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GAO Review of DOD Drinking Water Contaminants (code 100947) Follow-up Questions for the Department of the Navy Note: These questions are addressed to the Department of the Navy, to answer on behalf of both the Navy and the Marine Corps.

Last Updated: June 10, 2016 Frequently Asked Questions: Perfluorinated Compounds (PFC)/ Perfluoroalkyl Substances (PFAS) I OP m i l I'NAI DON DM ONLY Approved by: DASN(E) l US00007459 Last Updated: June 10, 2016 1 Hil (111', SOURCE OF INFORMATION........................................................................................................................... 5 GENERAL....................................................................................................................................................... 5 What is PFC or PFAS?................................................................................................................................