City Disposal Corporation Landfill
- Dunn Township, WI (Dane County)
- EPA ID# WID980610646
- NPL Site Narrative
- NPL Factsheet
- Superfund Site Progress Profile or CERCLIS listing
- Alias(es): N/A
Community Involvement Coordinator
Susan Pastor (firstname.lastname@example.org)
312-353-1325 or 800-621-8431, ext. 31325
Remedial Project Manager
Karen Mason-Smith (email@example.com)
312-886-6150 or 800-621-8431, ext. 66150
(where to view written records)
Dunn Town Hall
4156 County Trunk Highway B
The 38-acre City Disposal Corp. site is located in a predominantly agricultural area about one-half mile northeast of the city of Oregon and about 7 miles south of Madison. The site's main entry is a gravel road off Sand Hill Road. Badfish Creek lies near the site's east border. The landfill began operation in the mid-1960s. During that time, it accepted household, industrial and construction wastes. Industrial waste included solvents from paint manufacturing, paint waste, and oily residues. The contaminant of concern was tetrahydrofuran. About 700,000 cubic yards of waste was disposed of there before it closed in 1977.
The cleanup was done in two phases. In 1994, landfill covers were built over the entire area. A landfill gas collection system was also installed along with trenches and piping. In 1997, the ground-water cleanup began which consisted of extraction and treatment. Construction continued until 2000 when a technology called a fixed-film bioreactor system came online. It routes water first to a wetland area and subsequently to Badfish Creek.
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EPA completed a review of the site's cleanup. This type of review is required at least every five years where the cleanup is complete but hazardous waste remains managed on-site. These reviews are done to ensure that the cleanup continues to protect people and the environment.
The review included:
- An evaluation of background information
- Cleanup requirements
- Effectiveness of the cleanup and any anticipated future actions
- Maintenance and monitoring efforts
- An analysis of ways for EPA to operate more efficiently
The review found the cleanup continues to protect people and the environment. The next scheduled review will be in 2020.
- Proposed Plan (PDF) (18pp, 1.2MB) May 1992
- Explanation of Significant Differences (PDF) (7pp, 392k) June 1997
- Feasibility Study (PDF) (265pp, 12.4MB) March 1992
- Record of Decision (PDF) (69, 3.4MB) September 1992
- Fourth five-year review (PDF) (72pp, 4MB) February 2015
- Third five-year review (PDF) (135pp, 24.6MB) February 2010
- Second five-year review (PDF) (64pp, 3.2MB) 2005
- First five-year review (PDF) (8, 469k) 2000
- Unilateral Order (PDF)(56pp, 3.2MB) March 1993
- Administrative Order on Consent (AOC) (PDF) (87pp, 2.7size) 1987
- Consent Decree (PDF) (81pp, 1.8MB) March 2005