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Geotnal tical Laboratoriestc. <br /> 1405 Kansas Avenue Modesto,CA 95351 Phone (209)572-0900 Fax{209) 572-0916 <br /> CERTIFICATE OF ANALYSIS <br /> Report# M333-31 BTEX Date 12/05/01 <br /> 1 <br /> M J Kloberdanz & Associates Project: MUSD Date Rec'd 11/29/01 <br /> P O Box 576981 Date Started 11130101 <br /> Modesto CA 95357 PO# Date Completed 12/03/01 <br /> Date Sampled 11/29/01 <br /> ' Sampler MJ Kloberdanz <br /> Sample ID Lab ID RL Method Analyte Results Units <br /> ' MW-3-15' M203760 5 0 8021B Benzene ND pg/Kg <br /> 50 Toluene ND pg/Kg <br /> 50 Ethyl Benzene ND pg/Kg <br /> 50 Total Xylenes ND pg/Kg <br /> ' Surrogate Amnt Spiked Amnt Rec % Recovery QC Limit % <br /> a,a,a-TFT 250 176 70 4 66-117 <br /> 1 <br /> tiMW-3-20' M203761 5 0 8021B Benzene ND pg/Kg <br /> 5 0 Toluene ND <br /> pg/Kg � <br /> 5 0 Ethyl Benzene ND pg/Kg <br /> ' 5 0 Total Xylenes ND pg/Kg <br /> Surrogate Amnt Spiked Amnt Rec % Recovery QC Limit % <br /> a,a,a-TFT 250 204 816 66-117 <br /> 1 <br /> ' MW-3-30' M203762 50 8021B Benzene ND pg/Kg <br /> 50 Toluene ND pg/Kg <br /> 50 Ethyl Benzene ND pg/Kg <br /> ' 50 Total Xylenes ND pg/Kg <br /> ' Surrogate Amnt Spiked Aznnt Rec % Recovery QC Limit % <br /> a,a,a-TFT 250 187 748 66-117 <br /> • <br /> 1 , <br /> Mario D'Onofrio Donna Keller <br /> ' Chemist Certification # 1157 Laboratory Director <br />