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4 <br /> 1885 Jarvis Drive <br /> ill,CA 95037 <br /> Sequoia Morgan(408)776-9600 <br /> Analytical FAX equo labs co 8 <br /> www sequoealabs com <br /> 0 <br /> URS Corporation[Arcot} Project BP Heritage#11194,Tracy,CA MOH0245 <br /> 2870 Gateway Oaks Dr,Ste 300 Project Number G07WZ-0011 Reported <br /> Sacramento CA,95833 Protect Manager Vernon P Elarth 08/19/05 06 53 <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 %RFC Limits RPD Limit Notes <br /> Batch 5HO9039-EPA 5030B PIT 1 EPA 8260B <br /> Laboratory Control Sample Dup(5H09039-ESDI) Prepared&Analyzed 08/09/05 <br /> tert-Amyl methyl ether 113 050 ug/l 100 113 80-115 0 15 <br /> Benzene 10 7 050 100 107 65-115 3 20 <br /> tent-Butyl alcohol 497 20 500 99 75-150 2 25 <br /> Di-isopropyl ether 855 050 100 86 75-125 31 15 RB <br /> Ethanol 210 100 200 105 70-135 11 35 <br /> Ethyl cert-butyl ether 105 0 50 100 105 75-130 2 25 <br /> Ethylbenzene 11 5 0 50 100 115 75-135 5 15 <br /> Metbyl tert-butyl ether 110 050 100 110 65-125 3 20 <br /> Toluene 106 050 100 106 85-120 3 20 <br /> Xylenes(total) 356 050 300 119 85-125 4 20 <br /> Surrogate 12-Dichloroethane-d4 164 150 106 60-135 <br /> atrix Spike(5H09039-MSI) Source MOH0245-01 Prepared&Analyzed 08/09/05 <br /> enzene <br /> 549 050 ug/1 608 ND 90 65-115 <br /> Ethylbenzene 866 050 7 84 ND 110 75-]35 <br /> Methyl tert butyl ether 9 47 050 9 60 ND 99 65-125 <br /> Toluene 334 050 329 ND 102 85-120 <br /> Xylenes(total) 42 5 050 385 ND 110 85-125 <br /> Gasoline Range Organics(C4-C12) 367 50 440 ND 83 70-124 <br /> Surrogate 1 2-Dichloroethane-d4 257 250 103 60-135 <br /> Matrix Spike Dup(5H09039-MSD1) Source MOH0245-01 Prepared&Analyzed 08/09/05 <br /> Benzene 5 59 050 ug/1 608 ND 92 65-115 2 20 <br /> Ethylbenzene 881 0 50 784 ND 112 75-135 2 15 <br /> Methyl tert-butyl ether 959 0 50 960 ND 100 65-125 1 20 <br /> Toluene 338 050 329 ND 103 85-120 1 20 <br /> Xylenes(total) 43 4 050 385 ND 113 85-125 2 20 <br /> Gasoline Range Organics(C4-C12) 371 50 440 ND 84 70-124 1 20 <br /> Surrogate 11-Dtchloroethane-d4 151 150 100 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 to its entirety <br /> Page 1 1 of 16 <br />