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819 Striker Avenue,Suite 8 <br /> Sequoia Sacramento,91(5 C 95834 <br /> {916)922]-96)0 <br /> Analytical www.sequoialabs.com(916)90 <br /> wwequoiaiabs.coabs.com <br /> Gettler-Ryan-Dublin Project: Chevron 9-0557, Stockton,CA Sampled: 5117100 <br /> 6747 Sierra Court, Ste.J Project Number: 386843 Received: 5122100 <br /> Dublin,CA 94568 Pro'ect Manager: Deanna L.Hardin Reported: 616100 <br /> Total Purgeable Hydrocarbons(C6-C12),BTEX and MTBE by DHS LUFT/Quality Control <br /> Sequoia Analytical-Sacramento <br /> Date Spike Sample QC Reporting Limit Recov. RPD RPD <br /> Lalyte Analyzed Level Result Result Units Recov. Limits % Limit % Notes' <br /> Blank(continued) 0050324-BLK1 <br /> : <br /> Surrogatea,a,a-Triuorotoluene 5/26/00 - 10.0 10.2 ug/l 60.0-140 102 <br /> LCS 0050324-BSI <br /> Benzene 5126100 10.0 9.88 ug/1 70.0-130 98.8 <br /> Toluene It 10.0 10.2 " 70.0-130 102 <br /> Ethylbenzene " 10.0 10.0 P. <br /> 70.0-130 100 <br /> Xylenes(total) " 30.0 30.2 " 70.0-130 101 <br /> Methyl tert-butyl ether 10.0 10.3 1. 70.0-130 103 <br /> Surrogate: a,a,a-Trifluorotoluene " 10.0 11.0 to 60.0-140 110 <br /> Matrix Spike 0050324-MS1 S005315-03 <br /> Benzene 5/26/00 10.0 ND 8.68 ug/l 60.0-140 86.8 <br /> Toluene " 10.0 ND 8.76 " 60.0-140 87.6 <br /> E nzene 10.0 ND 8.98 60.0-140 89.8 <br /> X s(total) 30.0 ND 25.4 It 60.0-140 84.7 <br /> Methyl ten-butyl ether 10.0 ND 9.67 60.0-140 96.7 <br /> Surrogate: a,a,a-Trifluorotoluene to10.0 7.76 60.0-140 77.6 <br /> Matrix Spike Dun 0050324-MSDI S005315-03 <br /> Benzene 5126100 10.0 ND 9.11 ug/l 60.0-140 91.1 25.0 4.83 <br /> Toluene 10.0 ND 9.07 60.0-140 90.7 25.0 3.48 <br /> Ethylbenzene 10.0 ND 9.31 to 60.0-140 93.1 25.0 3.61 <br /> Xylenes(total) to 30.0 ND 26.2 to60.0-140 87.3 25.0 3.02 <br /> Methyl tert-butyl ether " 10.0 ND 10.0 60.0-140 100 25.0 3.36 <br /> Surrogate: a,a,a-Triuorotoluene 10.0 9.34 60.0-140 93.4 <br /> Ratch: 9050336 Date Prepared: 5130100 Extraction Method: EPA 5030B(MeOM <br /> Blank 0050336-BLKI <br /> Purgeable Hydrocarbons 5130100 ND ug(l 50.0 <br /> Benzene If ND to 0.500 <br /> Toluene " ND It <br /> 0.500 <br /> Ethylbenzene ND 0.500 <br /> Xylenes(total) ND 0.500 <br /> Methyl tent-butyl ether ND 2.50 <br /> Surrogate: a,a,a-Triuorotoluene 10.0 10.8 60.0-140 108 <br /> 0050336-BS 1 <br /> Benzene 5/30/00 10.0 10.2 ug/1 70.0-130 102 <br /> Toluene 10.0 10.2 to 70.0-130 102 <br /> Ethylbenzene 10.0 10.4 it 70.0-130 104 <br /> V(total) 30.0 30.9 It 70.0-130 103 <br /> Sequoia Analytical-Sacramento *Refer to end of report for text of notes and definitions. <br /> page 6 of 8 <br />