[Code of Federal Regulations] [Title 45, Volume 3] [Revised as of October 1, 2005] From the U.S. Government Printing Office via GPO Access [CITE: 45CFR620.315] [Page 169] TITLE 45--PUBLIC WELFARE CHAPTER VI--NATIONAL SCIENCE FOUNDATION PART 620_GOVERNMENTWIDE DEBARMENT AND SUSPENSION (NONPROCUREMENT) --Table of Contents Subpart C_Responsibilities of Participants Regarding Transactions Sec. 620.315 May I use the services of an excluded person as a principal under a covered transaction? (a) You as a participant may continue to use the services of an excluded person as a principal under a covered transaction if you were using the services of that person in the transaction before the person was excluded. However, you are not required to continue using that person's services as a principal. You should make a decision about whether to discontinue that person's services only after a thorough review to ensure that the action is proper and appropriate. (b) You may not begin to use the services of an excluded person as a principal under a covered transaction unless the National Science Foundation grants an exception under Sec. 620.120.