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Sequoia _ ]551 ]ndustrial Raa <br /> San Carlos Cq 9407 <br /> (650)232 96 <br /> Analytical FAX(650)2329612 <br /> www sequoialabs co <br /> Gettler-Ryan/Geostrategies(I) Project Unocal(4) <br /> 6747 Sierra Court,Suite J Project Number Former Unocal#5098 &Montgmery Ward Reported <br /> Dublin CA, 94568 Project Manager Deanna Harding 03/26/02 12 44 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical - San Carlos <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-21S(L203015-25)Water Sampled 03/03/02 12 45 Received 03/05/02 IS 25 _ <br /> 1,2-Dibrorno-3-chloropropane ND 50 ug/I 1 2030017 03/08/02 03/12/02 EPA 8260B <br /> I,2-Dichlorobenzene ND 20 <br /> 1,3-Dichlorobenzene ND 20 <br /> 1,4-Dichlorobenzene ND 20 <br /> Dichlorodifluoromethane ND 50 <br /> 1,1-Dichloroethane ND 20 " <br /> 1,2-Dichloroethane ND 20 <br /> 1,1-Dichloroethene ND 20 <br /> cis-1,2-Dichloroethene ND 20 " <br /> trans-1,2-Dichloroethene ND 20 <br /> 1,2-Dicbloropropane ND 20 " <br /> 1,3-Dichloropropane ND 20 " <br /> 2,2-Dichloropropane ND 20 <br /> 1,1-Dichloropropene ND 20 " <br /> Ethylbenzene ND 2 0 „ <br /> Hexachiorobutadiene ND 20 <br /> Isopropylbenzene ND 20 " <br /> p-Isopropyltoluene ND 20 <br /> Methylene chloride ND 5 0 <br /> Naphthalene ND 5 0 <br /> n-Propylbenzene ND 2 0 „ <br /> Styrene ND 2 0 - <br /> 1,1,1,2-Tetrachloroethane ND 20 <br /> 1,I,2,2-Tetrachlorocthane-- - ---- --- -ND=----2 0---^ „- -- - -- =--"--- --- - -„ - - - -- <br /> Tetrachloroethene ND 20 " <br /> Toluene----- ---- - - -- - - - -----ND= - -- 2 0-----„- - ---„ - -„- — - -- - -„ <br /> 1,2,3-Trichlorobenzene ND 2 0 <br /> 1,2,4-Trichlorobenzene ND 2 6 <br /> ImTnchloroethane— --ND- - -- ---20 - <br /> 1,1 2-Trichlorocthane <br /> L_ ---20 1,12-Trichloroethane ND 2 0 <br /> Trichloroethene ND 2 0 <br /> Trichlorofluoromethane ND - 5 0- <br /> 1,2,3-Trichloropropane ND 2 0 „ <br /> 1,2,4-Trimethylbenzene ND 20 " <br /> 1,3,5-Tnmethylbenzene ND 2 0 <br /> Vinyl chloride ND 20 <br /> Total Xylenes ND 20 " <br /> Surrogate 1,2-Dichloroethane-d4 106% - 63-118 " <br /> _Surrogale Toluene-d8 __ _ _ r _ __ _96 8% _ -- 88-110 <br /> Surrogate 4-BFB 101 % 86-115 " » <br /> Sequoia Analytical - San Carlos The results in this repos t apply to the samples analvzed in accordance with the chain of, <br /> custody document This analytical report must be reproduced in its entirety <br /> Page 51 of 91 1 <br />