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d <br /> San CrSequoia <br /> (650)2329600 <br /> FAX(650)232-9612 <br /> �, <br /> ,!D— Analytical � �cM <br /> 0 <br /> Gelder-RYen/Ge0strWAWes(1) Project. Tosco(5) Sampled. 6/26/00 <br /> 6747 Sierra Court,Suite 7 Project Number- Tosco(Unocal)SS#6981 Received. 6/27/00 <br /> Dublin,CA 94568 - - - Project MeMer--Deanna H = - - _ _ -Rq3orUxL=7/12/00 <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Anal Level Result Result Units Recov Limits % Limit % Notes* <br /> LCS(continued) 0070025-B�1 <br /> Ethylbenzeue 7/7100 too 103 ug/l 700-130 103 <br /> Xylenes(total) 300 312 700-130 104 <br /> Surrogate a,a,a-Tnfluorotoluene " 100 111 700-130 111 <br /> LCS 0070025-$S2_ <br /> Purgeable H drocarbons as Gasoline 7/7/00 250 251 ug/l 700-130 100 <br /> Surrogate a,a,a-Tnfluorotoluene " 100 114 700-130 114 <br /> Matrix:Spike 0070025-MSI L006236-12 <br /> Purgeable H drocarbons as Gasoline 7/7/0o 250 ND 216 u 600-140 86A <br /> Surrogate. a.a,a-Tnfluorotoluene " 100 111 700-130 111 <br /> Matrix Spike Dao 0070025-MSDI L006NJ:12 <br /> Purgeable Hydrocarbons as Gasolmc 717100 250 ND 219 u 600-140 87.6 250 138 <br /> Surrogate a,a,a-Trlfluorotoluene N 100 109 " 700-130 109 <br /> Batch 0070026 Date Pre ared: MOO Extraction Method: EPA 50308 [PM <br /> Blank 0070026-BLKI <br /> Purgeable Hydrocad)ons as Gasoline 7/7/00 ND ug/l 50.0 <br /> Benzene ND 0.500 <br /> Toluene ND 0.500 <br /> Ethylbenzene ^ ND " 0.500 <br /> Xylenes(total) ^ ND " O-SM <br /> Meth tett butyl ether ND 5.00 <br /> Surrogate a,a,a-Tnfluorotoluene 100 116 700-130 116 <br /> LCS 0070026-Bsx <br /> Benzene 7n/0o 100 123 49/1 700-130 123 <br /> Toluene 100 114 " 700-130 114 <br /> Ethylbenzeae 100 117 700-130 117 <br /> Xylenes(total) 300 350 700-130 117 <br /> Surrogate %a,a-Tri luorotoluene 100 108 700-130 108 <br /> LLS 0070026-BS2 <br /> Pugpable Hydrocmtxms as Gasoline 717100 250 244 ugA 700-130 976 <br /> Surrogate a,a,a-Trifluorotoluene " 100 112 700-130 112 <br /> Matrix Suike 0070026-MS1 h006236-19 <br /> Putgeable H drocarbons as Gasohne 7n/00 250 ND 235 ugA 60 0-140 94.0 <br /> Surrogate a,a,a-Trifluorotoluene " 100 111 or 700-130 111 <br /> Sequoia Analytical-San Carlos *Refer to end of report for tett of notes and defintoons <br /> Page 23 of 30 <br />