OMB Circular A-21 C. 4. (d) could provide guidance for such situations:

 (3) Direct cost allocation principles. If a cost benefits
two or more projects
 or activities in proportions that can be
determined without undue effort or cost, the
 cost should be allocated to the projects based
on the proportional benefit. If a cost
 benefits two or more projects or activities in
proportions that cannot be determined
 because of the interrelationship of the work
involved, then, notwithstanding subsection
 b, the costs may be allocated or transferred to
benefited projects on any reasonable
 basis, consistent with subsections d.(1) and (2).

At 06:00 PM 2/18/2003 -0800, you wrote:
>I am interested in how other universities might handle this situation:  A
>PI is funded by a variety of USAID subcontractors.  His activities take
>place in a variety of countries in close proximity to one another. It
>therefore makes sense that on a flight to project A's site, he might stop
>off in route to do some work for Project B at another site.  This makes it
>difficult to determine which of the two project accounts should be charged
>for the travel or how much each project account should be charged.
>
>I am interested in how other universities handle similar situations.
>
>Pamela F. Miller, Ph.D.
>Director, Office of Sponsored Projects
>The University of San Francisco
>2130 Fulton Street
>San Francisco, CA  94117-1080
>TEL  415-422-5368
>FAX  415-422-6222
>EMAIL  xxxxxx@usfca.edu
>
>
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