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Drive <br /> Sequoia , 8857arvss 5037 <br /> 1:1) 1 <br /> MorganHdl CA 95437A (408)776 9600 <br /> AnalyticalFAX(408)782 6308 <br /> www sequoialabs com. <br /> r I' <br /> Secor-Rancho Cordova(ARCO) Project ARCO#0595,Stockton, CA MNA0270 <br /> 3017 Kilgore Rd Suite'100- - Project Number 39983 - Reported - <br /> Rent,ho Curdoua CA,95670 Project Manager Rusty Senkosky «i 01/26/04 14 13 <br /> - - - — -Volatile Organic Compounds by-EPA-Method 8260B- Quality-Control -- <br /> I - <br /> Sequoia Analytical- Morgan HZ_il <br /> Reporting Spike Source 7 %REC RPD <br /> Analyte Result Limit Units , Level i Result_ %REC „Ljrmts RPD' '-Limit Notes <br /> i 3 <br /> Batch 4A21003-EPA 5030B P/T <br /> Laboratory Control Sample(4A21003-BS2)_ Prepared&Analyzed 01/21/04 <br /> Methyl tent-butyl ether 902 0 50 ugll 9 92 90 9 63-137 <br /> Benzene 5 45 050 640 85 2 69-124 <br /> Toluene 32 9 050 + " 29 7 111 78 129 <br /> Ethylbenzene 8 02 0 50 6 96 115 84-132 <br /> Xyienes(total) 396 0 50 33 7 118 83-137 <br /> Gasoline Range Organics 409 50 440 93 0 70-113 <br /> Surrogate 1 2-Dichloroethane-d4 5 39 5 00 108 78-129 <br /> 5 <br /> `-Laboratory Control Sample Dup(4A21003-BSD1)-=---------- -Prepared&Analyzed 01/21/04- _i-- --- -- ._ <br /> Ethanol 170 100 ugA 200 85 0 31-143 2 99 20 <br /> tert-Butyl alcohol 54 3 20 500 109 56-131 0 551 20 <br /> Methyl tert-butyl ether- K l I1 0" 050 too- ";R_ 110- 63_137 0905 20 <br /> Di-isopropyl ether It 7 050 100 + 117 76-130 1 72 20 <br /> Ethyl tort-butyl ether 11 6 0 50 10 0 116 81 121 1 71 20 <br /> tert-Amyl methyl ether 11 1 0 50 100 111 82-140 3 67 20 <br /> 1,2-Dichloroethane 11 7 0 50 10 0 117 77-136 1 72 20 <br /> 1,2-Dibromoethane(EDB) 11 8 0 50 100 118 77 132 4 15 20 <br /> - Benzene __ - _ _ ---�=i0 9 <br />