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Drive <br /> 885 Sequoia Morgan Hill 8CA 95037 <br /> (40776-9600 <br /> lqcp FAX Analytical www squoiblass cam <br /> • <br /> URS Corporation[Arco l] Project BP Heritage#11194,Tracy,CA MOK0115 <br /> 2870 Gateway Oaks Dr,Ste 300 Project Number G07WZ-001 I 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 %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 5K10030-EPA 5030B PIT/EPA 8260B <br /> Matrix Spike(5KI0030-MSI) Source MOK0005-05 Prepared 11/10/05 Analyzed 11/11/05 <br /> Toluene 3660 50 ugll 3720 98 96 85-120 <br /> Xylenes(total) 3840 50 4120 140 90 85-125 <br /> Gasoline Range Organics(C4-C12) 64100 5000 44000 14000 114 60-140 <br /> Surrogate 1 2 Dichloroethane d4 223 250 89 60-135 <br /> Matrix Spike Dup(5K10030-MSDI) Source MOK0005-05 Prepared 11/10/05 Analyzed 11/11/05 <br /> tert-Amyl methyl ether 1780 50 ug/l 1500 10 118 80-115 0 15 HL <br /> Benzene 6210 50 516 6000 41 65-115 3 20 BB,LN <br /> tert-Butyl alcohol 13400 2000 14300 ND 94 75-120 5 25 <br /> Di-isopropyl ether 1540 50 1510 20 101 75-125 3 15 <br /> Ethanol 35300 10000 14200 1300 239 70-135 5 35 FIL <br /> Ethyl tert-butyl ether 1700 50 1500 17 112 75-130 2 25 <br /> hylbeFtzene 1480 50 11 754 860 82 75-135 5 15 <br /> ethyl tert-butyl ether 828 50 702 19 115 65-125 0 4 20 <br /> Toluene 3550 50 3720 98 93 85-120 3 20 <br /> Xylenes(total) 3690 50 4120 140 86 85-125 4 20 <br /> Gasoline Range Organics(C4 C12) 61100 5000 44000 14000 107 60-140 5 25 <br /> Surrogate 12 Dichloroethane-d4 227 250 91 60-135 <br /> Batch 5K11024-EPA 5030B PIT/EPA 8260B <br /> Blank(5K11024-BLKI) Prepared&Analyzed 11/11/05 <br /> tert-Amyl methyl ether ND 050 ug/I <br /> Benzene ND 050 " <br /> tert-Butyl alcohol ND 5 0 " <br /> Di-isopropyl ether ND 050 <br /> Ethanol ND 100 IC <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-Cl2) ND 50 " <br /> Surrogate 1 2 Dichloroethane-d4 219 2.50 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 entirely <br /> Page 7 of 11 <br />