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PRECISION <br /> 40 ENVIRO-TEC7H —� <br /> Analytical Laboratory CER TIFICA TE OF ANAL YSIS <br /> Monday, June 2, 2008 <br /> Attention: Ryan Matthews <br /> Diamond Pet Foods Report Page 7 of 13 <br /> 250 East Roth Road <br /> Lathrop, CA 95330 <br /> Metals by EPA 200 Series Methods- Quality Control <br /> Precision Enviro-Tech <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch AE81609-EPA 3020A <br /> Blank(AE81609-BLK1) _ Prepared: 16-May-08 Analyzed: 18-May-08 <br /> Mercury ND 1.0 ug/I <br /> LCS(AE81609-BS1) Prepared: 16-May-08 Analyzed: I8-May-08 <br /> Mercury ND 1.0 ug/1 89-108 <br /> Matrix Spike(AE81609-MS1) Source:8050812-01 Prepared: 16-May-08 Analyzed: 18-May-08 <br /> Mercury ND 1.0 ugn ND 75-125 <br /> Matrix Spike Du (AE81609-MSDI) Source:8050812-01 Prepared: 16-May-08 Analyzed: I8-May-08 _ <br /> Mercury ND 1.0 ugn ND 75-125 20 <br /> mg/L=milligrams per Liter-ppm DLR-Defection Limit for Purpose of Reporting. <br /> uglL-micrograms per Liter=plot, Exceptional sample matrices or interferences may <br /> result in higher defection limits. <br /> RESPECTFULLY SUBMITTED, <br /> �0T� <br /> Jonathan Le, Laboratory Director - <br /> 3935 N. Coronado Ave Stockton CA. 95204 Dhone: (209) 477-8105 Fax: (209) 546-7497 <br />