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PRECISION <br /> ENVIRO—TECH <br /> Analytical Laboratory CERTIFICATE OF ANALYSIS <br /> low Thursday,August 11, 2005 <br /> Attention Jack Bishop <br /> California Tank Lines Report Page 18 of 22 <br /> P 0 BOX 6245 <br /> Stockton, CA 95206 <br /> Volatile Organic Compounds by EPA Method 8260B-Quality Control <br /> Precision Envlro-Tech <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch AF52811-Volatiles <br /> I <br /> Blank(AF52811-BLKI) Prepared&Analyzed 28-Jun-05 <br /> tert-Butyl Acohol(TBA) ND 500 ug/l <br /> Methyl tert-butyl Ether(MtBE) ND 0 500 " <br /> Dnsopropyl Ether(DIPE) ND 0 500 <br /> Ethyl tert-Butyl Ether(ETBE) ND 0 500 " <br /> tent-Amyl Methyl Ether(TAME) ND 0 500 " <br /> 1,2-Dibromoethane(EDB) ND 0 500 " <br /> 1,2-Dichloroethane ND 0 500 " <br /> Benzene ND 0 500 " <br /> Ethylbenzene ND 0 500 " <br /> Toluene ND 0 500 " <br /> WXytcne ND 0 500 <br /> ylene ND 0 500 <br /> LCS(AF52811-BSI) Prepared&Analyzed 28-Jun-05 <br /> tert-Butyl Acohol(TBA) 83 2 Soo ugll 100 83 75-122 <br /> Methyl tert-butyl Ether(MtBE) 420 0 500 400 105 75-122 <br /> Dnsopropyl Ether(DIPE) 216 0 500 " 200 108 75-122 <br /> Ethyl tert-Butyl Ether(ETBE) 220 0 500 200 110 75-122 <br /> tert-Amyl Methyl Ether(TAME) 222 0 500 " 200 111 75-122 <br /> 1,2-Dibromoethane(EDB) 208 0 500 200 104 75-122 <br /> 1,2-Dichloroethane 184 0 500 200 92 75-122 <br /> Benzene 242 0 500 200 121 75-122 <br /> Ethylbenzene 23 1 0 500 200 116 75-122 <br /> Toluene 222 0 500 200 111 75-122 <br /> in p-Xylene 462 0 500 400 116 75-122 <br /> o-Xylene 232 0 500 200 116 75-122 <br /> Matnx Spike(AF52811-MSI) Source 5062506-03 Prepared&Analyzed 28-Jun-05 <br /> tert-Butyl Acohol(TBA) 810 500 ug/l 100 ND 81 75-122 <br /> Methyl tert-butyl Ether(MtBE) 415 0 500 400 ND 104 75-122 <br /> Diisopropyl Ether(DIPE) 196 0 500 200 ND 98 75-122 <br /> Ethyl tent-Butyl Ether(ETBE) 215 0 500 200 ND 108 75-122 <br /> tert-Amyl Methyi Ether(TAME) 215 0 500 200 ND 108 75-122 <br /> 1,2-Dibromoethane(EDB) 20 7 0 500 " 200 ND 104 75-122 <br /> mg1L=milligrams per Liter=ppm DLR=Detection Lrmtr forPurpose of Reporting <br /> ug/L=micrograms per Liter—ppb Exceptional sample matrices or rmerferences may <br /> result in higher detection limits <br /> RESPECTFULLY SUBMITTED, <br /> 40(��/Oxlz� <br /> Jonathan Le,Laboratory Director <br /> 7743 N West Lane Suite B2 Stockton CA 95210 phone (209) 477-8105 Fax 12091 477-8148 <br /> 61166 <br />