The Richland Chemical Plant is an industrial process plant in Los Angeles managed by Arthur Dupres. After the Visitors arrived Eleanor Dupres convinced her husband to lobby so that his plant would be chosen to manufacture the Visitors' chemical. When the Visitors arrive the local community arranged for a celebration dedicated to them. The Visitors sent teams of technicians to work work with human staff where they were producing the chemical that was allegedly vital to the Visitors. In reality, the Visitors used the chemical plant as a local headquarters. Mike Donovan infiltrated the plant in order to sneak aboard a Visitor Shuttle heading to the Mothership.