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PRECISION <br /> ENVIRO-TECH <br /> Analytical Laboratory CERTIFICATE OFANALYSIS <br /> Tuesday,March 29, 2005 <br /> Attention Jack Bishop <br /> California Tank Lines Report Page 19 of 21 <br /> P O BOX 6245 <br /> Stockton, CA 95206 <br /> Total Petroleum Hydrocarbons-Gasohne- Quality Control <br /> Precision Enviro-Tech <br /> Reporting Spike Source %REC RPD <br /> byte Result Lmut flats Level Result %REC Lams RPD Lmut Notes <br /> Batch AC51509-Volatfles <br /> Blank(AC51509-BLKI) Prepared&Analyzed 15-Mar-05 <br /> TPH-Gasoline ND 100 ug/l <br /> Surrogate 4-Bromofluorobenzene 510 500 101 75-125 <br /> LCS(AC51509-BSI) Prepared&Analyzed 15-Mar-05 <br /> TPH-Gasoline 980 100 ugn 1000 98 75-125 <br /> Surrogate 4-Bromofluorobenzene 490 11 500 98 75-125 <br /> Matnr Spike(AC51509-MSI) Source 5031206-03 Prepared&Analyzed 15-Mar-05 <br /> TPH-Gasoline 955 100 ugll 1000 000 96 75-125 <br /> VY <br /> ate 4-Bromofluorobenzene 480 500 96 75-125 <br /> Spike Dup(AC51509-MSD1) Source 5031206-03 Prepared&Analyzed 15-Mar-05 <br /> TPH-Gasoline 940 100 ug/l 1000 000 94 75-125 2 20 <br /> Surrogate 4-Bromofluorobenzene 510 500 102 75-125 <br /> mg/L=milligrams perL+ter=ppm DLR=Defection Limit for Purpose ofReportmg <br /> ug/L=micrograms per Luer=ppb Exceptional sample matrices or interferences may <br /> result in higher detection lunits <br /> &PECTFULLY SUBMITTED, <br /> Ili Jonathan Le,Laboratory Director <br /> 7743 N West Lane Suite B2 Stockton CA 95210 phone (209) 477-8105 Fax (209) 477-8148 <br />