[Code of Federal Regulations]
[Title 36, Volume 1]
[Revised as of July 1, 2008]
From the U.S. Government Printing Office via GPO Access
[CITE: 36CFR62.7]

[Page 349-350]
 
              TITLE 36--PARKS, FORESTS, AND PUBLIC PROPERTY
 
      CHAPTER I--NATIONAL PARK SERVICE, DEPARTMENT OF THE INTERIOR
 
PART 62_NATIONAL NATURAL LANDMARKS PROGRAM--Table of Contents
 
Sec. 62.7  Natural landmark modifications.

    (a) Determination of need for modifications. After designation, the 
modification of the boundaries of a natural landmark, and/or revision of 
information about it, may be appropriate. For example, because of new 
information or changes in the condition of an NNL, the boundary may have 
to be reduced or expanded or information about the NNL may have to be 
revised. Additional study may reveal that the area has nationally 
significant values that had not been previously documented. The NPS 
determines that landmark modifications are necessary through 
administration of the program. In addition, the NPS may receive 
suggestions for landmark modifications from other Federal agencies, 
State natural area programs, and other public and private organizations 
or individuals. The NPS determines the validity of these suggestions by 
applying the natural landmark criteria or by conducting additional 
study.
    (b) Boundary expansion. (1) Three justifications exist for enlarging 
the boundary of a national natural landmark: better documentation of the 
extent of nationally significant features, professional error in the 
original designation, or additional landowners with nationally 
significant features on their property desiring the designation.
    (2) If the NPS determines that an expansion of the boundary of the 
national natural landmark is appropriate, it will use the designation 
process outlined in Sec. 62.4(b) through (j). If a boundary is 
expanded, only the owners in the newly considered but as yet not 
designated portion of the area are notified and asked if they object to 
designation.
    (c) Boundary reduction. Two justifications exist for reducing the 
boundary of a national natural landmark: Loss of integrity of the 
natural features or professional error in the original designation. If 
the NPS determines that a reduction in the national natural landmark 
boundary is indicated, the designation removal process outlined in Sec. 
62.8 is used.
    (d) Change in description of values. If the NPS determines that a 
change in the description of the national natural landmark's nationally 
significant values is warranted, the NPS prepares the recommended 
changes and the Director submits the changes and all supportive 
documentation to the National Park System Advisory Board. The Advisory 
Board reviews the information submitted by the Director and makes 
recommendations to the Secretary. The Secretary reviews the supportive 
documentation and the recommendations of the board, and may approve 
changes in the description of a landmark's nationally significant 
values.
    (e) Minor technical corrections. Minor technical corrections to a 
national natural landmark boundary and other administrative changes in 
landmark documentation not covered under paragraphs (a) through (d) of 
this section may be approved by the Director without a review by the 
Advisory Board or

[[Page 350]]

the approval by the Secretary. Minor technical boundary corrections are 
defined as those that involve a change in less than five percent of the 
total area of the national natural landmark. The NPS notifies owners of 
proposed minor technical boundary corrections or other administrative 
changes in documentation, as described in this paragraph (e). Based upon 
owner response to this notification, the NPS determines whether the 
proposed change is a minor technical correction to landmark 
documentation that can be made administratively or whether the 
procedures outlined in Sec. 62.4(d) through (j) must be followed.