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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 />MBLK Perfluorohexanoic acid (PFHxA)<0.000667 ug/L <br />MRL_CHK Perfluorohexanoic acid (PFHxA)0.002 0.00210 ug/L 105 (50-150) <br />MS1_202006300488 Perfluorohexanoic acid (PFHxA)0.025 0.0264 ug/L 105 (70-130)ND <br />DUP_202006300494 Perfluorononanoic acid (PFNA)ND ug/L (0-30)ND <br />LCS3 Perfluorononanoic acid (PFNA)0.05 0.0497 ug/L 99 (70-130) <br />LCS4 Perfluorononanoic acid (PFNA)0.05 0.0507 ug/L 101 (70-130)2.030 <br />MBLK Perfluorononanoic acid (PFNA)<0.000667 ug/L <br />MRL_CHK Perfluorononanoic acid (PFNA)0.002 0.00221 ug/L 110 (50-150) <br />MS1_202006300488 Perfluorononanoic acid (PFNA)0.025 0.0256 ug/L 102 (70-130)ND <br />DUP_202006300494 Perfluorooctanesulfonic acid (PFOS)ND ug/L (0-30)ND <br />LCS3 Perfluorooctanesulfonic acid (PFOS)0.046 0.0470 ug/L 102 (70-130) <br />LCS4 Perfluorooctanesulfonic acid (PFOS)0.046 0.0459 ug/L 99 (70-130)2.430 <br />MBLK Perfluorooctanesulfonic acid (PFOS)<0.000667 ug/L <br />MRL_CHK Perfluorooctanesulfonic acid (PFOS)0.0019 0.00198 ug/L 107 (50-150) <br />MS1_202006300488 Perfluorooctanesulfonic acid (PFOS)0.023 0.0250 ug/L 108 (70-130)ND <br />DUP_202006300494 Perfluorooctanoic acid (PFOA)ND ug/L (0-30)ND <br />LCS3 Perfluorooctanoic acid (PFOA)0.05 0.0503 ug/L 101 (70-130) <br />LCS4 Perfluorooctanoic acid (PFOA)0.05 0.0508 ug/L 102 (70-130)0.9930 <br />MBLK Perfluorooctanoic acid (PFOA)<0.000667 ug/L <br />MRL_CHK Perfluorooctanoic acid (PFOA)0.002 0.00218 ug/L 109 (50-150) <br />MS1_202006300488 Perfluorooctanoic acid (PFOA)0.025 0.0262 ug/L 104 (70-130)ND <br />DUP_202006300494 Perfluorotetradecanoic acid (PFTA)ND ug/L (0-30)ND <br />LCS3 Perfluorotetradecanoic acid (PFTA)0.05 0.0532 ug/L 106 (70-130) <br />LCS4 Perfluorotetradecanoic acid (PFTA)0.05 0.0584 ug/L 117 (70-130)9.330 <br />MBLK Perfluorotetradecanoic acid (PFTA)<0.000667 ug/L <br />MRL_CHK Perfluorotetradecanoic acid (PFTA)0.002 0.00250 ug/L 125 (50-150) <br />MS1_202006300488 Perfluorotetradecanoic acid (PFTA)0.025 0.0267 ug/L 105 (70-130)ND <br />DUP_202006300494 Perfluorotridecanoic acid (PFTrDA)ND ug/L (0-30)ND <br />LCS3 Perfluorotridecanoic acid (PFTrDA)0.05 0.0528 ug/L 106 (70-130) <br />LCS4 Perfluorotridecanoic acid (PFTrDA)0.05 0.0519 ug/L 104 (70-130)1.730 <br />MBLK Perfluorotridecanoic acid (PFTrDA)<0.000667 ug/L <br />MRL_CHK Perfluorotridecanoic acid (PFTrDA)0.002 0.00204 ug/L 102 (50-150) <br />MS1_202006300488 Perfluorotridecanoic acid (PFTrDA)0.025 0.0261 ug/L 104 (70-130)ND <br />DUP_202006300494 Perfluoroundecanoic acid (PFUnA)ND ug/L (0-30)ND <br />LCS3 Perfluoroundecanoic acid (PFUnA)0.05 0.0489 ug/L 98 (70-130) <br />LCS4 Perfluoroundecanoic acid (PFUnA)0.05 0.0495 ug/L 99 (70-130)1.230 <br />MBLK Perfluoroundecanoic acid (PFUnA)<0.000667 ug/L <br />MRL_CHK Perfluoroundecanoic acid (PFUnA)0.002 0.00207 ug/L 104 (50-150) <br />QC Report - Page 4 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 19 of 24 pages