Region 8

Sand Creek Industrial

Note: EPA no longer updates this information, but it may be useful as a reference or resource.

site location map Site Type: Deleted NPL
City: Commerce City
County: Adams
Street Address: 33rd Ave. and Dahlia St.
ZIP Code: 80022
EPA ID: COD980717953
SSID: 0814
Site Aliases: Acid Neutralization Pits (L-C Corp.), others
Congressional Districts: 1, 7

Site Description

The Sand Creek Industrial site occupies about 550 acres in Denver and Commerce City, Colorado. Four sources of contamination, all now inactive, were known to exist: an oil refinery, a pesticide manufacturing facility, acid pits and a landfill.

Map of the Superfund site boundary, February 2007

EPA conducted sampling at the site and found the soil and groundwater contaminated with volatile organic compounds (VOCs), pesticides, herbicides and arsenic. Exposure to such contaminated groundwater or soil could cause serious health problems, such as cancer and damage to the liver, central nervous and respiratory systems. People also could be exposed by inhaling contaminated dust and vapors. EPA proposed the site for the Superfund National Priorities List (NPL) in December 1982 and added the site in September 1983. It was deleted from the NPL in December 1996 after completion of the cleanup. Various parcels of land have recently been sold for redevelopment.

Post-Construction Activities

Current operation and maintenance (O&M) activities include:

  • Operating the landfill system
  • Maintaining the fence around the landfill
  • Maintaining the vegetative cover over the landfill
  • Monitoring groundwater throughout the site

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Site Risk

Results of the most recent five-year review completed September 17, 2010 indicated that the remedy currently protects human health and the environment.

Media Affected Contaminants Source of Contamination
soil, solid waste, liquid waste, groundwater, surface water, air, debris VOCs, pesticides, herbicides and arsenic an oil refinery, a pesticide manufacturing facility, acid pits and a landfill

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Cleanup Progress

Cleanup Completed

These cleanup activities have been completed:

  • Installation of a methane gas collection/treatment system at the landfill in 1991.
  • Removal of four buildings, four rail cars, two concrete tanks and 13 steel tanks in 1992.
  • Treatment of subsurface soils, using soil vapor extraction in 1994.
  • Removal of oily liquids floating on groundwater in two localized areas, using dual vapor extraction in 1995.
  • Treatment of surface soils, using low temperature thermal treatment in 1994.

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Community Involvement

Community comment was solicited for the five-year review completed in September 2010. The next five-year review will be completed by September 2015.

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Site Documents

Update to the Five-Year Review, July 2011

Fourth Five-Year Review Report (PDF), September 2010(108 pp, 4.3 MB, about PDF)

Records of Decision

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Armando Saenz
EPA Superfund Project Manager
U.S. Environmental Protection Agency, Region 8
1595 Wynkoop Street (8EPR-SR)
Denver, CO 80202-1129
800-227-8917 ext. 312-6559 (toll free Region 8 only)

Site Information Repositories:

EPA Superfund Records Center
1595 Wynkoop Street
Denver, CO 80202-1129
To request copies of administrative record documents call:
800-227-8917 ext. 312-7273 (toll free Region 8 only)

Colorado Department of Public Health and Environment
HMWMD Records Center
4300 Cherry Creek Drive South
Denver, Colorado 80246-1530
888-569-1831 ext. 3331 (toll free)
303-759-5355 FAX
By appointment only


Fonda Apostolopoulos
State Project Officer
Colorado Department of Public Health and Environment
4300 Cherry Creek Drive South
Denver, CO 80246-1530
888-569-1831 ext. 3411 (toll free)

Warren Smith
Community Involvement Manager
Colorado Department of Public Health and Environment
4300 Cherry Creek Drive South
Denver, CO 80246-1530
888-569-1831 ext. 3373 (toll free)

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