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Sequoia 819 Striker Avenue Suite 8 <br /> 4DSacramento CA 95834 <br /> (916)921-9600 <br /> Analytical FAX(916)921-01()0 <br /> SECOR International Project Arco 4932,Stockton,CA Sampled 6/9/99 <br /> 9912 Business Park Drive,Ste 100 Protect Number NIA Received 6/10199 <br /> Sacramento,CA 95827 Project Manager Rusty Benkosky Reported 6/11, 14, 17/99 <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 /> Analyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Batch, 9060190 Date Prepared. 6110/99 Extraction Method, EPA 5030E(McOH) <br /> Blank 9060190-BLK 1 <br /> Purgeable Hydrocarbons 6/10/99 ND mg/kg 1 00 <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 s a-Trrfluorotoluene 0200 0 187 600-140 935 <br /> LSA 9060190-BS 1 <br /> Benzene 6/10199 0200 0 212 mglkg 700-130 106 <br /> Toluene 0200 0 228 700-130 114 <br /> Ethylbenzene 0200 0 229 700-130 114 <br /> Xylenes(total) 0 600 0611 70 0-130 102 <br /> Methyl tert-butyl ether 0200 0207 700-130 103 <br /> Surrogate aaa-Trifluorotoluene 0200 0 193 600-140 965 <br /> Matrix Spike 9060190-MS1 5906024-06 <br /> Benzene 6/10/99 0200 ND 0 193 mg/kg 600-140 965 <br /> Toluene 0200 ND 0206 600-140 103 <br /> Ethylbenzene 0200 ND 0206 600-140 103 <br /> Xylenes(total) 0 600 ND 0 555 600-140 925 <br /> Methyl tert-butyl ether 0200 ND 0 196 600-140 98 0 <br /> Surrogate a a,a-Tnfluorotoluene 0 200 0184 600-140 92 0 <br /> Matrix Spike Duo 9060190-MSDI S906024-06 <br /> Benzene 6110/99 0200 ND 0 194 mg/kg 600-140 970 250 0 517 <br /> Toluene 0200 ND 0207 600-140 103 250 0 <br /> Ethylbenzene 0200 ND 0207 600-140 103 250 0 <br /> Xylenes(total) 0 600 ND 0 559 600-140 93 2 25 0 0 754 <br /> Methyl tert-butyl ether 0200 ND 0204 600-140 102 250 400 <br /> Surrogate a a a-Trifluorotoluene 0200 0 184 600-140 92 0 <br /> Batch. 90fi0192Date Prepared. 6/11/99 ExtractioU Method. EPA 503U(MeOU) <br /> Blank _ 2060192-BLKI <br /> Purgeable Hydrocarbons 6/11199 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 /> Sequoia Analytical-Sacramento *Refer to end of report for text of notes and definrrtons <br /> Page 8 of 14 <br /> t� <br />