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819 Striker Avenue Suite 8 <br /> Sequoia Sacramento C2 95834 <br /> %W <br /> 1 (91b)921-9600 <br /> FAX(916)92 1-0100 <br /> rF <br /> Analytical www sequoialabs com <br /> Gettler-Ryan-Rancho Cordova Project Former Unocal 0187,Stockton,CA <br /> 3140 Gold Camp Dr,Ste 170 Project Number NIA Reported <br /> Rancho Cordova CA,95670 Project Manager David Herzog 06/04/02 13 17 <br /> Total Purgeable Hydrocarbon,BTEX and MTBE by DHS LUFT <br /> Sequoia Analytical - Sacramento <br /> Rqmrting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> NP-1-111(5205258-04)Water Sampled 05/21/02 10 24 Received 05/21/02 16 41 <br /> Purgeable Hydrocarbons ND 50 ug/1 1 2050268 05/23/02 05/23/02 DHS LUFT <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 0 50 <br /> " <br /> Xylenes(total) ND 050 , <br /> Methyl tert-butyl ether ND 2 5 <br /> Surrogate a,a,a-Trifluorotoluene 98% 60-140 " <br /> NP-2-22(5205258-05)Water Sampled 05/21/02 10 59 Received 05/21/02 16 41 <br /> Purgeable Hydrocarbons 200 50 ug/1 1 2050268 05/23/02 05/23/02 DHS LUFT HC-12 <br /> " <br /> Benzene 49 050 <br /> Toluene 0 55 050 <br /> Ethylbenzene 054 050 <br /> wynes(total) ND 050 <br /> " <br /> l te_rt17 25 <br /> _-butyl ether <br /> Surrogate a a,a-Trifluorotoluene <br /> 118% 60-140 " <br /> NP-2-60(5205258-06)Water Sampled 05/21/0211 16 Received 05/21/02 16 41 <br /> Purgeable Hydrocarbons 18000 10000 ug/1 200 2060006 05/30/02 05/30/02 DHS LUFT HC-12 <br /> 100 <br /> 5900 " <br /> Benzene „ <br /> Toluene 270 100 " <br /> Ethylbenzene 420 too <br /> 100 " <br /> Xylenes(total) 290 „ <br /> Methyl tert-butyl ether ND 500 <br /> Surrogate a a,a-Trifluorotoluene 98% 60-140 " <br /> UO custody 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 7 <br />