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Sequoia 404 ,Cg�� <br /> t Walnut Geek,CA 44598 <br /> (925)988-9600 <br /> Analytical www `9251988-9673 <br /> www sequolalabs coin <br /> CenProject Ryan,Inc -Dublin Pro ect Unocal <br /> 6747 Sierra Court Suite J Project Number Unocal#10187 Reported <br /> Dublin CA,94568 Project Manager Deanna L Handing 22-Jun-00 07 41 <br /> Volatile Organic Compounds by EPA Method 8260A <br /> Sequoia Analytical -Walnut Creek <br /> Reporting <br /> Analyte Result L,unit Units Dilution Batch Prepared Analyzed Method Notes <br /> U-12(30')(WO06202-05)Water Sampled 07-Jun-00 00 00 Received 08-Jun-00 16 55 <br /> tert-Butyl alcohol ND 100 ug/1 1 OF 11006 11-Jun-00 l I-Jun-00 EPA 8260A <br /> Methyl tent-butyl ether 35 20 ^ ^ <br /> Di-isopropyl ether ND 20 <br /> Ethyl tert butyl ether ND 20 ~ <br /> tert-Amyl methyl ether ND 20 <br /> Surrogate Dibromofluoromethane 104% 50-150 " <br /> Surrogate 1,2-Dichlaroethane-l4 940% 50-150 <br /> U-12(114')(WO06202-06)Water Sampled 07,Jun-00 00 00 Received 08-,tun-00 16 55 <br /> tert-Butyl alcohol ND 100 ug/l I OFI 1006 11-.Jun-00 t I-Jun-00 EPA 8260A <br /> Methyl tett-butyl ether 31 20 ^ <br /> Di-isopropyl ether ND 20 <br /> Ethyl tert-butyl ether ND 20 " <br /> joi6Amyl methyl ether ND 20 <br /> agate Dibromofluoromethane 102% 50-I30 <br /> Surrogate 12-Dichloroethane-d4 900% 50-150 " <br /> U-13(28')(WO06202-07)Water Sampled 07-Jun-00 00 00 Received 08-Jun-00 16 55 <br /> tert-Butyl alcohol ND 100 ugn 1 OF11006 1I-Jun-00 I1-Jun-00 EPA 8260A <br /> Methyl tent-butyl ether 39 20 <br /> Dt-isopropyl ether ND 20 <br /> Ethyl tert-butyl ether N ) 20 <br /> Cert-Amyl methyl ether ND 20 <br /> Surrogate Dibromofluoromethane 100% SO-150 " <br /> Surrogate 12-Dichloroethane-d4 860% 50-150 " <br /> Ola Analytical-Walnut Creek The results in this report apply to the samples anabced in accordance with the churn of <br /> custody document Ms analytical report must be reproduced in ifs entirety <br /> Page 6 of 12 <br />