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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 />LCS3 N-methyl Perfluorooctanesulfonamidoacetic acid 0.05 0.0471 ug/L 94 (70-130) <br />LCS4 N-methyl Perfluorooctanesulfonamidoacetic acid 0.05 0.0484 ug/L 97 (70-130)2.730 <br />MBLK N-methyl Perfluorooctanesulfonamidoacetic acid <0.000667 ug/L <br />MRL_CHK N-methyl Perfluorooctanesulfonamidoacetic acid 0.002 0.00198 ug/L 99 (50-150) <br />MS1_202006300488 N-methyl Perfluorooctanesulfonamidoacetic acid 0.025 0.0259 ug/L 104 (70-130)ND <br />DUP_202006300494 Perfluorobutanesulfonic acid (PFBS)ND ug/L (0-30)ND <br />LCS3 Perfluorobutanesulfonic acid (PFBS)0.044 0.0440 ug/L 99 (70-130) <br />LCS4 Perfluorobutanesulfonic acid (PFBS)0.044 0.0413 ug/L 93 (70-130)6.330 <br />MBLK Perfluorobutanesulfonic acid (PFBS)<0.000667 ug/L <br />MRL_CHK Perfluorobutanesulfonic acid (PFBS)0.0018 0.00179 ug/L 101 (50-150) <br />MS1_202006300488 Perfluorobutanesulfonic acid (PFBS)0.022 0.0233 ug/L 105 (70-130)ND <br />DUP_202006300494 Perfluorodecanoic acid (PFDA)ND ug/L (0-30)ND <br />LCS3 Perfluorodecanoic acid (PFDA)0.05 0.0483 ug/L 97 (70-130) <br />LCS4 Perfluorodecanoic acid (PFDA)0.05 0.0496 ug/L 99 (70-130)2.730 <br />MBLK Perfluorodecanoic acid (PFDA)<0.000667 ug/L <br />MRL_CHK Perfluorodecanoic acid (PFDA)0.002 0.00197 ug/L 98 (50-150) <br />MS1_202006300488 Perfluorodecanoic acid (PFDA)0.025 0.0245 ug/L 98 (70-130)ND <br />DUP_202006300494 Perfluorododecanoic acid (PFDoA)ND ug/L (0-30)ND <br />LCS3 Perfluorododecanoic acid (PFDoA)0.05 0.0528 ug/L 106 (70-130) <br />LCS4 Perfluorododecanoic acid (PFDoA)0.05 0.0512 ug/L 102 (70-130)3.130 <br />MBLK Perfluorododecanoic acid (PFDoA)<0.000667 ug/L <br />MRL_CHK Perfluorododecanoic acid (PFDoA)0.002 0.00209 ug/L 104 (50-150) <br />MS1_202006300488 Perfluorododecanoic acid (PFDoA)0.025 0.0273 ug/L 109 (70-130)ND <br />DUP_202006300494 Perfluoroheptanoic acid (PFHpA)ND ug/L (0-30)ND <br />LCS3 Perfluoroheptanoic acid (PFHpA)0.05 0.0480 ug/L 96 (70-130) <br />LCS4 Perfluoroheptanoic acid (PFHpA)0.05 0.0527 ug/L 105 (70-130)9.330 <br />MBLK Perfluoroheptanoic acid (PFHpA)<0.000667 ug/L <br />MRL_CHK Perfluoroheptanoic acid (PFHpA)0.002 0.00216 ug/L 108 (50-150) <br />MS1_202006300488 Perfluoroheptanoic acid (PFHpA)0.025 0.0258 ug/L 103 (70-130)ND <br />DUP_202006300494 Perfluorohexanesulfonic acid (PFHxS)ND ug/L (0-30)ND <br />LCS3 Perfluorohexanesulfonic acid (PFHxS)0.046 0.0462 ug/L 101 (70-130) <br />LCS4 Perfluorohexanesulfonic acid (PFHxS)0.046 0.0477 ug/L 105 (70-130)3.230 <br />MBLK Perfluorohexanesulfonic acid (PFHxS)<0.000667 ug/L <br />MRL_CHK Perfluorohexanesulfonic acid (PFHxS)0.0018 0.00192 ug/L 105 (50-150) <br />MS1_202006300488 Perfluorohexanesulfonic acid (PFHxS)0.023 0.0248 ug/L 109 (70-130)ND <br />DUP_202006300494 Perfluorohexanoic acid (PFHxA)0.00227 ug/L (0-30)0.0022 <br />LCS3 Perfluorohexanoic acid (PFHxA)0.05 0.0491 ug/L 98 (70-130) <br />LCS4 Perfluorohexanoic acid (PFHxA)0.05 0.0492 ug/L 99 (70-130)0.2030 <br />QC Report - Page 3 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 18 of 24 pages