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' 404 N Wiget Lane <br /> l Sequoia Walnut Creek,CA 94598 <br /> FAX <br /> (925)988-9600 <br /> �,,,� Analytical (925)988-9673 <br /> 1T 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 />' Volatile Organic Compounds by EPA Method 8260A- Quality Control <br /> Sequoia Analytical -Walnut Creek <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Lunt Units Level Result %REC Limits RPD Limit Notes <br /> Batch 9K10025 Prepared 09-Nov-99 Usmg EPA 50308 [MeOH] <br /> atrix Spike Dup (9K10025-MSD1) Source W911089-01 <br /> Surrogate 1 2-Drchloroethane-d4 240 mg/kg 250 960 50-150 <br /> fra- 9. <br /> rate Dibromofluoromethane 325 " 250 130 50-150 <br /> ate 12-Drchloroethane-d4 390 250 156 50-150 S-03 <br /> Surrogate Toluene-d8 250 " 250 100 50-150 <br /> arrogate 4-Bromofluoroberaene 295 250 118 50-150 <br /> arch 9K23015 Prepared 22-Nov-99 Using EPA 5030B [PIT] <br /> lank(9K23015-BLKI) <br /> ichlorodifluoromethane ND 010 mg/kg <br /> Chloromethane ND 010 " <br /> chloride ND 010 „ <br /> methane ND U 10 " <br /> Chloroethane ND 010 <br /> richlorofluoromethane ND 010 <br /> 1.T1 l-Dichloroethene ND 010 " <br /> Methylene chloride ND 050 " <br /> an3 <br /> -1,2-Dichloroethene ND 010 " <br /> -Butanotie ND 0 50 " <br /> 1,1-Dichloroethane ND 010 " <br /> 2-Dichloropropane ND 0 10 " <br /> is-1,2-Dichloroethene ND 0 10 " <br /> Bromochloromethane ND 010 " <br /> fI[oroform <br /> ND 0 10 " <br /> ,l-Tnchloroethane ND 010 " <br /> cis-1,3-Dichloropropene ND 010 " <br />�arbon tetrachloride ND 0 10 <br /> in„hl, wan n in <br /> W, ... ...oprope ., <br /> Benzene ND 010 " <br /> aukrans- ND 0 10 " <br /> ,2-Dichloroethane ND 0 10 " <br /> Trichloroethene ND 010 " <br /> oza Analytical-Walnut Creek The results in the report apply to the samples analyzed r n accordance with the charm of <br /> lcustody document Thus analytical report must be reproduced in its enhrety <br /> trap a arma, anger Page 33 of 46 <br />