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404 N.Wiget Lane <br /> Sequoia Walnut Creek, 0 <br /> (925)9898 8-960-9600 <br /> Analytical <br /> FAX(9Z5)900-9673 <br /> www.sequoialab.s.com <br /> wwsequviala6s.com <br /> `i San Joaquin Company Inc. Project: 7500 W 11th St.Steet Tracy <br /> 1120 Hollywood Ave.No. 3 Project Number: #9902.012 Reported: <br /> Oakland CA.,94602 Project Manager: Dai Watkins 26-May-00 12:24 <br /> Volatile Organic Compounds by EPA Method 8260A <br /> Sequoia Analytical -Walnut Creek <br /> Reporting <br /> iAnalyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-4 (Wo05376-04)Water Sampled: 11-May-0011:28 Received: 15-May-00 10:25 <br /> ( �ert-Butyl alcohol 130 100 ugll 1 OE18022 18-May-00 19-May-00 EPA 8260A <br /> Hetbyi tert-butyl ether 990 200 100 <br /> Di-isopropyl ether ND 2.0 I " <br /> Ethyl tert-butyl ether ND 2.0 <br /> tem-Amyl methyl ether3.3 2.0 " <br /> 1,2-Dichloroethane ND 2.0 u n to to u u <br /> Ethylene dibromide ND 2.0 " <br /> �urrogate:Dibromofluoromethane 106% 50-150 to " " <br /> Surrogate:1,2-Dichloroethane-d4 106% 50-150 " <br /> MW-5(W005376-05)Water Sampled: I1-May-00 11:45 Received. 15-May-0010:25 <br /> `cert-Butyl alcohol ND 100 ug/1 1 OB19022 18-May-00 19-May-00 EPA 9260A <br /> Methyl tent-butyl ether ND 2.0 to It <br /> " <br /> Di-isopropyl ether ND 2.0 " to " <br /> tert butyl ether ND 2.0 11 to <br /> ....... inyl methyl ether ND 2.0 <br /> 1,2-Dichloroethane ND 2.0 <br /> .- f-thylene dibromide ND 2.0 " <br /> surrogate:Dibromofluoromethane 108% 50-150 <br /> Surrogate:1,2-Dichloroethane-d4 106% 50-150 " <br /> MW-6(W005376-06)Water Sampled: 11-May-0012:00 Received: 15-May-00 10:25 <br /> .crt-Butyl alcohol ND 100 ugll I OE18022 18-May-00 19-May-00 EPA 8260A <br /> Methyl tent-butyl ether 150 2.0 " <br /> Di-isopropyl ether ND 2.0 <br /> I: ethyl tert-butyl ether ND 2.0 <br /> 'iert-Amyl methyl ether ND 2.0 <br /> 1,2-Dichloroethane ND 2.0 " <br /> i- �thylene dibromide ND 2.0 " <br /> Surrogate:Dibromofluorom ethane 106% 50-150 " <br /> Surrogate:1,2-Dichloroethane-d4 126% 50-150 <br /> r <br /> S-equoia Analytical-Walnut Creek The results in this report apply to the scruples analyzed in accordance with the chain of <br /> custody document This analytical report rnust be reproduced in its entirely, <br /> Page 7 of 17 <br />