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Sequoia Morgan Jarvis Drive <br /> Hill,CA 95037 <br /> (408)776-9600 <br /> FAX <br /> Analytical wwsww.{cuoiquoi782-6308 <br /> ala6s.com <br /> r� <br /> IJRS Corporation(ArcolI Project: ARCO#0548,Stockton,Ca NINH0053 <br /> 2870 Gateway Oaks Dr.,Ste 300 Project Number: N/P Reported: <br /> Sacramento CA,95833 Project Manager: Vernon P.Elarth 08/06/04 16:20 <br /> Volatile Organic Compounds by EPA Method 8260B- Quality Control <br /> Sequoia Analytical-Morgan Hill <br /> Reporting Spike Source %REC RPD <br /> Analyte Result limit Units level Result %REC limits RPD limit Notes <br /> Batch 4HO5027-EPA 5030B PIT <br /> Matrix Spike Dup(4H05027-MSD1) Source: MNH0071-02 Prepared:08/05/04 Analyzed:08/06/04 <br /> Benzene 551 50 ugll 640 ND 86 78-124 2 12 <br /> Ethylbenzene 777 50 696 ND 112 84-117 6 10 <br /> Methyl tett-butyl ether 3610 50 992 2700 92 63-137 0.8 13 <br /> Toluene 3060 50 2970 ND 103 78-129 4 10 <br /> Xylenes(total) 3870 50 3370 ND 115 83-125 4 11 <br /> Gasoline Range Organics(C4-C12) 39400 5000 44000 ND 90 70-124 2 20 <br /> Surrogate:l.2-Dichloroethane-d4 2.22 2.50 89 78-129 <br /> Batch 4H06002-EPA 5030B PIT <br /> Blank(4H06002-BLK1) Prepared&Analyzed: 08/06/04 <br /> ftteft-Arnyl <br /> methyl ether ND 0.50 ugll <br /> Benzene ND 0.50 " <br /> tent-Butyl alcohol ND 20 " <br /> ' Di-isopropyl ether ND 0.50 <br /> 1,2-Dichloroethane ND 0.50 <br /> Ethanol ND 100 " <br /> Ethyl tert-butyl ether ND 0.50 " <br /> Ethylbenzene ND 0.50 <br /> Methyl tett-butyl ether ND 0.50 <br /> Toluene ND 0.50 " <br /> Xylenes(total) ND 0.50 " <br /> Gasoline Range Organics(C4-C12) ND 50 " <br /> Surrogate:l,2-Dichloroethane-d4 5.04 5.00 101 78-129 <br /> ' Laboratory Control Sample(4H06002-BSI) Prepared&Analyzed: 08/06/04 <br /> tert-Amyl methyl ether 11.3 0.50 ugll 10.0 113 82-140 <br /> Benzene 10.7 0.50 10.0 107 69-124 <br /> ' tert-Butyl alcohol 53.3 20 50.0 107 56-131 <br /> Di-isopropyl ether 11.4 0.50 10.0 114 76-130 <br /> 1,2-Dichloroethane 10.8 0.50 10.0 108 77-136 <br /> Ethanol 164 t00 200 82 31-143 <br /> Ethyl tert-butyl ether 11.7 0.50 10.0 117 81-121 <br /> Ethylbenzene 11.0 0.50 10.0 110 84-132 <br /> Methyl tert-butyl ether 11.7 0.50 10.0 117 63-137 <br /> ' Toluene I0.8 0.50 " 10.0 108 78-129 <br /> Xylenes(total) 30.6 0.50 30.0 102 83-137 <br /> equoia Analytical -Morgan Hill The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document. Unless otherwise stated, results are reported on a wet weight basis. <br /> This analytical report must be reproduced in its entirety. <br /> Page 14 of 16 <br />