Update Thursday, September 8 at 11:06AM: Phillips 66 in Billings is continuing to monitor odor complaints.

“As of Thursday, Sept. 8, Phillips 66 Billings Refinery, located at 401 South 23rd Street, continues to investigate odor concerns in the community reported on Tuesday, Sept. 6. A potential source of the odor was identified, and mitigation measures have been put in place. Precautionary air monitoring continues inside and outside the refinery; all air data collected is below EPA residential standards. All appropriate agency and community partners have been notified. The safety of the community, environment, and our people are of the utmost importance to Phillips 66,” Bernardo Fallas Director of Corporate Communications said.

The City of Billings contacted Phillips 66 Tuesday morning about ‘odor concerns’ in the community. The refinery is reportedly working with local authorities to determine the source. Phillips 66 stated as a precaution, air monitoring is being conducted inside and outside of the refinery and has indicated no risk to human health.

“Phillips 66 remains committed to ensuring the health and safety of our employees and the communities where we operate,” according to a public statement Tuesday.