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Sequoia 819 Striker Avenue Suite 8 <br /> Sacramento CA 95834 <br /> (916)921-9600 <br /> Analytical FAX(916) 00 <br /> FAX <br /> sequoialabs alabs com <br /> Gettler-Ryan- Rancho Cordova Project Unocal 0187, Stockton,CA Sampled 10/31/00 <br /> 3164 Gold Camp Dr Ste 240 Project Number NIA Received 11/1/00 <br /> Rancho Cordova CA 95670 Project Manager David Herzog Reported 11/7/00 <br /> Total Purgeable Hydrocarbons(C6-C12),BTEX and MTBE by DHS LUE'T/Quality Control <br /> Sequoia Analytical-Sacramento <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Analyzed Leve] Result Result Units Recov Limits % Lima % Notes* <br /> Batch 0110038 Date Prepared 1113100 Extraction Method EPA 5030B(MeOH) <br /> Blank 0110038-BLK1 <br /> Purgeable Hydrocarbons 11/3100 ND mg/kg 100 <br /> Benzene ND 000500 <br /> Toluene ND 000500 <br /> Ethylbenzene ND 000500 <br /> Xylenes(total) ND 000500 <br /> Methyl tent-butyl ether ND 00500 <br /> Surrogate a a a-Trifluorotoluene 0200 0 223 600-140 112 <br /> LCS 0110038-BS1 <br /> Benzene 11/3/00 0200 0 197 mg/kg 700-130 98 5 <br /> thyi <br /> ene 0200 0 217 700-130 108 <br /> benzene 0200 0 229 700-130 114 <br /> nes(total) 0 600 0 593 700-130 988 <br /> yl tert-butyl ether 0200 0 192 700-130 960 <br /> Surrogate a a,a-Trifluorotoluene 0200 0 233 600-140 116 <br /> Matrix Spike 0110038-MSI 5011014-03 <br /> Benzene 11/3/00 0200 ND 0 178 mg/kg 600-140 890 <br /> Toluene 0200 ND 0 196 600-140 980 <br /> Ethylbenzene 0200 ND 0206 600-140 103 <br /> Xylenes(total) 0 600 ND 0 533 600-140 88 8 <br /> Methyl tert-butyl ether 0200 ND 0 167 600-140 835 <br /> Surrogate a a a-Trifluorotoluene 0200 0 244 600-140 122 <br /> Matrix Spike Dun 0110038-MSDI 5011014-03 <br /> Benzene 1113/00 0200 ND 0 182 mg/kg 600-140 910 25 0 222 <br /> Toluene 0200 ND 0 199 600-140 995 250 152 <br /> Ethylbenzene 0200 ND 0209 60 0440 105 25 0 192 <br /> Xylenes(total) 0 600 ND 0 538 600-140 897 250 101 <br /> Methyl tert-butyl ether 0200 ND 0 174 600-140 870 25 0 4 11 <br /> Surrogate a a a-Trifluorotoluene 0200 0 245 600-140 123 <br /> r <br /> • <br /> Sequoia Analytical- Sacramento *Refer to end of report for text of notes and definitions <br /> Page 3 of 4 <br />