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Precision Enviro-Tech Date: 12/24/97 <br /> Analytical Laboratory <br /> 2040 E.Harding Way, Suite 8 Stockton, CA,95205 <br /> Phone:(209)462-0892 Fax:(209)462-7935 <br /> Certificate of AnalYSiS <br /> Frank Rauzi <br /> Speedy Food Store Customer 1D: SFS <br /> 3158 Ranier Ave <br /> Stockton CA. 95204 <br /> Sample Information <br /> Lab Sample ID: PEI 570-01 Sample Matrix: Drinking Water <br /> Sample Description: C@weil head Sampler Name: Jonathan Le <br /> Date Sampled: 12/24/97 11:00,00 AM Project Name: Nitrate & Nitrite <br /> Digestion Method: N/A <br /> Analytical Result <br /> Parameter Method DIR Units Result 1 <br /> ENitrate SM 4110 B 1 m L 5.0 <br /> SM 4110 B 0.2 m /L ND <br /> ully u itted, <br /> ory <br /> Director <br /> Hao V. Le, B.S <br /> r i <br /> r <br /> NO• None Detected DLR-Detection LimConversions: <br /> Limit for the Purpose of Reporting 1 =1000 ppb <br /> - Exceptional sample matrices or interferences ppm <br /> mg/L- milligrams/Liter= ppm <br /> mg/kg- milligrams/kilogram= ppm may result in higher detection limits t ppb=0.001 ppm <br /> ug/kg micrograms/kilogram= ppb DLR=DLR X Dilution Factor <DLR=Trace of Analyte <br /> i <br />