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GeoAnalytical Laboratories, Inc. <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 Recd:06/26/07 <br /> P.O.Box 576981 PO# <br /> j - Modesto,CA 95357 <br /> �+ CERTIFICATE OF ANALYSIS Date Sampled: 06/26/07 <br /> ` Sampler: Mike Kloberdanz <br /> �+ Sample ID Time: Lab ID RL Method Analyte Result Units Notes Analyzed Batch# <br /> B-4-30'H20 .11:40 T7F2613-07 0.3 8021 B Benzene ND ug/L 06/28/07 T002121 <br /> 0.3 Ethylbenzene ND <br /> 0,3 Toluene ND <br /> 0.6 Xylenes,total ND <br /> Surrogate Amnt Spiked Amnt Recovered %Recovery QC Limit% Surrogate Notes <br /> a,a,a-Trifluorotoluene 25.0 19.0 76% 70-115 <br /> 12:45 T7F2613-08 5.0 8021E Benzene l ND ug/kg 06/28/07 T002122 <br /> 5.0 Ethylbenzene ND <br /> 5.0 Toluene ND <br /> 5.0 Xylenes,total NO <br /> Surrogate Amnt Spiked Amnt Recovered %Recovery QC Limit% Surrogate Notes <br /> a a,a-Trifluorotoluene 250.0 191 76% 66-117 <br /> B-5-16' 13:00 T7F2613-09 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 Amot Recovered %Recovery QC Limit% Surrogate Notes <br /> a,a,a-Trifluorotoluene 250.0 213 85% 66-117 <br /> B-5-24' 13:35 T7F2613-10 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 250.0 212 85% 66-117 <br /> B-5-28' 14:00 T7F2613-11 5.0 802IB 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 /> L Surrogate Amnt Spiked Amnt Recovered %o Recovery QC Limit% Surrogate Notes <br /> a,a,a-Trifluorotoluene 250.0 217 87% 66-117 <br /> L B-5-28'H20 14:06 T7F2613-12 0.3 8021E Benzene ND ug/L 06/28/07 T002121 <br /> 0.3 Ethylbenzene ND <br /> 0.3 Toluene ND <br /> 0.6 Xylenes,total- ND <br /> Surrogate Amnt Spiked Amnt Recovered %Recovery QC Limit% Surrogate Notes <br /> a,a,a-Trifluorotoluene 25.0 21.9 88% 70-115 <br /> i <br /> Certification•#2585 <br /> i <br /> I <br />