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92_SB0824enr SB824 Enrolled LRB9204858DHmb 1 AN ACT in relation to the Illinois Coordinate System. 2 Be it enacted by the People of the State of Illinois, 3 represented in the General Assembly: 4 Section 5. The Illinois Coordinate System Act is amended 5 by changing Sections 2, 5, and 7 as follows: 6 (765 ILCS 225/2) (from Ch. 133, par. 102) 7 Sec. 2. The system of plane coordinates which has been 8 established by the United States Department of Commerce, 9 National Oceanic and Atmospheric Administration, National 10 Ocean Service, National Geodetic Survey for defining and 11 stating the positions or locations of points on the surface 12 of the earth within the State of Illinois is hereinafter to 13 be known and designated as the "Illinois Coordinate System". 14 (Source: P.A. 83-742.) 15 (765 ILCS 225/5) (from Ch. 133, par. 105) 16 Sec. 5. The plane coordinates of a point on the earth's 17 surface, used in expressing the position or location of that 18 point in the appropriate zone of this system, consists of 2 19 distances, expressed in units of U.S. survey feet and 20 decimals of a foot. One of these distances, known as the 21 "x-coordinate", gives the position in an east-and-west 22 direction; the other, known as the "y-coordinate", gives the 23 position in a north-and-south direction. These coordinates 24 depend upon and conform to the coordinates, on the Illinois 25 Coordinate System, of the monumented survey
triangulation and26 traversestations of the United States National Geodetic 27 OceanSurvey within the State of Illinois, as those 28 coordinates have been determined by that survey. 29 (Source: P.A. 83-742.) SB824 Enrolled -2- LRB9204858DHmb 1 (765 ILCS 225/7) (from Ch. 133, par. 107) 2 Sec. 7. For purposes of more precisely defining the 3 Illinois Coordinate System the following definitions 4 definitionby the United States National Geodetic Ocean5 Survey are isadopted: 6 The Illinois Coordinate System, East Zone, is based on 7 the transverse Mercator projection of the North American 8 Datum of 1983 (NAD 83) or the Clarke spheroid of 1866 (North 9 American Datum of 1927) (NAD 27), having a central meridian 10 of eighty-eight degrees and twenty minutes West (88° =-20'W.) 11 of Greenwich on which meridian the scale is set at one part 12 in 40,000 too small. The origin of coordinates is at the 13 intersection of the meridian eighty-eight degrees and twenty 14 minutes West (88° =-20'W.) of Greenwich and thirty-six 15 degrees and forty minutes North (36° =-40'N.) latitude. The 16 origin is given the coordinates x = 300,000 meters 17 (984,250.000 feet) and y = 0 meters for NAD 83 and x = 18 500,000 feet and y = 0 feet for the NAD 27. 19 The Illinois Coordinate System, West Zone, is based on 20 the transverse Mercator projection of the North American 21 Datum of 1983 (NAD 83) or the Clarke spheroid of 1866 North 22 American Datum of 1927 (NAD 27), having a central meridian of 23 ninety degrees and ten minutes West (90° =-10'W.) of 24 Greenwich, on which meridian the scale is set at one part in 25 17,000 too small. The origin of coordinates is at the 26 intersection of the meridian ninety degrees and ten minutes 27 West (90° =-10'W.) of Greenwich and thirty-six degrees and 28 forty minutes North (36° =-40'N.) latitude. The origin is 29 given the coordinates x = 700,000 meters (2,296,583.333 feet) 30 and y = 0 meters for NAD 83 and x = 500,000 feet and y = 0 31 feet for the NAD 27. 32 The position of the Illinois Coordinate System is as 33 marked on the ground by monumented survey triangulation or34 traversestations established in conformity with standards SB824 Enrolled -3- LRB9204858DHmb 1 adopted by the United States National Geodetic OceanSurvey 2 for second and higher order first-order and second-order3 work, whose geodetic positions have been rigidly adjusted on 4 the North American Datum (NAD 1927 or NAD 1983, or both), and 5 whose coordinates have been computed on the system herein 6 defined. Any such stations may be used for establishing a 7 survey connection with the Illinois Coordinate System. 8 (Source: P.A. 83-742.) 9 Section 99. Effective date. This Act takes effect upon 10 becoming law.
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