deciper
EAC 02 055 5XXXX
eac = vermont service center
02 = 2002 (fiscal year Oct - Sep)
055 = day in the fiscal year (fiscal year starts early oct or may be oct 1st, or after audit, not sure. Anyhow, the 055 in this case would point to some time around middle/end of November)
5 = this file is scanned in (electronically accessable)