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SUBJECT CATEGORY: Publication of North American Datum of 1983 State Plane Coordinates in Feet in Maine
DOCUMENT SUMMARY: The National Geodetic Survey (NGS) will publish North American Datum of 1983 (NAD 83) State Plane Coordinate (SPC) grid values in both meters and U.S. Survey Feet (1 ft = 1200/3937 m) in Maine, for all well defined geodetic survey control monuments maintained by NGS in the National Spatial Reference System (NSRS) and computed from various geodetic positioning utilities. The adoption of this standard is implemented in accordance with NGS policy and a request from the Maine Department of Transportation, the Maine Society of Land Surveyors, and the Maine GIS Stakeholders.
SUMMARY: North American Datum of 1983 State Plane Coordinates in feet—; Maine,
IN 1991, NGS adopted a policy that defines the conditions under
which NAD 83 State Plane Coordinates (SPCs) would be published in feet
in addition to meters. As outlined in that policy, each state or
territory must adopt NAD 83 legislation (typically referenced as Codes,
Laws or Statutes), which specifically defines a conversion to either
U.S. Survey or International Feet as defined by the U.S. Bureau of
Standards in Federal Register Notice 595442. To date, 48 states have
adopted the NAD 83 legislation however, for various reasons, only 33
included a specific definition of the relationship between meters and
feet. This lack of uniformity has led to confusion and misuse of SPCs
as provided in various NGS products, services and tools, and created
errors in mapping, charting and surveying programs in numerous states due to inconsistent coordinate conversions.
Dated: December 3, 2007.
David B. Zilkoski,
Director, Office of National Geodetic Survey, National Ocean Service, National Oceanic and Atmospheric Administration.
[FR Doc. 076026 Filed 121107; 8:45 am]
BILLING CODE 3510JEM
FOR FURTHER INFORMATION CONTACT Requests for additional information should be directed to David Doyle, Chief Geodetic Surveyor, National Geodetic Survey (N/NGS2), 1315 EastWest Highway, Silver Spring, MD, 20910; Phone: (301) 7133178.
14 CFR Part 39 40 CFR Part 52 14 CFR Part 71 33 CFR Part 165 50 CFR Part 679 47 CFR Part 73 26 CFR Part 1 40 CFR Part 180 33 CFR Part 117 50 CFR Part 17 44 CFR Part 67 50 CFR Part 648 14 CFR Part 97 40 CFR Part 63 33 CFR Part 100 50 CFR Part 622 50 CFR Part 660 26 CFR Part 301 44 CFR Part 65 39 CFR Part 111 40 CFR Part 300 6 CFR Part 5 40 CFR Part 271 47 CFR Part 64 40 CFR Parts 52 and 81 50 CFR Part 665 10 CFR Part 50 44 CFR Part 64 49 CFR Part 571 39 CFR Part 3020