Question: What is the establishment year of this military base north of the city of Concord, California at the shore of the Sacramento River and adjacent to Shore Acres, California?
Sentence (from "Shore Acres, California"): Shore Acres is a suburban Unincorporated community in eastern Contra Costa County, California, in the San Francisco Bay Area, part of the Bay Point CDP and adjacent to the Concord Naval Weapons Station.
Relevant evidence: Yes