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Laboratory QC <br />Caltest Analytical Laboratory <br />QC Type Analyte Spiked Limits (%)Recovered Units Yield(%)Native <br />RPD <br />Limit(%)RPD% <br />Tel: (626) 386-1100 <br />Fax: (866) 988-3757 <br />1 800 566 LABS (1 800 566 5227) <br />878886 <br />SUBCONTRACT <br />PFAS <br />Report: <br />Project: <br />Group: <br />MS1_202006300488 13C4-PFOS– IS#2 (I)100 103 %103 (50-150) <br />DUP_202006300494 4,8-dioxa-3H-perfluorononanoic acid (ADONA)ND ug/L (0-30)ND <br />LCS3 4,8-dioxa-3H-perfluorononanoic acid (ADONA)0.049 0.0458 ug/L 94 (70-130) <br />LCS4 4,8-dioxa-3H-perfluorononanoic acid (ADONA)0.049 0.0468 ug/L 97 (70-130)2.230 <br />MBLK 4,8-dioxa-3H-perfluorononanoic acid (ADONA)<0.000667 ug/L <br />MRL_CHK 4,8-dioxa-3H-perfluorononanoic acid (ADONA)0.0019 0.00192 ug/L 102 (50-150) <br />MS1_202006300488 4,8-dioxa-3H-perfluorononanoic acid (ADONA)0.024 0.0245 ug/L 104 (70-130)ND <br />DUP_202006300494 9-chlorohexadecafluoro-3-oxanone-sulfonic acid ND ug/L (0-30)ND <br />LCS3 9-chlorohexadecafluoro-3-oxanone-sulfonic acid 0.047 0.0461 ug/L 99 (70-130) <br />LCS4 9-chlorohexadecafluoro-3-oxanone-sulfonic acid 0.047 0.0470 ug/L 101 (70-130)1.930 <br />MBLK 9-chlorohexadecafluoro-3-oxanone-sulfonic acid <0.000667 ug/L <br />MRL_CHK 9-chlorohexadecafluoro-3-oxanone-sulfonic acid 0.0019 0.00191 ug/L 103 (50-150) <br />MS1_202006300488 9-chlorohexadecafluoro-3-oxanone-sulfonic acid 0.023 0.0240 ug/L 103 (70-130)ND <br />DUP_202006300494 d3-NMeFOSAA (I)95.9 %96 (50-150) <br />LCS3 d3-NMeFOSAA (I)100 110 %110 (50-150) <br />LCS4 d3-NMeFOSAA (I)100 99.8 %100 (50-150) <br />MBLK d3-NMeFOSAA (I)100 %101 (50-150) <br />MRL_CHK d3-NMeFOSAA (I)100 100 %100 (50-150) <br />MS1_202006300488 d3-NMeFOSAA (I)100 109 %109 (50-150) <br />DUP_202006300494 d5-NEtFOSAA (S)104 %104 (70-130) <br />LCS3 d5-NEtFOSAA (S)100 95.6 %96 (70-130) <br />LCS4 d5-NEtFOSAA (S)100 98.8 %99 (70-130) <br />MBLK d5-NEtFOSAA (S)102 %102 (70-130) <br />MRL_CHK d5-NEtFOSAA (S)100 99.1 %99 (70-130) <br />MS1_202006300488 d5-NEtFOSAA (S)100 98.2 %98 (70-130) <br />DUP_202006300494 Hexafluoropropylene oxide dimer acid (HFPO-DA)ND ug/L (0-30)ND <br />LCS3 Hexafluoropropylene oxide dimer acid (HFPO-DA)0.05 0.0471 ug/L 94 (70-130) <br />LCS4 Hexafluoropropylene oxide dimer acid (HFPO-DA)0.05 0.0466 ug/L 93 (70-130)1.130 <br />MBLK Hexafluoropropylene oxide dimer acid (HFPO-DA)<0.001667 ug/L <br />MRL_CHK Hexafluoropropylene oxide dimer acid (HFPO-DA)0.002 0.00184 ug/L 92 (50-150) <br />MS1_202006300488 Hexafluoropropylene oxide dimer acid (HFPO-DA)0.025 0.0240 ug/L 96 (70-130)ND <br />DUP_202006300494 N-ethyl Perfluorooctanesulfonamidoacetic acid ND ug/L (0-30)ND <br />LCS3 N-ethyl Perfluorooctanesulfonamidoacetic acid 0.05 0.0468 ug/L 94 (70-130) <br />LCS4 N-ethyl Perfluorooctanesulfonamidoacetic acid 0.05 0.0485 ug/L 97 (70-130)3.630 <br />MBLK N-ethyl Perfluorooctanesulfonamidoacetic acid <0.000667 ug/L <br />MRL_CHK N-ethyl Perfluorooctanesulfonamidoacetic acid 0.002 0.00202 ug/L 101 (50-150) <br />MS1_202006300488 N-ethyl Perfluorooctanesulfonamidoacetic acid 0.025 0.0252 ug/L 101 (70-130)ND <br />DUP_202006300494 N-methyl Perfluorooctanesulfonamidoacetic acid ND ug/L (0-30)ND <br />QC Report - Page 2 of 9 <br />Spike recovery is already corrected for native results. <br />Spikes which exceed Limits and Method Blanks with positive results are highlighted by Underlining. <br />Criteria for MS and Dup are advisory only, batch control is based on LCS. Criteria for duplicates are advisory only, unless otherwise specified in the method. <br />RPD not calculated for LCS2 when different a concentration than LCS1 is used. <br />RPD not calculated for Duplicates when the result is not five times the MRL (Minimum Reporting Level). <br />(S) - Indicates surrogate compound. <br /> (I) - Indicates internal standard compound. <br />Page 17 of 24 pages