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PRECISION <br /> EATWRO-TECH <br /> Analytical Laboratory CERTIFICATE OF ANALYSIS <br /> Sunday,August 29, 1004 <br /> Attention Guy Roy <br /> California Tank Lines Report Page 11 of 17 <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- 0402161-04 Project Name: QM Q2 2004 <br /> DatelTime Sampled: 16-Jun-04 13 34 by D Sorenson Sample Matrix: Ground Water-Non Potable <br /> Test Parameter Result DLR Unit Dilution Batch Prepared Analysis Date Method Notes <br /> tert-Butyl Acohol(TBA) NO 500 u911 1 AG42003 21-Jun-04 22-Jun-04 EPA 8260B <br /> Methyl-tert-butyl-Ether(MtBE) NO 1 00 ugll 1 AG42003 21-Jun-04 22-Jun-04 ERA 82606 <br /> Dusopropyl Ether(DIPE) 822 100 ug/1 1 AG42003 21-Jun-04 22-Jun-04 EPA 8260E <br /> Ethyl tert-Butyl Ether(ETBE) NO 1 00 ugll 1 AG42003 21-Jun-04 22-Jun-04 EPA 8260B <br /> Cert-Amyl Methyl Ether(TAME) NO 100 ug11 1 AG42003 21-Jun-04 22-Jun-04 EPA 8260B <br /> 1,2-Dibromoethane(EDB) 436 100 ugl[ 1 AG42003 21-Jun-04 22-Jun-04 EPA 82608 <br /> 1 2-Dichloroethane 315 100 ug/1 i AG42003 21-Jun-04 22-Jun-04 EPA 8260B <br /> Benzene 2970 100 ugll 1 AG42003 21-Jun-04 22-Jun-04 EPA 8260B <br /> ITPH-Gasoline <br /> benzene 2090 100 ugll 1 AG42003 21-Ain-04 22-Jun-04 EPA 8260B <br /> ' ene 4110 1 00 Ug/1 1 AG42003 21-Jun-04 22-Jun-04 EPA 8260B <br /> Xylene 7400 1 00 ug/1 1 AG42003 21-Jun-04 22-Jun-04 EPA 8250B <br /> lene 3280 1 00 ugll 1 AG42003 21-Jun-04 22-Jun-04 EPA 82608 <br /> ' 6600 100 ugll 1 AG42003 21-Jun-04 22-Jun-04 EPA 82606 <br /> Surrogate 4-Bromoftuorobenzene 90% 86-115 <br /> 1 <br /> 1 <br /> mg1L=milligrams per Liter=ppm DLR=Detection Limit for Purpose of Reporting <br /> ug/L—micrograms per Liter=ppb acepi[onal sample matrices or interferences may <br /> ' resu!t in higher detection limits <br /> 0PECTFULLY SUBMITTED, <br /> Jonathan Le,Laboratory Director <br /> CA 9321 D phone 1209) 477-8105 Fax 1209? 477-8148 <br /> 7743 N West Lane Suite B2 Stockton <br />