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Sequoia 1551 Industrial <br /> a) San Carlos,CA 94070-4111 <br /> 1 4 (650)232-9600 <br /> Analytical <br /> FAX(650)232-9612 <br /> :v7 <br /> Sequoia-Walnut Creek Project: Gettler-Ryan Inc./TOSCO Sampled: 8/11/99 <br /> 404 N.Wigett Lane Project Number: W90827lfUnocal SS#11195, 180175.85 Received: 8/18/99 <br /> Walnut Creek,CA 94568 Project Manager: Julianne Fegley Reported: 8/26/99 <br /> Total Purgeable Hydrocarbons(C6-C12),BTEX and NME 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 /> Blank(continued) 9080129-BLK1 <br /> Surrogate: a,a,a-Tris luorotoluene 8/23199 10.0 8.58 119/1 70.0-130 85.8 <br /> LCS 9080129-BS1 <br /> Purgeable Hydrocarbons as Gasoline 8/23/99 250 268 ug/l 70.0-130 107 <br /> Surrogate: a,a,a-Tris luorotoluene " 10.0 9.24 it70.0-130 92.4 <br /> Matrix Spike 9080129-MSI L908062-02 <br /> Purgeable Hydrocarbons as Gasoline 8/24/99 250 ND 223 ug/I 60.0-140 89.2 <br /> Surrogate: a,a,a-Triuorotoluene ff10.0 7.99 " 70.0-130 79.9 <br /> Matrix Spike Dup 9080129-MSD1 L908062-02 <br /> Purgeable Hydrocarbons as Gasoline 8/24/99 250 ND 255 ug/l 60.0-140_ _1_02 25.0 13.4 <br /> Surrogate: a,a,a-Triuorotoluene 10.0 9.15 70.0-130 91.5 <br /> s'r <br /> y <br /> aEquoia Analytical-San Carlos *Refer to end of report far text of notes and definitions. <br /> Page 16 of 17 <br />