These are two different chemical releases that were caused by different sources.
The Reilly Tar & Chemical Corp. contamination is mainly creosote, which contains polycyclic aromatic hydrocarbons (PAHs) that were at one time used in wood-treating operations. The Reilly site has previously been listed on the federal National Priorities List, and the U.S. Environmental Protection Agency (EPA) and Minnesota Pollution Control Agency have been overseeing cleanup there since the late 1970s.
Contamination at the Reilly site is the result of:
- wastes discharged directly to a ditch that flowed into a wetland on the southern side of the property
- contaminated soil from leaky pipes and various processes that spilled during operations
- creosote and waste materials that likely seeped down several wells historically located on the property
For more information, visit the EPA’s Reilly Tar webpage.