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$85 Jarvis Drive <br /> •� Sequoia Morgan Hill CA 95037 <br /> ✓ • <br /> (408)776 960 <br /> Analytical FAX(408)782 63088 <br /> www sequoralabs corn <br /> 1Stratus Environmental Inc Protect ARCO#6100 MNB0610 <br /> 3330 Cameron Park Dr,Suite 550 Protect Number NIP Reported <br /> Cameron Park CA,95682 Project Manager Jay Johnson 03/23/04 18 50 <br /> Volatile Organic Compounds by EPA Method 8260B - Quality Control <br /> Sequoia Analytical- Petaluma <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limn Units Level Result %REC Limits RPD Limit Notes <br /> Batch 4020581-EPA 5030 soils <br /> Blank(4020581-BLKI) _ Prepared&Analyzed 02/26/04 <br /> Tert-amyl methyl ether ND 00010 mg/kg <br /> Benzene ND 00010 " <br /> Tert-butyl alcohol ND 0 020 " <br /> Di-isopropyl ether ND 00010 " <br /> 1 2-Dtbromoethane(EDB) ND 00010 " <br /> 1 2-Dichloroethane ND 00020 " <br /> Ethanol ND 010 " <br /> Ethylbenzene ND 00010 " <br /> Ethyl tert-butyl ether ND 0 0010 " <br /> Methyl tert-butyl ether ND 00010 " <br /> Toluene ND 00020 " <br /> Xylenes(total) ND 0 0020 " <br /> agate Dibromofluoromethane 00426 00380 112 81-126 <br /> Surrogate 1 2-Dichloroethane-d4 00414 00380 109 73-131 <br /> Surrogate Toluene-d8 0 0370 00380 97 82-129 <br /> Laboratory Control Sample(4020581-BSI) Prepared&Analyzed 02/26/04 <br /> Tert-amyl methyl ether 0 0563 00050 mg/kg 00500 113 74-126 <br /> Benzene 0 0580 00050 0 0500 116 75-123 <br /> Tert-butyl alcohol 0 899 0 10 1 00 90 66-129 <br /> Di-isopropyl ether 0 0656 00050 0 0500 131 71-127 QC07 <br /> 1,2-Dtbromoethane(EDB) 0 0528 00050 0 0500 106 88-118 <br /> 1 2-Dichloroethane 0 0544 00050 0 0500 109 79-119 <br /> Ethanol 0 717 020 1 00 72 70-140 <br /> Ethylbenzene 00575 00050 0 0500 115 65-135 <br /> Ethyl tert-butyl ether 0 0572 00050 0 0500 114 72-123 <br /> Methyl Cert-butyl ether 0 0599 0 0050 0 0500 120 70-125 <br /> Toluene 0 0483 00050 0 0500 97 76-123 <br /> Surrogate Dibromofluoromethane 00426 00380 112 81-126 <br /> Surrogate 1,2-Dichloroethane-d4 00406 00380 107 73-131 <br /> Surrogate Toluene-d8 00383 00380 101 82-129 <br /> oia Analytical-Morgan Hill The results in this report apply to the samples analyzed in accordance with the chain <br /> of custody document Unless otherwise stated results are reported on a wet weight <br /> basis This analytical report must be reproduced in Its entirety <br /> Page 12 of 16 <br />