Project Plan for Implementing NAD 83 in the Minerals Management Service. Part I: Responsibilities and Timeframes

摘要

Within the United States (U.S.), horizontal positioning data (latitude, longitude, and plane coordinate systems) have been successively based on a series of datums. On December 6, 1988, the Federal Geodetic Control Committee (FGCC) affirmed that the North American Datum 1983 (NAD 83) was the official civilian horizontal datum of U.S. surveying and mapping activities performed or financed by the Federal Government. Further, Federal civilian agencies engaged in surveying and mapping activities were directed to convert from the contemporary datums being used--most notably the North American Datum 1927 (NAD 27)3--to NAD 83 to the extent practicable, legally allowable and feasible. Formal notification of this action was published in Federal Register (FR) Notice 54 FR 25318, June 14, 1989. In response to this policy mandate, the Minerals Management Service (MMS) has developed a NAD 83 implementation plan. This two part document amplifies the MMS NAD 83 Implementation Plan outlined in the 56 FR 20020, May 1, 1991. The first part details the various aspects of implementation, organizational unit responsibilities, and estimated timeframes. The second part details specific technical aspects of the MMS converting from NAD 27 to NAD 83 and identifies associated organizational unit responsibilities. The documents can be used independently. However, they are intended to be used in association with each other. Each document is cross-referenced to the companion document.