Federal safety inspectors recently cited the contractor operating the Anniston chemical weapons incinerator for three serious violations involving worker exposure to nerve agent.
The Occupational Safety and Health Administration last month alleged that officials with Washington Group International-Westinghouse failed to properly investigate a January incident in which nerve agent spilled onto workers' protective suits.
OSHA said the contractor also failed to alert workers to procedural changes before two similar incidents occurred in February and March.
All of the violations were corrected at the time of inspections, one in February and one in June.
OSHA originally proposed a $7,500 penalty, but offered to reduce it to $4,781 if Washington Group International-Westinghouse agreed to the settlement within 15 days.
The contractor is contesting the citations. An independent federal review commission will hear the case.