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PRECISION <br /> ENVIRO-TECH <br /> Analytical Laboratory CERTIFICATE OF ANALYSIS <br /> Thursday,August 11, 2005 <br /> Attention Jack Bishop <br /> California Tank Lines Report Page 14 of 12 <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: 5062506-04 Project Name: QM Q2 2005 <br /> DatelTime Sampled. 24-Jun-05 12 35 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) ND 500 ugA 1 AF52811 28-Jun-05 28-Jun-05 EPA 82606 <br /> Methyl tert-butyl Ether(MtSE) ND 0 500 ugA 1 AF52811 28-Jun-05 28-Jun-05 EPA 82608 <br /> Dnsopropyl Ether(DIPE) 604 0 500 ug/1 1 AF52811 28-Jun-05 28-Jun-05 EPA 8260B <br /> Ethyl tent-Butyl Ether(ETBE) ND 0 500 ugA 1 AF52811 28-Jun-05 28-Jun-05 EPA 82608 <br /> tert-Amyl Methyl Ether(TAME) ND 0 500 ugA 1 AF52811 28-Jun-05 28-Jun-05 EPA 8260B <br /> 1 2-Dibromoethane(EDB) 0 990 0 500 ugA 1 AF52811 28-Jun-05 28-Jun-05 EPA 8260B <br /> 1 2-Dichloroethane 689 0 500 ugA 1 AF52811 28-Jun-05 28-Jun-05 EPA 8260B <br /> Benzene 1710 - 0 500 ugll 1 AF52811 28-Jun-05 28-Jun-06 EPA 82608 <br /> Ethylbenzene 1180 0 500 ugA 1 AF52811 28-Jun-05 28-Jun-05 EPA 8260B <br /> oluene 3280 — 0 500 ugA 1 AF52811 28-Jun-05 28-Jun-05 EPA 8260B <br /> m,p-Xylene 4040 - 0 500 ugA 1 AF52811 28-Jun-05 28-Jun-05 EPA 6260B <br /> o-Xylene 2650 0 500 ugA 1 AF52811 28-Jun-05 28-Jun-05 EPA 8260B <br /> Surrogate Toluene-d8 103% 70-125 <br /> Surrogate Dtbromofluommethane 92% 70-125 <br /> Surrogate 4-Bromofluorobenzene 101% 70-125 <br /> mg11 =mrlhgrams per Liner=ppm DLR=Derectron Lrmrt forPurpose of Reponrng <br /> ag1L—micrograms per Liter=ppb Exceptional sample matrices or interferences may <br /> result in higher detection limits <br /> RESPECTFULLY SUBMIT'T'ED, <br /> 0 (�:7/Ow� <br /> Jonathan Le,Laboratory Director <br /> 77,43 A rest Lane State B2 Stockton CA 9.5210 171tone (209) 477-8105 Fax (209) 477-8148 <br /> 57166 <br />