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Alpha Scientific Corporation <br />Environmental Laboratories <br />616760 Gridley Road, Cerritos, CA 90703 Phone (562) 809-8880 Asc90703@gmail.com <br />04-01-2019 <br />EPA 6010B (Pb) <br />Batch QA/QC Report <br />Client: Advanced GeoEnvironmental, Inc Lab Job No: AE903037/43A <br />Project: San Joaquin Cogeneration <br />Matrix: Soil Lab Sample I.D.: AE903043-22 <br />Batch No.: 0329A-MS1 Date Analyzed: 03-29-2019 <br />I. MS/MSD Report <br />Unit: ppm <br />Analyte Sample <br />Conc. <br />Spike <br />Conc. <br />MS MSD MS <br />%Rec. <br />MSD <br />%Rec. <br />% RPD %RPD <br />Accept. <br />Limit <br />%Rec <br />Accept. <br />Limit <br />Lead (Pb) 8.2 50 58.95 59.58 101.4 102.4 1.1 30 70-130 <br />II. LCS Result <br />Unit: ppm <br />Analyte EPA Method LCS Value True Value Rec.% Accept. Limit <br />Lead (Pb) 6010B 9.599 10.0 96.0 80-120 <br /> <br />ND: Not Detected (at the specified limit).