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D D 00H M D Q 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.O.BOX 3794 Project Name: Chevron-Thomton 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(2603362-01)Waste Water Sampled:27-Mar-26 10:00 Received:27-Mar-26 10:48 <br /> Total Alkalinity 888 1.00 mg/L 1 AC63003 30-Mar-26 SM 2320 B <br /> Hydroxide Alkalinity ND 1.00 AC63003 " <br /> Bicarbonate Alkalinity 888 1.00 AC63003 <br /> Carbonate Alkalinity ND 1.00 AC63003 " <br /> Ammonia as N 148 6.00 " 10 AD60204 02-Apr-26 EPA 350.1 <br /> Biochemical Oxygen Demand 538 1.00 1 AC62706 27-Mar-26 SM 5210 B <br /> Specific Conductance(EC) 2330 1.00 umhos/cm AC63004 30-Mar-26 SM 2510 B <br /> Nitrate+Nitrite as N 1.49 0.200 mg/L " [CALC] 27-Mar-26 EPA 300.0 <br /> Nitrate as N ND 0.400 AC62702 " <br /> Nitrite as N 1.49 0.200 AC62702 <br /> PH 7.41 0.0100 pH Units AC62705 27-Mar-26 SM 4500-H+B <br /> Total Kjeldahl Nitrogen 112 6.00 mg/L 10 AD60802 10-Apr-26 EPA 351.2 <br /> S.T.2nd COMP(2603362-02)Waste Water Sampled:27-Mar-26 10:30 Received:27-Mar-26 10:48 <br /> Total Alkalinity 816 1.00 mg/L I AC63003 30-Mar-26 SM 2320 B <br /> Hydroxide Alkalinity ND 1.00 AC63003 " <br /> Bicarbonate Alkalinity 816 1.00 AC63003 " <br /> Carbonate Alkalinity ND 1.00 AC63003 " <br /> Ammonia as N 151 6.00 10 AD60204 02-Apr-26 EPA 350.1 <br /> Biochemical Oxygen Demand 153 1.00 1 AC62706 27-Mar-26 SM 5210 B <br /> Specific Conductance(EC) 2200 1.00 umhos/cm AC63004 30-Mar-26 SM 2510 B <br /> Nitrate+Nitrite as N ND 0.200 mg/L [CALC] 27-Mar-26 EPA 300.0 <br /> Nitrate as N ND 0.400 AC62702 " <br /> Nitrite as N ND 0.200 AC62702 " <br /> PH 7.44 0.0100 pH Units AC62705 27-Mar-26 SM 4500-H+B <br /> Total Kjeldahl Nitrogen 141 6.00 mg/L 10 AD60802 10-Apr-26 EPA 351.2 <br /> Precision Enviro-Tech. o California ELAP Cert.#2387 <br /> Page 3 of 10 <br />