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RAN .1) OH OA RO-ECH <br />Analytical Laboratory <br />3935 N. Coronado Ave, Stockton CA. 95204 Phone: (209) 477-8105 <br />CERTIFICATE OF ANALYSIS <br />Chesney Consulting <br />P. 0. BOX 3794 <br />Turlock, CA 95381 <br />Project Number: Chevron -Thornton <br />Project Name: Chevron -Thornton <br />Project Manager: Don Chesney <br />Work Order No.: <br />Conventional Chemistry Parameters by APHA/EPA Methods - Quality Control <br />Analyte Result <br />Reporting <br />Limit Units <br />Spike <br />Level <br />Source <br />Result %REC RPD N <br />Blank (AC21715-BLK1) <br />Total Alkalinity <br />Hydroxide Alkalinity <br />Bicarbonate Alkalinity <br />Carbonate Alkalinity <br />Duplicate (AC21715-DUP1) <br />ND <br />ND <br />ND <br />ND <br />1.00 <br />1.00 <br />1.00 <br />1.00 <br />mg/L <br />Total Alkalinity <br />Reference (AC21715-SRM1) <br />198 1.00 mg/L 198 0.05 <br />Total Alkalinity 10.3 1.00 mg/L 10.0 103 <br />Blank (AC21716-BLK1) <br />Chloride <br />Nitrate as N <br />LCS (AC21716-BS1) <br />ND <br />ND <br />1,00 <br />0.400 <br />mg/L <br />Chloride <br />Nitrate as N <br />LCS Dup (AC21716-BSD1) <br />10.2 <br />2.30 <br />1.00 <br />0.400 <br />rng/L 10.0 <br />2.26 <br />102 <br />102 <br />Chloride <br />Nitrate as N <br />Matrix Spike (AC21716-MS1) <br />10.2 <br />2.39 <br />1 00 <br />() 400 <br />mg I_ 10.0 <br />2.26 <br />102 <br />106 <br />0.9 <br />4 <br />Chloride <br />Nitrate as N <br />Matrix Spike Dup (AC21716-MSD1) <br />16.6 <br />3.10 <br />1 25 <br />0.400 <br />mg L 12.5 <br />2.82 <br />4.41 <br />ND <br />98 <br />110 <br />Precision Enviro-Tech. <> California ELAP Cert. #2387 <br />Page 5 of 10