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• 1551 Industnal Road <br /> Sequoia San Carlos CA 94070 , <br /> r ► Analytical FAX(650)232-9600 <br /> (650)232-9612 <br /> www sequoialabs cpm <br /> Gettler-Ryan/Geostrategies(1) Project Unocal(4) <br /> 6747 Sierra Court, Suite J Project Number Former Unocal#5098,Stockton Reported <br /> Dublin CA,94568 Prafect Manager Deanna Harding 07/01/02 07 46 ' <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical - San Carlos <br /> Reporting <br /> Analyte Result Lunt Units Dilution ` Batch Prepared Analyzed Method Notes <br /> MW-15(x,206021-18)Water Sampled 06110/0211 58 Received 06/11/02 18 05 <br /> Styrene ND 20 ug/1 1 2060032 06/21/02 06/21/02 EPA 8260B <br /> 1,1,1,2-Tetrachlorocthane ND 20 <br /> 1,1,2,2-Tetrachloroethane ND 2 0 <br /> Tetrachloroethene ND 2 0 <br /> Toluene ND 2 0 <br /> 1,2,3-Trichlorobenzene ND 20 <br /> 1,2,4-Trichlorobenzene ND 2 0 <br /> 1,1,1-Tnchloroethane ND 20 <br /> 1,1,2-Tnehloroethane ND 20 <br /> Trichloroethene ND 2 0 <br /> Trichlorofluoromethane ND 5 0 <br /> 1,2,3-Trichloropropane ND 2 0 " <br /> 1,2,4-Trimethylbenzene ND - 2 0 <br /> 1,3,5-Tnmethylbenzene ND 2 0 " ^ <br /> Vinyl chloride ND 2 0 <br /> Total Xylenes ND 2 0 <br /> Surrogate 1.2-Dichloroethane-d4 106 Ve 76-114 " <br /> Surrogate Toluene-d8 974% 88-110 <br /> Surrogate 4-BFB 920% 86-115 " <br /> MW-16(L206021-1 LWater _Sampled 06/11/02 09 10 Received 06/11/02 18 05 <br /> Benzene— —ND 2 0—ug/t ! 2060032-06I21/02T06/21/02�EPA 8260B� — { <br /> Bromobenzene ND 2 0 1. 1. <br /> " ^ " " -' <br /> =Bromochloromethane -- — -- - ---- ND-- --2 0-- - <br /> -Bromodichloromethane ND 20 <br /> Bromofonn �- -_ ---- ------- -ND `- --=-2-0 - <br /> Bromomethane ND 5 0 <br /> n-Butylbenzene ND 2 0 " " <br /> -sec-Butylbenzene- __ _ _ _ __- ND` - -2 0 <br /> Tert-butylbenzene r Y ND 2 0 <br /> Carbon tetrachloride ND 2 0 <br /> Chlorobenzene ND 2 0 " <br /> - Chloroethane ND 5 0 <br /> Chloroform ND 2 0 <br /> Chloromethane ND 5 0 <br /> 2-Chlorotoluene ND 2 0 <br /> 4-Chlorotoluene ND 2 0 <br /> Dibromochloromethane - - - ND- 2 0 <br /> 1,2-Dibromoethane- -- - -- - -- -- ND- -- _ 2 0- - - - - - - --- - - -- - - - - - --- - -- - <br /> Dibrornomethane ND 2 0 <br /> Sequoia 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 in its entirety ' <br /> Page 36 of 103 ' <br />