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CERTIFICATE OFANALYSIS <br /> Analytical Laboratory <br /> 3935 N.Coronado Ave.Stockton CA.95204 Phone:(209)477-8105 <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 /> Conventional Chemistry Parameters by APHA/EPA Methods <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Analyzed Method <br /> Notes <br /> Micro-Sep-Tec-Final Tank(2031711-01)Waste Water Sampled:17-Mar-2211:15 Received:17-Mar-22 13:55 <br /> Total Alkalinity 198 1.00 mg/L 1 AC21715 17-Mar-22 SM 2320 B <br /> Hydroxide Alkalinity ND 1.00 AC21715 <br /> Bicarbonate Alkalinity 198 1.00 AC2 t 715 <br /> Carbonate Alkalinity ND 1.00 AC21715 <br /> Ammonia as N ND 0.60 AC22309 23-Mar-22 EPA 350.1 <br /> Biochemical Oxygen Demand 4.5 2.0 AC21711 17-Mar-22 SM 5210 B <br /> Chloride 76.0 1.00 AC21716 17-Mar-22 EPA 300.0 <br /> Specific Conductance(EC) 614 1.00 umhos/cm AC21714 17-Mar-22 SM 2510 B <br /> Dissolved Oxygen 2.9 0.10 mg/L AC2 t 712 17-Mar-22 EPA 360.1 <br /> Magnesium 8.73 1.50 " AC22122 21-Mar-22 EPA 200.7 <br /> Nitrate as N 0.958 0.400 AC21716 17-Mar-22 EPA 300.0 <br /> Oil&Grease(HEM) ND 3.0 AC22201 22-Mar-22 EPA1664A <br /> pH 7.70 0.0100 pH Units AC217I3 17-Mar-22 SM 4500-H+B <br /> Sodium „ <br /> 89.0 2.00 mg/L AC22122 21-Mar-22 EPA 200.7 <br /> Total Suspended Solids(TSS) 5.0 1.0 ” AC21805 18-Mar-22 SM 2540 D <br /> Total Kjeldahl Nitrogen ND 0.600 AC22107 21-Mar-22 EPA 351.2 <br /> Precision Enviro-Tech. o California ELAP Cert.7#2387 <br /> Page 3 of 10 <br />