At the time, a Suncor spokesman said no sulfur dioxide was detected at ground level, and there was no risk to human health. However, in a letter to Colorado and Adams County emergency management obtained by the Post, company officials said that 75,600 pounds of sulfur dioxide were released in the incident. The 24-hour limit is 500 pounds.
“There are no known or anticipated acute or chronic health risks associated with the release, and there is no need for persons to take any precautions or seek medical attention related to this release,” the company said in the letter.
Colorado Department of Public Health and Environment officials told the Post that because an Xcel Energy power outage caused the refinery release, Suncor probably won’t be penalized.
However, Suncor is under ongoing investigation for previous environmental problems, including excessive sulfur dioxide emissions.
In 2012, Suncor paid a $2.2 million penalty for air quality violations related to benzene pollution.