Preliminary Analysis of the Wolverine World Wide House

Street Feasibility Study Update

Richard R. Rediske, Ph.D.

Let’s not forget why we are here.

The House St Disposal Site is the source of significant

groundwater and surface water contamination that has

impacted numerous residential wells and the Rogue River for decades

PFOS

The House Street Disposal Site is highly contaminated with PFAS Compounds.

The plume has expanded significantly beyond the House Street Disposal Site Boundaries.

The plume map shows the effect of 50 Years of

Infiltration and Groundwater Migration

from Wolverine’s disposal site for tannery byproducts containing Scotchgard until 1970.

The Feasibility Study and Consent DecreeThe Feasibility Study shall evaluate the following remedy options to (1) manage solid wastes at the House Street Disposal Site and (2) reduce and control potential migration of PFAS Compounds from soils and sludges into the groundwater from the House Street Disposal Site:A. an approximately 30-acre surface cap without a bottom liner B. an approximately 20-acre surface cap over an area in which materials are

consolidated and placed above a liner with leachate collectionC. other alternatives that may include some combination of a smaller cap

and groundwater interceptor, collection, or treatment systems

Subject to Section XVIII (Dispute Resolution for MDEQ and Defendant), if MDEQ does not approve of the proposed remedy in the Feasibility Study for the House Street Disposal Site, the final remedy shall be an approximately 30-acre surface cap without a bottom liner.

House Street Waste Location and Depth

The greatest amount of waste was disposed of in excavated pit intersecting groundwater (USGS 67)

Waste Depth

Clay Cap

Does the remedy address PFAS contamination?

Would phytoremediation better “manage the wastes” and “reduce and control of migration of PFAS Compounds from soils and

sludges into the groundwater” than a 30 acre cap?

Unanswered Questions

1. What is the difference in the amount of contaminated leachate and groundwater leaving the site between the two methods?

2. What will the plume look like 50 - 100 years from now under both scenarios?

Next Steps

• Wolverine submits House Street FS tomorrow on Feb 19• EGLE will establish a Public Comment schedule and host a public

meeting.• Technical Committee will review the FS and present preliminary

comments and questions at the March 18 CAG meeting.• The CAG will finalize the comments and submit to EGLE prior to the

close of the Public Comment Period. • Individuals and CAG members can express their concerns in writing or

at public meetings to EGLE. • Plainfield Township Hearings?