[Code of Federal Regulations]
[Title 50, Volume 7]
[Revised as of January 1, 2007]
From the U.S. Government Printing Office via GPO Access
[CITE: 50CFR221.42]

[Page 103-104]
 
                    TITLE 50--WILDLIFE AND FISHERIES
 
  CHAPTER II--NATIONAL MARINE FISHERIES SERVICE, NATIONAL OCEANIC AND 
           ATMOSPHERIC ADMINISTRATION, DEPARTMENT OF COMMERCE
 
PART 221_PRESCRIPTIONS IN FERC HYDROPOWER LICENSES--Table of Contents
 
                        Subpart B_Hearing Process
 
Sec. 221.42  When must a party supplement or amend information it 

has previously provided?

    (a) Discovery. A party must promptly supplement or amend any prior 
response to a discovery request if it learns that the response:
    (1) Was incomplete or incorrect when made; or
    (2) Though complete and correct when made, is now incomplete or 
incorrect in any material respect.
    (b) Witnesses and exhibits. (1) Within 5 days after the date set for 
completion of discovery, each party must file an updated version of the 
list of witnesses and exhibits required under Sec. Sec. 221.21(c), 
221.22(c), or 221.24(c).
    (2) If a party wishes to include any new witness or exhibit on its 
updated list, it must provide an explanation of why it was not feasible 
for the party to include the witness or exhibit on its list under 
Sec. Sec. 221.21(c), 221.22(c), or 221.24(c).
    (c) Failure to disclose. (1) A party that fails to disclose 
information required under Sec. Sec. 221.21(c), 221.22(c), or 
221.24(c), or paragraphs (a) or (b) of this section, will not be 
permitted to introduce as evidence at the hearing testimony from a 
witness or other information that it failed to disclose.
    (2) Paragraph (c)(1) of this section does not apply if the failure 
to disclose was substantially justified or is harmless.
    (3) Before or during the hearing, a party may object to the 
admission of evidence under paragraph (c)(1) of this section.
    (4) The ALJ will consider the following in determining whether to 
exclude evidence under paragraphs (c)(1) through (c)(3) of this section:
    (i) The prejudice to the objecting party;

[[Page 104]]

    (ii) The ability of the objecting party to cure any prejudice;
    (iii) The extent to which presentation of the evidence would disrupt 
the orderly and efficient hearing of the case;
    (iv) The importance of the evidence; and
    (v) The reason for the failure to disclose, including any bad faith 
or willfulness regarding the failure.