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819 Striker Avenue Suite 8 <br /> Sequoia Sacramento C9 <br /> 5834 <br /> (916)921-96M 1-960096M <br /> FAX(916)921-0 100 <br /> Analytical www sequolalabs com <br /> Aw <br /> Gettler-Ryan-Rancho Cordova Project Former Unocal 0187, Stockton,CA <br /> Project Number NIA Reported <br /> 3140 Gold Camp Dr,Ste 170 06/04/02 13 17 <br /> Rancho Cordova CA,95670 Project Manager David Herzog <br /> Total Purgeable Hydrocarbon,BTEX and MTBE by DHS LUFT <br /> Sequoia Analytical- Sacramento <br /> Reporting <br /> [A..lytcMethod Notes <br /> Result Irmo Units Dilution batch Prepared Analyzed <br /> U-3(S205258-01)Water Sampled 05/21/02 09 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 /> Xylenes(total) ND 050 <br /> Methyl tert-butyl ether ND 2 5 <br /> Surrogate a,a,a-Trtfluorotoluene <br /> 106% 60-140 " <br /> NP-1-22(5205258-02)Water Sampled 05/21/02 09 40 Received 05/21/02 16 41 <br /> Purgeable Hydrocarbons 7600 1000 ug/l 20 2050268 05/23/02 05/23/02 DHS LUFT <br /> Benzene 250 10 , <br /> Toluene 73 10 " <br /> Ethylbenzene 420 10 <br /> es(total) 1200 10 <br /> _ yl tert-butyl ether 110 50 <br /> Surrogate a,a,a-Trtfluorotoluene <br /> 131 % 60-140 " <br /> NP-1-65(S205258-03)Water Sampled 05/21/02 10 05 Received 05/21/0216 41 <br /> Purgeable Hydrocarbons 5100 1000 ug/1 20 2050268 05/23/02 05/23/02 17H5 LUFT <br /> 10 <br /> Benzene 65 <br /> Toluene 480 10 <br /> Ethylbenzene 84 10 ^ <br /> 10 " <br /> Xylenes(total) 820 , <br /> " <br /> Methyl tert-butyl ether 120 50 " <br /> Surrogate a a,a-Trifluorotoluene 113% 60-140 " <br /> nota Analytical-Sacramento custody <br /> results in this report apply to the samples analyzed to accordance with the chain of <br /> custody document This analytical report must be reproduced in its entirety <br /> Page 2 of 7 <br />