Superfund Information Systems: Site Profile

Superfund Site:

NORTH RIDGE ESTATES
KLAMATH FALLS, OR

Cleanup Activities

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Background

The North Ridge Estates Superfund Site is a residential subdivision located three miles north of Klamath Falls, Oregon. The site is contaminated with asbestos as a result of the improper demolition of approximately eighty 1940s-era military barracks buildings. North Ridge Estates was added to the National Priorities List in 2011 after annual efforts to remove contamination were not effective for long-term protection of human health.

Asbestos-containing materials and soil are being removed from the old military barracks site during three seasons of cleanup from 2016-2018. Additional contamination at the nearby Kingsley Firing Range, also part of the site, will be investigated and completed at a later time.

Clean Up Update:

Season 3 remedial construction has begun. This is the final construction season for cleanup and site restoration. During this construction season we will: excavate and restore 11 properties and remove about 115,000 cubic yards of materials; open the Memorial Park Repository; remove and replace North Ridge and Hunters Ridge Roads; install final septic systems; install the final cover on both repositories; and continue seeding and landscaping, deck replacement, and paving work. Cleanup and restoration will be completed by the end of 2018.

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What Has Been Done to Clean Up the Site?

The North Ridge Estates Superfund Site is a residential subdivision contaminated with asbestos as a result of the improper demolition of approximately eighty 1940s-era military barracks buildings. EPA added the site to the National Priorities List in 2011 after annual efforts to remove asbestos contamination were not effective for long-term protection of human health.

To reduce risk to local residents, EPA's emergency removal and response program annually removed asbestos-containing materials and contaminated soil and debris from the site between 2003 and 2009. EPA completed a Remedial Investigation and Feasibility Study to develop a permanent remedy for the site. The Oregon Department of Environmental Quality is actively involved in the site cleanup.

Asbestos-containing materials and soil are being removed from the old military barracks site during three seasons of cleanup from 2016-2018. Additional contamination at the nearby Kingsley Firing Range, also part of the site, will be investigated and completed at a later time.

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What Is the Current Site Status?

The North Ridge Estates Superfund Site is a residential subdivision contaminated with asbestos as a result of the improper demolition of approximately eighty 1940s-era military barracks buildings. EPA added the site to the National Priorities List in 2011 after annual efforts to remove asbestos contamination were not effective for long-term protection of human health.

Asbestos-containing materials and soil are being removed from the old military barracks site during three seasons of cleanup from 2016-2018. Additional contamination at the nearby Kingsley Firing Range, also part of the site, will be investigated and completed at a later time.

Season 3 remedial construction began in May 2018. This is the final construction season for cleanup and site restoration. During this construction season we will: excavate and restore 11 properties and remove about 115,000 cubic yards of materials; open the Memorial Park Repository; remove and replace North Ridge and Hunters Ridge Roads; install final septic systems; install the final cover on both repositories; and continue seeding and landscaping, deck replacement, and paving work. Cleanup and restoration will be completed by the end of 2018.

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Emergency Response and Removal

EPA first responded to the site in 2003 at the request of Oregon Department of Environmental Quality. From 2003 to 2005, all visible asbestos was picked up to address immediate threats to human health. However, due to a process called "frost heave" when the soil freezes and thaws, new contamination surfaced each spring. EPA temporarily relocated residents during the summer of 2005 and all but a few residents were permanently relocated through a third-party settlement with the polluter in 2006. Asbestos and soil removals continued for several years, but it became clear that the extent of contamination at North Ridge Estates was far more extensive than could be addressed through the removal program.

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