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M7 404 N.Wiget Lane <br /> Sequoia walnut Creek,CA 94598 <br /> (925)988-9600 <br /> FAX(925)988-9673 <br /> F Analytical wwwsequofalabs.com <br /> San Joaquin Company Inc, Project: 7500 W 11th 5t,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- Quality Control <br /> Sequoia Analytical -Walnut Creek <br /> Reporting Spike Source %REC RPD <br /> 'Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch OEI8022-EPA 5030B [P/T] <br /> Plank(OE18022-BLK1) Prepared&Analyzed: 18-May-00 <br /> Ethanol ND 500 ugll <br /> terl-Butyl alcohol ND 100 " <br /> Methyl tert-butyl ether ND 2.0 " <br /> 'Di-isopropyl ether ND 2.0 " <br /> Ethyl tort-butyl ether ND 2.0 " <br /> ferl-Amyl methyl ether ND 2.0 " <br /> 11 31,2-Dichlorocthane ND 2.0 " <br /> Ethylene dibron ide ND <br /> ,Surrogate:Dibromofluoromethane 51.0 " 50.0 102 50-150 <br /> Simrogate:l,2Dichloroethane-d4 51.0 50.0 102 50-150 <br /> Blank(OE18022-BLK2) Prepared&Analyzed: 19-May-00 <br /> ND 500 ug/l <br /> ;duty]alcohol ND I00 " <br /> Methyl tent-butyl ether ND 2.0 " <br /> k <br /> ":Ah-isopropyl ether ND 2.0a <br /> i:'Ethyl tert-butyl ether ND 2.0 " <br /> tort-Amyl methyl ether ND 2.0 " <br /> ;t,2-Dichlorcethane ND 2.0 " <br /> $thylene dibromide ND 2.0 " <br /> Surrogate:Dibromofluorourelhane 54.0 " 50.0 108 50-150 <br /> urrogate:1,2-Dichloroeihaile-d4 56.0 50.0 112 50-150 <br /> !__.,,CS(OE18022-BSI) Prepared&Analyzed: 18-May-00 <br /> Methyl tert-butyl ether 59.9 2.0 ugll 50.0 120 70-130 <br /> Suriogale:Dibromofluorornethane 53,0 50.0 106 50-150 <br /> ` Surrogate:1,2 Diclrloroe[hane-d4 52.0 50.0 104 50-150 <br /> Sequoia Analytical-Walnut Creek The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document.This analytical report must be reproduced in its entirety, <br /> i <br /> Page 15 of 17 <br />