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a— ) 8l A 950 Dr <br /> Sequoia Morgait1141 CA 95037 <br /> IW Analytical Laos)776 6308 <br /> FAX(408)782 6308 <br /> wLIti tiv sequoialabs con <br /> 'Recor-Rancho Cordova Project ARCO 92133,Rancho Cordova,CA MMC0823 <br /> 3017 Kilgore Rd Suite 100 Project Number ARCO#2133, Rancho Cordova CA Reported <br /> Rancho Cordova CA,95670 Project Manager Rusty Benkosky 04/04/03 12 00 <br /> Total Petroleum Hydrocarbons as Gasoline and BTEX by EPA 8015B/8021B - Quality Control <br /> Sequoia Analytical- Petaluma <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 3030677-EPA 5030,waters <br /> Matrix She Dup(3030677-MSD1) Source MMC0823-01 Prepared&Analyzed 03/31/03 <br /> Gasoline Range Organics 2450 50 ug/1 2750 ND 89 65-135 3 20 ^ <br /> Benzene 41 2 0 50 36 5 ND 113 65-135 3 20 <br /> Toluene 204 050 203 ND 100 65-135 2 20 <br /> Ethylbenzene 480 050 47 0 ND 102 65-135 3 20 <br /> Xylenes(total) 224 0 50 236 ND 95 65-135 3 20 <br /> Methyl tert-butyl ether 68 3 2 5 560 ND 122 65-135 3 20 <br /> Surrogate a a a-Tris luorotoluene 331 300 110 65-135 <br /> Surrogate 4-Bromofluorobenzene 271 300 90 65-135 <br /> Batch 3030678-EPA 5030 waters <br /> ink 3030678-BLK1Prepared&Anal zed 03/31/03 <br /> "ohne Range Organics ND 50 U94 <br /> Benzene ND 0 50 " <br /> Toluene ND 0 50 " <br /> Ethylbenzene ND 0 50 " <br /> Xylenes(total) ND 050 " <br /> Methyl tert-butyl ether ND 2 5 " <br /> Surrogate a,a,a-Trifluorotoluene 301 " 300 100 65-135 <br /> Surrogate 4-Bromofluorobenzene 303 300 101 65-135 <br /> Laboratory Control Sample(3030678-BSI) __ _ _ Prepared&Analyzed 03/31103___ <br /> Gasohne Range Orgames 2430 50 119/1 2750 88 65-135 <br /> Benzene 407 0 50 36 5 112 65-135 <br /> Toluene 215 0 50 " 203 106 65-135 <br /> Ethylbenzene 44 1 050 47 0 94 65-135 <br /> Xylenes(total) 231 0 50 236 98 65-I35 <br /> Methyl tert-butyl ether 60 8 2 5 560 109 65-135 <br /> Surrogate a a a-Trifluorololuene 328 300 109 65-135 <br /> Surrogate 4-Bromofluorobenzene 318 300 106 65-135 <br /> quota Analytical-Morgan Hill The results in this report apply to the samples analyzed in accordance with the chain <br /> of custody document Unless otherwise stated results are reported on a wet weight <br /> basis This anal)tical report must be reproduced in its entirety <br /> 11 of 13 <br />