CA Pub Res Code Section 8877

When a CGC83 value or values are shown on any document, the document shall include the following:

(a)

A statement that the geodetic coordinate value or values shown are a CGC83 value or values; exceptions shall be noted.

(b)

The station or stations to which the CGC83 value or values are referenced and connected and the geodetic coordinate value or values and the published or stated accuracy or accuracies of said reference station or stations.

(c)

The epoch of the CGC83 value or values shown. The epoch shall conform to provisions of subdivision (b) of Section 8876.