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• 885 Jarvis Drive <br /> quoia Morgan Hill CA 95037 <br /> (408)776-9600 <br /> alytical FAX(408)782 6308 <br /> i <br /> www sequoialabs corn <br /> F,,,[ArcotI Project BP Heritage#1I191,Stockton,CA MOE0611 <br /> c.,' v�Jateway Oaks Dr,Ste 300 Project Number G07WW-0016 Reported <br /> Sacramento CA,95833 Project Manager Vernon P Elarth 05/31/05 18 39 <br /> Volatile Organic Compounds by EPA Method 8260E- Quality Control <br /> Sequoia Analytical -Morgan Hill <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Lieut Units Level Result %REC Lunits RPD Limit Notes <br /> Batch 5E23025-EPA 5030B PIT 1 EPA 8260B <br /> _Laboratory Control Sample Dup(SE23025-BSDI) Prepared 05/23/05 Analyzed 05/24/05 <br /> Cert-Amyl methyl ether 109 050 ug/l 100 109 80-115 09 15 <br /> Benzene 9 38 050 100 94 65-115 1 20 <br /> ten-Butyl alcohol 517 20 500 103 75-150 02 25 <br /> Di-isopropyl ether 109 050 100 109 75-125 09 15 <br /> Ethanol 208 100 200 104 70-135 13 35 <br /> Ethyl tett-butyl ether 106 050 100 106 75-130 09 25 <br /> Ethylbenzene ]Go 050 100 100 75-135 2 15 <br /> Methyl tent butyl ether 100 050 100 100 65-125 4 20 <br /> Toluene 997 050 100 100 85-120 06 20 <br /> Xylenes(total) 307 050 300 102 85-125 2 20 <br /> Surrogate 1 2-Dichloroelhane-d4 125 250 90 60-135 <br /> •Matnx Spike(5E23025-MSI) Source MOE0611-03 Prepared 05/23/05 Analyzed 05/24/05 <br /> Benzene 268 25 ug/l 304 ND 88 65 115 <br /> Ethylbenzene 386 25 392 ND 98 75-135 <br /> Methyl tert-bury]ether 2270 25 480 2000 56 65-125 BB,LN <br /> Toluene 1560 25 1640 ND 95 85 120 <br /> Xylenes(total) 1890 25 1920 ND 98 85-125 <br /> Gasoline Range Organics(C4 C12) 23400 2500 22000 1700 99 70-124 <br /> Surrogate 1 2-Dichloroethane-d4 230 250 92 60-135 <br /> Matrix Spike Dup(5E23025-MSDI) Source MOE0611-03 Prepared 05/23/05 Analyzed 05/24/05 <br /> Benzene 275 25 ugtl 304 ND 90 65-115 3 20 <br /> Ethylbenzene 410 25 392 ND 105 75-135 6 15 <br /> Methyl tert-bury]ether 2380 25 480 2000 79 65-125 5 20 <br /> Toluene 1610 25 1640 ND 98 85-120 3 20 <br /> Xylenes(total) 1980 25 1920 ND 103 85-125 5 20 <br /> Gasoline Range Organics(C4 C12) 24400 2500 22000 1700 103 70-124 4 20 <br /> Surrogate 12-Dichloroethane-d4 136 250 94 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 9 <br />