Region 8

Broderick Wood Products

Broderick Wood Products site location

Site Type: Final NPL
City: Denver
County: Adams
Street Address: 5600 Huron St.
ZIP Code: 80221
EPA ID: COD000110254
SSID: 0831
Site Aliases: Broderick Investments
Congressional District: 7

What's New?

Updated October 2011

Today, the cleanup at the Broderick Wood Products site is complete and operation and maintenance (O&M) and redevelopment activities are currently underway. EPA, the Colorado Department of Public Health and Environment (CDPHE) and the potentially responsible party (PRP) have been working together to redevelop the site without compromising the Superfund remedy. EPA, CDPHE and the PRP are also working together to return the remedy to normal operation, maintenance and monitoring to ensure protectiveness.

Site Description

The Broderick Wood Products (BWP) site, in Adams County, Colorado, is a former wood treatment facility. BWP operated the facility from 1947 to 1982 on the 64-acre, triangular-shaped piece of property. As part of the wood treatment process, BWP used creosote and pentachlorophenol (PCP) to treat power poles, fence posts, railroad ties and other wood products. Hazardous substances from the process were disposed of primarily in two unlined impoundments in the northwest portion of the property.

Map of the Superfund site boundary, February 2007

In August 1980, BWP submitted a Resource Conservation and Recovery Act (RCRA) permitting application and obtained interim status to operate its facility. As a result of poor waste disposal practices, BWP was investigated numerous times by EPA and CDPHE. In 1981 and 1982, EPA noted several violations of RCRA requirements. In 1981, wood treatment operations ceased because of economic conditions, and BWP’s assets were transferred to a trust called the Broderick Investment Company (BIC). BIC is the PRP for the site. In early 1983, sampling was conducted and PCP was detected in soil and groundwater samples. The site was placed on the National Priorities List (NPL) in September 1984.

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Site Risk

The cleanup at this site has been completed.

Contaminants of concern were polynuclear aromatic hydrocarbons (PAHs), PCP and its byproducts, dioxins and furans (flammable liquids). Potential human health threats included drinking contaminated shallow groundwater or swallowing, inhaling, or handling contaminated soil and wastes.

Media Affected Contaminants Source of Contamination
soil and groundwater polynuclear aromatic hydrocarbons (PAHs), PCP and byproducts, dioxins and furans wood treatment products

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Cleanup Progress

The site achieved Construction Completion with the signing of the Preliminary Close Out Report on September 30, 1996 and the completion of the following cleanup activities by EPA or BIC:

  • Removal of sludges to a reclamation facility from the two former impoundments in 1993
  • Demolition and removal of buildings and structures in the former process area in 1994
  • Construction of land-treatment units (LTUs) for contaminated soils in 1994
  • Excavation of contaminated soils and placement in the LTUs in 1994
  • Construction of a treatment system to collect and treat contaminated groundwater in 1994 (modified in 1996)
  • Construction of a bioventing system to treat the subsurface in the former process area in 1996
  • Construction of a cutoff wall on the north side of the property to better contain the northward-moving groundwater in 1996
  • Placement of a one-foot soil cover throughout the property in 1996
Rail line constructed during the 2004 UP project
Rail line constructed during the 2004 UP project

In 2003, Union Pacific Railroad (UPRR) approached EPA, CDPHE and BIC about a regional project that included the construction of a rail line embankment across the site. The massive project required significant amounts of time and effort by all parties, from the planning stage in mid-2003 to the completion stage in late 2004. Ultimately, the project enhanced/retrofitted the original remedy. Among other improvements, the project added cutoff walls on the west and east sides of the site to enhance hydraulic control of contaminated groundwater in the shallow aquifer.

In 2002, BIC dismantled the bioventing system in the former process area. In 2006, it was determined that the soil in the LTUs had been treated to treatment levels. The LTUs will need to be capped, closed and maintained in accordance with RCRA standards. A portion of LTUs will remain open in case any contaminated soil is encountered during future redevelopment activities.

Current O&M activities include operating the groundwater treatment system and monitoring groundwater throughout the site.

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Community Involvement

Community involvement plays an important role in the Superfund process. EPA uses a number of different tools and resources to promote effective, on-going, meaningful community involvement. The goals of the Superfund community involvement program are to:

  • Keep communities affected by sites informed throughout the cleanup process
  • Provide opportunities for communities to comment and offer their input about site cleanup plans
  • Facilitate the resolution of community issues tied to a site

Notices were placed in local newspapers indicating that the 2006 five-year review was in progress.

The UPRR project conducted in 2003/2004 achieved successful completion in large part because of the collaboration and extraordinary efforts of multiple parties, including local residents, UPRR, EPA, CDPHE, Burlington Northern Santa Fe Railroad, the Regional Transportation District, the City and County of Denver, the Colorado Department of Transportation and Adams County. The teamwork demonstrated by all parties allowed day-to-day issues to be resolved in a mutually agreeable manner, and provided a safe forum for the more contentious issues to be discussed and amicably settled.

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EPA places a high priority on land reuse as part of its Superfund response program mission. The Agency tries to select cleanup options that encourage and support future use of a site. We use two fundamental methods to facilitate reuse of Superfund sites:

  • Exploring future uses before the cleanup remedy is implemented, an approach that gives the Agency the best chance of designing cleanup remedies to support the likely future use of a site
  • Working with landowners and communities to remove barriers not considered necessary for the protection of human health or the environment at those sites where remedies are already in place
Reclaimed stockpile area
Reclaimed stockpile area

One option for reuse is the siting of clean and renewable energy projects on contaminated (or formerly contaminated) lands. As part of this effort, EPA is evaluating the potential for energy projects on these properties and working with landowners and communities to identify ways to remove barriers to such projects.

The BWP site has been remediated and is ready for beneficial reuse. It has been subdivided and zoned for I-2 and I-3 industrial uses with the approval of Adams County. A second access road was constructed at the northern boundary to serve as the primary access point and to facilitate redevelopment of the site. In 2007, BIC sold the vast majority of the property to Scott Contracting. Currently, the company is planning to parcel and sell the land.

Broderick Wood Products: Reuse Fact Sheet, September 2013

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Land Use Controls and Other Institutional Controls

Land use controls are the most common type of institutional control (IC). ICs are administrative or legal controls that help reduce the likelihood for human exposure to contamination. ICs can also help protect the integrity of the remedy. Examples of ICs are:

  • Zoning ordinances
  • Environmental covenants
  • Deed notices
  • Well-drilling restrictions
  • Building permits
  • Informational advisories

The Environmental Covenant for the site was recorded on February 7, 2007 with the following limitations:

  • Prohibition on residential and public use
  • Prohibition on agricultural use
  • Restrictions and requirements for soil excavation
  • Prohibition on use of groundwater
  • Prohibition on well construction
  • Prohibition of activities that compromise the integrity of CERCLA remedial actions

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Five-Year Reviews

EPA or the lead agency conducts five-year reviews following the start of a Superfund cleanup when contamination is left on the site. These reviews are repeated every five years. We use these reviews to determine:

  • How the remedy is working
  • If the remedy remains protective of human health and the environment

The results of the fourth five-year review, dated September 27, 2011, indicate that the remedy at the site is not protective of human health and the environment because, since 2009, the remedy has been operated/maintained on a limited/sporadic basis and groundwater monitoring has not been conducted. EPA, CDPHE and the PRP are working together to return the remedy to normal operation, maintenance and monitoring to ensure protectiveness. The next five-year review will be completed by September 27, 2016.

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Site Documents

You will need Adobe Reader to view some of the files on this page. See EPA’s About PDF page to learn more.Fourth Five-Year Review Report (PDF), September 2011(37 pp, 2.7MB)

Environmental Covenant, February 2007

Preliminary Close Out Report, September 1996

Record of Decision for OU2 (PDF), March 24, 1992(56 pp, 127K)

Amendment to Records of Decision for OU1 and OU2 (PDF), September 24, 1991(13 pp, 31K)

Record of Decision for OU1 (PDF), June 30, 1988(49 pp, 89K)

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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


Jim Lewis
State Superfund Project Manager
Colorado Department of Public Health and Environment
4300 Cherry Creek Drive South
Denver, CO 80246-1530
888-569-1831 ext. 3390 (toll free)

Warren Smith
Community Relations Manager
Colorado Department of Public Health and Environment
4300 Cherry Creek Drive South
888-569-1831 ext. 3373 (toll free)

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Photo/Video Gallery

Click on a thumbnail below to view the full size image.

North entrance to site, the main point of entry
Water treatment facility
Activated carbon polishes the discharge water
Fisher Ditch, located along the northern boundary of the site
Signage outside south entrance

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