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I(& Sequoia 1551 Industnal Road <br /> San Carlos CA 94070 <br /> Analytical (650)232-9604 <br /> FAX(650)232-9612 <br /> www sequoialabs cam <br /> lill <br /> er-Ryan/Geostrategies(I) Project Unocal(4) <br /> Sierra Court, Suite,1 Project Number Former Unocal#5098,Stockton <br /> n CA, 94568 Reported <br /> Project Manager Deanna Harding 0'7/Ol/02 07 46 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical - San Carlos <br /> Reportmg <br /> alyte Result Liinit Units Dilution Batch Prepared Analyzed Method Notes <br /> ELW-10A L206021-12 Water Sampled 06/10/02 12 00 Received 06111/02 18 05 <br /> rene ND 20 ug/l 1 2060032 06/20/02 06/21/02 EPA 8260E <br /> 1,1,1,2-Tetrachloroethane ND 20 „ <br /> ,2,2-Tetrachloroethane ND 20 „ <br /> trachloroethene ND 20 <br /> „ <br /> Iluene ND 2 0 <br /> 1 2,3-Trichlorobenzene ND 2 0 Pi <br /> 1 <br /> 4-Tnchlorobenzene ND 2 0 <br /> ,1-Tnchloroethane ND 2 0 <br /> 1,1,2-Trichloroethane ND 2 0 <br /> 1chlororthene ND 2 0 ^ „ <br /> chlorofluoromethane ND 5 0 " <br /> ,3-Trichloropropane ND 2 0 <br /> t,4-Tnmethylbenzene ND 20-Trimethylbenzene ND 2 0 <br /> yl chloride ND 20 " <br /> Total Xylenes ND 2 0 ^ „ <br /> to 1,2-Dichloroethane-d4 104% 76-114 „ <br /> ate Toluene-d8 101 % 88-110 <br /> Surrogate 4-BFB 942% 86115 „ <br /> -11 L206021-13 Water Sam led 06/11/02 10 55 Received 06/11/02 18 05 <br /> zene 8600 210 ug/l 104 2060034 06/24/02 06/24/02 EPA 8260B <br /> 3romobenzene ND 210 „ <br /> n „ <br /> ochloromethane ND 210 <br /> odichloromethane ND 210 n <br /> Iromoform ND 210 <br /> n „ <br /> Eutylbenzene <br /> methane ND 520]benzene ND 210 <br /> ND 210 „ <br /> ert-butylbenzene ND 210 ^ „ <br /> on tetrachloride ND 210 <br /> trobenzene <br /> ND 210 <br /> hloroethane ND 520 ^ ^ ^ <br /> ^ " n <br /> „ <br /> roform ND 210 ^ „ <br /> romethane ND <br /> s n „ <br /> florotoluene ND 210 „ <br /> Chlorotoluene ND 210 ^ <br /> tmochloromethane ND 210 " <br /> ibromoethane ND 210 <br />�bromoinethane ND 210 <br /> 0 Analytical-San Carlos The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document This analytical report must be reproduced to its entirety <br /> r <br />' Page 27 of 10; <br />