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Y7 ) <br /> 885 Jarvis Dnr$ <br /> 4D Sequoia Morgan Hill,CA 95037 <br /> (408)766-%W <br /> Analytical FAX(408)762-6308 <br /> www sequoialabscom <br /> Secor-Rancho Cordova(ARCO) Project ARCO#4932, Stockton,CA MMH0356 <br /> 3017 Kilgore Rd Suite 100 Project Number 38984 Reported <br /> Rancho Cordova CA,95670 Project Manager Clint Harms 08/12/03 16 36 <br /> Total Purgeable Hydrocarbons (C6-C10) and Volatile Organic Compounds by EPA method 8260B- Quality <br /> Sequoia Analytical- Morgan Hill <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 3HO8035-EPA 5035 <br /> Blank(3HO8035-BLK1) Prepared&Analyzed 08/08/03 <br /> Benzene ND 050 ug/kg <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Gasoline Range Organics(C6-C10) ND 100 " <br /> Surrogate 12-Dichloroelhane-d4 5 74 500 115 60-140 <br /> Laboratory Control Sample(3H08035-BSI) Prepared&Analyzed 08/08/03 _ <br /> Benzene 123 050 uglkg 100 123 70-130 <br /> Toluene 12 4 0 50 10 0 124 70-130 <br /> Surrogate 12-Drehloroethane-d4 541 500 108 60-140 <br /> Aiiffiij.ahor Control Sample(3HO8035-BS2) Prepared&Analyzed 08/08/03 <br /> enzene <br /> 603 050 ug/kg 640 942 70-130 <br /> Toluene 35 4 050 29 7 119 70 130 <br /> Gasoline Range Organics(C6-C10) 333 100 440 757 60-140 <br /> I <br /> Surrogate 12-Dichloroethane-d4 547 500 109 60-140 <br /> Matrix Spike(3H08035-MS1) Source MMHO356-01 Prepared&Analyzed 08/08/03 <br /> Benzene 213 1 8 ug/kg 22 8 Nil 934 60-140 <br /> Toluene 120 1 8 106 ND 113 60-140 <br /> Gasoline Range Organics(C6-C10) 1170 360 1570 50 713 60-140 <br /> Surrogate 1 2-Dichloroethane-d4 588 500 118 60-140 <br /> Matrix Spike Dup(3HO8035-MSD1) Source MMH0356-01 Prepared&Analyzed 08/08/03 _ <br /> Benzene 213 1 8 ug/kg 224 ND 95 1 60-140 000 25 <br /> Toluene 127 18 104 ND 122 60-140 567 25 <br /> Gasoline Range Organics(C6-CIO) 1280 350 1540 50 79 9 60-140 998 25 <br /> Surrogate 12-Dichloroethane-d4 548 500 110 60-140 <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 werght basis <br /> This analytical report must be reproduced in its entirety <br /> 5 of 7 <br />