Budget Justification  A budget justification is a narrative that
explains how the PI plans to spend grant funds. Not all sponsors
require one; guidelines specify whether one is needed.
Typically, they are organized using the same categories used in
the sponsor’s budget form and include enough detail to enable
the sponsor to determine how the budget amounts were derived.
Some sponsors, such as NSF and NIH, have specific requirements.
NSF expects dollar amounts and wants to know how you derived
them and why each line item is needed for the project. Explain
the source of each cost (your annual base salary, number of
months, the percentage of annual increments, the fringe rate,
the College’s F&A rate, the basis for travel and conference
estimates, the basis for daily subsistence rates, etc.). Lab
supplies needn’t be itemized exhaustively; they can be listed by
category (e.g., “consumables”).  Do not include anything that
could be construed as “implied cost share.” Avoid saying, for
example, that the PI or the C