[2] The 834th Transportation Battalion is the port manager at MOTCO and operates the three piers and an Army-owned rail system that connects with major public railway lines.

[8] In 1944, thousands of tons of munitions aboard a Navy cargo ship exploded while being loaded, resulting in the largest number of casualties among African Americans in any one incident during World War II.

In the days afterward, thousands participated by protesting the actions of the train's crew and the munitions shipment, including Jesse Jackson and Joan Baez.

During the demonstration, anti-war protesters dismantled several hundred feet of Navy railroad tracks located outside of the base, while police and U.S. Marines looked on.

Billy Nessen, a prominent Berkeley-based activist, was subsequently charged with organizing the track removal, and his trial resulted in a plea bargain that involved no jail time.

Throughout 1987 and 1988 there was a sustained 24 hour vigil present at the tracks in Concord to protest U.S. support of the Nicaraguan Contras and El Salvadorian "Death Squads."

32 areas of the facility were identified as having been contaminated with heavy metals including zinc, copper, lead, cadmium, and arsenic, as well as semi-volatile organic compounds (SVOC) and organochloride pesticides.

The Tidal Area was transferred to the U.S. Army Surface Deployment and Distribution Command (SDDC) and is now known as Military Ocean Terminal Concord (MOTCO).

The 834th Transportation Battalion is the port manager at MOTCO and operates the three piers and an Army-owned rail system that connects with major public railway lines.

[13] The city of Concord parted ways with the project developer, Albert Seeno III, with fears of what exactly "affordable housing" entailed and how the land was going to be managed.

A more definitive and precautious plan is in the works, and Concord City Council is expected to approve recommended questions regarding the project by late April 2023.

[15] In October 2014, the Intelligent Transportation Society of America announced[16] that the Concord NWS GoMentum Station proving grounds would be used to test self-driving cars.

[17] The news was met by community protests, as well as opposition by the mayor of Concord, who deemed the Superfund site 'not suitable for public habitation'[18] and Congressman Mark DeSaulnier, who called the proposal "madness".