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M CERTIFICATE OFANALYSIS <br /> Analytical Laboratory <br /> 3935 N.COMAS&Ave,Stockton CA.95204 Phoee:(209)Cn-8105 <br /> Chesney Consulting Project Number: Chevron-Thornton <br /> P.0.BOX 3794 Project Name: Chevron-Thornton Work Order No.: <br /> Turlock,CA 95381 <br /> Project Manager: Don Chesney <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 /> mglL n milligrams per Liter a ppm G.Grab Sample <br /> uglL=micrograms per Liter-ppb Comp-Grab-Composite of 4 Grab Sample during 24hrs Grab <br /> C-Composite Sample period and composite into I sample prior analysis <br /> DLR-Detection Limit for Purpose of Reporting. <br /> Exceptional sample matrices or interferences mov <br /> result in higher detection limits. <br /> MCL-Maximum contaminant level(MCL)is the highest <br /> concentration of chemicals permitted in drinking water.vvstems <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 /> Precision Enviro-Tech. o California FLAP Cert.#2387 <br /> Page 9 of 10 <br />