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Drive <br /> Sequoia 8857 Hill CA 95037 CA 95037 <br /> Morgan <br /> (408)776-9600 <br /> �► Analytical FAX(408)782 6308 <br /> www sequoialabs com <br /> URS Corporation[Arcot] Protect BP Heritage#I 1194,Tracy,CA MOK0115 <br /> 2870 Gateway Oaks Dr Ste 300 Project Number G07WZ-001 1 Reported <br /> Sacramento CA,95833 Project Manager Vernon P Elarth 11/23/05 08 47 <br /> Volatile Organic Compounds by EPA Method 8260B - Quality Control <br /> Sequoia Analytical -Morgan Hill <br /> Reporting Spike Source %RFC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 5K11031 -EPA 5030B PIT/EPA 8260B <br /> Matrix Spike(5K11031-MSI) Source MOK0005-07 Prepared&Analyzed 1 111 1105 <br /> tert Amyl methyl ether 155 50 ug/l 150 1 1 I03 80-115 <br /> Benzene 586 50 51 6 10 94 65-115 <br /> tert-Butyl alcohol 1700 200 1430 110 H] 75-120 <br /> Di-isopropyl ether 153 5 0 151 ND 101 75-125 <br /> Ethanol 1600 1000 1420 ND 113 70-135 <br /> Ethyl tent-butyl ether 148 5 0 150 ND 99 75-130 <br /> Ethylbenzene 840 5 0 754 14 93 75-135 <br /> Methyl tert-butyl ether 118 50 702 42 108 65-125 <br /> Toluene 342 50 372 1 7 91 85-120 <br /> Xylenes(total) 398 50 412 ND 97 85-125 <br /> Gasoline Range Organics(C4 C12) 8630 500 4400 3300 121 60 140 <br /> rrogate 11-Dichloroethane-d4 170 150 88 60-135 <br /> atrix Spike Dup(5KI1031-MSD1) Source MOK0005-07 Prepared&Analyzed 11/11/05 <br /> tert Amy]methyl ether 158 5 0 ugll 150 1 1 105 80-115 2 15 <br /> Benzene 600 5 0 51 6 10 97 65-115 2 20 <br /> tert-Butyl alcohol 1730 200 1430 110 113 75-120 2 25 <br /> Di-isopropyl ether 155 5 0 151 ND 103 75 125 1 15 <br /> Ethanol 1370 1000 1420 ND 96 70-135 15 35 <br /> Ethyl tert butyl ether 154 50 150 ND 103 75-130 4 25 <br /> hthylbenzene 873 50 754 14 97 75-135 4 15 <br /> Methyl tert-butyl ether 126 5 0 702 42 120 65-125 7 20 <br /> Toluene 345 5 0 372 1 7 92 85-120 09 20 <br /> Xylenes(total) 417 50 412 ND 101 85-125 5 20 <br /> Gasoline Range Organics(C4 C12) 9030 500 4400 3300 130 60-140 5 25 <br /> Surrogate 1 2-Dichloroethane d4 110 150 88 60-135 <br /> Sequoia 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 10 of I 1 <br />