1. Application by Boston & Maine Corporation for a Preemption Determination as to Massachusetts' Definitions of
NOTICES: Preemption determinations—; Boston & Maine Corp.,
RSPA is extending the period for interested parties to submit
comments on an application by Boston & Maine Corporation for an
administrative determination whether Federal hazardous materials
transportation law preempts the Commonwealth of Massachusetts'
definitions of ``hazardous materials'' as applied to hazardous
materials transportation.