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PRMSOR TH p 0 TO 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 <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Analyzed Method Notes <br /> E.S 1,2,3(2509195-01)Water Sampled:12-Sep-25 09:15 Received:12-Sep-25 10:42 <br /> Total Alkalinity 686 1.00 mg/L I A151907 19-Sep-25 SM 2320 B <br /> Hydroxide Alkalinity ND 1.00 A151907 " <br /> Bicarbonate Alkalinity 686 1.00 A151907 " <br /> Carbonate Alkalinity ND 1.00 AI5I907 " <br /> Ammonia as N 118 6.00 " 10 A151501 15-Sep-25 EPA 350.1 <br /> Biochemical Oxygen Demand 61.8 1.00 " 1 A151205 12-Sep-25 SM 5210 B <br /> Specific Conductance(EC) 1760 1.00 umhos/cm A151909 19-Sep-25 SM 2510 B <br /> Nitrate as N ND 0.400 mg/L A151208 12-Sep-25 EPA 300.0 <br /> Nitrite as N ND 0.400 " A151208 " " <br /> pH 7.74 0.0100 pH Units A151207 12-Scp-25 SM 4500-H+B <br /> Total Kjeldahl Nitrogen 85.8 6.00 mg/L 10 A151805 22-Sep-25 EPA 351.2 <br /> Total Nitrogen 85.8 0.400 " " [CALC] SM4500 N <br /> S.T.2nd Comp(2509195-02)Water Sampled:12-Sep-25 09:30 Received:12-Sep-25 10:42 <br /> Total Alkalinity 707 1.00 mg/L I A151907 19-Sep-25 SM 2320 B <br /> Hydroxide Alkalinity ND 1.00 A151907 " <br /> Bicarbonate Alkalinity 707 1.00 A151907 " <br /> Carbonate Alkalinity ND 1.00 A151907 " <br /> Ammonia as N 125 6.00 " 10 A151501 15-Scp-25 EPA 350.1 <br /> Biochemical Oxygen Demand 188 1.00 1 A15I205 12-Sep-25 SM 5210 B <br /> Specific Conductance(EC) 1860 1.00 umhos/cm A151909 19-Sep-25 SM 2510 B <br /> Nitrate as N ND 0.400 mg/L A151208 12-Scp-25 EPA 300.0 <br /> Nitrite as N 1.15 0.400 1. 11A151208 " <br /> pH 7.45 0.0100 pH Units " A15I207 12-Sep-25 SM 4500-H+B <br /> Total Kjeldahl Nitrogen 98.8 6.00 mg/L 10 A151805 22-Sep-25 EPA 351.2 <br /> Total Nitrogen 99.9 0.400 [CALC] SM4500 N <br /> Precision Enviro-Tech. <> California ELAP Cert.#2387 <br />