The statement contains two distinct factual claims: (1) that PCBs were manufactured at a General Electric plant employing thousands, which is historically accurate for GE facilities in upstate New York (e.g., Hudson Falls and Fort Edward) that produced PCBs and employed thousands; and (2) that PFAs are not being generated locally but are coming from Air Force bases in Pennsylvania and surrounding states, which is broadly accurate regarding the source of PFAS contamination at military bases, though the specific geographic scope and transport mechanisms would require more context. Both core factual assertions check out, making the statement substantially true.

The claim that PCBs were "made" at the GE plant is inaccurate—PCBs were manufactured by Monsanto, though GE used them in capacitors. While the GE plants employed thousands and discharged PCBs into the Hudson River, the statement misrepresents the source of PCBs. The PFAS claim about Air Force bases in Pennsylvania is plausible but does not correct the primary inaccuracy about PCB production.

It is true that PCBs were historically manufactured at General Electric plants and that those plants employed thousands of workers. However, the claim that PFAs are only coming from Air Force bases in Pennsylvania and that none are generated locally is misleading; PFAs contamination in the region also stems from various industrial sources and firefighting foam use, not solely from the bases.

The statement accurately reflects that PCBs were manufactured at GE plants and that PFAS contamination is commonly associated with military bases, though specific location details cannot be fully verified without more context.