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1 1151 lndu�inal Road <br /> Sequoia San Car6lo0A 5C99070 <br /> 1 ) A 9600 <br /> FAX <br /> Analytical vu;eg0)2329612 <br /> uequoialab�carn <br /> leer-Rvan/Geostrategies(1) Protect Tosco(l) <br /> t Sierra Court Suite a Project Number Tosco#t5886 Stockton Reported <br /> ,Dublin CA 94568 Project Manager Deanna Harding 05/20/02 12 25 <br /> Total Purgeable Wvdrocarbon (C6-CJ 2) by EPA 801 SM and BTEX/MTBE by EPA 8021B - Qualih' Control <br /> Sequoia AnSIVIlical - San Carlos <br /> Reporting Spike Source %REC RPD <br /> IAnalyle Result Limn unii, Lc%el Result %REC Limit, RPD Limit Now <br /> Batch 2050032 -EPA 5030B(Prr <br /> Blank (2050032-BLK1) Prepared& Analvzed 05/15/02 <br /> Purgeable Hydrocarbons as Gasoline ND 110 ugA <br /> Benzene ND 0-SO <br /> Toluene ND 050 <br /> EONIbenzene ND 050 <br /> X,lenesooial) ND 0110 <br /> Methyl ten-butyl ether ND 50 <br /> Surrogate a a a rrtfluorotoluene 102 100 102 70 130 <br /> LCS(2050032-BSI) Prepared&.Analvzed 05/15/02 <br /> Benzene 103 0 50 up-/] 100 IM 70-130 <br /> Toluene 953 050 100 95 3 70-130 <br /> Ethylbenzene 884 050 100 884 70 130 <br /> Xylenes notal) 26 2 050 100 87; 70 130 <br /> me a a a TriJluororoluene 11 1 100 111 70 130 <br /> LCS(2050032-BS2) Prepared& Analyzed 05/15/02 <br /> Purgeable Hydrocarbons as Gasoline 265 50 ug/l 250 106 70-130 <br /> Sun ogate a a a Tri fluorotoluene 102 100 102 70 130 <br /> Matrix Spike(2050032-1NS1) Source L205012-07 Prepared& Analyzed 05115/02 <br /> Purgeable Hvdrocarbons as Gasoline 249 50 ugll 250 ND 996 60-140 <br /> Surrogate a a a Trifluorololuene 117 11100 117 70 130 <br /> Matrix Spike Du (2050032-MSD1) Source L205012-07 Prepared& Analyzed 05/15/02 <br /> geable Hvdrocarbons as Gasoline 229 50 u250 ND 91 6 60-140 <br /> Purg/1 8 37 25 <br /> Surrogate a a a Tnfluorotoluene <br /> JQ 6 100 106 70 130 <br /> to Analytical - San Carlos The results in this report applt to the samples analYed in accordance kith the chain of <br /> custodi document This onah tical report must be reproduced to its entirer), <br /> Page 18 of 23 <br />