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1551 Indusinal(toad <br /> Sequoia San Carlos CA 94070 <br /> (650)232-9600 <br /> Analytical FAX(650)232-9612 <br /> www sequoialabs com <br /> Gettler-Ryan/Geostrategies(1) Project Unocal(4) <br /> 6747 Sierra Court,Suite J Project Number Former Unocal#2859,Stockton Reported - <br /> Dublin CA,94568 Project Manager Deanna Harding 03/04/02 08 47 <br /> Total Purgeable Hydrocarbon (C6-C12) by EPA 8015M and BTEX/MTBE by EPA 8021B <br /> Sequoia Analytical - San Carlos <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-19 L202097-10 Water Sampled 02/15/02 11 40 Received 02/17/0211 00 <br /> Purgeable Hydrocarbons as Gasoline ND 50 ug/l - 1 2020071 02/21/02_ 02/21/02 EPA 8021 B - <br /> Benzene ND 050 <br /> Toluene ND 050 <br /> Ethylbenzene ND 0 50 <br /> Xylenes(total) ND 050 ^ <br /> Methyl tert-butyl ether ND 5 0 " <br /> Surrogate a,a,a-Trifluorotoluene 816% 70-130 ^ " <br /> TB-LB(L202097-11lWater Sampled 02/15/02 13.30 Received 02/17/02 11 00 <br /> Purgeable hydrocarbons as Gasoline ND 50 ug/1 1 2020071 02/21/02 02/21/02 EPA 8021B . <br /> Benzene ND 050 <br /> Toluene ND 050 <br /> Ethylbenzene ND 050 <br /> Xylenes(total) ND 050 <br /> Methyl tert-butyl ether ND 5 0 " <br /> Surrogate a,a,a-Trifluorotoluene 747% 70-130 <br /> MW-2(L202097-12)Water Sampled 02/16/02 13 20 Received 02/I7102 11 00 <br /> Purgeable Hydrocarbons as Gasoline 63000 10000 ug/l 200 2020070 02/21/02 02/21/02 EPA 8021B P-02 <br /> Benzene 3700 100 <br /> Toluene 10000 100 <br />—Ethylbenzene 3900 100 ^ " <br /> Xylenes(total) 13000 100 <br />-=Methyl tent-butyl ether — --- -ND ----1000 ---" — - ,�-- -�-----�-------- — ----- <br /> - Surrogate a,a,a-Truarotoluene- - -_=_-_ -�= —919%=- -=-70-130- ----=" =--- --- -- --- - -- "_=�=- <br />