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x <br /> GeoAnalytical Laboratories, Inc. <br /> 1405 Kansas Avenue Modesto,CA 95351 . Phone(209)572-0900 Fax(209)572-0916 <br /> Report# T71F2613 Project: Manteca Unified School Dist.Grounds Shop Date:07/03/07 <br /> M.J.Kloberdanz&Associates (MUSD) Date Recd:06/26/07 <br /> P.O. Box 576981 PO# <br /> Modesto,CA 95357 <br /> CERTIFICATE OF ANALYSIS Date Sampled: 06/26/07 <br /> LSampler: Mike Kloberdanz <br /> Sample ID Time: Lab ID RL Method Analyte Result Units Notes Analvzed Batch tl <br /> B-4-8' 9:15 T71`2613-01 5.0 8021B Benzenc ND ug/kg 06/28/07 T002122 <br /> 5.0 Ethylbenzene ND <br /> 5.0 Toluene ND <br /> 5.0 Xylenes,total ND <br /> Surrogate Amnt Spiked Amnt Recovered %Recovery QC Limit% Surrogate Notes <br /> a,a,a•Trifluorotoluene 250.0 188 75% 66-117 <br /> B-4-16' 9:30 T71`2613-02 5.0 8021B Benzene ND ug/kg 06/28/07 T002122 <br /> 5.0 Ethylbenzene ND <br /> 5.0 Toluene ND <br /> 5.0 Xylenes,total ND <br /> Surrogate Amnt Spiked Amnt Recovered %Recovery QC Limit% Surrogate Notes <br /> a,a,a-Trifluorotoluene 250.0 195 78% 66-117 <br /> B4-24' 10:00 T7F2613-03 5.0 8021B Benzene ND ug/kg 06/29/07 T002122 <br /> 5.0 Ethylbenzene ND, <br /> 5.0 Toluene ND <br /> 5.0 Xylenes,total ND <br /> Surrogate Amnt Spiked Amnt Recovered %Recovery QC Limit% Surrogate Notes <br /> a,a,a-Trifluorotoiuene 250.0 184 74% 66-117 <br /> B-4-28' 10:20 T7172613-04 5.0 8021B Benzene ND ug/kg 06/28/07 T002122 <br /> 5.0 Ethylbenzene ND <br /> 5.0 Toluene ND <br /> 5.0 Xylenes,total ND <br /> Surrogate Amnt Spiked Amnt Recovered %Recovery QC Limit% Surrogate Notes <br /> a,a,a-Trifluorotoluene 250.0 207 83% 66-117 <br /> B-4-32' 10:45 T71`2613-05 5.0 8021B Benzene ND ug/kg 06/28/07 T002122 <br /> 5.0 Ethylbenzene ND <br /> 5.0 Toluene ND <br /> 5.0 Xylenes,total ND <br /> Surrogate Amnt Spiked Am at Recovered %Recovery QC Limit% Surrogate Notes <br /> a,a,a-Trifluorotoluene 250.0 223 89% 66-117 <br /> B-4-36' 11:20 T71`2613-06 5.0 80218 Benzene ND ug/kg 06/28/07 T002122 <br /> E.f 5.0 Ethylbenzene ND <br /> 5.0 Toluene ND <br /> 5.0 Xylenes,total ND <br /> Surrogate- Amnt Spiked Amnt Recovered %Recovery QC Limit% Surrogate Notes <br /> a,a,a-Trifluorotoluene 250.0 218. 87% 66-117 <br /> Certification#2585 <br />