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404 N.Wiget Lane <br /> Sequoia Walnut Geek,CA 94598 <br /> 98 <br /> (925)988-960-9600 <br /> FAX(925)988-9673 <br /> Analytical wvvw,sequoialabs.com <br /> San Joaquin Company Inc. Project: 7500 W.l lth St.Steet Tracy <br /> 1120 Hollywood Ave.No.3 Project Number: 4 9902.012 Reported- <br /> Oakland CA.,94602 Project Manager: Dai Watkins 11-May-00 16:38 <br /> Diesel Hydrocarbons (C9-C24) by DHS LUFT - Quality Control <br /> Sequoia Analytical -Walnut Creek <br /> 1`. Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result s/uREC Limits RPD Limit Notes <br /> Patch OD25005-EPA 3510B <br /> -Blank(OD25005-BLK1) Prepared&Analyzed:25-Apr-00 <br /> Diesel Range Hydrocarbons ND 50 ug/l <br /> 12'Surrogate:n-Pentacosane 28.3 " 33.3 85.0 50-150 <br /> LCS(OD25005-BSI) Prepared&Analyzed:25-Apr-00 <br /> Diesel Range Hydrocarbons 352 50 ugll 500 70.4 60-140 <br /> .J$urrogaie:n-Pentacosone 37.3 " 33.3 112 50-150 <br /> LCS Dup(OD25005-BSD1) Prepared&Analyzed:25-Apr-00 <br /> Diesel Range Hydrocarbons 409 50 ug/1 500 81.8 60-140 15.0 50 <br /> Surrogate:n-Pentacosane 42.7 " 33.3 128 50-150 <br /> -Batch OD25024 -EPA 3550A <br /> f. i is_yic(OD25024-BLKI) Prepared:25-Apr-00 Analyzed:01-May-00 <br /> Diesel Range Hydrocarbons ND 1.0 mg/kg <br /> Surrogate:n-Pentacosane 2.28 1.22 103 50-150 <br /> -iCS(OD25024-BS1) Prepared:25-Apr-00 Analyzed:01-May-00 <br /> Diesel Range Hydrocarbons 19.3 1.0 mg/kg I5.0 129 60-140 <br /> Surrogate:nPentacosane 1.30 " 2.22 104 50-150 <br /> LCS Dup(OD25024-BSD1) Prepared:25-Apr-00 Analyzed:01-May-00 <br /> Aiesel Range Hydrocarbons 18.4 1.0 mg/kg 15.0 123 60-140 4.77 40 <br /> urrogate:n-Pentacasane 2.16 2.22 973 50-150 <br /> Batch OE01017-EPA 3550A <br /> i~ dank(OE01017-BLKl) Prepared:01-May-00 Analyzed:04-May-00 <br /> 'Diesel Range Hydrocarbons ND 1.0 mg/kg <br /> SraTogate:n Pentacosane 1.56 1.11 141 50-150 <br /> k <br /> i I <br /> -ioia Analytical-Walnut Creek The results in this report apply to the samples analyzed in accordance with the chain of <br /> tcustody document.This analytical report nrust be reproduced in its entirety. <br /> t <br /> Page 20 of 22 <br />