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Sequoia los, Industrial Road <br /> ■ID (650) <br /> San Carlos.CA 94070-4111 <br /> 232-9600 <br /> Analytical FAX(650) 232-9612 <br /> Blaine Tech Services Project: Blaine/Chevron Sampled: 12/2199 <br /> 1680 Rogers Avenue Project Number: Chevron 9-0557/139 Center,Stockton Received: 12/3/99 <br /> San Jose,CA 95112 Project Manager: Scott Boor Reported: 12/17/99 <br /> Total Purgeable Hydrocarbons(C6-C12),BTEX and MTBE by DHS LUFTIQuality 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 /> Blank continued 9120052-BLKI <br /> Methyl tert-butyl ether _ 12/10_/99 _ ND ug/l _5_A0__ <br /> Surrogate: a,a,a-Trifluorotoluene 10.0 8.14 �" 70.0-130 81.4 <br /> LCS 9120052-BSI <br /> Benzene 12/10/99 10.6 8.44 ug/l 70.0-130 84.4 <br /> Toluene 10.0 8.35 70.0-130 83.5 <br /> Ethylbenzene 10.0 8.61 70.0-130 86.1 <br /> Xylenes(total) 30.0 25.9 70.0-130 _86.3 <br /> Surrogate: a,a,a-Trifluorotoluene 10.0 8.31 70.0-I30 83.1 <br /> LCS 9120052-BS3 <br /> Purgeable_Hydrocarbons as Gasoline 12/10/99 250---_ 265 ug/l 70.0-130 106 - <br /> Surrogate: a,a,a-Trifluorotoluene 10.0 8.41 70.0-130 84.1 <br /> Ahlatrix Spike 9120052-MSI L912060-02 <br /> urgeable Hydrocarbons as Gasoline _12/10/99 250_ -ND _ 259 ugh 60.0-140_ 104 <br /> Surrogate: a,a,a-Trifluorotoluene 10.0 9.16 70.0-130 91.6 <br /> Matrix Spike Dup 9120052-MSD1 L912060-02 <br /> Purgeable Hydrocarbons as Gasoline 12/10/99 250 ND 256 ug/l 60.0-140 102 25.0 1.94 __ <br /> Surrogate: a,a,a-Trifluorotoluene 10.0 9.54 70.0-130 95.4 <br /> Batch: 9120053 Date Prepared: 12/10/99 Extraction Method: EPA 5030E [P/Tl <br /> Blank 9120053-BLKI <br /> Purgeable Hydrocarbons as Gasoline 12/10/99 ND ug/l 50.0 <br /> Benzene ND 0.500 <br /> Toluene ND 0.500 <br /> Ethylbenzene ND 0.500 <br /> Xylenes(total) ND 0.500 <br /> Methyl ter-butyl ether ND 5'00 -- <br /> Surrogate: a,a,a-Triuorotoluene 10.0 92.0 70.0-130 NR <br /> LCS 9120053-BS1 <br /> Benzene 12/10/99 10.0 8.52 ug/l 70.0-130 85.2 <br /> Toluene 10.0 8.17 70.0-130 81.7 <br /> Ethylbenzene 10.0 8.20 70.0-130 82.0 <br /> Xvlen_es(total) 30.0 24.8 70.0-130 82.7 _ <br /> Surrogate: a.a,a-Trifluorotoluene 10.0 83.4 70.0-130 NR <br /> LCS 9120053-BS2 <br /> Purgeable Hvdrocarbons as Gasoline 12/10/99 250 266 u2r1 70.0-130 106 <br /> equoia Analytical-San Carlos `Reser to end o7'reportfor text of notes and definitions. <br /> Page 13 of 15 <br />