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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 />03-25-2019 <br />EPA 8260B <br />Batch QA/QC Report <br />Client: Advanced GeoEnvironmental, Inc Lab Job No: AE903029 <br />Project: San Joaquin Cogeneration <br />Matrix: Soil Lab Sample I.D.: AE903029-1 <br />Batch No: 0313-VOAS1 Date Analyzed: 03-13-2019 <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 18.2 21.7 91.0 108.5 17.5 30 70-130 <br />Benzene ND 20 19.6 23.3 98.0 116.5 17.2 30 70-130 <br />Trichloro- <br />ethene <br />ND 20 18.7 22.1 93.5 110.5 16.7 30 70-130 <br />Toluene ND 20 19.8 23.0 99.0 115.0 15.0 30 70-130 <br />Chlorobenzene ND 20 20.3 23.9 101.5 119.5 16.3 30 70-130 <br />II. LCS Result <br />Unit: ppb <br />Analyte LCS Value True Value Rec.% Accept. Limit <br />1,1-Dichloroethene 19.6 20.0 98.0 80-120 <br />Benzene 20.9 20.0 104.5 80-120 <br />Trichloro-ethene 20.1 20.0 100.5 80-120 <br />Toluene 21.6 20.0 108.0 80-120 <br />Chlorobenzene 21.6 20.0 108.0 80-120 <br />ND: Not Detected (at the specified limit).