The Lowry Landfill Superfund Site

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The Lowry Landfill Superfund Site is located in Arapahoe County, Colorado, approximately 2 miles east of Aurora. It consists of approximately 507 acres of waste disposal area and is operated by Waste Management of Colorado, Inc. The land surrounding the site consists of native prairie grass and a wetland located along a local creek. Sections around the site are zoned for agricultural use including cattle grazing and non-irrigated wheat farms. 1 The area is home to numerous endangered species including the bald eagle and peregrine falcon. Due to the large amounts of wastes disposed on the site between 1965 and 1980, it became extremely contaminated with a variety of inorganic and organic contaminants. From 1984 to 1993, the EPA oversaw remedial investigation and feasibility studies that were performed by all responsible parties. Since its listing as a superfund site in 1984, multiple remedial actions have been performed in order to rehabilitate the site. These include clay barrier walls around the site, a groundwater collection system, a soil cover for the main landfill, as well as a landfill gas collection system. Groundwater that is collected on the site is treated at an onsite water treatment facility. In 2007, construction began on an onsite gas to energy plant that utilizes the methane produced by the landfill site. The electricity produced by the plant is enough to power 3000 households. 1 Today, use of land and groundwater on and near the site is still restricted by the state of Colorado.1

History

Starting in 1965, the city of Denver operated Lowry landfill as a combination municipal and industrial waste dump site. Local businesses and residences from the Denver metro area deposited their solid and liquid wastes in the ...

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Appendix 1

Figure 1: Outline of treatment components currently in action in the Lowry Landfill site.5

Table 2: Description of treatment components currently in use in the Lowry Site. 6

Bibliography

1. http://www2.epa.gov/region8/lowry-landfill

2. http://www.lowrylandfillinfo.com/the-site/site-history/

3. http://www2.epa.gov/region8/lowry-landfill

4. http://www.epa.gov/superfund/sites/rods/fulltext/r0894087.pdf

5. http://www2.epa.gov/sites/production/files/2013-10/documents/lowrylandfill_cipaddendum-sep2013.pdf

6. http://www2.epa.gov/sites/production/files/2013-10/documents/lowrylandfill_cipaddendum-sep2013.pdf

7. http://www.weitzlux.com/environmentallawsuit/colorado/lowrylandfill_145559.html

8. http://www.epa.gov/superfund/cleanup/index.htm

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