Question: In which year was this military base established that functioned as a World War II armament storage depot and is located near Seal Islands?

Related documents: [0]  [DOC] Concord Naval Weapons Station was a military base established in 1942 north of the city of Concord, California at the shore of the Sacramento River where it widens into Suisun Bay. The station functioned as a World War II armament storage depot, supplying ships at Port Chicago. Concord NWS continued to support war efforts during the Korean War, the Vietnam War and the Gulf War, processing and shipping thousands of tons of materiel out across the Pacific Ocean. During World War II it also had a Naval Outlying Field at the southern edge of the base. It ceased being an operating airfield after World War II. [END] 
[1]  [DOC] Seal Islands are a pair of islands in Suisun Bay at the mouth of the Sacramento-San Joaquin River Delta in Contra Costa County, California, 10 km east of Benicia, and 500 metres off-shore from the former Concord Naval Weapons Station and Port Chicago Naval Magazine. [END]  
Answer: 1942
1942