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PRECISION <br /> ENVIRO-TECH <br /> Analytical Laboratory CERTIFICATE OFANAL YSIS <br /> Thursday,January 20, 2005 <br /> Attention: Abby Raeco <br /> Neil O. Anderson&Associate Report Page 8 of 22 <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 Rcsutt Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch AA50608-General Preparation <br /> Blank(AA50608-BLKl) -_ Prepared&_Analyzed:06-Jan-05 <br /> Fluoride ND 1.00 mg/L <br /> Chloride ND 1.00 " <br /> Sulfate as SO4 ND 1.00 " <br /> Nitrite as N ND 0.200 " <br /> Nitriteas NO2 ND 0.500 " <br /> Nitrate as N ND 0.200 " <br /> Nitrate as NO3 ND 1.00 <br /> LCS(AA50608-BSI) __Prepared&Analyzed:06-Jan-05 <br /> Chloride 106 1.00 mglL 100 106 80-120 <br /> Apulfate as SO4 112 1.00 100 112 80-120 <br /> luoride 10.8 1.00 10.0 108 80-120 <br /> Nitrite a5 N 18.8 0.200 15.0 125 70-110 <br /> Nitrite as NO2 62.7 0.500 50.0 125 70-120 <br /> Nitrate as N 12.9 0.200 11.3 114 80-120 <br /> Nitrate as NO3 57.2 L00 50.0 114 80-120 <br /> Matrix S.�(AA50608-MSI) . _ Source:501060860801 Prepared red&Analyzed:06-San-05 <br /> Chloride 92.6 1.00 mg/L 50.0 66.0 53 75-125 <br /> Fluoride 5.21 1.00 " 5.00 ND 104 75-125 <br /> Sulfate as SO4 66.2 1.00 50.0 23.4 86 75-125 <br /> Nitrite as 7.23 0.200 7.48 ND 97 70-120 <br /> Nitrate as NO3 58.0 1.00 25.0 53.4 18 75-125 <br /> Nitrate as N 13.1 0.200 5.64 12.0 20 75-125 <br /> Nitrite as NO2 24.2 0.500 25.0 ND 97 70-110 <br /> Matrix Spike DuPLAA50608-MSD1L Source:5010608-01 Prepared&Analyzed:06-Jan-05 <br /> Chloride 92.4 1.00 mg/L 50.0 66.0 53 75-125 0.2 20 <br /> Sulfate as SO4 66.0 1.00 50.0 23.4 85 75-125 0.3 20 <br /> Fluoride 5.33 1.00 5.00 ND 107 75-125 2 20 <br /> Nitrate as N 13.0 0.200 5.64 12.0 18 75-125 0.8 20 <br /> Nitrate as NO3 57.4 1.00 25.0 53.4 16 75-125 1 20 <br /> Nitrite as NO2 24.1 0.500 25.0 ND 96 70-110 0.4 20 <br /> Nitrite as N 7.23 0.200 7.48 ND 97 70-120 0 20 <br /> rugs-mimgramsperurer-ppm DLR-Derection Limitfor Purpose of Reporting. <br /> ug/L microgramsper Lifer-ppb Frceptional smnple matrices or inferfnences may <br /> result m higher dere Tian limas. <br /> RESPECTFULLYSUBMITIBD, <br /> Jonathan Le,Laboratory Director <br /> 7743N. West Lane. Suite B2 Stockton CA. 95210 Dhone: (209) 477-8105 Fax: (209) 477-8148 <br />