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GeoXnalytical Laboratories,'-Irnc. RECOVER <br />1405 Kansas Avenue Modesto, CA 95351 Phone (209) 572-0900 Fax (209) 572-0916 D E C 17 2003 <br />CERTIFICATE OF ANALYSIS ENVIRONMENT HEALTH <br />Report# P342-06 <br />Thorpe Oil <br />P <br />PO Box 357 <br />Lodi <br />Sample ID <br />Project: 2900 E Fremont St. - Stockton <br />CA 95241 PO# <br />Lab ID RL Method Analyte <br />DatRERNRT*%V10ES <br />Date Recd: 12/08/03 <br />Date Started: 12/11/03 <br />Date Completedd2/11/03 <br />Date Sampled: 12/08/03 <br />Sampler. R. Azevedo (Geo) <br />Res�tlfs Units <br />Stock Pile #1 - A <br />P202237 5.0 8021B <br />Benzene <br />ND <br />µg/Kg <br />5.0 <br />Toluene <br />ND <br />µg/Kg <br />5.0 <br />Ethyl Benzene <br />ND <br />µg/Kg <br />5.0 <br />Total Xylenes <br />µg/Kg <br />10 <br />Methyl tert -Butyl Ether <br />µg/Kg <br />1.0 5030/Luft <br />Gasoline <br />mg/Kg <br />Surrogate <br />Amnt Spiked <br />Amnt Rec. % R overy <br />QC Limit % <br />a,a,a-TFr <br />250 <br />227 90.80 <br />66-117 <br />Stock Pile # 1- B <br />P202238 5.0 8021B <br />Benzene <br />µg/Kg <br />5.0 <br />Toluene <br />ND <br />µg/Kg <br />5.0 <br />Ethyl Benzene <br />ND <br />µg/Kg <br />5.0 <br />Total Xylenes <br />ND <br />µg/Kg <br />10 <br />Methyl tert -Butyl Ether <br />µg/Kg <br />1.0 5030/Luft <br />Gasoline <br />mg/Kg <br />Surrogate <br />Amnt Spiked <br />Amnt Rec. %overy <br />QC Limit % <br />a,a,a-TFr <br />250 <br />216 86.40 <br />66-117 <br />Stock Pile #2 <br />P202239 5.0 8021B <br />Benzene <br />�D <br />I <br />µg/Kg <br />5.0 <br />Toluene <br />ND <br />µg/Kg <br />5.0 <br />Ethyl Benzene <br />µg/Kg <br />5.0 <br />Total Xylenes <br />µg/Kg <br />10 <br />Methyl tert -Butyl Ether <br />JND <br />µg/Kg <br />1.0 5030/Luft <br />Gasoline <br />mg/Kg <br />Surrogate <br />Amat Spiked <br />Amnt Rec. %ry <br />QC Limit % <br />a,a,a-TFT <br />250 <br />166 66.40 <br />66-117 <br />Mario D'Onofrio <br />Chemist <br />Certification # 1157 <br />Donna Keller <br />Laboratory Director <br />