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680 Chesapeake Drive Redwood City,CA 94063 1650)364-9600 FAX(650)364-9233 <br /> Sequoia 404 N.Wiget Lane Walnut Creek,CA 94598 (925)988.9600 FAX(925)988-9673 <br /> 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916)921-9600 FAX(916)921-0100 <br /> Analytical 1455 McDowell Blvd.North,Ste.D Petaluma,CA 94954 (707)792-1865 FAX(707)742-0342 <br /> 1551 Industrial Road San Carlos,CA 94070-4111 (650)231-9600 FAX(650)232-9612 <br /> ITiPEG Corporation Project: TOSCO#4409,Stockton,CA Sampled: 4/8199 <br /> rp <br /> 11315 Sunrise Gold Circle Ste. M Project Number: 911-011.1A Received: 4/9/99 <br /> Rancho Cordova,CA 95742 Project Manager: Mike Mitchener Reported: 4113/99 <br /> Total Purgeable Hydrocarbons(C6-C12),BTEX and MTBE by DHS LUFT/Quality Control <br /> Sequoia Analytical-Sacramento <br /> Date Spike Sample QC Reporting Limit Recov. RPD RPD <br /> lAnaly-te Analyzed Level Result Result Units Recov.Limits % Limit % Notes* <br /> Batch: 9040120 Date Prepared: 4112199 Extraction Metbusl: EPA 5030B(PM <br /> Blank 9940120-BLKI <br /> Purgeable Hydrocarbons 4/12199 ND mg/kg 1.00 <br /> Benzene ND 0.00500 <br /> Toluene ND " 0.00500 <br /> Ethylbenzene ND 0.00500 <br /> Xylenes(total) ND 0.00500 <br /> Methyl tert-butyl ether ND 0.0500 <br /> Surrogate: a,a,a-TriJluorotoluene 0.100 0.194 60.0-140 97.0 <br /> L 9040120-BSI <br /> Benzene 4/12199 0.200 0.204 m8/k9 70.0-130 102 <br /> Toluene to 0.200 0.219 70.0-130 109 <br /> Ethylbenzene 0.200 0.219 70.0-130 109 <br /> �tenes(total) 0.600 0.594 74.0-130 98.3 <br /> hyl tert-butyl ether 0.200 0.186 70.0-130 93.0 <br /> Surrogate: a,a,a-Trifluorotoluene 0.200 0.199 60.0-140 99.5 <br /> i <br /> Matrrx.mike X40720-MSI 5904045-06 <br /> Benzene 4112/99 0.200 ND 0.147 mglkg 60.0-140 73.5 <br /> Toluene It <br /> 0.200 ND 0.161 60.0-140 80.5 <br /> Ethylbenzene or0.200 ND 0.161 64.0-140 80.5 <br /> Xylenes(total) 0.600 ND 0.456 60.0-140 76.0 <br /> j Methyl tert-butyl ether 0.200 ND 0.126 60.0-140 63.0 <br /> Surrogate: a.a,a-Trifluorotoluene 0.100 0.190 60.0-140 95.0 <br /> Matrix Spike Dup 904017@-MSDI S904045-06 <br /> Benzene 4/12/99 0.200 ND 0.146 mg/kg 60,0-140 73.0 25.0 0.683 <br /> Toluene 0.200 ND 0.165 60.0-140 82.5 25,0 2.45 <br /> Ethylbenzene 0.200 ND 0.162 60.0-140 81.0 25.0 0.619 <br /> Xylenes(total) 0.600 ND 0.455 60.0-140 75.8 25.0 0.264 <br /> Methyl tert-butyl ether 0.200 ND 0.127 60.0-140 63.5 25.0 0.791 <br /> Surrogate: a,a,a-Trifluorotoluene or 0.100 0.194 to 60.0-140 97.0 <br /> i <br /> I <br /> I <br /> -Sequoia Analytical-Sacramento *Refer to end of report for text of notes and definitions. <br /> 71� <br /> 12 <br /> efnitions. <br /> 12 <br /> &draHanson,Client Services Representative Page 5 of 8 <br />