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I ]nduwial Road <br /> �-.!.a Sequoia SsnC(650 2194000 <br /> `�#r� fb50)2�2 9600 <br /> PAa1 - <br /> � Analytical aNwequmalab�co <br /> m <br /> ier-Ryan/Geostralegtes(1? Project To�co(1) <br /> Sierra Court Suite J Project Number Tosco#5886 Stockton Reported <br /> 'Llihn CA 94568 Project Manager Deanna Harding 05/20/02 12 25 <br /> Volatile Organic 8 Oa�r�enated Compounds by EPA T19ethod 8260B - Quality Control <br /> Sequoia Analvtical - San Carlos <br /> Repontng Spike Source %REC RPD <br /> Analyte Result Limit Univ level Result °/aREC Limns RPD Limit Noie.- <br /> Batch 2050013 - EPA 5030B JP/Tl I <br /> Blank (2050013-BLK2) Prepared,& Analyzed 05/08/02 <br /> Eihanol ND 500 ug!] <br /> 1 2-Dibromoeihane ND 2 0 <br /> 1 2-Dichloroethane ND 2 0 <br /> Di 150prop\1 ether ND 20 <br /> Eih,]ten-butyl ether ND 2 0 <br /> Nleth�1 ten-bunt ether ND 2 0 <br /> Ten amyl methyl ether ND 20 <br /> Ten buivl alcohol ND 100 <br /> Surrogate 12 Dichloroerhane 0`4 51 1 500 104 70 130 <br /> Sunogare Toluene-d8 50 0 500 100 70 110 <br /> LCS(2050013-BSi) Prepared& Analyzed 05/07/02 <br /> Methvl ten-butvl Ober 44 7 2 0 ug/l S0 0 88 6 70-110 <br /> re 12-Drchloroerhane-d4 io 6 500 101 70 131) <br /> SWIre Toluene d8 50 1 500 100 70 110 <br /> LCS(2050013-BS2) Prepared& Analyzed 05/08/02 <br /> Methvl ten-buivl ether 44 3 2 0 ug/1 500 886 70-1 i0 <br /> Surrogate 11 Drchloroerhane-d4 510 500 101 70-130 <br /> Surrogate Toluene-d8 51 6 500 103 70 130 <br /> Matrix Spike(2050013-MSI) Source L205012-06 Prepared& Analyzed 05/07/02 <br /> Methyl tert-butvi ether 44 1 2 0 ugrl 500 ND 84 6 60-140 <br /> Sur i ogare 1 1-Dichlor oerhane-d4 488 500 976 70 110 <br /> Surrogate Toluene-d8 496 500 991 70-130 <br /> Matrix Spike Du (2050013-MSDI) Source L205012-06 Prepared& Analyzed 05/07/02 <br /> Methvi teri-bury]ether 43 5 20 ug/l 500 ND 834 60-140 1 37 25 <br /> Surrogate 12 Drchloroerhane-d4 469 500 93 8 70-130 <br /> Sunogare Toluene d8 503 500 101 70 130 <br /> is Analytical - San Carlos The results in this report apply ro the samples anahzed in accordance wirh rhe chain of <br /> cusrodi document This analytical report must be reproduced in its entirety <br /> Page 22 of 23 <br />