220-06 <br /> Benzene 3123199 too ND 895 ug/I 600-140 895 <br /> Toluene too ND 904 600-140 904 <br /> Ethylbenzene 100 ND 892 600-140 892 <br /> Xylenes(total) 300 ND 26 8 600-140 $93 <br /> Methyl tert-butyl ether 10 0 ND 106 600-140 106 <br /> Surrogate a a a-Triuorotoluene 100 963 IF 600-140 963 <br /> 5903220-06 <br /> Benzene 3/22/99 100 ND 900 ug/I 600-140 <br /> 490 0 25 0 0 557 <br /> fV1ylbenzenc <br /> uene too ND 9 11 600-140 91 1 25 0 0 771 <br /> too ND 897 600-140 897 25 0 0 559 <br /> enes(total) 300 ND 27 1 600-140 903 25 0 1 11 <br /> Methyl tent-butyl ether 10 0 NO 11 3 600-140 113 25 0 639 <br /> Surrogate a,a,a-Triuorotoluene 100 945 600-140 945 <br /> _Batch. 9030306 Date Prepared, 123/99 Extrartion Method. EPA SQ30B(PIT) <br /> Blank 9030306-B[,K] <br /> Purgeable Hydrocarbons 3/23/99 ND ug/I Soo <br /> BenzeneIF PID 0 500 <br /> TolueneI. ND 1. 0 500 <br /> Ethylbenzene I. ND 0 500 <br /> Xylenes(total) I. ND 0 500 <br /> Methyl tent-butyl ether ND Soo <br /> Surrogate a,a,a-Trifluorotoluene IF 100 956 IF600-140 95 6 <br /> IC,S 9030306-SS 1 <br /> Benzene 3/23/99 100 891 ug/I 700-130 89 1 <br /> Toluene 100 902 1. 70 0430 902 <br /> Ethylbenzene 100 892 700-130 89 2 <br /> Xylenes(total) 300 267 700-130 89 0 <br /> Methyl tert-butyl ether l0 0 100 700-130 100 <br /> Surrogate a,a,a-Triuorotoluene 100 9-51 600-140 95 1 <br /> Matrix Spike 9030306-MSI S903287-01 <br /> Benzene 3/23/99 100 ND 890 ug/l 600-140 890 <br /> Toluene 100 ND 11 3 600-140 113 <br /> thylbenzene 100 ND 908 600-140 908 <br /> Sequoia Analytical-Sacramento 'Refer to end of report far text of notes and def nitrons <br /> Sandra a an,Chelrif Services Representative Page 9 of 1! <br />