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404 N WlSet Lane <br /> eek CA 94598 <br /> Seq ruOy a Walnut x(925)988-9600 <br /> 1 FAX(925)988-9673 <br /> Analytical www sequotalabs com <br /> Aft <br /> rtqWF Weston-Vallejo PraJcct San Joaquin HSA <br /> P 0 Soy 2135 Project Number San Ioaqum HSA Reported <br /> Vallejo CA 94592 Project Manager Scott LookLngbill 26-Mav-00 18 37 <br /> Volatile Organic Compounds by EPA Method 8260A <br /> iSequoia Analytical - Walnut Creek <br /> Reporting <br /> nalyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> -9(W005304-02)W-kter Sampled 10-Ma-*-00 12 55 Received 11-May-00 17 05 <br /> tort-ButNI alcohol ND 100 ug/l 1 OE23015 22-May-00 22-\1a} 00 EP A 8260A <br /> t <br /> etliyl tert-butyl ether ND 20 <br /> ° <br /> i-ibopropyl ether ND 20 <br /> Ctltvl tert-butyl ether ND 2 0 <br /> rt-Amyl methyl ether ND 20 " <br /> irrogate Dtbromofluoromethane 102 % 50-150 <br /> Surrogate 12-Dichloroethane-d4 114 % 50-150 " <br /> -3A(WO05304-05)Water Sampled 11-May-00 10 40 Received 11-May-00 17 05 <br /> rt-Butyl alcohol ND 100 ug/1 1 OE23015 22-May-00 22-May-00 EPA 9260A <br /> Methyl tert-butyl ether ND 20 " <br /> lti-isopropyl ether ND 20 <br /> th}1 tent-butyl ether ND 20 " <br /> tert-Amyl methyl ether ND 20 <br /> toate Dibromofluoromethane 980 % 50-150 <br /> ate 1 2-Dichloroethane-d4 104 % 50-150 <br /> MW-2A(W005304-08)Water Sampled 11-May-00 13 25 Received 11-Mav-00 17 05 <br /> r1 <br /> -Butyl alcohol ND 100 ug/I I OE23015 22-May-00 23-May-00 EPA 8260A <br /> thyl tert-butyl ether ND 20 " <br /> Di-isopropvl ether ND 20 <br /> thyl tort-butyl ether ND 20 " <br /> rt-Amyl methyl ether ND 20 " <br /> tirrogate Dihroinofluoromethane 100 % 50-150 <br /> Surrogate 1,2-Dichloroethane-d4 114 % 50-150 <br /> oia Analytical - Walnut Creek rhe results in lhts report apply to the sainples anafjYed tri accordance with the chain of <br /> cuslody document This analytical report must be reproduced nt its entirety <br /> Page 5 of ll <br />