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1551 Industrial Road <br /> 4.1 <br /> Sequoia San Carlos CA 94070-4111 <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 /> Total Purgeable Hydrocarbons (C6-C12),BTEX and MTBE by DHS LIJFT/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 % Lima % Notes* <br /> LCS continued 9110171-BS1 <br /> Ethylbenzene 11/30/99 100 949 ug/l 700-130 949 <br /> Xylenes(total) 300 287 700-130 957 <br /> Surrogate a a a-Trifluorotoluene " 100 .947 70 0-130 94 7 <br /> LCS 9110171-BS2 <br /> Purgeable Hydrocarbons as Gasoline 11/30/99 250 244 ug/l 700-130 976 <br /> Surrogate a,a,a-Trifluoro toluene 11100 940 700-130 940 <br /> _Matrix Spike 9110171-MSI L911260-13 <br /> Purgeable Hydrocarbons as Gasoline 12/1/99 250 ND 240 u9/1 600-140 960 <br /> Surrogate a,a,a-Trifluorotoluene 11100 tl 7 700-130 117 <br /> Matrix Spike Dup 9110171-MSDI L911260-13 <br /> PULgeable Hydrocarbons as Gasoline 12/1/99 250 ND 244 ug/1 600-140 976 250 165 <br /> gate a,a a-Trifluorotoluene 11100 122 " 700-130 122 <br /> Batch 9120001 Date Prepared 12/1199 Extraction Method EPA 5030BPf /Tl <br /> Blank 9120001-BLKI <br /> Purgeable Hydrocarbons as Gasoline 12/1/99 ND ug/1 500 <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 5 00 <br /> Surrogate a,a,a-Trifluorotoluene 100 10 7 700-130 107 <br /> LCS 9120001-BSI <br /> Benzene 12/1/99 100 927 ug/l 700-130 92 7 <br /> Toluene 100 9 01 700-130 901 <br /> Ethylbenzene 100 936 700-130 936 <br /> Xylenes(total) 300 276 700-130 920 <br /> Surrogate a,a,o-Trifluorotoluene 100 110 700-130 110 <br /> LCS 9120001-BS2 <br /> Purgeable Hydrocarbons as Gasoline 12/1/99 250 229 ug/l 700-130 91 6 <br /> Surrogate a a,a-Trifluorotoluene " 100 119 " 700-130 119 <br /> Matrix mike 9120001-MSI L91119I-06 <br /> Benzene 12/1/99 100 ND 936 ug/l 600-140 93 6 <br /> Toluene " 100 ND 907 600-140 90 7 <br /> &hylbenzene 100 ND 939 600-140 93 9 <br /> oia Analytical- San Carlos *Refer to end of report for text of notes and definitions <br /> Page 7 of 12 <br />