PFAS is one of CMA's core specialties. Using the patented Trident Probe, we've successfully conducted PFAS sampling efforts ranging from ambient background surveys to sites with known, significant contamination. Our field and equipment blanks are reliably PFAS-free — a critical distinction in an analyte class where sampling gear itself is a common contamination source — and our field methods are built specifically for the groundwater-surface water interface, where PFAS fate and transport is hardest to characterize with conventional monitoring wells alone.
PFAS behaves differently at a discharge zone than it does in a static monitoring well. Concentrations can shift across a tidal cycle, dilute unevenly as fresh groundwater mixes with surface water, and vary sharply over short horizontal distances near the point of discharge — patterns a handful of fixed wells can miss entirely.
PFAS sampling also has a contamination problem unlike almost any other analyte class: PFAS is in waterproof gear, some sampling tubing, and countless consumer products, so field protocol matters as much as the lab method. Our field team follows PFAS-specific sampling protocols, and the Trident Probe's small-volume, targeted sampling approach reduces the equipment and exposure pathways that create false positives.
View the Full PFAS Analyte Panel
EPA Method 1633A is the current standard for PFAS in water, soil, sediment, and porewater/tissue matrices — 40 analytes across five chemical classes.
PFBA, PFPeA, PFHxA, PFHpA, PFOA, PFNA, PFDA, PFUnA, PFDoA, PFTrDA, PFTeDA
PFBS, PFPeS, PFHxS, PFHpS, PFOS, PFNS, PFDS, PFDoS
4:2 FTS, 6:2 FTS, 8:2 FTS, 3:3 FTCA, 5:3 FTCA, 7:3 FTCA
FOSA, N-MeFOSAA, N-EtFOSAA, N-MeFOSA, N-EtFOSA, N-MeFOSE, N-EtFOSE
HFPO-DA (GenX), ADONA, 9Cl-PF3ONS, 11Cl-PF3OUdS, NFDHA, PFMPA, PFMBA, PFEESA
Need PFOA, PFOS, or GenX in a matrix we haven't listed, or a state-specific short list instead of the full 40? Contact us — or see our full analyte index covering PAHs, PCBs, metals, VOCs, and every other panel we sample for.
Whether you're mapping an AFFF-impacted discharge zone or need ambient porewater PFAS data for a baseline study, we can help you design a sampling program that gets you defensible data the first time.
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