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PRECISION <br /> ENVIRO-TECH <br /> Analytical Laboratory CERTIFICATE OF ANALYSIS <br /> Thursday,February 3,2005 <br /> Attention: Abby Raceo <br /> Neil 0.Anderson &Associate Report Page/4 of 16 <br /> 902 Industrial Way <br /> Lodi, CA 95240 <br /> Conventional Chemistry Parameters by APHA/EPA Methods- Quality Control <br /> Precision Enviro-Tech <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result °/aRF.0 Limits RPD Limit Notas <br /> Batch AA52508-EPA 200 Series <br /> Matrix Spike(AA52508-MSI) Source:5012502.01 Prepared&Analyzed:25-Jan-05 <br /> Calcium 53.2 1.0 mg/L 50.0 1.2 104 80-120 <br /> Magnesium 48.0 1.0 50.0 ND 96 80-120 <br /> Sodium 55.1 1.0 50.0 4.3 102 80-120 <br /> Potassium 51.8 1.0 50.0 0.73 102 80-120 <br /> Matrix Spike Dup(AA52508-MSD1) Source:5012502-01 _ Prepared&Analyzed:25-Jan-05 _ <br /> Calcium 54.0 1.0 mg/L 50.0 1.2 106 80-120 1 20 <br /> Magnesium 49.6 1.0 50.0 ND 99 80-120 3 20 <br /> • Sodium 56.0 1.0 i 50.0 4.3 103 80-120 2 20 <br /> Potassium 53.8 1.0 50.0 0.73 106 80-120 4 20 <br /> Batch AA52705-General Preparation <br /> Blank(AA52705-BLKI) Prepared_&Analyzed:27-Jan_OS <br /> Total Dissolved Solids ND 1.00 mp/I- <br /> Duplicate(AA52705-DUPI) Source:5012612-01 Prepared&Analyzed:27-Jan-05 <br /> Total Dissolved Solids 2840 1.00 mg/L 2820 0.7 200 <br /> Reference(AA52705-SRMl) _ Prepared&Analyzed:27-Jan-05 <br /> Total Dissolved Solids 404 1.00 mg/L 400 101 80-120 <br /> Batch AA52805-General Preparation <br /> Blank(AA52805-BLKl- _Prepared&Analyzed:02-Feb-O.5 <br /> Total Kjeldahl Nitrogen 0.186 0.200 mg/L <br /> m&,L=owngmouper Uur-ppm DLR'-Detection LimitforPurpose of Reporting. <br /> YeL=mlemgramsper Luer-ppb &sceptionalsample matrices or interferences may <br /> result in higher detection limits. <br /> • RESPECTFULLY SUBMTl-TED, <br /> V��%^ _� <br /> Jonathan Le,Laboratory Director <br /> I .I �r 1 ..._ n__.- n9 n.__zi..._ tie n[91n ..b........ /7/1nl 477 Qlni 77s,- /7/101 d77_R/1A' <br />