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GeoAnalytical Laboratories, Inc. <br /> ! 1405 Kansas Avenue Modesto, CA 95351 Phone (209) 572-0900 Fax (209) 572-0916 <br /> CERTIFICATE OF ANALYSIS <br /> Report# N100-11 BTEX &.'Gas Date: 4/19/02 <br /> Thorpe Oil Date Recd: 4/10/02 <br /> P Project: Stockton Fire Station-Sonora St. Date Started- 4/15/02 <br /> PO Box 357 Date Completed:4/15/02 <br /> Lodi CA 95241 PO# A <br /> Date Sampled: 4/10/02 <br /> Sampler: R.Chrun/R.Azevedo <br /> lik Sample ID Lab ID RL Method Analyte Results Units <br /> Soil Sample#3 Middle @4' N200877 5.0 8021B Benzene ND pg/Kg <br /> 5.0 Toluene ND log/Kg <br /> 5.0 Ethyl Benzene ND pg/Kg <br /> j 5.0 Total Xylenes ND pg/Kg <br /> 1.0 5030/LUFT Gasoline ND n-g/Kg <br /> I I <br /> Surrogate Arent Spiked Amnt Rec. %Recovery QC Limit% <br /> a,a,a-TFT 250 243 97.2 66-117 i <br /> j <br /> i Soil Sample#4 South@4' N200878 5.0 8021B Benzene ND pg/Kg <br /> 5.0 Toluene ND pg/Kg <br /> F 5.0 Ethyl Benzene ND pg/Kg <br /> 5.0 Total Xylenes ND pg/Kg <br /> 1.0 5030/LUFT Gasoline ND mg/Kg <br /> t Surrogate Amnt Spiked Amnt Rec. %Recovery QC Limit% <br /> a,a,a-TFT 250 245 98 66-117 <br /> 4 <br /> Soil Sample#5 South@4' N200879 5.0 8021B Benzene ND pg/Kg <br /> 5.0 Toluene ND pg/Kg <br />' 5.0 Ethyl Benzene ND pg/Kg <br /> 5.0 Total Xylenes ND pg/Kg <br /> 1.0 5030/LUFT Gasoline ND mg/Kg <br /> Surrogate Amnt Spiked Amnt Rec %Recovery QC Limit% <br /> a,a,a-TFT 250 239 95.6 66-117 <br /> Mario D'Onofro Donna Keller <br /> Chemist Certification # 1157 Laboratory Director <br /> i <br />