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PRECISION <br /> ENVIRO-TECH <br /> Analytical Laboratory CERTIFICATE OF ANALYSIS <br /> Fnday, October 29, 2004 <br /> Attention. Guy Roy <br /> California Tank Lines Report Page 11 of 12 <br /> P 0 BOX 6245 <br /> Stockton, CA 95206 <br /> Total Petroleum Hydrocarbons-Diesel Range-Quality Control <br /> Precision Enviro-Tech <br /> Reporting Spike Source %RFC RPD <br /> Analyte Result Lunt Units Level Result %REC Limits RPD Lunmt Notes <br /> Batch AJ42915-Volatiles <br /> Blank(AJ42915-BLK1) Prepared 01-Oct-04 Analyzed 29-Oct-04 <br /> TPH-Diesel ND 100 ug/I <br /> LCS(AJ42915-BSI) Prepared 01-Oct-04 Analyzed 29-Oct-04 <br /> TPH-Diesel 480 100 ug/1 500 96 75-125 <br /> Matrix Spike(AJ42915-MS1) Source 4092310-03 Prepared 01-Oct-04 Analyzed 29-Oct-04 <br /> TPH-Diesel 510 100 ug/l 500 000 102 75-125 <br /> Matrix Spike Dup(AJ42915-MSD1) Source 4092310-03 Prepared 01-Oct-04 Analyzed 29-Oct-04 <br /> TPH-Diesel 515 100 119/1 500 000 103 75-125 1 20 <br /> i <br /> I <br /> mg/L—milligrams per Liter=ppm DLR=Detection Ltmt for Purpose of Reporting <br /> ug/L=mecrograms perLtter=ppb Exceptional sample matrices or interferences may <br /> result in higher detection limits <br /> JWECTFULLY SUBMITTED, <br /> tJonathan It Laboratory Director <br /> 7743 N West Lane Suite B2 Stockton CA 95210 phone (209) 477-8105 Fax (209) 477-8148 <br />