Environmental

In Montana, the presence of 'polyfluoroalkyl substances' (PFAS) contamination near military installations or airports is a concern because:

APFAS are beneficial to groundwater quality
BPFAS are persistent organic pollutants linked to health effects, found in AFFF firefighting foam used at military bases and airports, and can contaminate groundwater used as drinking water✓ Correct
CPFAS are only found in industrial chemical plants
DPFAS contamination is easily and inexpensively remediated

Explanation

PFAS ('forever chemicals') from aqueous film-forming foam (AFFF) used at military bases and airports have contaminated groundwater near several Montana military installations. They are persistent, potentially toxic at very low concentrations, and very difficult to remediate.

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