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404 N.Wiget Lane <br /> Sequoia Walnut Creek, 94598 <br /> (925)98 8-9b00 <br /> FAX(925)988-9673 <br /> Analytical wwwr.sequoialabs.com <br /> i I San Joaquin Company Inc, Project: 7500 W 11th St.Stect Tracy <br /> 1120 Hollywood Ave.No.3 Project Number: #9902.012 Reported: <br /> Oakland CA.,94602 Project Manager: Dai Watkins 24-May-00 15:19 <br /> f ' Total Metals by EPA 6000/7000 Series Methods - Quality Control <br /> 1. I <br /> ` Sequoia Analytical -Walnut Creek <br /> . Reporting Spike Source %REC RPD <br /> lt:__Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch OD28008-EPA 3050B <br /> $lank(OD28008-BLK1) Prepared&Analyzed:28-Apr-00 <br /> Lend ND 1.5 mg/kg <br /> - iLCS(OD28008-BSl) Prepared&Analyzed:28-Apr-00 <br /> is l <br /> -- end 50.0 1.5 mg/kg 50.0 100 80-120 <br /> LCS Dup (OD28008-BSD1) Prepared&Analyzed:28-Apr-00 <br /> Lead 55.0 1.5 mg/kg 50.0 110 80-120 9.52 20 <br /> Matrix Spike(OD28008-MS1) Source: W004609-01 Prepared&Analyzed:28-Apr-00 <br /> .ILend 90.0 1.5 mg/kg 50.0 50 80.0 80-120 <br /> ! ,M- <br /> atrix Spike Dup (0D28008-MSD/) Source: W004609-01 Prepared&Analyzed:28-Apr-00 <br /> Lend 95,0 1,5 mg/kg 50.0 50' 90.0 80-120 5.41 20 <br /> h' <br /> i <br /> ! <br /> E. <br /> i <br /> 'Serluoia.Analytical-Walnut Creek The resLhs in this repoil apply to the samples analyzed in accordance with the chair of <br /> custody document. This analytical report must be reproduced in its entn•ety. <br /> I <br /> Page 12 of 14 <br /> `- I <br /> I: <br />