Jump to main content.


Congressional District # 08


EPA ID# WID083290981
Last Updated: February, 2012

Site Description

The N.W. Mauthe site is a former electroplating facility, located at 725 South Outagamie Street in Appleton, Wisconsin.  Located in a neighborhood of mixed commercial, light industrial, and residential properties, the one-acre site is bordered by Melvin Street on the north, a parking lot on the west, and the Wisconsin Central Transportation Corporation railroad right-of-way on the southeast.  Private residences are located immediately southeast of the railroad tracks and on the north side of Melvin Street.

Operations at the site were conducted from 1960 to 1987 when all usable plating equipment and solutions were removed from the site.  The property is presently owned by Carol Mauthe, the widow of the site owner and operator.

Site Responsibility

This site is being addressed through federal and state actions.  The State of Wisconsin, through Wisconsin Department of Natural Resources, is currently the lead agency overseeing the long-term operation and maintenance of the remedy.

Threats and Contaminants

Surface and subsurface soils were contaminated with VOCs, including benzene, toluene, ethylbenzene, and xylenes (BTEX), chlorinated hydrocarbons, 2-butanone, chromium, cadmium, zinc, and cyanide.  Groundwater is contaminated with VOCs, SVOCs, and various inorganic compounds. 

Cleanup Progress

A Record of Decision was signed in March 1994, calling for site demolition, excavation, and offsite treatment of soils contaminated with chromium, capping the site with clay, and the installation of groundwater collection trenches and a groundwater treatment facility with discharge to the sanitary sewer.

Site remedy construction is complete.  The site remedy is now operating, and long-term operation and maintenance of the remedy is occurring under the direction of the State of Wisconsin.  A five-year review was completed for the site in April 2001 and determined that the site remedy is protective of human health and the environment.  A second five-year review was completed in April 2006 which determined that the remedy is still protective of human health and the environment in the short term.  However, the second five-year review identified that the institutional controls required by the ROD may not have been implemented.  As a result, institutional controls such as deed restrictions or easements and site access controls that are intended to prevent access, excavation or disturbance of the ground water collection and treatment system or the installation of drinking water wells need to be implemented to ensure long-term protectiveness.  The second five-year review also recommended additional efforts to identify modifications which will increase the efficiency of the ground water pump and treat system. 

Since influent from the groundwater collection trenches routinely met discharge limits, in April 2006 treatment of the collected groundwater ceased and it was discharged directly to the sanitary sewer and was authorized under a revised discharge permit.  In May 2006, two additional monitoring wells were installed in the former source areas and added to the monitoring plan to better evaluate the plume conditions within the ground water collection area.

In April 2011, a third five-year review of the remedy was completed.  The report concluded the remedy remains protective since exposure pathways which could result in unacceptable risks are being controlled.  A long-term Institutional Control Plan will be developed to ensure these pathways remain controlled in the future.



Remedial Project Manager, U.S. EPA
david seely (seely.david@epa.gov)
(312) 886-7058

Community Involvement Coordinator, U.S. EPA
susan pastor
(312) 353-1325




Site Profile Information

This profile provides you with information on EPA's cleanup progress at this Superfund site.


Local Navigation

Jump to main content.