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819$ aer <br /> Avenue Suite <br /> Sacramento <br /> l <br /> (916)921-9600 <br /> - Analytical F (916)911 <br /> wwww sequoialabscom can <br /> Gettler-Ryan-Rancho Cordova Project Former Unocal 0187,Stockton,CA 521.0535 <br /> 3140 Gold Camp Dr,Ste 170 Project Number N/A Reported <br /> Rancho Cordova CA,95670 Project Manager Geoffrey D Risse 11/12/02 16 29 <br /> Total Purgeable Hydrocarbon, BTEX and MTBE by DHS LUFT <br /> Sequoia Analytical - Sacramento <br /> Reporting <br /> Analyte Result Lima Units Dilution Batch Prepared Analyzed Method Notes <br /> U-3(5210535-01)Water Sampled 10/21/02 08 35 Received 10/21/02 15 10 <br /> Purgeable Hydrocarbons ND 50 ug/1 1 2100387 10/25/02 10/25/02 AHS LUFT <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Methyl tert-butyl ether ND 25 _ <br /> Surrogate a,a,a-Trtfluorotoluene 98% 60-140 <br /> NP-1-22(S210535-02)Water Sampled 10/21/02 08 07 Received 10/21/02 15 10 <br /> Purgeable Hydrocarbons 55 50 ug/1 1 2100387 10/25/02 10/25/02 DHS LUFT <br /> Benzene 098 050 " " <br /> Toluene 0 51 050 " <br /> Ethylbenzene 1 1 050Aft " <br /> nes(total) 13 050 " <br /> yl tert-butyl ether ND 2 5 <br /> Surrogate a a a-Trifluorotoluene 111 % 60-140 " <br /> NP-1-65(5210535-03)Water Sampled 10/21/02 08 22 Received 10/21/02 15 10 <br /> Purgeable Hydrocarbons 3500 2500 ug/1 50 2100387 10/29/02 10/29/02 DHS LUFT <br /> Benzene 82 25 " " <br /> Toluene 270 25 " <br /> Ethylbenzene 260 25 " <br /> Xylenes(total) $20 25 " <br /> Methyl tert-butyl ether ND 120 11/04/02 HT-RS <br /> Surrogate a a a-Tr111uorotoluene 73% 60-140 " " 10129102 It <br /> oia Analytical-Sacramento 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 3 of 11 <br />