The company that operated a fertilizer plant in the city of West, where an April explosion killed 15 people, faces $118,300 in federal fines for two dozen serious safety violations, including a failure to have an emergency response plan, officials said Thursday. The Occupational Safety and Health Administration, which had not inspected the facility since 1982, said the West Fertilizer Company committed violations that included unsafe handling and storage of two fertilizers, anhydrous ammonia and ammonium nitrate, a chemical that investigators believe contributed to the huge blast. A spokesman for the company said its lawyers were reviewing the citations and the proposed fine. Also Thursday, a former paramedic who was among the first responders pleaded guilty to federal charges that he collected materials for a pipe bomb. The man, Bryce Ashley Reed, 31, was arrested weeks after the explosion. He was never linked by authorities to any criminal responsibility for the plant blast.