PAH Reduction through Phase-Out of Coal Tar-Based Pavement Sealcoats
The Minnesota Pollution Control Agency (MPCA), Freshwater Future (Michigan), and partners are engaged in a project funded by U.S. EPA’s Great Lakes Restoration Initiative through 2014 to promote phase-out or reduction of coal tar-based pavement sealcoat (CTS) in order to reduce environmental loading of chemical hazards called polycyclic aromatic hydrocarbons (PAHs).
Other project information is available through the MPCA-hosted web page at, including guidance for property owners, associations and managers at
Interested states, provinces, municipalities, community groups, or companies should contact the Project Managers (at left).

1. Contractors and Suppliers: If you commit to ending or reducing coal tar sealcoat sales or use, we can display your company information (see interactive map and lists at so that buyers in your area seeking safer alternatives can find your services.  There are two pledge options:

a. NO COAL TAR PLEDGE - If you have already stopped using or selling coal tar sealcoat, or will commit to not doing so anywhere going forward from a specific date, please consider signing and returning the company pledge commitment form HERE.
b. REDUCED COAL TAR PLEDGE - If you can commit to converting some of your sales or use of coal tar sealcoat to safer alternatives, consider signing and returning the pledge commitment form HERE.

These are voluntary commitments, but once made, companies are expected to honor them or notify

2. WISCONSIN MATERIALS - Developed by partner University of Wisconsin Solid and Hazardous Waste Education Center.

3. SCREENING TEST - Low-cost screening test for coal tar content.

4. FALL 2013 WEBINAR MATERIALS - Presentations and recordings.

5. PROJECT SUPPORT - Request for Proposal and Contract files for grant contract to conduct coal tar sealcoat PAH reduction work in Great Lakes states or provinces outside Minnesota.  MPCA executed a contract for this purpose with Freshwater Future, effective March 10, 2014.  See for more information.