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819 Striker Avenue Suite 8 <br /> Sequoia Sacramento C95834 <br /> (916)922 t-9600 <br /> FAX(916)921-0100 <br /> Analytical www sehuoialabs com <br /> Gettler-Ryan-Rancho Cordova Project Unocal 0187 Stockton,CA Sampled 10/30/00 <br /> 3164 Gold Camp Dr, Ste 240 Project Number NIA Received 10/31/00 <br /> Rancho Cordova CA 95670 Project Manager David Herzog Reported 11/7/00 <br /> Total Purgeable Hydrocarbons(C6-C12), BTEX and MTBE by DHS LUFT/Quality Control - <br /> Sequola Analytical-Sacramento <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> lAnalvte Analyzed Level Result Result Units Recov Limits % Limit % Notes" <br /> Batch 0110038 Date Prepared 11/3100 Extraction Method EPA 5030B McOH <br /> Blank 0110038-BLK1 <br /> Purgeable Hydrocarbons 1113/00 ND mg/kg 100 <br /> Benzene ND 000500 <br /> Toluene ND 000500 <br /> Ethylbenzene ND 000500 <br /> Xylenes(total) ND 000500 <br /> Methyl tert-butyl ether ND 00500 <br /> Surrogate a a a-Trifluorotoluene 0200 0 223 600-140 112 <br /> LCS 0110038-BSI <br /> Benzene 1113/00 0200 0 197 mg/kg 700-130 98 5 <br /> Toluene _ 0200 0 217 700-130 108 <br /> Ethylbenzene 0200 0 229 700-130 114 <br /> Xylenes(total) 0 600 - 0 593 - 700-130 - 988 1 <br /> Methyl 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 _S011014-03 <br /> Benzene F 1113/00 0 200 ND 0 f 78 mg/kg 60f0-140 890 - <br /> Toluene _ 0 200 _ ND_ 0 196 600-140 98 0 <br /> Ethylbenzene _ 0200 ND 0206 _ 600-140 103 _ <br /> Xylenes(total) _ 0 600 ND 0 533 600-140 888 <br /> Methyl tert-butyl ether 0200 ND 0 167 600-140 83 5 <br /> Surrogate a a,a-Triuorotoluene 0200 0 244 600-140 122 <br /> Matrix Spike Dun 0110038-MSDI 5011014-03 <br /> Benzene 1113/00 0200 ND 0 182 mg/kg 600-140 910 250 222 <br /> Toluene 0200 ND 0 199 600-140 995 25 0 l 52 <br /> Ethylbenzene 0200 ND 0209 600-140 105 25 0 192 <br /> Xylenes(total) 0 600 ND 0 538 600-140 897 25 0 101 <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 /> 0 <br /> Sequoia Analytical-Sacramento *Refer to end of report for text of notes and definitions <br /> Page 5 of 6 <br />