68 Pa. Stat. § 955
For purposes of more precisely defining the Pennsylvania Coordinate System, the following definition by the National Ocean Survey/National Geodetic Survey (formerly the United States Coast and Geodetic Survey) is adopted:
The Pennsylvania Coordinate System of 1927, North Zone, consists of a Lambert conformal projection of the Clarke spheroid of 1866, having a central meridian 77 degrees 45 minutes west of Greenwich. The intersecting cone of this projection cuts the surface of the spheroid in parallels of latitude 40 degrees 53 minutes and 41 degrees 57 minutes north of the equator, along which parallels the scale shall be exact. The origin of coordinates for this zone is at the intersection of the meridian 77 degrees 45 minutes west longitude and the parallel 40 degrees 10 minutes north latitude. This origin is given the coordinates x==2,000,000 feet; y==0 feet.
The Pennsylvania Coordinate System of 1927, South Zone, consists of a Lambert conformal projection of the Clarke spheroid of 1866, having a central meridian 77 degrees 45 minutes west of Greenwich. The intersecting cone of this projection cuts the surface of the spheroid in parallels of latitude 39 degrees 56 minutes and 40 degrees 58 minutes north of the equator, along which parallels the scale shall be exact. The origin of coordinates for this zone is at the intersection of the meridian 77 degrees 45 minutes west longitude and the parallel 39 degrees 20 minutes north latitude. This origin is given the coordinates x==2,000,000 feet; y==0 feet.
The Pennsylvania Coordinate System of 1983, North Zone, consists of a Lambert conformal projection of the North American datum of 1983, having a central meridian of 77 degrees 45 minutes west. The northern standard parallel is latitude 41 degrees 57 minutes and the southern standard parallel is latitude 40 degrees 53 minutes, along which parallels the scale shall be exact. The origin of coordinates is at the intersection of the meridian 77 degrees 45 minutes west longitude and the parallel 40 degrees 10 minutes north latitude. This origin is given the coordinates n==0 meters; e==600,000 meters.
The Pennsylvania Coordinate System of 1983, South Zone, consists of a Lambert conformal projection of the North American datum of 1983, having a central meridian of 77 degrees 45 minutes west. The northern standard parallel is latitude 40 degrees 58 minutes and the southern standard parallel is latitude 39 degrees 56 minutes, along which parallels the scale shall be exact. The origin of coordinates is at the intersection of the meridian 77 degrees 45 minutes west longitude and the parallel 39 degrees 20 minutes north latitude. The origin is given the coordinates n==0 meters; e== 600,000 meters.
Standard conversions of coordinates from meters to feet will be computed using the United States survey foot with a definition of 1200/3937 m== United States survey foot.
The position of the Pennsylvania Coordinate System shall be as marked on the ground by fundamental triangulation or traverse stations established by the National Geodetic Survey, formerly the United States Coast and Geodetic Survey for first-order and second-order work, whose geodetic positions have been rigidly adjusted on the North American datum of 1927, and redefined on the North American datum of 1983 and whose plane coordinates have been computed on the system here defined. Such stations, established by the National Geodetic Survey, formerly the United States Coast and Geodetic Survey, and any other triangulation and traverse stations which have been established in accordance with the standards of accuracy and specifications by the Federal Geodetic Control Committee of the United States Department of Commerce or in accordance with the requirements of the State department authorized to administer this act, may be used for establishing a survey connection with the Pennsylvania Coordinate System.
68 P.S. § 955