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PRECISION <br /> ENVIRO-TECH <br /> Analytical Laboratory CERTIFICATE OF ANALYSIS <br /> Tuesday,March 29, 2005 <br /> Attention• Jack Bishop <br /> California Tank Lines Report Page 17 of 21 <br /> P O BOX 6245 <br /> Stockton, CA 95206 <br /> Volatde Organic Compounds by EPA Method 8260B-Quality Control <br /> Precision Enviro-Tech <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch AC51507-Volatiles <br /> Blank(AC51507-BLKI) Prepared 15-Mar-05 Analyzed 16-Mar-05 <br /> tert-Butyl Acohol(TBA) ND 500 ugA <br /> Methyl tert-butyl Ether(MtBE) ND 0 500 " <br /> Dusopropyl Ether(DIPE) ND 0 500 " <br /> Ethyl tert-Butyl Ether(ETRE) ND 0 500 " <br /> tent-Amyl Methyl Ether(TAME) ND 0 500 <br /> 1,2-Dibromoethane(EDB) ND 0 500 " <br /> 1,2-Dlchloroethane ND 0 500 " <br /> Benzene ND 0 500 <br /> Ethylbenzene ND 0 500 " <br /> Toluene ND 0 500 " <br /> Xylene ND 0 500 " <br /> lene ND 0 500 " <br /> LCS(AC51507-BSI) Prepared 15-Mar-OS Analyzed 16-Mar-05 <br /> tert-Butyl Acohol(TBA) 110 500 ug/1 100 110 75-122 <br /> Methyl tert-butyl Ether(MtBE) 21 9 0 500 200 110 75-122 <br /> Dusopropyl Ether(RIPE) 21 9 0 500 " 200 110 75-122 <br /> Ethyl tent-Butyl Ether(ETBE) 219 0 500 *' 200 110 75-122 <br /> tert-Amyl Methyl Ether(TAME) 186 0 500 200 93 75-122 <br /> Benzene 243 0 500 200 122 75-122 <br /> Ethylbenzene 220 0 500 200 110 75-122 <br /> Toluene 230 0 500 200 115 75-122 <br /> in p-Xylene 429 0 500 400 107 75-122 <br /> o-Xylene 21 8 0 500 200 109 75-122 <br /> Matnx Spike(AC5I507-MSI) Source 5031206-01 Prepared 15-Mar-05 Analyzed 16-Mar-05 <br /> tert-Butyl Acohol(TBA) 110 500 ug/l 100 ND 110 75-122 <br /> Methyl tert-butyl Ether(MtBE) 187 0 500 200 ND 94 75-122 <br /> Dusopropyi Ether(RIPE) 171 0 500 200 ND 86 75-122 <br /> Ethyl tent-Butyl Ether(ETRE) 189 0 500 200 ND 94 75-122 <br /> tert-Amyl Methyl Ether(TAME) 172 0 500 200 ND 86 75-122 <br /> Benzene 22 1 0 500 200 ND 110 75-122 <br /> Ethylbenzene 22 0 0 500 n 200 ND 110 75-122 <br /> Toluene 230 0 500 200 ND 115 75-122 <br /> mg/L=milligrams perLiter—ppm DLA=Detection Limit for Purpose ofReportmg <br /> ug/L=m1crogmms per Luer=ppb Exceptional sample matrices or interferences may <br /> result m higher defection limits <br /> Jonathan <br /> SUBMITTED, <br /> Jonathan Le,Laboratory Director <br /> 7743 N West Lane Suite B2 Stockton CA 95210 phone (209) 477-8105 Fax (209) 477-8148 <br /> I <br />