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404 N Wiget Lane <br /> Sequoia Walnut Creek,CA 94598 <br /> (925)988-9600 <br /> Analytical _ FAX (925) 988-9673 <br /> IT Corporation Project Sears <br /> 4005 Port Chicago Hwy Project Number Sears-Stockton Reported ' <br /> Concord CA,94520 Project Manager Dave Poley 24-Nov-99 15 23 <br /> Semivolatile Organic Compounds by EPA Method 8270B- Quality Control <br /> Sequoia Analytical -Walnut Creek <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Lurut Units Level Result %REC Lints RPD Limit Notes <br /> Batch 9K17009 - Prepared 17-Nov-99 Usmg EPA 3550A <br /> LCS Dup (9K17009-BSD1) �I <br /> Acenaphthene 252 010 mg/kg 333 757 31-137 241 40 <br /> 4-Chloro-3-methylphenol 373 0 10 500 746 26-103 3 55 40 <br /> 2-Chlorophenol 363 0 10 500 726 25-102 567 40 <br /> 1,4-Dichlorobenzene 243 0 10 333 736 28-104 632 40 <br /> 2,4-Duutrotoluene 285 0 10 333 856 28-89 357 40 <br /> 4-Nitrophenol 3 83 0 50 500 766 11-114 265 40 ' <br /> N-NRrosodi-n-propylarnme 301 0 10 333 904 41-126 687 40 <br /> Pentachlorophenol 393 0 50 500 786 17-109 603 40 <br /> Phenol 363 0 10 500 726 26-90 120 40 <br /> Pyrene 250 0 10 333 75 1 35-142 198 40 <br /> 1,2,4-Tnchlorobenzene 263 0 10 333 790 38-107 547 40 <br /> I <br /> Surrogate 2-Fluorophenol 360 500 720 25-121 <br /> Surrogate Phenol-d6 346 500 692 24413 <br /> Surrogate Nitrobenzene-d5 265 333 796 13-110 <br />—Surrogate-2-Fluorobiphenyl 2 65— —333---796 —30-115— <br /> Surrogate <br /> 30-115— <br /> Surrogate 2 4,6-Tribromophenol 410 500 �82 0 19-122 T <br /> Surrogate P-.Terphenyl-d14 250 _ 333 751 _ 18-137 <br /> Matrix Spike(9_K17_0_09-MS1) Source W911307-02 R-05 <br /> Acenaphthene 301 10 mg/kg 333 ND 904 31-137 <br /> 4-Chloro-3-methylphenol 400 10 500 ND 800 26-103 , <br /> 2-Chlorophenol 390 10 500 ND 780 25-102 <br /> 1,4-Dichlorobenzene 233 10 333 ND 700 28-104 <br /> 2,4-Dmitrotoluene 235 10 333 ND 706 28-89 <br /> 4-N>trophenol ND 50 500 ND 470 11-114 <br /> N-Nitrosodi-n-propylamtne 301 10 333 ND 904 41-126 <br /> Pentachlorophenot ND 50 500 ND 344 17-109 <br /> I <br /> Phenol 433 10 500 ND 866 26-90 <br /> Pyrene 304 10 333 ND 91 3 35-142 <br /> 1,2,4-Tnchlorobenzene 278 10 333 ND 835 38-107 �I <br /> Surrogate 2-Fluorophenol 353 500 706 25-121 <br /> Surrogate Phenol-d6 380 - 500 760 24-113 - <br /> Sequoia Analytical-Walnut Creek The results in tins report apply to the samples analyzed in accordmce with the churn of <br /> custody document This analytical report must be reproduced in i is enh ret <br /> Dimple Sharma,Project Manager Page 42 of 46 <br />