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Alpha Scientific Corporation <br />Environmental Laboratories <br />816760 Gridley Road, Cerritos, CA 90703 Phone (562) 809-8880 Asc90703@gmail.com <br />04-09-2019 <br />EPA 8260B <br />Batch QA/QC Report <br />Client: Advanced GeoEnvironmental, Inc Lab Job No: AE904009 <br />Project: San Joaquin Cogeneration <br />Matrix: Soil Lab Sample I.D.: AE904009-1 <br />Batch No: 0404-VOAS1 Date Analyzed: 04-04-2019 <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 17.7 19.8 88.5 99.0 11.2 30 70-130 <br />Benzene ND 20 20.3 22.4 101.5 112.0 9.8 30 70-130 <br />Trichloro- <br />ethene <br />ND 20 19.7 21.9 98.5 109.5 10.6 30 70-130 <br />Toluene ND 20 20.4 23.0 102.0 115.0 12.0 30 70-130 <br />Chlorobenzene ND 20 20.3 22.5 101.5 112.5 10.3 30 70-130 <br />II. LCS Result <br />Unit: ppb <br />Analyte LCS Value True Value Rec.% Accept. Limit <br />1,1-Dichloroethene 17.8 20.0 89.0 80-120 <br />Benzene 20.2 20.0 101.0 80-120 <br />Trichloro-ethene 19.3 20.0 96.5 80-120 <br />Toluene 20.5 20.0 102.5 80-120 <br />Chlorobenzene 20.9 20.0 104.5 80-120 <br />ND: Not Detected (at the specified limit).