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a in <br /> 1351 Industrial Road <br /> Sequoia San Carlos 23 -%W <br /> a- ) <br /> q t6sa,z32-9600- Analytical FAX qmm labsc 12 <br /> www.sequrnalabs darn <br /> Gettler-RyaNGeostrategies(1) Project Tosco(]) <br /> 6747 Sierra Court,Suite] Project Number Former Unocal SS44409,Stockton,CA ReporE09;39I <br /> Dublin CA,94568 Project Manager Deanna Harding 10/26/01 <br /> Total Purgeable Hydrocarbon (C&C12) by EPA 8O15M and BTEXIMTBE by EPA 8021B <br /> Sequoia Analytical - San Carlos <br /> Reporting <br /> Oyu Result Lunit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-3(L11OO77-04)Water Sampled 10/10/0112-30 Received: 10/12/01_07.35 <br /> Purgeable Hydrocarbons as Gasoline ND 50 ug/I 1 1100094 10/22/01 10/23/01 DHS LUFf <br /> Benzene ND 050 <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 <br /> Xylenes(total) ND 050 <br /> Methyl tert-butyl ether 91 50 <br /> Surrogate a,a,aJhfiuorotoluene 871 % 70-130 " <br /> MW-0(L11OO77-05)Water Sampled 1O11O10111•4O Received: 1O/12/0107.35 <br /> Purgeable Hydrocarbons as Gasoline ND 50 ug/l 1 1100101 10/23101 10/23/01 DHS LUFT <br /> BenzCRe ND 050 <br /> Toluene ND 050 <br /> Ethylbenzene ND 050 <br /> Xylenes(total) ND 050 <br /> Methyl tert-butyl ether 64 50 <br /> Surrogate a,a,a-7lr fuorotoluene 958% 70-130 " <br /> MW-5(L11OO77-06)Water Sampled 10/101011458 Received- 10/1210107-35 <br /> Pargeable Hydrocarbons as Gasoline 8100 1000 ug/l 20 1100100 10/23/01 1OP13/01 DHS LUFF P-02 <br /> Benzene ND 10 <br /> Toluene 12 10 n n n n « « <br /> Ethylbenzene 340 10 <br /> Xylenes(total) 560 10 <br /> Metbyl tert-butyl ether ND 100 <br /> Surrogate a,a,a-Trifluorotoluene 780% 70-130 " <br /> Adak <br /> Sequoia Analytical-San Carlos The results in this report apply to the samples analysed to accordance with the chain of IW <br /> custody document Thu analytical report must be reproduced in its entirety <br /> Page 3 of 16 <br />