Revised Code of Washington
Chapter 58.20 - Washington Plane Coordinate System.
58.20.121 - Washington plane coordinate system.

RCW 58.20.121
Washington plane coordinate system.

The most recent version of the state plane coordinate system for the state of Washington, which has been established by NGS, based on the NSRS, for defining and stating the positions or locations of points on the surface of the earth within the state of Washington must be known as the "Washington plane coordinate system."

[ 2020 c 50 § 2.]

Structure Revised Code of Washington