GOVERNMENT CONTRACT AWARDS

* PDG Inc. of Calabasas won a $2.5-million contract from the U.S. Postal Service in South San Francisco, for architect and engineering services.

* Tetra Tech Inc. of Pasadena won a $1.2-million contract from the Navy in Port Hueneme, for special studies and analyses.

* Skurka Engineering of Camarillo won a $189,280 contract from the Army in Rock Island, Ill., for aircraft components and accessories.

* Rockwell International Corp. of Thousand Oaks won a $149,948 contract from the Air Force in Arlington, Va., for research and development.

* Datron/Transco Inc. of Simi Valley won a $107,569 contract from the Air Force at Robins Air Force Base, Ga., for electrical and electronic equipment components.