Region 8
Serving Colorado, Montana, North Dakota, South Dakota, Utah, Wyoming and 27 Tribal Nations
Superfund Program
National Information
Regional Information
Site Information
National Priorities List (NPL) History
Proposed Date
12/30/1982
Final Date
9/18/1983
Construction Complete
6/17/1992
Deletion Date
6/03/2003
Rose Park Sludge Pit
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Site Type: Completed NPL City: Salt Lake City County: Salt Lake Street Address: 1420 North 1100 West Zip Code: 84116 EPA ID#: UTD9806335452 Site ID#: 0800663 Site Aliases: Rose Park Sludge Congressional District(s): 02, 03 |
Site Description
Rose Park Sludge Pit (the "Site") is a two-acre area in a Salt Lake City park. Local oil refineries disposed of their petroleum wastes at the Site.
EPA published a Notice of Intent to Delete the Site from the National Priorities List (the "NPL") in 1992, and asked the public to comment on the proposed deletion. The Site was removed from the NPL on June 30, 2003. Current Operation and Maintenance (O&M) activities being conducted by Amoco include monitoring of groundwater and the clay cap. The most recent Five-Year Review (4th) was completed in September 2007.
Site Risk
Refinery sludges are very acidic and contain polycyclic aromatic hydrocarbons (PAHs) and sulphur dioxide. Site health risks included the potential for burns to people and animals that came in contact with the sludge or breathed gases from the pit. There was also the potential for groundwater contamination from the unlined sludge pit.
| Media Affected | Contaminants | Source of Contamination |
| Soil, solid waste, groundwater | Acidic refinery sludges with polycyclic aromatic hydrocarbons (PAHs) and sulphur dixoide | Petroleum wastes disposed of from refinery |
Cleanup Progress
The following cleanup activities were completed in 1985 by the potentially responsible party (Amoco Oil Company):
- Construction of a slurry wall around the pit to isolate the wastes and prevent groundwater contamination.
- Installation of a clay cap on top of the pit to prevent the wastes from coming in contact with park visitors, and to keep water from seeping through the pit and contaminating groundwater.
- For additional protection, traffic barriers were placed around the perimeter of the cap to prevent damage.
- Installation of several groundwater wells to monitor the ongoing effectiveness of the slurry wall.
Community Involvement
Community comment was solicited for the most recent Five-Year Review completed in September 2007.
Site Documents
Annual Update to the Five-Year Review December 2008 (PDF, 4 pp, 86 K)
Five-Year Review, September 2007 (LARGE PDF file: 70 pp, 2.6 MB; about PDF files)
Contacts
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