Laserfiche WebLink
1455 McDowell Blvd,North Ste D <br /> Sequoia Petaluma,CA 94954 <br /> a— ) (707) <br /> Analytical FAX 792-1665 <br /> (707)792-0342 <br /> www sequoialabs tom <br /> URS Corp-Sacramento Project Arco Site 6020,Manteca,CA P502227 <br /> 2870 Gateway Oaks Drive Suite 300 Project Number Intrim-50681 Reported <br /> Sacramento CA,95833 Project Manager Vernon P Elarth 02/26/05 14 14 <br /> Volatile Organic Compounds by EPA Method 8260B - Quality Control <br /> Sequoia Analytical -Petaluma <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit limits Level Result %REC Limits RPD limit Notes <br /> Batch 5020309-EPA 5030B waters/EPA 8260B <br /> Matrix Spike(5020309-MSI) Source P502216-01 Prepared&Analyzed 02/24/05 <br /> Tert-amyl methyl ether 5 90 10 ugfl 500 ND 118 78-117 LM <br /> Benzene 5 83 050 500 ND 117 81-118 <br /> Tert-butyl alcohol 976 20 100 26 72 60-147 <br /> Di-isopropyl ether 725 10 Soo ND 145 70-125 LM <br /> 1,2-Dibromoethane(EDB) 5 31 050 Soo ND 106 85-125 <br /> 1 2-Dichloroethane 670 050 500 ND 134 77-126 LM <br /> Ethanol 195 100 100 ND 195 55-200 <br /> Ethylbenzene 527 050 500 ND 105 89-122 <br /> Ethyl tert-butyl ether 666 10 500 ND 133 71-120 LM <br /> Methyl tent butyl ether 721 050 500 047 135 70-122 LM <br /> Toluene 563 050 500 ND 113 84-119 <br /> Xylenes(total) 159 050 150 ND 106 86-132 <br /> Surrogate Dibromofluoromethane 619 /I 500 114 84-111 LH <br /> Surrogate 1 2-Dichloroethane d4 685 500 137 74-135 LH <br /> Surrogate Toluene-d8 543 500 109 84-119 <br /> Surrogate 4-Bromofluorobenzene 559 500 112 86-119 <br /> Matrix Spike Dup(5020309-MSDI) Source P502216-01 Prepared&Analyzed 02/24/05 <br /> Tort-amyl methyl ether 439 10 ugA 500 ND 88 78-117 29 20 BA <br /> Benzene 547 050 500 ND 109 81-118 6 20 <br /> Ter(-butyl alcohol 114 20 100 26 88 60-147 16 20 <br /> Di-isopropyl ether 581 10 500 ND 116 70-125 22 20 BA <br /> 12-Dibromoethane(EDB) 447 050 500 ND 89 85-125 17 20 <br /> 1 2-Dichloroethane 526 050 500 ND 105 77-126 24 20 BA <br /> Ethanol 350 100 100 ND 350 55-200 57 20 BA,LM <br /> Ethylbenzene 549 050 500 ND 110 89-122 4 20 <br /> Ethyl tert-butyl ether 520 10 500 ND 104 71-120 25 20 BA <br /> Methyl tert-butyl ether 523 050 500 047 95 70-122 32 20 BA <br /> Toluene 547 050 500 ND 109 84-119 3 20 <br /> Xylenes(total) 164 050 150 ND 109 86-132 3 20 <br /> Surrogate Dibromofluoromethane 551 500 110 84-121 <br /> Surrogate 1,2-Drchloroethane-d4 562 500 112 74-135 <br /> Surrogate Toluene-d8 545 500 109 84-119 <br /> Surrogate 4-Bromofluorobenzene 566 500 11.3 86-119 <br /> Sequoia Analytical-Petaluma The results to 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 15 of 18 <br />