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819 Sinker Avenue Suite 8 <br /> Sequoia Sacramento,)A 95834 <br /> 4D916 921-9600 <br /> �► Anal tical FAX equoi labs c 00 <br /> Y www sequoialabs com <br /> ler-Ryan-Rancho Cordova P%lect Former Unocal 2859, Stockton,CA <br /> 3140 Gold Camp Dr,Ste 170 Protect Number N/A Reported <br /> Rancho Cordova CA,95670 Project Manager David Herzog 03/20/02 16 14 <br /> Total Purgeable Hydrocarbon, BTEX and MTBE by DHS LUFT-Quality Control <br /> Sequoia Analytical - Sacramento <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limil Notes <br /> Batch 2030211 -EPA 5030B(P/T) <br /> Blank(2030211-BLK1) Prepared&Analyzed 03/14/02 <br /> Purgeable Hydrocarbons ND 0 50 mg/kg <br /> Benzene ND 00050 " <br /> Toluene ND 00050 " <br /> Ethylbenzene ND 00050 " <br /> Xylenes(total) ND 00050 " <br /> Methyl tert-butyl ether ND 00050 " <br /> Surrogate a a a-Trifluorotoluene 00174 00200 870 60-140 <br /> LCS(2030211-13S1) Prepared&Analyzed 03/14/02 <br /> Benzene 00176 00050 mg/kg 00200 88 0 70-130 <br /> Toluene 0 0191 00050 00200 95 5 70-130 <br /> Ethylbenzene 00213 00050 00200 106 70-130 <br /> Wes(total) 0 0680 00050 00600 113 70-130 <br /> y1tert-butyl ether 0 0189 0 0050 00200 94 5 70-130 <br /> Surrogate a a a-Trifluorotoluene 0 0176 00200 88 0 60-140 <br /> Matrix Spike 2030211-MS1 Source S203213-06 Prepared&Analyzed 03/14/02 <br /> Benzene 00178 00050 mg/kg 0 0200 ND 89 0 60-140 <br /> Toluene 00182 00050 0 0200 ND 91 0 60-140 <br /> Ethylbenzene 0 0197 0 0050 00200 ND 98 5 60-140 <br /> Xylenes(total) 00571 00050 00600 ND 95 2 60-140 <br /> Methyl tert-butyl ether 0 0182 00050 00200 ND 91 0 60-140 <br /> Surrogate a a a-Trifluorotoluene 00200 00200 100 60-140 <br /> Matrix Spike Du 2030211-MSDI Source S203213-06 Prepared&Analyzed 03/14/02 <br /> Benzene 00172 0 0050 mglkg 00200 ND 860 60-140 3 43 25 <br /> Toluene 00167 00050 00200 ND 83 5 60-140 8 60 25 <br /> Ethylbenzene 0 0192 00050 0 0200 ND 96 0 60-140 2 57 25 <br /> Xylenes(total) 00549 0 0050 00600 ND 91 5 60-140 3 93 25 <br /> Methyl teri-butyl ether 00189 0 0050 00200 ND 94 5 60-140 3 77 25 <br /> Surrogate a a a-Trtfluoroioluene 00174 00200 870 60-140 <br /> Amk <br /> uoia Analytical-Sacramento The results in this repot t apply to the samples analyzed in accordance with the chain <br /> of custody document This analytical report must be reproduced in its entirety <br /> Page Page 6 of 7 <br />