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PRECISION <br /> • � ENVIRO-TECH <br /> Analytical Laboratory CERTIFICATE OFANALYSIS <br /> Thursday,January 20,2005 <br /> Attention: Abby Racco <br /> Neil O. Anderson&Associate Report Page 5 of 12 <br /> 902 Industrial Way <br /> Lodi, CA 95240 <br /> Metals by EPA 200 Series Methods-Quality Control <br /> Precision Enviro-Tech <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit units Level Result %REC limits RPD Limit Notes <br /> Batch AA50704-EPA 200 Series <br /> Blank(AA50704-BLKl� ,. ._- . Prepared&Analysed:07-Jan-05 <br /> Manganese ND 20 ugh <br /> iron ND 50 " <br /> L.CS(AA50704-BSI)_ _.- Prepared&Analyzed:07-Jan-05 <br /> Manganese 996 20 ugA 1000 100 85-115 <br /> Iron 1010 50 1000 101 85-115 <br /> Matrix S ip ke(AA50704-MSl) Source:4122901-01 Prepared&Analyzed:07-Jan-05 <br /> iron 1100 50 ug/1 1000 ND 110 75-125 <br /> Manganese 1280 20 1000 55 122 75-125 <br /> Matrix Spike Dup(AA50704-MST)7)_ Source:4122901-01 Prepared&Analyzed:07-Jan__-05 _- <br /> Manganese 1240 20 ug/I 1000 55 118 75-125 3 20 <br /> Iron 1060 50 1000 ND 106 75-125 4 20 <br /> Batcb AA52004-EPA 200 Series <br /> Blank(AA520047BLKI) Prepared&Analyzed:20-Jan-05 <br /> Silica(Si02) ND 0.0500 ;g IL <br /> LCS X04BSI) Prepared&Analyzed:20-Jan_-05 <br /> Silica(Si02) 0.503 0.0500 mg/L 0.500 101 85-115 <br /> Matrix Spike(AA52004-MSI.) Source:5010612-01 _Prepared&Analyzed:20-lan-05 . <br /> Silica(SiO2) 25.0 0.0500 mg/L 0.500 24.5 100 75-125 <br /> _Matrix Spike Dup(AA52004-MSDI) Source:5010612-01 Prepared&Analyzed:20-Jan-05 <br /> Silica(SiO2) 25.1 0.0500 mg/L 0.500 24.5 120 75-125 0.4 20 <br /> mp/L=miltlgramsperLBer-ppm DLR-Detection Lemitforl'vrpose ofReporung. <br /> vg/L=mieregramsperLiter—ppb Lxcepaimal sample matrices or imerferemeea may <br /> re.dt in higher detection lmiits. <br /> RESPECTFULLY SUBMI�TT <br /> TED, <br /> • C— 0're <br /> Jonathan Le,Laboratory Director <br /> 7743 N West Lane . Suite B2 Stockton CA. 95210 phone: (209) 477-8105 Fax: (209) 477-8148 <br />