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819 Striker Avenue Suite 8 <br /> Sacramento rA 95834 <br /> Sequoia (916)921-9600 <br /> FAX(916)92 1-0100 <br /> Analytical www sequolalabs cam <br /> is - <br /> Gettler-Ryan-Rancho Cordova Project Former Unocal 0187, Stockton,CA S208305 <br /> 3140 Gold Camp Dr,Ste 170 Project Number NIA Reported <br /> Rancho Cordova CA,95670 Project Manager David Herzog 08/29/02 11 37 <br /> Total Purgeable Hydrocarbon, BTEX and MTBE by DHS LUFT <br /> Sequoia Analytical- Sacramento <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> NP-1-111 (5208305-04)Water Sampled 08/22/02 08 44 Received 08/22/02 15 43 <br /> Purgeable Hydrocarbons 53 50 ugll 1 2080277 08/27/02 08/27/02 DHS LUFT HC-12 <br /> 0 50 " <br /> Benzene 20 , <br /> Toluene <br /> 092 050 <br /> „ <br /> Ethylbenzene ND 050 ;; ^ <br /> Xylenes(total) 069 0 50 " <br /> Methyl tert-butyl ether ND 25 " <br /> Surrogate a a,a-Trtfluoratoluene <br /> 80% 60-140 " <br /> NP-2-22(5208305-05)Water Sampled 08/22/02 07 33 Received 08/22/02 15 43 <br /> Purgeable Hydrocarbons ND 50 ugll 1 2080277 08/27/02 08/27/02 DHS LUFT <br /> Benzene ND 050 „ <br /> Toluene ND 050 <br /> Ethylbenzene ND 050 <br /> " <br /> nes(total) ND 050 H „ <br /> yl tent-butyl ether ND 2 5 <br /> Surrogate a,a,a-Tr�uorotoluene <br /> 94% 60-140 <br /> NP-2-60(5208305-06)Water Sampled 08/22/02 07 44 Received 08/22/02 15 43 <br /> Purgeable Hydrocarbons 6200 5000 ugll 100 2080277 08/27/02 08/27/02 DHS LUFr HC-12 <br /> Benzene 2400 50 „ <br /> Toluene 120 50 " <br /> Ethylbenzene ND 50 <br /> 50 " <br /> Xylenes(total) 100 „ <br /> Methyl tert-butyl ether ND 250 " <br /> Surrogate a,a,a-Trifluorotoluene 90% 60-140 " <br /> cola 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 to its entirety <br /> Page 4 of 8 <br />