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i PRECISION <br /> ENVIRO-TECH <br /> Analytical Laboratory CERTIFICATE OFANAL YSIS <br /> Fraday, October 29, 2004 <br /> IAttention Guy Roy <br /> California Tank Lines Report Page 14of22 <br /> P O BOX 6245 <br /> Stockton, CA 95206 <br /> Volatile Organic Compounds by EPA Method 82606 <br /> Sample Information <br /> Sample ID- MW-4 Sample Type: Grab <br /> ' Laboratory ID. 4092310-04 Protect Name: QM Q3 2004 <br /> Datelhme Sampled• 22-Sep-04 13 45 by D Sorenson Sample Matrix. Ground Water-Non Potable <br /> Test Parameter Result DLR Unit Dilution Batch Prepared Analysts Date Method Notes <br /> tert-Butyl Acohol(TBA) 259 500 ug/1 1 AI43013 30-Sep-04 01-Oct-04 EPA 82608 <br /> Methyl tert-butyl Ether(MtBE) NO 0 500 ugA 1 A143013 30-Sep-04 01-Oct-04 EPA 82608 <br /> Dusopropyl Ether(RIPE) 1800 0 500 ug/1 1 AI43013 30-Sep-04 01-Oct-04 EPA 82608 <br /> Ethyl tert-Butyl Ether(ETRE) NO 0 500 ugli 1 AI43013 30-Sep-04 01-Oct-04 EPA 8260B <br /> tert-Amyl Methyl Ether(TAME) NO 0 500 ug/1 1 A143013 30-Sep-04 01-Oct-04 EPA 8260B <br /> 1,2-Dibromoethane(EDB) ND 0 500 Ug/1 1 A143013 30-Sep-04 01-Oct-04 EPA 82606 <br /> 1,2-Dichloroethane 283 0 500 ug/1 1 A143013 30-Sep-04 01-Oct-04 EPA 8260B <br /> Benzene 2050 0 500 ug/1 1 A143013 30-Sep-04 01-Oct-04 EPA 8260B <br /> (benzene 1130 0 500 ug/1 1 A143013 30-Sep-04 01-Oct-04 EPA 8260B <br /> ne 2060 0 500 ug/1 1 A143013 30-Sep-04 01-Oct-04 EPA 82606 <br /> M p-Xylene 4060 1 00 ug/1 2 A143013 30-Sep-04 01-Oct-04 EPA 82608 <br /> o-Xylene 2060 0 500 ug/1 1 A143013 30-Sep-04 01-Oct-04 EPA 82608 <br /> Surrogate Toluene-0 99% 70-125 <br /> Surrogate Dibromofluoromethane 95% 70-125 <br /> Surrogate 4-Bromofluorobenzene 115% 70-125 <br /> mg/L—milligrams per Liter=ppm DLR=Detection Luno for Purpose of Reportmg <br /> ug/L=micrograms per Liter=ppb Exceptional sample matrices or interferences may <br /> result in higher detection limits <br /> 4vECTFULLY SUBMITTED, <br /> 7:7/'01.� <br /> Jonathan Le,Laboratory Director <br /> 7743 N West Lane Suite B2 Stockton CA 95210 vhone (209) 477-8105 Fax (209) 477-8148 <br />