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Sequoia <br />1%p Analytical <br />404 N Wiget Lane <br />Walnut Creek, CA 94598 <br />(925) 988-9600 <br />FAX (925) 988-9673 <br />Uettler Rydn, Inc - Dublin Project Chevron <br />6747 Sierra Court Suite J Project Number Chevron # 9-5775 Reported <br />Dublin CA, 94568 Project Manager Barbara Siemmski 05 -Jan -00 10 22 <br />Total Purgeable Hydrocarbons (C6 -C12), BTEX and MTBE by DHS LUFT <br />Sequoia Analytical - Walnut Creek <br />Reporting <br />Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Note <br />SB3-10 5 (W912522-01) Sail Sampled 21 -Dec -99 12 50 Received 23 -Dec -99 13 U5 <br />Purgeable Hydrocarbons ND 10 mg/kg 20 OA03003 03 -Jan -00 03 -Ian 00 EPA <br />Benzene 0 011 00050 " " 801518020 <br />Toluene 0 011 00050 " <br />Ethylbenzene ND 00050 " <br />Xylenes (total) 00078 00050 " <br />Methyl tert-butyl ether 037 0 050 " <br />Surrogate a a a-Tnfluorotoluene 115% 40-140 11" <br />SB3-25 5 (W912522-02) Soil Sampled 21 -Dec -99 13 05 Received 23 -Dec -9913 05 <br />Purgeable Hydrocarbons <br />ND <br />10 mg/kg 20 OA03003 03 -Jan 00 04Jan-00 EPA <br />Benzene <br />00060 <br />00050 0 " 1. 8015/8020 <br />Toluene <br />00076 <br />00050 to 11" <br />Ethylbenzene <br />ND <br />00050 11 11" <br />Xylenes (total) <br />ND <br />00050 " <br />Methyl tert-butyl ether <br />4 9 <br />0 050 " <br />Prrogate a,a,a-Tnfluorotoluene <br />114% 40-140 11" <br />SB340 (W912522-03) Soil Sampled <br />21 -Dec -991320 <br />Received 23 -Dec -99 13 05 <br />Purgeable Hydrocarbons <br />ND <br />10 mg/kg 20 OA03003 03 -Jan -00 03 -Jan -00 EPA <br />Benzene <br />0 027 <br />00050 " "1 11 8015/8020 <br />Toluene <br />0 018 <br />00050 to" 11 " <br />Ethylbenzene <br />00072 <br />00050 "to 11" <br />Xylenes (total) <br />0 039 <br />00050 " <br />Methyl tert-butyl ether <br />074 <br />0 050 " <br />.Surrogate a,a a-Tnfluorotoluene <br />113% 40-140 <br />Sequoia Analytical - Walnut Creek The results in this report apply to the smnples analyzed i n accordance with the than of <br />custody document Tlns analytical report must be reproduced w tis entirety <br />;771—andemP, a story hector Page 2 of 15 <br />V <br />