U.S. Army Corps of Engineers Los Angeles District commander Col. Julie Balten and Oceanside city officials, listen to a briefing by a Manson Construction contractor, April 12, at the mouth of Oceanside Harbor. Sand dredged from the harbor will be piped to a section of Oceanside Beach, California. The annual maintenance dredging of Oceanside Harbor is contracted and supervised by the U.S. Army Corps of Engineers Los Angeles District.