Section 204.920  Restrictions on Area Classifications

a)         All of the following areas that were in existence on August 7, 1977 shall be Class I areas and may not be redesignated:

1)         International parks;

2)         National wilderness areas that exceed 5,000 acres in size;

3)         National memorial parks that exceed 5,000 acres in size; and

4)         National parks that exceed 6,000 acres in size.

b)         Areas which were redesignated as Class I under regulations promulgated before August 7, 1977 shall remain Class I, but may be redesignated as provided in this Part.

c)         Any other area, unless otherwise specified in the legislation creating such an area, is initially designated Class II, but may be redesignated as provided in this Part.

d)         The following areas may be redesignated only as Class I or II:

1)         An area that, as of August 7, 1977, exceeded 10,000 acres in size and was a national monument, a national primitive area, a national preserve, a national recreational area, a national wild and scenic river, a national wildlife refuge, a national lakeshore or seashore; and

2)         A national park or national wilderness area established after August 7, 1977 that exceeds 10,000 acres in size.