California Code, Public Utilities Code - PUC § 1208

Upon the filing of the petition or the making of the order on the commission's own motion, the commission shall make its order to show cause.  The order shall (a) specify the nature of the proceeding, (b) contain a general description of the property and interest to be condemned, and (c) direct the owners and claimants and the railroad corporations, street railroad corporations, and governmental authorities in interest named in the petition or order on the commission's own motion, who shall also be named in the order to show cause, to appear before the commission at a time and place specified in the order, to show cause, if any they have, why the commission should not proceed after hearing to fix the just compensation to be paid for the acquisition of or damage to the specified property and interest, to designate the party or parties to the proceeding who shall pay such compensation and the owners and claimants to whom such compensation shall be paid, and to make its final order of condemnation.

The order to show cause shall direct the secretary of the commission to serve or cause to be served upon each owner and claimant, railroad corporation, street railroad corporation, and governmental authority in interest a copy of the order certified under the seal of the commission to which shall be attached a copy of the petition or order on the commission's own motion.

When the proceeding is commenced by order on the commission's own motion the order to show cause may be incorporated in the order on the commission's own motion.