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the case of technical boundary revisions (resulting
from such causes as survey error or changed road
alignments), the authority of the Secretary under
this clause (i) shall apply only if each of the follow-
ing conditions is met—
(I) the sum of the total acreage of lands,
waters, and interests therein to be added to the
area and the total such acreage to be deleted
from the area is not more than 5 percent of the
total Federal acreage authorized to be included
in the area and is less than 200 acres in size;
(II) the acquisition, if any, is not a major
Federal action significantly affecting the quality
of the human environment, as determined by
the Secretary;
(III) the sum of the total appraised value
of the lands, waters, and interest therein to be
added to the area and the total appraised value
of the lands, waters, and interests therein to be
deleted 
from 
the 
area 
does 
not 
exceed
$500,000;
(IV) the proposed boundary revision is not
an element of a more comprehensive boundary
modification proposal; and
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(V) the Director of the National Park
Service obtains written support for the bound-
ary modification from all property owners
whose lands, water, or interests therein, or a
portion of whose lands, water, or interests
therein, will be added to or deleted from the
area by the boundary modification: Provided,
however, that minor boundary revisions involv-
ing only deletions of acreage from an area of
the national parks system may be made only by
Act of Congress.
TITLE II—AUTHORIZATION FOR CERTAIN
PARK FACILITIES TO BE LOCATED
OUTSIDE OF UNITS OF THE NATIONAL
PARK SYSTEM
Section 4 of the Act entitled ‘‘An Act to improve the
administration of the national park system by the Sec-
retary of the Interior, and to clarify the authorities appli-
cable to the system, and for other purposes’’ approved Au-
gust 18, 1970 (16 U.S.C. 1a–1 et seq.), is amended to
read as follows:
‘‘SEC. 4. (a) In order to facilitate the administration
of the national park system, the Secretary of the Interior
is authorized, under such terms and conditions as he may
deem advisable, to establish essential facilities for park ad-
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ministration, visitor use, and park employee residential
housing outside the boundaries, but within the vicinity, of
units of the national park system for purposes of assuring
conservation, visitor use, and proper management of such
units. Such facilities and the use thereof shall be in con-
formity with approved plans for the unit concerned. Such
facilities may only be developed by the Secretary upon
finding that location of such facilities would—
‘‘(1) avoid undue degradation of the primary
natural or cultural resources within the unit;
‘‘(2) enhance service to the public; or
‘‘(3) provide a cost saving to the Federal Gov-
ernment.
‘‘(b) For the purpose of establishing facilities under
subsection (a):
‘‘(1) The Secretary may enter into agreements
permitting the Secretary to use such Federal lands
as the head of a Federal agency having primary au-
thority over the administration of such land and the
Secretary determine is suitable for such use.
‘‘(2) The Secretary, under such terms and con-
ditions as the Secretary determines are reasonable,
may lease or acquire (from willing sellers only) by
purchase or donation, real property (other than Fed-
eral land), for purposes as specified in this section.
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‘‘(3) For real property acquired pursuant to
paragraph (2), the Secretary shall establish written
guidelines setting forth criteria to be used in deter-
mining whether the acquisition would—
‘‘(A) reflect unfavorably upon the ability of
the Department or any employee to carry out
its responsibilities or official duties in a fair and
objective manner; or
‘‘(B) would compromise the integrity or
the appearance of the integrity of the Depart-
ment’s programs or any official involved in
those programs.
‘‘(4) The Secretary may construct, operate, and
maintain such permanent and temporary buildings
and facilities as the Secretary deems appropriate on
land which is in the vicinity of any unit of the na-
tional park system for which the Secretary has ac-
quired authority under this section, except that the
Secretary may not begin construction, operation, or
maintenance of buildings or facilities on land not
owned by the United States until the owner of such
lands has entered into a binding agreement with the
Secretary, the terms of which assure the continued
use of such buildings and facilities for a period of
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time commensurate with the level of Federal invest-
ment.’’.
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