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a Sequoia 885JarvoDnve <br /> Morgan Hill CA 95037 <br /> �/ Analytical (408)7769600 <br /> FAX(408) l abs c 08 <br /> �atabe c <br /> www cequoam <br /> Sector-Rancho Cordova(ARCO) Protect ARCO#4932,Stockton,CA MN70793 <br /> 3017 Kilgore Rd Suite 100 Protect Number 63964 <br /> Rancho Cordova CA,95670 Reported <br /> Protect Manager Rusty Benkosky 11/12/04 12 23 <br /> Purgeable Hydrocarbons and Volatile Organic Compounds by EPA method 8260B - Quality Control <br /> Sequoia Analytical- Morgan Hill <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Lunn Units Lovel Result %REC Limits RPD Limit Notes <br /> Batch 4K10006-EPA 5030B PIT 1 EPA 8260E <br /> Blank(4K10006-BLKI) Prepared&Analyzed 11/10/04 <br /> Methyl cert-butyl ether ND 050 ug/I <br /> Gasoline Range Organics(C4 C 12) ND 50 ^ <br /> Benzene ND 050 " <br /> Toluene ND 050 ^ <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Surrogate 12 Dlchloroelhane-d4 471 300 94 78 119 <br /> Laboratory Control Sample(4K 100 06-BS 1) Prepared&Analyzed 11/10/04 <br /> Methyl tent-butyl ether 102 050 ug/l 100 102 63 137 <br /> Benzene 959 050 too 96 69-124 <br /> loToluene 983 050 t 0 0 98 78 129 <br /> thyllmvene 104 050 " 100 104 84-132 <br /> ylenes(total) 308 050 " 300 103 83 137 <br /> Surrogate 1 1-Dichloroethane-d4 500 500 100 78-119 <br /> Laborato Control Sample(4K10006-BS2) Prepared&Analyzed 11/10/04 <br /> Methyl tart-butyl ether 908 050 ugA 992 92 63-137 <br /> (iasoltae Range Organics(C4-C12) 373 50 " 440 85 70-124 <br /> Benzene 515 050 640 80 69-124 <br /> Toluene 316 050 31 9 99 78-129 <br /> Ethyibanzene 802 050 752 107 84-132 <br /> Xylenes(total) 388 050 366 106 83-137 <br /> Surrogate 1 1-Dichloroethane-d4 499 500 100 78-119 <br /> [Aborstary Control Sample Du (4K10006-BSDI) Prepared&Ana[ 11/10/04 <br /> Methyl tent-butyl ether 982 050 ugli 100 98 63-137 4 20 <br /> Benzene 9 03 050 too 90 69-124 6 20 <br /> Toluene 9 23 050 100 92 78-129 6 20 <br /> Ethylbenzene 998 050 too 100 84-132 4 20 <br /> Xylenes(total) 298 050 300 99 83-137 3 20 <br /> Surrogate 12-Dichloroelhane-d4 516 -500 103 78-129 <br /> Sequoia Analytical-Morgan Hill The results to this report apply 10 the sam les analyzed Jyzed 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 lis entirety <br /> Page 13 of 22 <br />