Reassign those living in Northern Virginia to satellite offices in Hagerstown, Maryland (and vice-versa).
After two weeks sitting in beltway traffic the resignation letters will come flooding in.
Feds aren't that smart. I was transferred to an office 25 miles from my house, but I go against traffic on Hwy 114, so my commute is usually 30 minutes.
If I qualify for the $40K, I'm gone. Within two miles of my house are 10-15 new office buildings, I'll be fine. I've already calculated I can pay all the household bills on my pension and SS.