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885 Jarvis Drive <br /> Sequoia Morgan Hill CA 95037 <br /> (408)776-9600 <br /> Analytical FAX(408)782-6308 <br /> 0 www sequoialabs cam <br /> URS Corporation[Arcol] Project BP Heritage#11191,Stockton,CA MOJ1397 <br /> 2870 Gateway Oaks Dr,Ste 300 Project Number G07WW-0016 Reported <br /> Sacramento CA,95833 Project Manager Vernon P Elarth 11110105 12 50 <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 5KO4010-EPA 5030B PIT/EPA 8260B <br /> Matnx Spike(5K04010-MSI) Source-MOJ1316-01 Prepared&Analyzed 11/04/05 <br /> Toluene 805 10 ug/l 744 ND 108 85-120 <br /> Xylenes(total) 766 10 824 ND 93 85-125 <br /> Gasoline Range Organics(C4-C12) 11100 1000 8800 48 126 60-140 <br /> Surrogate 1 2-Dichloroethane-d4 442 500 88 60-135 <br /> Matnx Spike Dup(5K04010-MSD]) Source MOJ1316-01 Prepared&Analyzed 11/04/05 <br /> tert-Amyl methyl ether 309 10 ugll 301 ND 103 80-115 5 15 <br /> Benzene 101 10 103 1 5 97 65-115 1 20 <br /> tert-Butyl alcohol 3580 400 2860 ND 125 75-120 8 25 LM <br /> Di-isopropyl ether 297 10 302 042 98 75-125 1 15 <br /> Ethanol 3140 2000 2830 ND 111 70-135 4 35 <br /> Ethyl ler(-butyl ether 308 10 301 ND 102 75-130 03 25 <br /> methylbenzene 144 10 151 054 95 75-135 4 15 <br /> ethyl tent-bury]ether 802 10 140 36 547 65-125 02 20 LM <br /> Toluene 808 10 744 ND 109 85-120 04 20 <br /> Xylenes(total) 761 10 824 ND 92 85-125 07 20 <br /> Gasoline Range Organics(C4-C 12) 11100 1000 8800 48 126 60 140 0 25 <br /> Surrogate 12-Dtchloroethane-d4 438 300 88 60-135 <br /> Batch 5KO7004-EPA 50308 PIT/EPA 8260B <br /> Blank(5K07004-BLK1) Prepared&Analyzed 11/07/05 <br /> tert-Amyl methyl ether ND 050 ugll <br /> Benzene ND 050 " <br /> tert-Butyl alcohol ND 5 0 " <br /> Di-isopropyl ether ND 050 " <br /> Ethanol ND 100 1C <br /> Ethyl tert-butyl ether ND 050 " <br /> Ethylbenzene ND 050 " <br /> Methyl tert butyl ether ND 050 " <br /> Toluene ND 050 " <br /> Xylenes(total) ND 050 <br /> Gasoline Range Organics(C4-C12) ND 50 " <br /> i <br /> Surrogate 11-Dtchloroethane-d4 133 2 50 93 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 8 of]1 <br />