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1 PRECISION <br /> ENVIRO-TECH <br /> Analytical Laboratory CERTIFICATE OFANALYSIS <br /> Friday, October 29, 2004 <br /> t Attention• Guy Roy <br /> California Tank Lines <br /> Report Page 6of22 <br /> P O BOX 6245 <br /> 1 Stockton, CA 95206 <br /> I <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sample Information <br /> Sample ID: MW-2 Sample Type: Grab <br /> Laboratory ID. 4092310-02 Project Name. QM Q3 2004 <br /> DatelTtme Sampled. 22-Sep-04 13 30 by D Sorenson Sample Matrix. Ground Water-Non Potable <br /> 1 Test Parameter Result DLR Unit Dilution Batch f rff ared Analysts Date Method Notes <br /> tert-Butyl MOM(TBA) 801 t 500 ugli 1 A143013 30-Sep-04 01-Oct-04 EPA 8260B <br /> Methyl tert-butyl Ether(MtBE) ND - 0 500 ugll 1 A143013 30-Sep-04 01-Oct-04 EPA 8260B <br /> Dusopropyl Ether(DIPE) <br /> 110 0 500 ug/1 1 A143013 30-Sep-04 01-Oct-04 EPA 8260B <br /> ' Ethyl tent-Butyl Ether(ETBE) NO 0 500 ugll 1 AI43013 30-Sep-04 01-Oct-04 EPA 8260B <br /> tert-Amyl Methyl Ether(TAME) ND f 0-500 ug/1 1 A143013 30-Sep-04 01-Oct-04 EPA 8260B <br /> 1 2-DLbromoethane(EDB) ND - 0 500 ug/1 1 AI43013 30-Sep-04 01-Oct-04 EPA 8260B <br /> 1,2-Dichloroethane 249 0 500 ug/1 1 A143013 30-Sep-04 01-Oct-04 EPA 8260B <br /> Benzene 3 94 of 0 500 ug/1 1 A143013 30-Sep-04 01-Oct-04 EPA 82606 <br /> (benzene 247 - 0 500 ug/1 1 A143013 30-Sep-04 01-Oct-04 EPA 82608 <br /> ne 183 0 500 u911 1 A143013 30-Sep-04 01-Oct-04 EPA 82606 <br /> m,p-Xylene 3 26 100 ugll 2 A143013 30-Sep-04 01-Oct-04 EPA 8260B <br /> o-Xylene 5 83 0 500 ugll 1 A143013 30-Sep-04 01-Oct-04 EPA 82608 <br /> Surrogate Toluene-d8 100% 70-125 <br /> Surrogate Dlbromotluoromethane 101 % 70-125 <br /> Surrogate 4-BromoRuorobenzene 102% 70-125 <br /> 1 <br /> mylL=milligrams per Luer—ppm DLR=Detection Limit for Purpose of Reportmg <br /> ug/L—micrograms per Liter=ppb Exceptional sample matrices or interferences may <br /> 1 result in higher detection limns <br /> �ECTFULLY SUBMITTED, <br /> 75/OLA� <br /> Jonathan Le,Laboratory Director <br /> ' 7743 N West Lane Suite B2 Stockton CA 95210 phone (209) 477-8105 Fax (209) 477-8148 <br />