The use of the State Plane Coordinates by any person, corporation, or governmental agency engaged in land surveying or mapping is optional.
Cal. Pub. Res. Code § 8816
California Coordinate System
Amended by Stats. 1986, Ch. 611, Sec. 15.
Official source: California Legislative Information. Reproduced from public-domain California statutes; confirm against the official source for the current text. Not legal advice.