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Ii <br /> . .,RECISION <br /> ENVIEO-TECH <br /> Analytical Laboratory CERTIFICATE OFANAL YSIS <br /> Tuesday,March 13, 2007 <br /> Attention: Guy W.Roy <br /> R&L Diesel Report Page 16 of 23 <br /> P.O.Box 2498 <br /> Danville, CA 94526 <br /> Metals by EPA 6000/7000 Series Met iods- Quality Control <br /> Precision Enviro- ech <br /> Reporting Sp ke Source %REC RPD <br /> Analyte Result Limit Units LC Vol Result %REC Limits RPD Limit Notes <br /> Batch AC70504-General Pre <br /> LCS(AC70504-BSI) Prep ired&Analyzed:05-Mar-07 <br /> Matrix Spike(AC70504-MS1) Source:7022608-02 Prepared&AnaIyzcd:05-Mar-07 _ <br /> Arsenic 51.0 0.500 mg/kg 50-0 ND 102 75-125 <br /> Vanadium 77.1 0.500 50-0 29.7 95 75425 <br /> Thallium 53.7 0.500 5.0 ND 107 75-125 <br /> Selenium 47.2 0.500 5-0 ND 94 75-125 <br /> Antimony 50.9 1.00 5(-0 ND 102 75-125 <br /> Lead 130 0.500 5(.0 80.8 98 75-125 <br /> Nickel 71.6 0.500 5('0 21.7 100 75-125 <br /> Copper 85.0 0.500 5(-0 45.2 80 75-125 <br /> Cobalt 56.4 0.500 5(.0 4.65 104 75-125 <br /> Cadmium 53.4 0.100 5(-0 0.194 106 75-125 <br /> Barium 1360 0.500 5(.0 1230 260 75-125 <br /> Silver 54.2 0.500 5('0 0.631 107 75-125 <br /> Zinc 77.0 0.500 50.0 21.4 111 75-125 <br /> Molybdenum 50.2 0.500 50.0 ND 100 75-125 <br /> Beryllium 48.9 0.500 5(.0 ND 98 75-125 <br /> Chromium 75.7 0.500 5(-0 21.3 109 75-125 <br /> Matrix Spike Dup(AC70504-MSDI) Source: 7022608-02 Prepared&Analyzed:05-Mar-07 <br /> Lead 125 0.500 mglkg 5(.0 80.8 88 75-125 4 20 <br /> Barium 1350 0.500 5.0 1230 240 75-125 0.7 20 <br /> Vanadium 78.5 0.500 5(.0 29.7 98 75-125 2 20 <br /> Thallium 51.4 0.500 5(-0 ND 103 75-125 4 20 <br /> Selenium 47.7 0.500 59.0 ND 95 75-125 1 20 <br /> Antimony 52.4 1.00 59.0 ND 105 75-125 3 20 <br /> Zinc 76.6 0.500 1.0 21.4 110 75-125 0.5 20 <br /> Nickel 73.0 0.500 .0 21.7 103 75-125 2 20 <br /> Beryllium 50.7 0.500 5(.G ND 101 75-125 4 20 <br /> Arsenic 52.5 0.500 5(-0 ND 105 75-125 3 20 <br /> Copper 85.0 0.500 5(-0 45.2 80 75-125 0 20 <br /> Chromium 75.7 0.500 5 .0 21.3 109 75-125 0 20 <br /> Cobalt 58.2 0.500 5C.0 4.65 107 75-125 3 20 <br /> Cadmium 54.7 0.100 5.0 0.194 109 75-125 2 20 <br /> mg/L=milligrams per Liter-ppm DLR=Detection Limit for Purpose of Reporting. <br /> ug/L=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) 477-8105 Fax: (209) 477-8148 �� <br />