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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 />LCS2 Perfluorohexanoic acid (PFHxA)0.025 0.0258 ug/L 103 (70-130)3.130 <br />MBLK Perfluorohexanoic acid (PFHxA)<0.000667 ug/L <br />MRL_CHK Perfluorohexanoic acid (PFHxA)0.002 0.00209 ug/L 104 (50-150) <br />MS_202006300497 Perfluorohexanoic acid (PFHxA)0.002 0.00507 ug/L 90 (50-150)0.0033 <br />DUP_202006300506 Perfluorononanoic acid (PFNA)ND ug/L (0-30)ND <br />LCS1 Perfluorononanoic acid (PFNA)0.025 0.0247 ug/L 99 (70-130) <br />LCS2 Perfluorononanoic acid (PFNA)0.025 0.0251 ug/L 100 (70-130)1.630 <br />MBLK Perfluorononanoic acid (PFNA)<0.000667 ug/L <br />MRL_CHK Perfluorononanoic acid (PFNA)0.002 0.00214 ug/L 107 (50-150) <br />MS_202006300497 Perfluorononanoic acid (PFNA)0.002 0.00464 ug/L 88 (50-150)0.0029 <br />DUP_202006300506 Perfluorooctanesulfonic acid (PFOS)ND ug/L (0-30)ND <br />LCS1 Perfluorooctanesulfonic acid (PFOS)0.023 0.0232 ug/L 100 (70-130) <br />LCS2 Perfluorooctanesulfonic acid (PFOS)0.023 0.0230 ug/L 100 (70-130)0.4330 <br />MBLK Perfluorooctanesulfonic acid (PFOS)<0.000667 ug/L <br />MRL_CHK Perfluorooctanesulfonic acid (PFOS)0.0019 0.00195 ug/L 105 (50-150) <br />MS_202006300497 Perfluorooctanesulfonic acid (PFOS)0.0019 0.0324 ug/L 83 (50-150)0.031 <br />DUP_202006300506 Perfluorooctanoic acid (PFOA)0.00291 ug/L (0-30)0.0034 <br />LCS1 Perfluorooctanoic acid (PFOA)0.025 0.0251 ug/L 100 (70-130) <br />LCS2 Perfluorooctanoic acid (PFOA)0.025 0.0256 ug/L 102 (70-130)2.030 <br />MBLK Perfluorooctanoic acid (PFOA)<0.000667 ug/L <br />MRL_CHK Perfluorooctanoic acid (PFOA)0.002 0.00220 ug/L 110 (50-150) <br />MS_202006300497 Perfluorooctanoic acid (PFOA)0.002 0.0137 ug/L 78 (50-150)0.012 <br />DUP_202006300506 Perfluorotetradecanoic acid (PFTA)ND ug/L (0-30)ND <br />LCS1 Perfluorotetradecanoic acid (PFTA)0.025 0.0271 ug/L 108 (70-130) <br />LCS2 Perfluorotetradecanoic acid (PFTA)0.025 0.0274 ug/L 110 (70-130)1.530 <br />MBLK Perfluorotetradecanoic acid (PFTA)<0.000667 ug/L <br />MRL_CHK Perfluorotetradecanoic acid (PFTA)0.002 0.00256 ug/L 128 (50-150) <br />MS_202006300497 Perfluorotetradecanoic acid (PFTA)0.002 0.00284 ug/L 107 (50-150)ND <br />DUP_202006300506 Perfluorotridecanoic acid (PFTrDA)ND ug/L (0-30)ND <br />LCS1 Perfluorotridecanoic acid (PFTrDA)0.025 0.0251 ug/L 100 (70-130) <br />LCS2 Perfluorotridecanoic acid (PFTrDA)0.025 0.0243 ug/L 97 (70-130)3.230 <br />MBLK Perfluorotridecanoic acid (PFTrDA)<0.000667 ug/L <br />MRL_CHK Perfluorotridecanoic acid (PFTrDA)0.002 0.00209 ug/L 105 (50-150) <br />MS_202006300497 Perfluorotridecanoic acid (PFTrDA)0.002 0.00184 ug/L 92 (50-150)ND <br />DUP_202006300506 Perfluoroundecanoic acid (PFUnA)ND ug/L (0-30)ND <br />LCS1 Perfluoroundecanoic acid (PFUnA)0.025 0.0237 ug/L 95 (70-130) <br />LCS2 Perfluoroundecanoic acid (PFUnA)0.025 0.0251 ug/L 100 (70-130)5.730 <br />MBLK Perfluoroundecanoic acid (PFUnA)<0.000667 ug/L <br />QC Report - Page 8 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 23 of 24 pages