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PRECISION <br /> ENVIRO-TECH <br /> Analytical Laboratory <br /> CERTIFICATE OF ANAL YSIS <br /> Thursday,August 11, 2005 <br /> Attention Jack Bishop <br /> California Tank Lines Report Page 10of22 <br /> P O BOX 6245 <br /> Stockton, CA 95206 <br /> Volatile Organic Compounds by EPA Method 82608 <br /> Sample Information <br /> Sample ID• MW-3 Sample Type* Grab <br /> Laboratory ID: 5062506-03 Project Name: QM Q2 2005 <br /> Dale.Mme Sampled. 24-Jun-05 12 10 by D Sorenson Sample Matrix. Ground Water-Non Potable <br /> Test Parameter Result DLR Unit Dilution Batch Prepared Analysts Date Method Notes <br /> lert-Butyl Acohol(CBA) NO 500 ugA 1 AF52811 28-Jun-05 28-Jun-05 EPA 8260B <br /> Methyl tert-butyl Ether(MtBE) ND 0 500 ugA 1 AF52811 28-Jun-05 28-Jun-05 EPA 8260B <br /> Dnsopropyl Ether(DIPE) NO 0 500 ugA 1 AF52811 28-Jun-05 28-Jun-05 EPA 8260B <br /> Ethyl tert-Butyl Ether(ETBE) ND 0 500 ugA 1 AF52811 28-Jun-05 28-Jun-05 EPA 8260B <br /> tert-Amyl Methyl Ether(TAME) NO 0 500 ugA 1 AF52811 28-Jun-05 28-Jun-05 EPA 8260B <br /> 1 2-Dtbromoethane(EDS) ND 0 500 ugA 1 AF52811 28-Jun-05 28-Jun-05 EPA 8260B <br /> 1,2-Dlchloroethane NO 0 500 ugA 1 AF52811 28-Jun-05 28-Jun-05 EPA 8260E <br /> Benzene NO 0 500 ugA 1 AF52811 28-Jun-05 28-Jun-05 EPA 8260E <br /> Ethylbenzene NO 0 500 ugA 1 AF52811 28-Jun-05 28-Jun-05 EPA 8260B <br /> luene NO 0 500 ugA 1 AF52811 28-Jun-05 28-Jun-05 EPA 8260B <br /> 77H-Xylene NO 0 500 ugA 1 AF52811 28-Jun-05 28-Jun-05 EPA 8260B <br /> o-Xylene NO 0 500 ugA 1 AF52811 28-Jun-05 28-Jun-05 EPA 82606 <br /> Surrogate Toluene-d8 100% 70-125 <br /> Surrogate Dlbromothioromethane 91% 70-125 <br /> Surrogate 4-Bromoftriorobenzene 94% 70-125 <br /> mg1L=milligrams per Liter=ppm DLR=Detection Lmntfor Purpose ofReporring <br /> ug/L=micrograms per Luer—ppb Exceptional sample matrices or interferences may <br /> result in higher defection limits <br /> RESPECTFULLY SUBMITTED, <br /> I <br /> Jonathan Le,Laboratory Director <br /> 7 743 N West Lane Suite B2 Stockton CA 95210 nhone (209) 477-8105 Fax (209) 477-8148 <br /> 53166 <br />