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Site Information
Site Description
Site Risk
Cleanup Progress
Site Documents
Community Involvement
Site Photos
Contacts


National Priorities List (NPL) History

Proposed Date
10/22/1999

Final Date
5/11/2000

Construction Completion Date
10/01/2004

Superfund Program

Intermountain Waste Oil Refinery

Intermountain Waste Oil Refinery site map
Click here for an interactive map
Site Type: Final NPL
City: Bountiful
County: Davis
Street Address: 995 South 500 West
Zip Code: 84010
EPA ID#:
UT0001277359
Site ID#: 0800753
Site Aliases: Intermountain Oil
Congressional District: 01

Site Update
The 2008 Five-Year Review Report has been posted in the Site Documents section.

Site Description

The Intermountain Waste Oil Refinery (IWOR) site covers about two acres at 955 South 500 West in a residential/commercial area of Bountiful, Utah. Contaminants, such as solvents, have been found on the site and have contaminated the groundwater underlying the site. Drinking water has not been affected by this contamination.

A number of different reported operations have occurred at the Site including:

At the start of the oil blending business, green bottoms (a fraction of crude oil) were blended with diesel fuel and sold for dust control at coal mines. Over subsequent years, used oil replaced the green bottoms and the end product was sold to cement kilns for use as fuel. The used oil was collected from facilities in Utah, Nevada, Idaho, and Wyoming. Waste sludge was reportedly disposed of in an offsite landfill and wastewater that may have remained after the treatment process was boiled off at the Site. Above ground tanks used by IOC were located in an unpaved area surrounded by a soil berm.

The business was cited a number of times by the Davis County Health Department and the State of Utah. Neighbors of the site complained of odors and health problems, which they believed were associated with the wastes at the site. The owners took steps to resolve some of these problems. The company forfeited its permit to operate on May 3, 1993.

In 1993, the owners dismantled the refinery and consolidated some wastes into a pile, then covered some of the area with several inches of gravel.

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Site Risk

The IWOR site is organized into two Operable Units (OUs). OU 1 addressed soils, subsurface soils and potential contaminant sources on site, including tanks, drums and containers. OU 2 covered groundwater.

Under OU1 a human health and screening level ecological risk assessment was completed to determine the risk from soil contamination. The risk assessment determined accumulation of contaminant vapors inside a building constructed on the site would likely create unacceptable risk.

EPA performed a human health risk assessment under OU2 to evaluate potential hazards from exposure to groundwater contamination at the site. The OU2 Baseline Human Health Risk Assessment calculates the risk from three potential exposure pathways:

For each of the above pathways, non-cancer and cancer risk for current of future on-site workers, or future residents was calculated. The only chemical that contributed non-cancer or cancer risk above a level of concern was trichloroethylene (TCE). For non-cancer and cancer risk, the exposure pathway of chief concern is ingestion, with a contribution from inhalation of vapors during water use. Both the non-cancer and cancer calculated risk is only slightly above the values that indicate there could be a potential health impact. Exposure to TCE could cause various health effects depending on the contaminant concentration and length of exposure. Breathing small amounts of TCE may cause headaches, dizziness, lung irritation, poor coordination, and difficulty concentrating. Drinking small amounts of TCE over long periods of time may cause liver and kidney damage, impaired immune system function, and impaired fetal development in pregnant women. The extent of some of these effects is not yet clear.

Media Affected Contaminants Source of Contamination
Liquid waste, soil Solvents Petroleum processing wastes

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Cleanup Progress

The site was proposed for listing on the National Priorities List (NPL) in October of 1999 and finalized on May 11, 2000. In March, 2001, the field investigation began. A chronology of milestones follows:

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Site Documents

Note: the following documents are VERY LARGE PDF FILES (about PDF files)

2008 Five Year Review Report (PDF, 5 MB)

2008 Five Year Review Report Attachments, including site photos and interview records (PDF, 3 MB)

Update Fact Sheet, October 2006 (PDF, 2 pp, 120 kB)

Record of Decision, Operable Unit 1 (PDF, 4.3 MB)
November 2002

Record of Decision, Operable Unit 2 (PDF, 1.7 MB)
August 2004

Community Involvement

The EPA and UDEQ routinely conduct public meetings, issue fact sheets, and interview citizens to ensure that the community is heard by the regulatory agencies. The Administrative Record contains the documents and information that EPA used to make its final remedy (cleanup) selections.

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Site Photos

The following two links lead to images showing the site before and after removal of the tanks and scrap.

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Contacts

EPA

Lisa Lloyd
Remedial Project Manager
US EPA Region 8 (EPR-SR)
1595 Wynkoop Street
Denver, CO 80202-1129
303-312-6537
1-800-227-8917 x 6537 (Region 8 only)
Email: lloyd.lisa@epa.gov

John Dalton
EPA Community Involvement Coordinator
US EPA Region 8 (8OC)
1595 Wynkoop Street
Denver, CO 80202-1129
303-312-6633
or 1-800-227-8917 x 6633 (Region 8 only)
Email: dalton.john@epa.gov

Utah

Tony Howes
Project Manager
UDEQ - Environmental Response &
Remediation Div.
168 North 1950 West
Salt Lake City, UT 84116
(801) 536-4283
Email: thowes@utah.gov

Dave Allison
Community Involvement Specialist
UDEQ
168 North 1950 West
Salt Lake City, UT 84116
(801) 536-4479
Email: dallison@utah.gov

View Documents at:

EPA Superfund Records Center
1595 Wynkoop Street
Denver, CO 80202-1129
(303) 312-6473

Davis County Library, South Branch
825 S. Main St.
Bountiful, UT 84010
(801) 295-8732

 

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