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Sequoia 819 Striker Avenue Suite8 <br /> 958 <br /> Sacramento CA 95834 <br /> 4 41 (916) 921-96W <br /> FAX 921 OO <br /> VWOAnalytical www sequaslabs com <br /> Gettler-Ryan-Dublin Project Unocal 0 18 7, Stockton CA <br /> 6747 Sierra Court Ste J Project Number NIA Reported <br /> Dublin CA,94568 Project Manager P LeCherninant 02/02/01 17 42 <br /> Total Purgeable Hydrocarbons (C6-C12), 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-2-20(5101340-04)Water Sampled 01/23/01 10 25 Received 01/23/01 13 35 <br /> Purgeable Hydrocarbons 299 500 ugfl 1 1010280 01/26/01 01/26/01 DHS LUFT P-03 <br /> Benzene 165 0 500 " <br /> Toluene ND 0 500 " <br /> Ethylbenzene 3 11 0 500 " <br /> Xylenes(total) 7 52 0 500 " <br /> Methyl tert-butyl ether ND 250 _ <br /> Surrogate a a a-Trifluorotoluene 103% 60-140 <br /> NP-2-60(5101340-05)Water Sampled 01/23/01 10 35 Received 01/23/01 13 35 <br /> Purgeable Hydrocarbons ND 10000 <' ii 7 1 01/25/01 DHS LUFT <br /> Benzene 2770 100 <br /> Toluene 167 too � al " <br /> Gylbenzene 155 100 l " <br /> enes(total) 328 100 <br /> Methyl tert-butyl ether ND 500 <br /> Surrogate a a a-Trtfluorotoluene 950% 3(5-(0 l <br /> NP-2-116(5101340-06)Water Sampled 01/23/01 10 15 Received <br /> Purgeable Hydrocarbons 908 500 ug/l l 1020003 01/31/01 01/31/01 DHS LUFT P-02 <br /> Benzene 198 0 500 " <br /> Toluene ND 0 500 " <br /> Ethylbenzene ND 0 500 " <br /> Xylenes(total) 0 544 0 500 " <br /> Methyl tert-butyl ether ND 250 _ <br /> Surrogate a a,a-Trifluorotoluene 950% 60-140 " <br /> equola Analytical -Sacramento The 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 /> p Page 3 of 8 <br />