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PRECISIONS <br /> ENVIRO-TECH <br /> Analytical Laboratory CERTIFICATE OFANAL YSIS <br /> Tuesday,December 21, 2004 <br /> Attention: Becky Haskett <br /> Neil O. Anderson &Associate Report Page 4 of 5 <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 Result Limit Units Level Result 9/.RFC Limits RPD Limit Notes <br /> Batch AL41611 -General Preparation <br /> `Blank(AL41611-BLKI) Prepared&Analyzed: 16-Dec-04 <br /> Nitrate as NO3 ND 1.00 mg/L <br /> { LCS(AL41611-BS1) Prepared&Analyzed: 16-Dec-04 <br /> 16.Nitrate as NO3 53.1 1.00 mg/L 50.0 106 80-120 <br /> Matrix Spike(AL41611-MS1) Source:4121612-01 Prepared&Analyzed: 16-Dec-04 <br /> LNitrate as NO3 28.7 1.00 mg/L 25.0 9.49 77 75-125 <br /> Matrix Spike Dup(AL41611-MSDl) Source:4121612-01 Prepared&Analyzed: 16-Dec-04 <br /> Nitrate as NO3 29.3 1.00 mg/L 25.0 9.49 79 75-125 2 20 <br /> Reference(AL41611-SRMl) Prepared&Analyzed: 16-Dec-04 <br /> Nitrate as NO3 14.7 1.00 mg/L 15.3 96 80-110 <br /> r <br /> r <br /> r <br /> `r <br /> r <br /> L <br /> mgEL miQigramsper Liter=ppm DLR-Detection LimitforPurpose of Reporting. <br /> ug/L—micrograms per Later—ppb Exceptional smnple matrices or interferences may <br /> result in higher detection limits. <br /> RESPECTFULLY SUBMITTED, <br /> L CW <br /> Jonathan Le,Laboratory Director <br /> 7743 N. West Lane. Suite B2 Stockton CA. 95210 Dhone: (209) 477-8105 Fax: (209) 477-8148 <br />