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1453 McDawell Blvd,North Ste D <br /> Sequoia Peuluma,G 94954 <br /> A (707)792 1865 <br /> A <br />- - - nalytical---- ---- ----- ----- - — - - — — - - -- - — FAX(707)792,0342 --- <br /> www segwxalahs cam <br /> ' Seeor-Rancho Cordova Project Arco Site 4932,Slockton,CA P503205 <br /> 3017 Kdgare Road Suite 100 Project Number"63964 Reported <br /> Rancho Cordova CA,95670 Protect Manager Rusty Beakosky 03/30/05 12 44 <br /> Volatile Organic Compounds by EPA Method 8260B -Quality Control <br /> Sequoia Analytical-Petaluma <br /> Reporting Spike Source %REC RPD <br /> ' Analyte Result Limit Units Bevel Result %REC Lomita RPD Limit Nates <br /> Batch 5030233-EPA 5030B waters/EPA 82608 <br /> MRini Spike(5030I33-MSI) - Source P503233-07 Prepared 8t Analyzed 03/23/05 <br /> Benzene 497 OSO ug/I 504 ND 99 81-118 <br /> Ethytbenzene 513 050 Soo ND 103 89-122 <br /> Methyl ten butyl ether 532 050 500 ND 106 77-123 <br /> ' Toluene 503 050 X Soo ND 102 84-119 <br /> Xylenes(total) 151 050 150 ND 105 86-132 <br /> Surmgate Drbromafluoromethane 574 500 115 84-122 <br /> Sramgare I2-Dichloroethane44 SSS 500 111 74-135 <br /> Surrogate 7'oluene-d8 377 500 105 84-119 <br /> Mainx Spike Dup(5030233-MSD I) Source P503233-07 Prepared&Analyzed 03/23/05 <br /> Benzene 465 050 ugA 500 ND 93 $11-Da 7 20 <br /> Dhylbenzene 490 050 500 ND 96 69-122 7 20 <br /> Methyl tert-butyl ether 480 0 5o 500 ND 96 77-123 10 20 <br /> Toluene 477 050 500 ND 95 84-119 6 20 <br /> Xylenes(total) 140 050 " 150 ND 93 86-132 11 20 <br /> Surrogate Dibromglluarometharre 570 Soo 114 84-127 <br /> Surrogate 12-Drehlorverhane-d4 549 Soo Ile 74-135 <br /> Surrogate Toluene-& S28 500 106 84-119 <br /> I <br /> 1 <br /> ' Sequoia Analytical-Petaluma 77re results in this report apply to the samples analyred sir accordance with the chain of <br /> custody documcnr Unless otherwise stated,results are reported on a wet weight bm u <br /> This analylicalreport must be reproduced in Its entirety <br /> Page 19 of 20 <br />