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PRECISIONO, <br /> ENVIRO-TECH <br /> Analytical Laboratory CERTIFICATE OFANALYSIS <br /> T Tuesday,March 13, 2007 <br /> Attention: Guy W.Roy <br /> R&L Diesel Report Page 21 of 23 <br /> P.O.Box 2498 g <br /> a <br /> Danville, CA 94526 <br /> Total Petroleum Hydrocarbons-Gas line- Quality Control <br /> Precision Enviro- ech <br /> Reporting Sp ke Source %REC RPD <br /> Analyte Result Limit Units Le Vel Result %REC Limits RPD Limit Notes <br /> Batch AC70601 -EPA 5030 Soil MS i <br /> Blank(AC70601-BLKI) Prepared&Analyzed:06-Mar-07 <br /> TPH-Gasoline ND 200 ugfAg <br /> Surrogate,4-Bromofluorobenzene 52.0 5(.O 104 75-125 - <br /> LCS(AC70601-BSI) Prepared&Analyzed: 06-Mar-07 <br /> TP.H-Gasoline 2480 200 ug/kg 2500 99 75-125 <br /> Surrogate:4-Bromofluorobenzene 55.0 5 .0 110 75-125 <br /> Matrix Spike(AC70601-MS1) Source:7022608-01 Prepared&Analyzed:06-Mar-07 <br /> TPH-Gasoline 2550 200 ug/kg 2500 0.00 102 75-125 <br /> Surrogate:4-Bromofluorobenzene 51.0 50.0 102 75-125 <br /> Matrix Spike Dup(AC70601-MSD1) Source:7022608-01 Prepared&Analyzed:06-Mar-07 <br /> TPH-Gasoline 2530 200 ug/kg 25DO 0.00 101 75-125 0.8 20 <br /> Surrogate:4-Bromofluorobenzene 57.0 5 .0 114 75-125 <br /> mg1L milligrams per Liter—ppm DLR=Detection Limit for Purpose of Reporting. <br /> uglL=micrograms per Liter=ppb Exceptional sample matrices or interferences may <br /> result in higher detection limits. <br /> RESPECTFULLY SUBMITTED, <br /> Jonathan Le,Laboratory Director <br /> 3935 N. Coronado Ave Stockton CA. 95204 phone: (209) 47 -8105 Fax: (209) 477-8148 <br />