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PRECISION <br /> ENVIRO-TECH <br /> Analytical Laboratory CERTIFICATE OFANALYSIS <br /> Tuesday, March 31, 2009 <br /> Attention: James Robinson <br /> JR Squared Consulting Report Page 4 of 5 <br /> 6532 Meneil Ct <br /> Valley Springs, CA 95252 <br /> Conventional Chemistry Parameters by APFWEPA Methods- Quality Control <br /> Precision Enviro-Tech <br /> Reporting Spike Source %REC RPD <br /> lAnalyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch AC92503-General Preparation <br /> Blank(AC92503-BLKI) _ Prepared:25-Mar-09 Analyzed:09-Mar-25 <br /> Nitrate as NO3 ND 1.00 mgtL <br /> LCS(AC92503-BS1) Prepared:25-Mar-09 Analyzed:09-Mar-25 <br /> Nitrate as NO3 17.6 6.00 mglL 20.8 84 70-120 <br /> Matrix Spike(AC92503-MSI) Source:9032507-03 Prepared:25-Mar-09 Analyzed:09-Mar-25 <br /> Nitrate as NO3 722 1.00 mgtL 20.8 55.2 82 75-125 <br /> Matrix Spike Dup(AC92503-MSDI) Source:9032507-03 Prepared:25-Mar-09 Analyzed:09-Mar-25 <br /> Nitrate as NO3 71.0 1.00 mg/L 20.8 55.2 76 75-125 2 20 <br /> mg/L=milligrams per Liter=ppm DLR-Detection l imij for Purpose ofReporling. <br /> v&L=micrograms per Liter-ppb Exceptional sample matrices or interferences may <br /> result m higher dejection limits. <br /> RESPECTFULLY SUBMITTED, <br /> Jonathan Le,Laboratory Director <br /> 3935 N. Coronado Ave Stockton CA. 95204 Dhone: (209) 477-8105 Fax: (209) 546-7497 <br />