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Alpha Scientific Corporation <br /> Environmental Laboratories <br /> 12- 03 -2019 <br /> EPA 8260B <br /> Batch QA/QC Report <br /> Client : Advanced GeoEnvironmental , Inc Lab Job No : AE911080 <br /> Project : DBL Rentals Property <br /> Matrix : Soil Lab Sample I . D . : P1911075 - 1 <br /> Batch No : 1126 -VOAS1 Date Analyzed : 11 - 26-2019 <br /> I. MS/MSD Report <br /> Unit : ppb <br /> Analyte Sample Spike MS MSD MS MSD % RPD %RPD %Rec <br /> Cone . Cone . %Rec . %Rec . Accept . Accept . <br /> Limit Limit <br /> 151 - ND 20 2069 1908 104 . 5 99 . 0 5 . 4 30 70 - 130 <br /> Dichloroethene <br /> Benzene ND 20 2209 21 . 2 114 . 5 106 . 0 7 . 7 30 70- 130 <br /> Trichloro- ND 20 23 . 9 21 . 4 119 . 5 107 . 0 11 . 0 30 70- 130 <br /> ethene <br /> Toluene ND 20 2205 2003 112 . 5 101 . 5 10 . 3 30 70430 <br /> Chlorobenzene ND 20 2207 2004 113 . 5 102 . 0 10 . 7 30 70 - 130 <br /> II. LCS Result <br /> Unit : ppb <br /> Analyte LCS Value True Value Rec . % Accept. Limit <br /> l , l -Dichloroethene 16 . 7 2000 83 . 5 80420 <br /> Benzene 2002 2000 101 . 0 80- 120 <br /> Trichloro- ethene 21 . 7 20 . 0 108 . 5 80 - 120 <br /> Toluene 19 . 7 2000 98 . 5 80 - 120 <br /> Chlorobenzene 2001 2000 100 . 5 80- 120 <br /> ND : Not Detected (at the specified limit) . <br /> i <br /> 16760 Gridley Road, Cerritos , CA 90703 11 Phone ( 562) 809- 8880 Asc90703@gmail . com <br />