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' 404 N Wiget Lane <br /> 4D Sequoia Walnut Creek CA 94598 <br /> (925)988-9600 <br /> Analytical <br /> FAX(925)988-9673 <br /> IT Corporation Protect 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 />' Volatile Organic Compounds by EPA Method 8260A- Quality Control <br /> Sequoia Analytical -Walnut Creek <br /> Reporting Spike Source °/aREC RPD <br /> yte Result Lumt Units Level Result %REC Luruts RPD Lurut Notes <br /> Batch 9K10025 Prepared 09-Nov-99 Usmg EPA 50308 [MeOH] <br /> lank(9K10025-BLKI) <br />'Thlorobenzene ND 0 10 mg/kg T <br /> Ethylbenzene ND 010 " <br /> otal Xylenes ND 0 10 <br /> ,1,1,2-Tetrachloroethane ND 010 <br /> Styrene ND 0 10 " <br /> kpr.pylbenzene <br /> ND 010 ND 0 10 <br /> 1,2,2 Tetrachloroethane ND 0 10 " <br /> romobenzene ND 010 '1 <br /> n-Propylbenzene ND 0 10 <br /> Wochloropropane ND 010toluene ND 0 10 <br /> 1,3,5-Tnmethylbenzene ND 010 " <br /> 4-Chlorotoluene ND 010 " <br /> lert-Birtylbenzene ND 010 " <br /> 1,2,4-Tnmethylbenzene ND 010 " <br /> r1 <br /> 13utylbenzene ND 010sopropyltoluene ND 0 to " <br /> 1,3-Dichlorobenzene ND 010 " <br />�4-Dichlorobenzene ND 010 <br /> -Butylbenzene ND 010 <br /> 1,2-Dichlorobenzene ND 010 " <br />�2-Dibromo-3-chloropropane ND 0 10 " <br /> ,2,4 Tnchlorobenzene ND 0 10 " <br /> Naphthalene ND 030 " <br /> ifexachlorobutadiene ND 0 10 <br /> 2 3 Tnchlnrnhen-zene Nn 0 ]Q <br /> Surrogate Dibromofluoromethane 235 250 940 50-150 <br /> Furrogate 12Dichloroethane-d4 220 250 880 50-150 <br /> rrogate Toluene-d8 2 45 250 980 50-150 <br /> Surrogate 4-BramoJluorobenzene 255 250 102 50-150 <br /> ola Analytical-Walnut Creek The results rn this report apply to the samples analyzed en accordfmce with the chwn of <br /> custody document Tins analyncal report must he reproduced in its entirety <br /> impre arma, rajelt anger Page 31 of 46 <br />