There are certainly some important take-aways in this article. What certainly hit home was the reference to high turnover. In my experience, attracting and retaining (perceived) top 1% developers is no small feat. It's damaging to a project when a "rockstar" developer builds out a product set in her chosen (often bleeding edge) framework / language, and then departs at the sign of another "fun" opportunity elsewhere.…
Personnel retention is easy - just demonstrate on any level that the contributions of the workforce is appreciated. Since I'm in the DC area too, with clearance, the number you're throwing around are a bit of a stretch. We've got junior developers in the high $30K range and senior in the mid $60K range.
I do know that some agencies tried to give peanut wages to certain fresh-out-of-college students, but everyone I knew scoffed at it and found positions that paid twice as much elsewhere.