Jump to main content.

Reilly Tar & Chemical Corp.
(St. Louis Park Plant)

Site Information

Enlarge map

Contact Information

Community Involvement Coordinator
Heriberto León (leon.heriberto@epa.gov)
312-886-6163 or 800-621-8431, ext. 66163

Remedial Project Manager

Leah Evison


(where to view written records)

St. Louis Park Public Library
3240 Library Lane
Minneapolis, MN 55426-4102

Open Mon-Tue 10am-9pm; Wed,Fri-Sat 10am-5pm; Thu 1pm-9pm; Sun 12pm-5pm


From 1917 to 1972, the Reilly Tar & Chemical Corporation distilled coal tar and treated wood products at a plant know as Republic Creosoting Works, in St. Louis Park, Minnesota.  Reilly disposed of waste on-site in several ditches that flowed to an adjacent peat bog. In 1972, the site was sold to the City of St. Louis Park. The wastes generated at the site were mostly polycyclic aromatic hydrocarbons (PAHs), which contaminated soil at the site, the peat bog, and groundwater beneath the site. 

During the 1980’s, the peat bog was filled with clean soil.  Since that time, the site area has also been cleaned up and has been redeveloped into a City park and multi-family housing. It is estimated that approximately 47,000 people use the groundwater from aquifers near the site, which are now treated to meet all required health standards.

Site Updates | Latest Update | News Releases || Fact Sheets || Technical Documents || Five-Year Reviews

You will need the free Adobe Reader to view some of the files on this page. See EPA's PDF page to learn more.

Site Updates

August 2015

Under the terms of an agreement made with Reilly, EPA, the Minnesota Pollution Control Agency, and several others, the City of St. Louis Park monitors the groundwater contamination and operates a number of pumping wells at the site.  Five wells located nearer the site pump more highly-contaminated groundwater to remove contaminants and to keep it from spreading out further.  After treatment to meet the requirements of a permit, the City discharges this water from three of the wells to a pond that drains into Minnehaha Creek. Water from the other two wells is discharged to the sanitary sewer.

Under the terms of the agreement, the City operates two additional pumping wells located in areas that are more lightly contaminated. Pumping at these two wells serves two purposes – to help keep the contamination from spreading further, and to supply water that is used by the city. Each of these wells has its own treatment facility where the water is treated for PAHs, and for iron and other naturally occurring minerals, before going into the City drinking water system.  (Other drinking water wells operated by the City are not contaminated with PAHs, but are treated for iron and other naturally occurring minerals.)

The City regularly takes water quality samples from a large network of groundwater monitoring wells.  EPA, MPCA and the Minnesota Department of Health, oversee the City’s groundwater monitoring and ensure that the treatment remains effective.  

View past updates

News Releases

Top of page

Fact Sheets

Top of page

Technical Documents

Top of page

Five-Year Reviews

Top of page

Local Navigation

Jump to main content.