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Sequoia 1551 A 94070-4111 <br /> 4070/ Road <br /> San Carlos CA 94070-4i 1 1 <br /> (650) 232-9600 <br /> Analytical FAX (650) 232-9612 <br /> Blaine Tech Services Project Chevron(3) Sampled 11/17/99 <br /> 1680 Rogers Avenue Project Number Chevron 9-6171/991117-R2 Received 11/18/99 <br /> San Jose, CA 95112 Project Manager Scott Boor Reported 12/7/99 <br /> T Total P:irgeable Hydrocarbons (C6-C12),BTEX and MTBE by DHS LUFTIQuifity Control - <br /> Sequoia Analytical-San Carlos _ <br /> Date Spike Sample QC Reporting Lunn Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Limit ON Notes* <br /> Matrix Spike Dup(continuedil 9120002-MSD1 L911230-15 <br /> Ethylbenzene 12/2/99 100 ND 994 ug/1 600-140 994 250 828 <br /> Xylenes(total) " 300 ND 297 " 600-140 990 250 809 <br /> Surrogate a,a,a-Trifluorotoluene N100 861 Ff 700-130 861 <br /> Batch 9120003 Date Prepared 1211/99 Extraction Method EPA 5030B PIT <br /> Blank 9120003-BLKI <br /> Purgeable Hydrocarbons as Gasoline 12/1/99 ND ug/] 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 Soo <br /> Surrogate a,a,a-Triuorotoluene 100 9 80 700-130 980 <br /> 9120003-BSI <br /> itene 12/1/99 100 9 93 ug/1 700-130 993 <br /> Toluene 100 9 56 700-130 956 <br /> Ethylbenzene 100 956 700-130 956 <br /> Xylenes(total) 300 288 700-130 96 0 <br /> Surrogate a a,a-Trtfluorotoluene 100 105 700-130 105 <br /> LCS 9120003-BS2 <br /> Purgeable Hydrocarbons as Gasoline 12/1/99 250 237 ug/l 700-130 948 <br /> Surrogate a a a-Trifluorotoluene ep 100 135 700-130 135 2 <br /> Matrix Spike 9120003-MSI L911260-04 <br /> Benzene 12/1199 100 ND 893 ug/1 600-140 893 <br /> Toluene " 100 ND 958 600-140 858 <br /> Ethylbenzene 100 ND 954 600-140 854 <br /> Xylenes(total) 300 ND 25 9 600-140 863 <br /> Surrogate a,a a-Trtfluorotoluene 100 100 700-130 100 <br /> Matrix Spike Dup 9120003-MSDI L911260-04 <br /> Benzene 12/1199 100 ND 9 91 ug/l 600-140 991 250 10 4 <br /> Toluene 11100 ND 945 11600-140 945 25 0 965 <br /> Ethylbenzene 100 ND 934 n 600-140 934 250 895 <br /> Xylenes(total) 300 ND 28 6 600-140 95.3 25 0 9 91 <br /> Surrogate a a,a-Trifluorotoluene 100 9 55 700-130 955 <br /> 3011poia Analytical- San Carlos *Refer to end of report for text of notes and definitions <br /> Page 9 of 12 <br />