[Federal Register Volume 71, Number 62 (Friday, March 31, 2006)]
[Notices]
[Page 16341]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 06-3161]


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DEPARTMENT OF THE INTERIOR

National Park Service


Notice of Proposed National Natural Landmark Designation for the 
Irvine Ranch Land Reserve, CA

AGENCY: National Park Service, Interior.

ACTION: Notice of proposed National Natural Landmark designation.

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SUMMARY: The National Park Service has evaluated and determined that 
the Irvine Ranch Land Reserve, located forty-five miles south of 
downtown Los Angeles, in Orange County, California appears to meet the 
criteria for national significance and proposes to recommend the site 
for designation as a National Natural Landmark. The public is invited 
to comment on this recommendation. The proposal will be considered by 
the National Park System Advisory Board at a meeting to be held on June 
8, 2006 at Zion National Park, in the Majestic View Lodge, 2400 Zion 
Park Blvd., Springdale, Utah.

DATES: Written comments will be accepted until May 30, 2006.

ADDRESSES: Written comments should be sent to Steve Gibbons, National 
Natural Landmarks Coordinator, North Cascades National Park, 810 State 
Route 20, Sedro Woolley, Washington 98284, or to his Internet address: 
[email protected].

FOR FURTHER INFORMATION CONTACT: Steve Gibbons at 360-856-5700, 
extension 306.

SUPPLEMENTARY INFORMATION: The Irvine Ranch Land Reserve represents 
significant biological resources of Mediterranean shrublands, including 
extensive areas of chaparral and coastal sage scrub associations. These 
chaparral and coastal sage scrub areas present one of the largest 
extant areas of this association remaining in the South Pacific Border 
Province. It is the presence of these large and relative undisturbed 
ecosystems and their inherent biological diversity that provide the 
uniqueness of this area. In commensurate with its biological 
significance the Irvine Ranch Land Reserve geologically represents a 
remarkably unique, long time-range stratigraphic succession that shows 
the linkage between tectonic framework, provenances, sedimentology, 
paleoenvironments, paleontology, paleoclimate, landscape evolution and 
geologic history. In this regard it is not only outstanding, but 
represents one of the most critical time intervals and locations in the 
evolution of the South Pacific Border Province.
    Information on the National Natural Landmarks Program can be found 
in 36 CFR Part 62 or on the Internet at http://www.nature.nps.gov/nnl.

    Dated: March 28, 2006.
Fran Mainella,
Director, National Park Service.
[FR Doc. 06-3161 Filed 3-30-06; 8:45 am]
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