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0680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)3649233 <br /> S e qu o 1 a 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)792-0342 <br /> !551 Industrial Road San Carlos CA 94070-4111 (650)232-9600 FAX(650)232-9612 <br /> Pacific Environmental Group-Sac Project Chevron, 1001621 Banta CA Sampled 2/23/99 <br /> 11315 Sunrise Gold Circle St M Project Number 920 002 2D Received 2/26/99 <br /> Rancho Cordova,CA 95742 Project Manager Chris Brown Reported 3/12/99 <br /> Total Purgeable Hydrocarbons(C6-02),BTEX and MTBE by DHS LUPI'/Quality Control <br /> Sequoia Analytical-Sacramento <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> IAnalyte Analyzed Level Result Result Units Recov Limits % Limit % Notes• <br /> Batch. 9030029 Date PrSpared. 312199 Fxtraction Method, EPA 5030B(PLE) <br /> Blank 9030029-BLK1 <br /> Purgeable Hydrocarbons 3/2/99 ND ug/l 500 <br /> Benzene ND 0 500 <br /> Toluene ND 0 500 <br /> Ethylbenzene ND 0 500 <br /> Xylenes(total) ND 0 500 <br /> Methyl tert-butyl ether ND 500 <br /> Surrogate a a,a-Trifluorotoluene 100 981 600-140 981 <br /> LES 9030029-BSI <br /> Benzene 3/2/99 100 9 29 ugll 700-130 929 <br /> Toluene 100 9 35 700-130 93 5 <br /> E benzene 100 926 700-130 92 6 <br /> lWis(total) 300 283 700-130 943 <br /> yl ter-butyl ether 100 113 700-130 113 <br /> Surrogate a,a a-Trifluorotoluene 100 938 600-140 93 8 <br /> Matrix Spike 9030029-MSI 5902329-08 <br /> Benzene 312/99 100 ND 950 ug/I 600-140 950 <br />� Toluene <br /> " 100 ND 965 600-140 965 <br /> Ethylbenzene 100 ND 956 600-140 956 <br /> Xylenes(total) 300 ND 288 600-140 960 <br /> Methyl tert-butyl ether 100 ND 108 600-140 108 <br /> Surrogate a,a a-Trifluorotoluene 100 8 54 600-140 85 4 <br /> MatriX Spike Du 9030029-MSD/ $902329-08 <br /> Benzene 3/2/99 100 ND 914 ug/1 600-140 914 250 3 86 <br /> Toluene 100 ND 930 600-140 93 0 250 3 69 <br /> Ethylbenzene 100 ND 9 25 600-140 925 250 330 <br /> Xylenes(total) 300 ND 28 0 600-140 933 250 285 <br /> Methyl tert-butyl ether 100 ND 11 7 600-140 117 250 800 <br /> Surrogate a,a,a-TrYIuorotoluene 100 856 600-140 85 6 <br /> Batch, 9030-038 Date Prepared. 312199 Extraction Method, EPA 5030B(P/T) <br /> Blink 9030038-BLK1 <br /> Purgeable Hydrocarbons 3/2199 ND ug/I 500 <br /> Benzene ND 0 500 <br /> Toluene ND 0 500 <br /> Ethylbenzene ND 0 500 <br /> *enes(total) ND 0 500 <br /> 1 tert-butyl ether ND 500 <br /> Sequoia Analytical-Sacramento "Refer to end of report for text of notes and definitions <br /> 4a,5�rajiZHan�so,,Client Services Representative Page 11 of 17 <br />