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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
6/24/1988

Final Date
8/30/1990

Chemical Sales Company

Chemical Sales site map
Click here for an interactive map

Site Type: Deleted NPL
City: Denver
County: Denver
Street Address: 4661 Monaco St.
Zip Code: 80216
EPA ID#: COD007431620
Site ID#: 0800866
Site Aliases: Dahlia NPL Staging
Congressional District: 1st

Site Description

The Chemical Sales Company (CSC) Site (the "Site") covers about five square miles in a mainly light- industrial area of northeastern Denver. The company was a wholesale distributor of commercial/industrial chemicals, detergents and water leisure products.

Groundwater studies by EPA led to the discovery of the Site as a source of volatile organic compound (VOCs) contamination in the area. The 1990 Risk Assessment showed that use of the contaminated groundwater for drinking, cooking or bathing could increase the chance of developing cancer. Breathing indoor air poses a potential risk if residents use the contaminated water for showering, bathing or cooking.

The next Five-Year Review is due by the end of 2012.

EPA proposed the CSC Site for its National Priorities List in June 1988 and finalized the listing in August 1990.

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Site Risk

Media Affected Contaminants Source of Contamination
groundwater, air, soil, liquid waste, solid waste DCA, DCE, total 1, 2-DCE, TCA, TCE, PCE, BZ, VC Distributor of commercial/industrial chemicals, detergents and water leisure products

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Cleanup Progress

These cleanup activities have been completed:

  • Connection of over 400 residences to the South Adams County Water and Sanitation District (SACWSD) municipal supply in 1986, 1992 and 1995.
  • Construction of the Klein Treatment Plant for SACWSD in 1989.
  • Removal of leaking and corroded drums from the CSC property in 1989.
  • Construction of an air sparging/soil-vapor extraction system in 2000 to clean up the source area.

Current Operation & Maintenance (O&M) activities include operating the system and monitoring groundwater throughout the Site.

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Community Involvement

Community comment was solicited for the Five-Year Review completed in August 2007.

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Site Documents

The documents below are Adobe PDF files (about PDF files)

Annual Update to the Five-Year Review, December 2008 (PDF, 3 pp, 79K)

Five-Year Review, August 2007 (PDF, 65 pp, 2.24 MB)

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Contacts

EPA

Armando Saenz
Superfund Project Manager
U.S. EPA Region 8
1595 Wynkoop Street
Denver, CO 80202-1129
(303) 312-6559 or
1-800-227-8917 x 6559 (Region 8 only)
Email: saenz.armando@epa.gov

John Dalton
EPA Community Involvement Coordinator
U.S. EPA Region 8
Denver, CO 80202-1129
(303) 312-6633
Email: dalton.john@epa.gov

Colorado

Jeannine Natterman
Public Information Officer
Colorado Department of Health and Environment (CDPHE)
(303) 692-3303
1-888-569-1831
Email: jeannine.natterman@state.co.us

Fonda Apostolopoulos
Onsite Coordinator
CDPHE
(303) 692-3411
Email: fonda.apostolo.state.co.us

View Documents at:

EPA Superfund Records Center
1595 Wynkoop Street
Denver, CO 80202-1129
(303) 312-6473 or
1-800-227-8917 x 6473 (Region 8 only)

Colorado Dept. Public Health & Environment (CDPHE)
Hazardous Material & Waste Management Division.
Record Center - Building B, Second Floor
4300 Cherry Creek Drive South
Denver, CO 80246-1530
(303) 692-3331

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