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PRECISION <br /> ENVIRO-TECH <br /> Analytical Laboratory CERTIFICATE OFANALYSIS <br /> Thursday,February 3,2005 <br /> Attention: Abby Raceo <br /> Neil O.Anderson &Associate Report Page 12 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 %Rmc RPD <br /> Aaaly[e Resnit Limit iluits Level Result %RF.0 Limits RPD limit Notes <br /> Batch AA52506-General Pre aration <br /> Blank(AA52506-BLKI) _P_repared&Malyied:25-Jan-05 -- <br /> Fluoride NO 1.00 mgt <br /> Sulfate as SO4 ND 1.00 " <br /> Chloride ND 1.00 <br /> Nitrite u NO2 ND 0.500 " <br /> Nitrate as NO3 ND 1.00 " <br /> Nitrate as N ND 0.200 " <br /> Phosphate ND 0.500 " <br /> Nitrite as N ND 0.200 <br /> • LCS(AA52506-BSt) Prepared&Analyzed:25-Jan-05 <br /> Chloride 104 100 mgyL 100 104 80-120 <br /> Fluoride 10.3 1.00 10.0 103 80-120 <br /> Sulfate as SO4 105 1.00 100 105 80-120' <br /> :Nitrate as NO3 51.6 1.00 50.0 103 80-120 <br /> Nitrate as N 11.6 0.200 11.3 103 80-120 <br /> Nitrite as NO2 47.9 0.500 50.0 96 70-120 <br /> Nitrite as N 14.3 0.200 15.0 95 70-110 <br /> Phosphate 51.5 0.500 50.0 103 80-120 <br /> Matrix Sikp a(AA52506-MSI) - Source:5012502-01 Prepared_&Analyzed:25-Jan-OS <br /> Fluoride 4.15 1.00 mg/L 5.00 ND 83 75-125 <br /> Chloride 40.3 1.00 50.0 2.57 75 75-125 <br /> Sulfate as SO4 41.6 1.00 50.0 3.48 76 75-125 <br /> Nitrate asN 4.26 0.200 5.64 No 76 75-125 <br /> Nitrite as NO2 18.5 0.500 25.0 ND 74 70-110 <br /> Nitrite as 5.54 0.200 7.48 ND 74 70-120 <br /> Phosphate 19.2 0.50011 25.0 ND 77 75-125 <br /> Nitrate as NO3 18.9 1.00 25.0 ND 76 75-125 <br /> mgyL-milligramrper Liter=Ppm DLR=Duearmt limit for Purpose afReMrrmg. <br /> micmgm e,per Liter-ppb aceplimal smnple matrices or interferences may . <br /> re,ult in higher detection bestir. <br /> • RESPECTFFULY SUBMITTED, <br /> N� <br /> Jonathan Le,Laboratory Director <br /> __ ._ .- -_ - - .. t . 1 , nnm aoo ornc 1;.,... /1110) 47zute>z <br />