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PKICWOH THo o Ra <br />Analytical Laboratory <br />3935 N. Coronado Ave, Stockton CA. 95204 P6ono: (209) 477-8105 <br />CERTIFICATE OFANALYSIS <br />Chesney Consulting Project Number: Hernandez <br />P. O. BOX 3794 Project Name: Hernandez Work Order No.: <br />Turlock, CA 95381 <br />Project Manager: Don Chesney <br />EDB and DBCP by EPA Method 504.1- Quality Control <br />Reporting Spike Source <br />malyte Result Limit Units Level Result %REC RPD Notes <br />Blank (AK10910-BLK1) <br />1,2-Dibromo-3-chloropropane (DBCP) ND 0.0200 ug/l <br />1,2-Dibromoethane (EDB) ND 0.0100 11 <br />LCS (AK10910-BSI) <br />1,2-Dibromo-3-chloropropane (DBCP) <br />0.0895 <br />0.0200 <br />u9/1 <br />0.110 <br />81 <br />1,2-Dibromoethane (EDB) <br />0.0979 <br />0.0100 <br />0.110 <br />89 <br />LCS Dup (AK10910-BSDI) <br />1,2-Dibromo-3-chloropropane (DBCP) <br />0.0888 <br />0.0200 <br />ug/1 <br />0.110 <br />80 <br />0.8 <br />1,2-Dibromoethane (EDB) <br />0.0969 <br />0.0100 <br />0.110 <br />88 <br />1 <br />Matrix Spike (AK10910-MSI) <br />1,2-Dibromo-3-chloropropane (DBCP) <br />0.0956 <br />0.0200 <br />ug/l <br />0.110 <br />ND <br />87 <br />1,2-Dibromoethane (EDB) <br />0.105 <br />0.0100 <br />0.110 <br />ND <br />95 <br />Matrix Spike Dup (AK10910-MSD1) <br />1,2-Dibromo-3-chloropropane (DBCP) <br />0.0935 <br />0.0200 <br />ug/I <br />0.110 <br />ND <br />85 <br />2 <br />1,2-Dibromoethane (EDB) <br />0.0996 <br />0.0100 <br />0.110 <br />ND <br />90 <br />6 <br />Notes and Definitions <br />Item Definition <br />Dry Sample results reported on a dry weight basis. <br />ND Analyte NOT DETECTED at or below the reporting limit. <br />mg/L = milligrams per Liter = ppm G- Grab Sample Comp -Grab- Composite of 4 Grab Sample during 24hrs Grab <br />uglL = micrograms per Liter = ppb C -Composite Sample period and composite into 1 sample prior analysis <br />DLR = Detection Limit for Purpose of Reporting. <br />Exceptional sample matrices or interferences may <br />result in higher detection limits. <br />MCL- Maximum contaminant level (MCL) is the highest <br />concentration of chemicals permitted in drinking water systems <br />RPD Relative Percent Difference <br />%REC Percent Recovery <br />Source Sample that was matrix spiked or duplicated. <br />MMO-MUG-P/A - Total Coliform and E.Coli Test in Drinking Water by MMO-MUG, using Standard Method 22nd Edition. <br />The State Board of Health requires that bacteriological results must be'ABSENCE' or less than 1.1 (for MTF method) to meet drinking water requirements. <br />Approved By <br />Precision Enviro-Tech. o California ELAP Cert. #2387 <br />Page 6 of 7 <br />