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p Mon TH p C TCH CERTIFICATE OFANALYSIS <br /> Analytical Laboratory <br /> 3935 N.Coronado Ave,Stockton CA.95204 Phone:(209)477-8105 <br /> Chesney Engieering,Inc Project Number: [none] <br /> P.O.BOX 3794 Project Name: Thorton Chevron Work Order No.: <br /> Turlock,CA 95381 <br /> Project Manager: Don Chesney <br /> Conventional Chemistry Parameters by APHA/EPA Methods-Quality Control <br /> Reporting Spike Source <br /> �Analyte Result Limit Units Level Result %RF.0 RPD Notes <br /> Blank(A151205-BLK1) <br /> Biochemical Oxygen Demand ND 1.00 mg/L <br /> Reference(A151205-SRMl) <br /> Biochemical Oxygen Demand 177 1.00 mg/L 198 89 <br /> Duplicate(AI51207-DUPl) <br /> pH 6.17 0.0100 pH Units 6.17 0 <br /> Reference(AI51207-SRM1) <br /> pH 7.00 0.0100 pH Units 7.00 100 <br /> Blank(AI51208-BLK1) <br /> Nitrate as N ND 0.400 mg/L <br /> Nitrite as N ND 0.400 " <br /> Blank(A151208-BLK2) <br /> Nitrate as N ND 0.400 mg/L <br /> Nitrite as N ND 0.400 " <br /> LCS(AI51208-BSI) <br /> Nitrate as N 9.77 0.400 mg/L 10.0 98 <br /> Nitrite as N 0.968 0.400 1.00 97 <br /> LCS Dup(AI51208-BSD1) <br /> Nitrate as N 9.71 0.400 mg/L 10.0 97 0.6 <br /> Nitrite as N 0.947 0.400 1.00 95 2 <br /> Precision Enviro-Tech. o California ELAP Cert.#2387 <br />