Previous Projects

Onondaga Lake near Syracuse, NY

Plants found in the Onondaga Lake dredging site

Onondaga Lake near Syracuse, NY has often been referred to as the most polluted lake in the US. Remediation of the lake has been delayed because of the massive scope of the problem with over 10 million cubic yards of contaminated sediment estimated to be within the confines of the lake. Dr. Hayes assisted Honeywell and PARSONS on this important project by providing expertise in dredging equipment, sediment management options, and innovative remedial strategies to reduce the quantity of sediment that must be dredged from the lake. Dr. Hayes’ efforts included oversight of preliminary design efforts by PARSONS and coordination with NY State Department of Environmental Conservation on behalf of Honeywell.

Dr. Hayes continues to be involved in on-going design efforts for the dredging of over 3 million cubic yards of sediment from Onondaga Lake. He is actively involved in confined disposal facility design and investigating beneficial use opportunities to minimize disposal requirements.

(Photo courtesy of

Hudson River, NY

Hudson River dredging site

Dr. Hayes started out evaluating the efficacy or dredging and predicting water quality impacts during dredging during the RI/FS that eventually led to the ROD. He also worked on developing the performance standards for the project that governed the remedial operation. Dredging was completed in 2015.

(Photo courtesy of

Lower Fox River, Green Bay, WI

Lower Fox River Superfund Site

The Lower Fox River Superfund Site (LFR) runs from Appleton, WI into Green Bay. It was contaminated with PCBs from paper mills located on the river. I became involved in the project after the Wisconsin DNR produced a draft Feasibility Study (FS) prescribing a dredging remedy for the river.

Appleton Papers convened a panel of experts to evaluate the FS and recommend a remediation strategy. Over the course of several years, the panel considered the available data and prepared a recommended remedial action plan for the LFR. My role in the panel was to provide expertise related to dredging and sediment management practices. Over the course of the project, I interacted extensively with WDNR on behalf of Appleton Papers to help them better understand remedial dredging and some of the associated challenges (including residual sediments).

I also met with a number of special interest groups, state Legislators, and US Congressmen and Senators on behalf of Appleton Papers. Additionally, I made several presentations in public forums around the state.

(Photo courtesy of