PFAS Meeting Book MYM 2023

EPA 1633 – SLV report – fish tissue

• Limit of Quantification Verification analysis – prepared at 2 times the LOQ • All target analytes were within the 70-130% interim recovery limits with two exceptions – PFDoS at 61.35% and MeFOSE at 237.5%. This method does not look for PFUnDS or PFTrDS • Seven EIS exceeded the interim acceptance criteria (50-200%) – 13 C 2 PFTeDA (47.9%), D3-NMeFOSAA, D5-NEtFOSAA, D7-NMeFOSE, and D9-NEtFOSE. The upper limit was exceeded for 13 C 2 -4:2 FTS (221.5%) and D5-NEtFOSAA • LOQs ranged from 0.3 ng/g to 10 ng/g for solids, sediments, biosolids and tissues (4, 6, and 10*LOQ are low, medium, and high spiking levels)