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680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650) 364-9233 <br /> Sequoia 404 N Wiget Lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> 1455McDowell 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 /> ATC Associates,Inc(1) Project ATC Projects Sampled 4/5/99 <br /> 1117 Lone Palm Ave,Suite B Project Number Gardner Property 62586 0001 04 Received 4/5/99 <br /> Modesto,CA 95351 Project Manager Tom Lutterman Reported 4/19/99 <br /> Total Purgeable Hydrocarbons(C&C12),BTEX and MTBE by DHS LUFT/Quality Control <br /> Sequoia Analytical-San Carlos <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> LCS 9040067-BSI <br /> Benzene 4/13/99 100 100 ug/1 700-130 100 <br /> Toluene 100 9 95 700-130 995 <br /> Ethylbenzene 100 9 92 700-130 992 <br /> Xylenes(total) 300 299 700-130 997 <br /> Surrogate a,a,a-Trlfluorotoluene 100 9 70 700-130 970 <br /> Matrix Spike 9040067-MS1 L904051-02 <br /> Benzene 4/13/99 100 ND 9 93 ug/1 600-140 993 <br /> Toluene 11 100 ND 9 12 600-140 912 <br /> Ethylbenzene 100 ND 948 600-140 948 <br /> Xylenes(total) 300 ND 28 2 60 0-140 940 <br /> Surrogate a,a,a-Tnfluorotoluene 100 101 700-130 101 <br /> UsLtrix Spike Duo 9040067-MSD1 L904051-02 <br /> Vue'7 4/13/99 100 ND 9 92 ug/1 600-140 992 25 0 0 101 <br /> ene 100 ND 947 600-140 947 250 377 <br /> Ethylbenzene loo ND 952 600-140 952 25 0 0 421 <br /> Xylenes(total) 300 ND 283 600-140 943 25 0 0 319 <br /> Surrogate a,a,a-Tnfluorotoluene 100 109 700-130 109 <br /> Batch 9040069 Date Prepared 4113/99 Extraction Method _EPA 5.030B IP/T1 <br /> Blank 9040€169-BLK1 <br /> Purgeable Hydrocarbons as Gasoline 4/13/99 ND Ug/1 500 <br /> Benzene ND 11 0 500 <br /> Toluene ND 0 500 <br /> Ethylbenzene ND 0 500 <br /> Xylenes(total) ND 0 500 <br /> Methyl.tert-butyl ether IF <br /> ND 11 500 <br /> Surrogate a a,a-Tri luorotoluene IF 100 110 11 700-130 110 <br /> LCS 9040069-BSI <br /> Benzene 4/13199 100 988 ug/l 700-130 988 <br /> Toluene 100 956 700-130 956 <br /> Ethylbenzene too 9 99 700-130 999 <br /> Xylenes(total) 300 290 700-130 967 <br /> Surrogate a,a a-Triflucrotoluene 100 113 700-130 113 <br /> Matrix Spike 9040069-MSI L904051-04 <br /> Benzene 4/13/99 loo ND 103 ug/1 600-140 103 <br /> Toluene loo ND 9 80 600-140 980 <br /> Ethylbcnzene 100 ND 102 600-140 102 <br /> ota Analytical-San Carlos *Refer to end of report for text of notes and definrtrons <br /> Page 9 of 11 <br />