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1551 Industrial Road <br /> • ,• Sequoia San Carlos, CA 94070-4111 <br /> (650) 232-9600 <br /> Analytical FAX(650) 232-9612 <br /> Blaine Tech Services Project: Blaine/Chevron Sampled: 12/2/99 <br /> 1680 Rogers Avenue Project Number Chevron 9-05571139 Center,Stockton Received: 12/3199 <br /> San Jose,CA 95112 Project Manager: Scott Boor Reported: 12/17/99 <br /> Total Purgeable Hydrocarbons(C6-C12),BTEX and MTBE by DHS LUF'T/Quality Control <br /> Sequoia Analytical-San Carlos <br /> Date Spike Sampie QC Reporting Limit Recov. RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov. Limits % Limit % Notes* <br /> Batch: 9120047 Date Prepared: 1219/99 Extraction Method: EPA 5030E PIT <br /> Blank 9120047-BLK1 <br /> Purgeable Hydrocarbons as Gasoline 12/9/99 ND ug/l 50.0 <br /> Benzene ND 0.500 <br /> Toluene ND 0.500 <br /> Ethylbenzene It <br /> ND 0.500 <br /> Xylenes(total) ND 0.500 <br /> Methyl tert-butyl ether _ND_ 5.00 - <br /> Surrogate: a,a,a-Trifluorotoluene 10.0 8.81 70.0-130 88.1 <br /> LCS 9120047-BSI <br /> Benzene 1219/99 10.0 8.67 ug/1 70.0-130 86.7 <br /> Toluene 10.0 8.57 70.0-130 85.7 <br /> Ethylbenzene 10.0 8.85 70.0-130 88.5 <br /> Xylenes(total)_ _ 30.0 26.6 _ _ 70A_-130 88.7 _ <br /> trrogate: a,a,a-Trifluoro toluene 10.0 8.67 70.0-130 86.7 <br /> LCS 9120047-BS2 <br /> Purgeable Hydrocarbons as Gasoline 12.19199 250 _ _ 230 ug/l 70.0-130 92.0 <br /> Surrogate: a,a,a-Trifluorotoluene 10.0 7.92 70.0-130 79.2 <br /> Matrix Spike 9120047-MSI L912048-03 <br /> Benzene 12/9/99 10.0 ND 8.89 ug/1 60.0-140 88.9 <br /> Toluene 10.0 ND 8.79 60.0-140 87.9 <br /> Ethylbenzene 10.0 ND 9.17 60.0-140 91.7 <br /> _Xylenes(total) 30.0 ND 26.9 60.0-140 89.7 <br /> Surrogate: a.a,a-Trifluorotoluene 10.0 9.69 70.0-130 96.9 <br /> Matrix Spike Dun 9120047-MSDI L912048-03 <br /> Benzene 1219/99 10.0 ND 9.70 ug l 60.0-140 97.0 25.0 8.71 <br /> Toiuene 10.0 ND 9.62 60.0-140 96.2 25.0 9.02 <br /> Ethvlbenzene 10.0 ND 9.91 60.0-140 99.1 25.0 7.76 <br /> Xylenes(total) 30.0 ND 29.4 60.0-140 98._0 25.0 8.84 <br /> Surrogate: a.a.a-Trifluorotoluene 10.0 9.16 70.0-130 91.6 <br /> Batch: 9120052 Date Prepared: 12/10/99 Extraction Method: EPA 5030B 1PIT1 <br /> Blank 9120052-BLK1 <br /> Purgeablc Hydrocarbons as Gasoline 12/10/99 ND ug/l 50.0 <br /> Benzene ND 0.500 <br /> Toluene ND 0.500 <br /> Ethvlbenzene ND 0.500 <br /> Xvlenes(total) ND 0.500 <br /> quoia Analytical- San Carios *Refer to end of report for text of notes anddef nisions. <br /> aagc 12 Of 15 <br />