AEP River Transportation

AK Steel

American Commercial Lines

American Electric Power

ARCH Chemicals

Ashland, Inc.

Babst, Calland, Clements, and Zomnir, P.C.

BASF

Bayer Corporation

Bristol Myers Squibb, Co.

Cargill

Dayton Power and Light

Dominion Foundation

Dow Corning

DuPont Washington Works

Duke Energy

Duquesne Light

EA2 Systems

E. ON U.S. LLC

Environmental Quality Management

Gallatin Steel

The Home Depot

Illinois SCALE grant

Indiana American Water

Kentucky American Water

Kentucky River Authority

Koppers

Louisville and Jefferson County MSD

Louisville Water Company

Massac County Soil and Water Conservation District

Neville Chemical Co.

Nova Chemicals, Inc.

PPG Industries

Rivertown Breakdown

Rumpke of Ohio, Inc

Sanitation District No.1 of Northern Kentucky

Toyota

West Virginia American Water