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885CA Dme <br /> Sequoia Morganl401,8) 79596600 <br /> + Analytical FAXequoi lab&co 8 <br /> www sequo>alabseom <br /> Secor-Rancho Cordova(ARCO) Project ARCO#14932,Stockton,CA MM30614 <br /> 3017 Kilgore Rd Suite 100 Project Number 38984 Reported <br /> Rancho Cordova CA,95670 Project Manager Rusty Benkosky 11/04/03 16 52 <br /> Purgeable Hydrocarbons and BTEX by EPA 8015B/8021B- Quality Control <br /> Sequoia Analytical-Petaluma <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Lint Writs Level Result %REC Lumts RPD Lmut Notes <br /> Batch 3100757-EPA 5030,waters <br /> Blank(3100757-BLK1) Prepared&Analyzed 10/30/03 <br /> Gasoline Range Organics ND 50 ug/1 <br /> Benzene ND 050 " <br /> Toluene ND 0 50 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 0 50 " <br /> Surrogate a a a-Trtfluorotoluene 295 300 98 65-135 <br /> Surrogate 4-Bromofluorobenzene 280 300 93 65-135 <br /> Laboratory Control Sample(3100757-BSI) Prepared&Analyzed 10/30/03 <br /> Gasolme Range Organics 2440 50 ug/1 2750 89 65-135 _....._ .___—._. <br /> Benzene 425 0 50 405 105 65-135 <br /> AffiToluene 229 050 208 110 65-135 <br /> thylbenzene 476 050 450 106 65 135 <br /> Xylenes(total) 245 050 218 112 65-135 <br /> Surrogate a a a-Trtfluorotoluene 334 " 300 111 65-135 <br /> Surrogate 4-Bromofluorobenzene 300 " 300 100 65-135 <br /> Matrix Spike(3100757-MS1) Source P310436-10 Prepared&Analyzed 10/30/03 <br /> Gasoline Range Organics 2490 50 ug/l 2750 10 90 65-135 <br /> Benzene 420 050 405 ND 104 65-135 <br /> Toluene 227 050 208 ND 109 65-135 <br /> Ethylbenzene 469 050 45 0 ND 104 65-135 <br /> Xylenes(total) 241 050 218 0 23 110 65-135 <br /> Surrogate a a a-Triuorotoluene 334 300 111 65-135 <br /> Surrogate 4-Bromofluorobenzene 288 300 96 65-135 <br /> Matrix Spike Dup(3100757-MSD1) Source P310436-10 Prepared&Analyzed 10/30/03 <br /> Gasoline Range Organics 2390 50 ug/l 2750 10 87 65-135 4 20 <br /> Benzene 41 0 050 405 ND 101 65-135 2 20 <br /> Toluene 220 050 208 ND 106 65-135 3 20 <br /> Ethylbenzene 467 050 45 0 ND 104 65-135 04 20 <br /> Xylenes(total) 240 050 218 023 110 65-135 04 20 <br /> Surrogate a a a-Trtfluorotoluene 319 300 106 65-135 <br /> Surrogate 4-Bromofluorobenzene 291 300 97 65-135 <br /> equoia 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 weight basis <br /> This analytical report must be reproduced in its entirety <br /> 6 of 10 <br />