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PRECISION <br /> ENVIRO-TECH <br /> Ell 00Analytical Laboratory <br /> CERTIFICATE OFANAL YSIS <br /> Sunday,March 6, 2005 <br /> '— Attention: Rebecca Haskett <br /> Neil O.Anderson &Associate Report Page 4 of5 <br /> 902 Industrial Way <br /> Lodi, CA 95240 <br /> Conventional Chemistry Parameters by APHA/EPA Methods- Quality Control <br /> : t <br /> Precision Enviro-Tech <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REG Limits RPD Limit Notes <br /> Batch AC50111 -General Preparation <br /> Blank(AC50111-BLK1) Prepared&Analyzed: 01-Mar-05 <br /> Nitrate as NO3 ND 1.00 mg/L <br /> ti LCS(AC50111-BS1) Prepared&Analyzed: 01-Mar-05 <br /> Nitrate as NO3 53.5 1.00 mg/L 50.0 I07 80-120 <br /> Matrix Spike(AC 50111-MS 1) Source:5030112-01 Prepared&Analyzed: 01-Mar-05 <br /> h Nitrate as NO3 25.0 1.00 mglL 25.0 ND 100 75-125 <br /> =' Matrix Spike Dup(AC501 I I-MSD 1) Source. 5030112-01 Prepared&Analyzed:01-Mar-05 <br /> Nitrate asNO3 24.4 1.00 mg/L 25.0 ND 98 75-125 2 20 <br /> Reference(AC50111-SRMl) Prepared&Analyzed:01-Mar-05 <br /> k Nitrate as NO3 14.4 1.00 mg/L 15.3 94 80-110 <br /> � j <br /> y <br /> k <br /> i <br /> d <br /> 1 <br /> mglL=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 /> (�j i <br /> t f: <br /> /Ot-r� <br /> Jonathan Le,Laboratory Director <br /> 7743 N. West Lane . Suite B2 Stockton CA. 95210 Dhone: (209) 477-8105 Fax: (209) 477-8148 <br /> f <br />