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Oconomowoc Electroplating Co. Inc.
Site Information
- Ashippun, WI (Dodge County)
- EPA ID# WID006100275
- NPL Site Narrative
- NPL Fact sheet
- CERCLIS listing
- Alias(es): N/A
Contact Information
Community Involvement Coordinator
Susan Pastor (pastor.susan@epa.gov)
312-353-1325 or 800-621-8431, ext. 31325
Remedial Project Manager
Bill Ryan (ryan.williamj@epa.gov)
312-353-4374 or 800-621-8431, ext. 34374
Repositories
(where to view written records)
Ashippun Town Hall
W1266 Highway O
Oconomowoc, WI
Background
The Oconomowoc Electroplating Co., Inc. site is located in the unincorporated town of Ashippun, a rural area about 35 miles west of Milwaukee. It operated from 1957 to the early 1980s as an industrial facility that used metals, chemicals and organic compounds in it production process. During that time, the company discharged untreated wastewater into nearby wetlands and Davy Creek. Two unlined lagoons on the property contained electroplating sludge. These lagoons leaked, and sometimes overflowed. Contaminants made their way into the ground water beneath and downstream of the site. (more...)
Site Updates | Fact Sheets || Technical Documents || Five-Year Reviews
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Site Updates
August 2009
EPA is working on a revised plan to clean up trichloroethylene, or TCE, contamination in ground water, wetlands and nearby Davy Creek has been completed. TCE was used in electroplating and degreasing operations when the plant was in business from 1957 to the early 1980s. The plan is looking at permanently shutting down the current pump-and-treat system. Another process called "natural attentuation" has been effectively used to clean up the ground water since 2004 when the pump-and-treat system was shut down on a trial basis. EPA would like to continue using that method since the original system has already removed much of the contamination and would have to keep operating for several more years to meet cleanup goals. In addition, geologic conditions are favorable for the bacteria used to naturally rid the ground water of TCE.
Private wells near the site have been sampled regularly since 2005. Results show very low levels of TCE in the wells, but are not a health risk.
Fact Sheets
- U.S. EPA Completes Study of Contamination at the Oconomowoc Electroplating Company Superfund Site (PDF) (12pp, 763K) March 1990
- U.S. EPA Proposes Plan for Interim Cleanup Action at Oconomowoc Electroplating Superfund Site (PDF) (20pp, 1.2MB) July 1990
Technical Documents
- Hydrogeologic Investigation and Groundwater Extraction System Evaluation (PDF) (775pp, 69MB) February 2004
- Explanation of Significance Differences (PDF) (11pp, 563K) March 1994
- Explanation of Significant Differences (PDF) (18pp, 3MB) September 1991
- Feasibility Study (PDF) (340pp, 16.0MB) July 1990
- Remedial Investigation Report Vol. 1 (PDF) (291pp, 17.4MB) March 1990
- Remedial Investigation Report Vol. 2 (PDF) (395pp, 16.5MB) March 1990
- Record Of Decision (PDF) (95pp, 6.2MB) September 1990
Five-Year Reviews
- Third Five-Year Review Report (PDF) (64pp, 5.6MB) July 2007
- Second Five-Year Review Report (PDF) (37pp, 1.8MB) July 2002
- Five-Year Review Report (PDF) (6pp, 379K) September 1997