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404 N Wiget Lane <br /> Sequoia Walnut Creek,CA 94598 <br /> (925)988-9600 <br /> Analytical <br /> FAX(925)988-9673 <br /> IT Corporation Project Sears <br /> 4005 Port Chicago Ilwy Project Number Sears-Stockton Reported <br /> Concord CA,94520 Project Manager Dave Poley 24-Nov-9915 23 <br /> Total Purgeable Hydrocarbons (C6-C12),BTEX and MTBE by DHS LUFT- Quality Control <br /> Sequoia Analytical -Walnut Creek <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 9K15002 Prepared 15-Nov-99 Usmg EPA 5030B [MeOE9 <br /> Flank(9K15002-BLKI) <br /> Purgeable Hydrocarbons ND 1 0 mg/kg <br /> fenzene <br /> ND 00050 <br /> luene ND 00050 <br /> Ethylbenzene ND 00050 " <br /> Cylenes(total) ND 00050 <br /> ethyl tert-butyl ether ND 0 050 <br /> Surrogate a a,o-Tnfluorotoluene 0 676 0 600 113 40-140 <br /> VS(9K15002-BSI) <br /> enzene 0 764 00050 mg/kg 0 800 95 5 50-150 <br /> Oenle <br /> 0774 00050 0800 967 50-150 <br /> enzene 0818 00050 0800 102 50-150 <br /> es(total) 250 00050 240 104 50-150 <br /> tr,o <br /> gate aaa-Tnfluorotoluene 0604 0600 101 40-140 <br /> trlx Spike(9K15002-MSI) Source W91118"4 <br /> Benzene 0 800 00050 mg/kg 0 800 ND 100 50-150 <br /> toluene 0 806 00050 „ 0 900 ND 101 50-150 <br /> thylbenzene 0 820 00050 0 800 ND 102 50-150 <br /> Xylenes(total) 249 00050 240 ND 104 50-150 <br /> arrogate q a a-Tnfluorotoluene 0 598 0 600 997 40-140 <br /> Matrix Spike Dup (9K15002-MSD1) Source W911185-04 <br /> 0832 00050 mg/kg 0800 ND 104 50-150 392 20 <br /> f.enzene <br /> luene 0 836 00050 0 800 ND 105 50-150 365 20 <br /> Ethylbenzene 0 834 00050 0 800 ND 104 50-150 169 20 <br /> ylenes(total) 2 52 00050 240 ND 105 50-150 120 20 <br /> _....—__. <br />=Surrogate a,a a-Tri luorotoluene 0 606 0 600 101 40-140 <br /> ir <br /> Ola Analytical -Walnut Creek - - The results in dv v report apply to the samples analyzed i n accordance weth the chain of <br /> custody document This analytical report must be reproduced m r is ergerery <br /> I a jix�� <br /> Dimple Sharma, roject Manager Page 27 of 46 <br /> 1 <br />