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Alpha Scientific Corporation <br />Environmental Laboratories <br />2616760 Gridley Road, Cerritos, CA 90703 Phone (562) 809-8880 Asc90703@gmail.com <br />03-26-2019 <br />EPA 8260B <br />Batch QA/QC Report <br />Client: Advanced GeoEnvironmental, Inc Lab Job No: AE903043 <br />Project: San Joaquin Cogeneration <br />Matrix: Soil Lab Sample I.D.: AE903043-3 <br />Batch No: 0319-VOAS1 Date Analyzed: 03-19-2019 <br />I. MS/MSD Report <br />Unit: ppb <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 />1,1- <br />Dichloroethene <br />ND 20 20.8 18.0 104.0 90.0 14.4 30 70-130 <br />Benzene ND 20 23.3 19.5 116.5 97.5 17.8 30 70-130 <br />Trichloro- <br />ethene <br />ND 20 21.4 18.1 107.0 90.5 16.7 30 70-130 <br />Toluene ND 20 23.1 19.3 115.5 96.5 17.9 30 70-130 <br />Chlorobenzene ND 20 23.7 19.9 118.5 99.5 17.4 30 70-130 <br />II. LCS Result <br />Unit: ppb <br />Analyte LCS Value True Value Rec.% Accept. Limit <br />1,1-Dichloroethene 17.1 20.0 85.5 80-120 <br />Benzene 20.1 20.0 100.5 80-120 <br />Trichloro-ethene 18.3 20.0 91.5 80-120 <br />Toluene 20.2 20.0 101.0 80-120 <br />Chlorobenzene 20.5 20.0 102.5 80-120 <br />ND: Not Detected (at the specified limit).