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PRECISION <br /> ENVIRO-TECH <br /> Analytical Laboratory CERTIFICATE OF ANALYSIS <br /> Wednesday, March 18, 2009 <br /> Attention: James Robinson <br /> JR Squared Consulting Report Page 4of5 <br /> 6532 Meneil Ct <br /> Valley Springs, CA 95252 <br /> Conventional Chemistry Parameters by APHA/EPA Methods-Quality Control <br /> Precision Enviro-Tech <br /> Reporting Spike Source °/uREC RPD <br /> Analyte Result Limit Units Level Result °/6REC Limits RPD Limit Notes <br /> Batch AC91302-General Preparation <br /> Blank(AC91302-BI,KI) Prepared:13-Mar-09 Analyzed:09-Mar-13 <br /> Nitrate as NO3 ND 1.00 mg/L <br /> LCS(AC91302-BS1) Prepared:13-Mar-09 Analyzed:09-Mar-13 <br /> Nitrate as NO3 18.4 1.00 mg/L 20.0 92 70-120 <br /> Matrix Spike(AC91302-MSI) Source:9031308-01 Prepared:13-Mar-09 Analyzed:09-Mar-13 <br /> Nitrate as NO3 454 1.00 mg/L 20.0 ND NR 75-125 <br /> Matrix Spike Dap(AC91302-MSD1) Source:9031308-01 Prepared: 13-Mar-09 Analyzed:09-Mar-13 <br /> Nitrate as NO3 453 1.00 mg/L 20.0 ND NR 75-125 0.3 20 <br /> mg/L=milligrams per Liter=ppm DLR=Detection Limit for Purpose of Reporting. <br /> ug/L=micrograms per Liter=ppb Ezceptional.sample matrices or interferences may <br /> result in higher detection limits. <br /> RESPECTFULLY SUBMITTED, <br /> Jonathan Le,Laboratory Director <br /> 3935 N. Coronado Ave Stockton CA. 95204 phone: (209) 477-8105 Fax: (209) 546-7497 <br />