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National Guard called in, people told to stay inside amid high benzene levels near burned Texas petrochemicals facility

Firefighters battle a petrochemical fire at the Intercontinental Terminals Company Monday, March 18, 2019, in Deer Park, Texas. The large fire at a Houston-area petrochemicals terminal will likely burn for another two days, authorities said Monday, noting that air quality around the facility was testing within normal guidelines. (AP Photo/David J. Phillip)
Firefighters battle a petrochemical fire at the Intercontinental Terminals Company Monday, March 18, 2019, in Deer Park, Texas. The large fire at a Houston-area petrochemicals terminal will likely burn for another two days, authorities said Monday, noting that air quality around the facility was testing within normal guidelines. (AP Photo/David J. Phillip) Firefighters battle a petrochemical fire at the Intercontinental Terminals Company Monday, March 18, 2019, in Deer Park, Texas. The large fire at a Houston-area petrochemicals terminal will likely burn for another two days, authorities said Monday, noting that air quality around the facility was testing within normal guidelines. (AP Photo/David J. Phillip)

HOUSTON (AP) – National Guard troops have been called in and residents were told to stay inside after elevated levels of benzene were detected early Thursday near a Houston-area petrochemicals storage facility that caught fire this week.

Harris County officials said the Guard and hazardous materials teams have established perimeters around the Intercontinental Terminals Company in Deer Park, which is about 15 miles (24 kilometers) southeast of Houston.

The Texas Environmental Protection Agency said Wednesday that benzene levels near the facility didn’t pose a health concern. But authorities issued a shelter-in-place order Thursday following “reports of action levels of benzene or other volatile organic compounds” within Deer Park, according to the city.

Several school districts also canceled classes for the day, citing “unfavorable air quality conditions.”

The fire started Sunday, sending a huge, dark plume into the air for several days before crews extinguished the blaze on Wednesday. The fire spread to storage tanks holding components of gasoline and materials used in nail polish remover, glues and paint thinner.