According to this post, admittedly uncorroborated, but certainly something that could be looked into and verified, it's also happening at Camp LeJeune.
Can you regulars with military ties do some asking around about this with your contacts? It would be very helpful if we could get documents, memos, reports, whatever, to prove it.
UPDATE: I just found this solid waste management plan from LeJeune, albeit it's from 2008, before this story broke out and Baucus and Tester became involved. From page 5-13:
Brass from spent ammunition cartridges must be sorted from unfired ammunition at the point of generation. All ammunition items must be inspected by the generating unit and when they are turned in to the satellite sites at the Rifle Range and School of Infantry, the MRF, or DRMO-Lejeune, shall be accompanied by a signed, typed statement to read, "This material has been inspected by (signing individual) and it contains no live rounds/live blanks, unfired primers, hazardous waste, hazardous materials, or other dangerous materials." Spent brass shells are collected, mutilated, and stored until they are sold and removed by a contractor.