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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 />MRL_CHK 13C4-PFOS– IS#2 (I)100 107 %107 (50-150) <br />MS_202006300497 13C4-PFOS– IS#2 (I)100 105 %105 (50-150) <br />DUP_202006300506 4,8-dioxa-3H-perfluorononanoic acid (ADONA)ND ug/L (0-30)ND <br />LCS1 4,8-dioxa-3H-perfluorononanoic acid (ADONA)0.024 0.0235 ug/L 99 (70-130) <br />LCS2 4,8-dioxa-3H-perfluorononanoic acid (ADONA)0.024 0.0236 ug/L 100 (70-130)0.4330 <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 0.00198 ug/L 105 (50-150) <br />MS_202006300497 4,8-dioxa-3H-perfluorononanoic acid (ADONA)0.0019 0.00179 ug/L 95 (50-150)ND <br />DUP_202006300506 9-chlorohexadecafluoro-3-oxanone-sulfonic acid ND ug/L (0-30)ND <br />LCS1 9-chlorohexadecafluoro-3-oxanone-sulfonic acid 0.023 0.0237 ug/L 102 (70-130) <br />LCS2 9-chlorohexadecafluoro-3-oxanone-sulfonic acid 0.023 0.0234 ug/L 100 (70-130)1.330 <br />MBLK 9-chlorohexadecafluoro-3-oxanone-sulfonic acid <0.000667 ug/L <br />MRL_CHK 9-chlorohexadecafluoro-3-oxanone-sulfonic acid 0.0019 0.00188 ug/L 101 (50-150) <br />MS_202006300497 9-chlorohexadecafluoro-3-oxanone-sulfonic acid 0.0019 0.00176 ug/L 95 (50-150)ND <br />DUP_202006300506 d3-NMeFOSAA (I)117 %117 (50-150) <br />LCS1 d3-NMeFOSAA (I)100 110 %111 (50-150) <br />LCS2 d3-NMeFOSAA (I)100 108 %108 (50-150) <br />MBLK d3-NMeFOSAA (I)112 %112 (50-150) <br />MRL_CHK d3-NMeFOSAA (I)100 110 %110 (50-150) <br />MS_202006300497 d3-NMeFOSAA (I)100 112 %112 (50-150) <br />DUP_202006300506 d5-NEtFOSAA (S)94.3 %94 (70-130) <br />LCS1 d5-NEtFOSAA (S)100 91.5 %91 (70-130) <br />LCS2 d5-NEtFOSAA (S)100 92.0 %92 (70-130) <br />MBLK d5-NEtFOSAA (S)97.1 %97 (70-130) <br />MRL_CHK d5-NEtFOSAA (S)100 93.7 %94 (70-130) <br />MS_202006300497 d5-NEtFOSAA (S)100 91.9 %92 (70-130) <br />DUP_202006300506 Hexafluoropropylene oxide dimer acid (HFPO-DA)ND ug/L (0-30)ND <br />LCS1 Hexafluoropropylene oxide dimer acid (HFPO-DA)0.025 0.0236 ug/L 95 (70-130) <br />LCS2 Hexafluoropropylene oxide dimer acid (HFPO-DA)0.025 0.0238 ug/L 95 (70-130)0.4230 <br />MBLK Hexafluoropropylene oxide dimer acid (HFPO-DA)<0.001667 ug/L <br />MRL_CHK Hexafluoropropylene oxide dimer acid (HFPO-DA)0.002 0.00195 ug/L 98 (50-150) <br />MS_202006300497 Hexafluoropropylene oxide dimer acid (HFPO-DA)0.002 0.00181 ug/L 91 (50-150)ND <br />DUP_202006300506 N-ethyl Perfluorooctanesulfonamidoacetic acid ND ug/L (0-30)ND <br />LCS1 N-ethyl Perfluorooctanesulfonamidoacetic acid 0.025 0.0237 ug/L 95 (70-130) <br />LCS2 N-ethyl Perfluorooctanesulfonamidoacetic acid 0.025 0.0240 ug/L 96 (70-130)1.330 <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 />MS_202006300497 N-ethyl Perfluorooctanesulfonamidoacetic acid 0.002 0.00194 ug/L 97 (50-150)ND <br />QC Report - Page 6 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 21 of 24 pages