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GeoAnalytical Laboratories, Inca <br /> 1405 Kansas Avenue Modesto,CA 95351 Phone(209)572-0900 Fax(209)572-0916 <br /> Report# T7F2613 Project: Manteca Unified School Dist.Grounds Shop Date:07/03/07 <br /> M.J. Kloberdanz&Associates (MUSD) Date Rec'd: 06/26/07 <br /> P.O.Box 5769.81 PON <br /> Modesto,CA 95357 <br /> Volatile Organic Chemistry-Quality Control <br /> GeoAnalytical Laboratories, Inc. <br /> Reporting r Spike Source %REC RPD o <br /> LAnalyte Result Limit Units Level Result /oREC Limits RPD Limit Notes <br /> Batch T002122-EPA 5030B Prepared: 06/28/07 Analyzed: 07/02/07 <br /> LCS(T002122-BSI) <br /> Benzene 108 5.0 •ug/kg 100.0 108 80-120 <br /> Toluene 111 5.0 100.0 111 80-120 <br /> fEthylbenzene 114 5.0 100.0 114 80-120 <br /> Surrogate:a,a,u-Triuorotoluene 287 150.0 115 66-117 <br /> Matrix Spike(T002122-MSI) Source:T7F2613-01 <br /> Benzene 86.7 5.0 ug/kg 100.0 ND 87 53-101 <br /> Toluene 86.1 5.0 . 100.0 ND 86 48-109 <br /> Ethylbenzene 84.5 5.0 100.0 ND 84 45-107 <br /> Surrogate:a,a,a-Triuorotoluene 143 150.0 97 66-117 <br /> Matrix Spike Dup(T002122-MSDI) Source:T7F2613-01 <br /> Benzene 80.1 5.0 ug/kg 100.0 ND 80 53-101 8 20 <br /> Toluene 80.4 5.0 100.6 ND 80 48-109 7 24 <br /> Ethylbenzene 80.2 5.0 100.0 ND 80 45-107 5 33 <br /> Surrogate.'a.a.a-Tri luorotoluene 204 150.0 82 66-117 <br /> L <br /> L , <br /> irk _ <br /> Certification#2585 <br />