Limetree says no sulfur dioxide near plant, National Guard finds high levels

Limetree Bay said Sunday air quality testing near its U.S. Virgin Islands refinery found zero concentrations of sulfur dioxide, hours after the National Guard said it found elevated levels of the chemical during its own testing.

Schools in St. Croix shut for the second time in a month last week after residents smelled an odor, and many reported physical symptoms such as headaches, nausea and burning…