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1551 industrial Road <br /> • San Carlos,CA 94070-4111 <br /> Sequoia (650) 232-9600 <br /> FAX(650) 232-%12 <br /> Analytical ,n„w n,sequvlalabs`°m <br /> r <br /> Gettler-Ryan/Geostrategies{1) Prosect Tosco(5) Sampled. 7/5/00 <br /> 6747 Siam Court,Suite J Project Number Unocal Circle K SS#1205 Received 7/5/00 <br /> Dublin,CA 94568 Project Mane er• Deanna Hardin 7/18/00 <br /> iIIIIIFI 2 'd b <br /> ear ie �` ' tw <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Anal :An Level Result Result Units Recov limits % Limit % Notes* <br /> Batch: 0070046 Date Pre ared: 7/11/00 Extraction Method: EPA 5030B <br /> Muh 0070046-BLK1 <br /> Purgeable Hydrocarbons as Gasoline 7/12100 ND ug/l Soo <br /> Benzene " ND " 0.500 <br /> Toluene ND " 0.500 <br /> Ethylbenzene n 111D 0.500 <br /> Xylenes(total) ND 0.500 <br /> Methyl tent-butyl ether ND 5.00 <br /> Surrogate a,a,a-Tnfluorotoluene 100 967 " 700-130 967 <br /> LCS 0070046-BS1 <br /> Benzene 7/12100 100 9 16 ug/l 70 0-130 91 6 <br /> Toluene 100 8 71 700-130 871 <br /> Ethylbenzene " 100 844 700-130 844 <br /> Xylenes(total) " 300 257 " 700-130 85 7 <br /> gate a,a,a-Trifluorotoluene 100 949 700-130 949 <br /> ,CS 0070 <br /> Forgeable Hydrocarbons as Gasoline 7112100 250 218 ug/l 70 0-130 87 2 <br /> Surrogate a,a,a-Trifluorotoluene 100 973 " 700-130 973 <br /> Matrix Spike 0070046-MS1L007039-07 <br /> Benzene 7/12/00 300 ND 104 ug/l 60 0-140 104 <br /> Toluene " 100 ND 9 92 600-140 99.2 <br /> Ethylbenzeie 100 ND 9 71 " 600-140 97.1 <br /> Xylenes(total) 300 ND 289 600-140 %3 <br /> Surrogate a,a,a-Tnfluorotoluene 100 11 7 700-130 117 <br /> Matrix Spike Doi) 0070046-MSDI L007039-07 <br /> Benzene 7/12100 100 ND 102 119/1 600-140 102 250 1.94 <br /> Toluene 100 ND 9 86 600-140 98.6 250 0.607 <br /> Ethylbenzene " 100 ND 9 61 600-140 %1 250 1.04 <br /> Xylenes(total) " 300 ND 290 600-140 96.7 250 OA15 <br /> Surrogate a,a,a-Tnfluorotoluene ff100 114 " 700-130 124 <br /> Batch. 007qQ52 Date Prepared: 713/00 Extraction Method: EPA 5030B IPM <br /> Blank 0970052-BLK1 <br /> Purgeable Hydrocarbons as Gasoline 7/13/00 ND 119/10 <br /> n ND " 0..55 00 <br /> Benzene <br /> nze e n ND 0.500 <br /> To <br /> Ethylbrnzene ND O0"" <br /> Xylenes(total) " ND " 0.500 <br /> pia Analytical-San Carlos *Refer to end of report for text of notes and definitions <br /> Page 7 of 10 <br />