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819 Striker Avenue Suite 8 <br /> Sequoe qu o i a Sacramento CA 95834 <br /> ia (9 16)92]-9600 <br /> FAX(916)921-0100 <br /> Analytical www sequoialabs com <br /> Gettler-Ryan- Rancho Cordova Project Unocal 0187 Stockton,CA Sampled l 113100 to 11/6/00 <br /> 3164 Gold Camp Dr Ste 240 Project Number N/A Received 11/7100 <br /> Rancho Cordova,CA 95670 Project Manager David Herzog Reported 11/16/00 <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 /> Analvte - Analvzed Level Result Result s Units Recov Limits % Limit % Notes* <br /> LCS(continued) 0110205-BS1 <br /> Methyl tert-butyl ether 11/14/00 0200 _ 0 179 mg/kg 700-130 895 _ <br /> Surrogate a a a-Trifluorotoluene 110200 0 225 600-140 11.2 <br /> Matrix Spike 0110205-MSI 5011119-01 <br /> Benzene 11/14/00 0 200 ND 0 179 mg/kg 600-140 89 5 <br /> Toluene 0200 ND 0200 600-140 100 <br /> Ethylbenzene Y 0200 ND 0 213 600-140 106 <br /> Xylenes(total) 0 600 ND 0 551 600-140 91 8 <br /> j Methyl Cert-butyl ether 0200 ND 0 157 600-140 785 <br /> Surrogate a a a-Trifluoratoluene 0200 0 215 600-140 108 <br /> Matrix Spike Dup 0110205-MSDI S011119-01 <br /> Benzene 11/14/00 0200 ND 0 174 mg/kg 600-140 870 25 0 2 83 <br /> Toluene -- - - - " - 0200 - ND 0 193 -600-140 96 5 25 0 - 3 56 �- <br /> Ethylbenzene 0200 ND 0203 600-140 101 25 0 4 83 <br /> Xylenes(total) 0 600 ND 0 530 600-140 883 25 0 3 89 <br /> Methyl tert-butyl ether 0200 ND 0 152 600-140 760 25 0 324 <br /> Surrogate a a a-Triuorotoluene 0200 0203 600-140 101 <br /> Batch 0110214 Date Prepared 11/15/00 Extraction Method EPA 50305 McQH <br /> Blank F 0110214-BLKI --- - - - -- - - <br /> Purgeable Hydrocarbons 11/15/00 ND mg/kg too <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-Tri luorotoluene 0200 0 215 600-140 108 <br /> LCS 0110214-BSI <br /> Benzene l 1'115100 0200 0 191 mg/kg 700-130 955 <br /> Toluene 0200 0 213 700-130 106 <br /> Ethylbenzene 0200 0 226 700-130 113 <br /> Xylenes(total) 0 600 0 594 700-130 990 <br /> Methyl tert-butyl ether 0200 0 176 700-130 88 0 <br /> Surrogate a a a-Trifluorotoluene 0200 0 226 600-140 113 <br /> Matrix Spike 0110214-MSI 5011119-02 <br /> Benzene 11/15/00 0200 ND 0 135 mg/kg 600-140 675 <br /> Toluene 0200 ND 0 155 600-140 775 <br /> Ethylbenzene 0200 ND 0 169 600-140 845 <br /> Sequoia Analytical-Sacramento *Refer to end of report for text of notes and definitions <br /> Page 13 of 15 <br />