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pRM90H 11M p INCH CERTIFICATE OFANALYSIS <br /> Analytical Laboratory <br /> 3935 N.Coronado Ave,Stockton CA.95204 Phone:(209)477-8105 <br /> Chesney Engieering,Inc Project Number: Chevron-Thomton <br /> P.0.BOX 3794 Project Name: Chevron-Thomton Work Order No.: <br /> Turlock,CA 95381 <br /> Project Manager: Don Chesney <br /> Conventional Chemistry Parameters by APHAIEPA Methods-Quality Control <br /> Reporting Spike Source <br /> Analyte Result Limit Units Level Result %REC RPD Notes <br /> Blank(AC63003-BLK1) <br /> Total Alkalinity ND 1.00 mg/L <br /> Hydroxide Alkalinity ND 1.00 " <br /> Bicarbonate Alkalinity ND 1.00 " <br /> Carbonate Alkalinity ND 1.00 " <br /> Duplicate(AC63003-DUPI) <br /> Total Alkalinity 172 1.00 mg/L 169 2 <br /> Reference(AC63003-SRMl) <br /> Total Alkalinity 1040 1.00 mg/L 1000 104 <br /> Duplicate(AC63004-DUPI) <br /> Specific Conductance(EC) 250 1.00 umhos/cm 250 0 <br /> Reference(AC63004-SRMl) <br /> Specific Conductance(EC) 1000 1.00 umhos/cm 1000 100 <br /> Blank(AD60204-BLK1) <br /> Ammonia as N ND 0.60 mg/L <br /> LCS(AD60204-BSI) <br /> Ammonia as N 9.50 0.60 mg/L 10.0 95 <br /> LCS Dup(AD60204-BSDI) <br /> Ammonia as N 10.1 0.60 mg/L 10.0 101 6 <br /> Precision Enviro-Tech. o California ELAP Cert.#2387 <br /> Page 6 07T 10 <br />