California Code, Business and Professions Code - BPC § 8772

Any monument set by a licensed land surveyor or registered civil engineer to mark or reference a point on a property or land line shall be permanently and visibly marked or tagged with the certificate number of the surveyor or civil engineer setting it, each number to be preceeded by the letters “L.S.” or “R.C.E.,” respectively, as the case may be or, if the monument is set by a public agency, it shall be marked with the name of the agency and the political subdivision it serves.

Nothing in this section shall prevent the inclusion of other information on the tag which will assist in the tracing or location of the survey records which relate to the tagged monument.