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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 Perfluoroundecanoic acid (PFUnA)0.002 0.00209 ug/L 104 (50-150) <br />MS_202006300497 Perfluoroundecanoic acid (PFUnA)0.002 0.00188 ug/L 94 (50-150)ND <br />QC Report - Page 9 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 24 of 24 pages