Air sampling has revealed that the Navy ship that burned in San Diego Bay early this month blanketed nearby communities with smoke containing toxic chemicals.

As black smoke poured off the amphibious assault ship Bonhomme Richard, people in portside communities complained of headaches and nausea, and residents as far north as Escondido reported smelling smoke from the blaze.

The findings from the San Diego County Air Pollution Control District contradict earlier statements by the Navy that “there’s nothing toxic in there.” Testing found more than a dozen potentially harmful substances, such as benzene, chloromethane and acetonitrile.

Still, state and local air-quality officials agreed residents have little to fear. Their relatively brief exposure to the toxic smoke is unlikely to cause any negative, long-term health effects, according to a review of the data by the state’s Office of Environmental Health Hazard Assessment.

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