Superfund Information Systems: Site Profile

Superfund Site:

CENTRE COUNTY KEPONE
STATE COLLEGE, PA

Health & Environment

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What Are the Risks at the Site?

The remedy at operable unit (OU1) is protective of human health and the environment in the short-term. All exposure pathways that could result in unacceptable risks are being controlled. The groundwater remedy for OU1 is generally functioning as intended by the decision documents, but there are areas where elevated concentrations remain. Additional data is being collected to refine the current understanding of contaminant distribution and remedy effectiveness.

A vapor intrusion (VI) study for off-site residences and businesses in the area of the groundwater plume concluded that there are no Site-related VI concerns in the residential area downgradient of the RUTGERS Organics Corporation (ROC) property. The results of three shallow groundwater monitoring wells located east of College Avenue do not indicate the presence of Site-related contamination and therefore, VI for properties located west of College Avenue is unlikely. Additional evaluation of the shallow aquifer will be conducted to delineate the current extent of the shallow groundwater plume and its potential impact on commercial properties west of the Site. Annual evaluations will be performed for the commercial property to assess whether there are changes in building conditions or indoor air levels.

In order for the OU1 remedy to be protective in the long term, institutional controls should be implemented to prohibit installation of public or private wells in the plume downgradient of the ROC property.

The remedy at OU2 is protective of human health and the environment. Contaminated sediments from the upper and lower freshwater drainage ditch, Thornton Spring, and Thornton Spring drainage channel were removed and disposed off-site. Impacted soils from the Former Spray Field Area were consolidated on the Remediation Parcel and capped with a soil cover. No exposure pathways are complete.

The remedy at OU3 is protective of human health and the environment. Contaminated soils were excavated and disposed off-site.

The remedy at OU4 is protective of human health and the environment because the soil vapor extraction system is operating as designed. No exposure pathways are complete. Additional evaluation should be considered to determine if soil concentrations meet cleanup goals.

A full list of contaminant descriptions and associated risk factors are available from the Agency for Toxic Substances and Disease Registry (ATSDR), an arm of the Centers for Disease Control.

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Contaminant Information

View a full list of contaminants of concern for this site.

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Performance Measures

EPA uses performance measures to track environmental results at Superfund sites. If you have any questions or concerns about the measures at this site, please contact the site team members listed under Site Contacts.

Read more about Superfund Remedial Performance Measures.

Performance
Measure
Status at this
Superfund Site
What does this mean?
Human Exposure Under Control Yes Yes means assessments indicate that across the entire site:
  1. There are currently no unacceptable human exposure pathways; and
  2. EPA has determined the site is under control for human exposure.

No means an unsafe level of contamination has been detected at the site and a reasonable expectation exists that people could be exposed.

Insufficient data means that, due to uncertainty regarding exposures, one cannot draw conclusions as to whether human exposures are controlled, typically because:
  1. Response to the contamination has not begun; or
  2. The response has begun, but it has not yet generated information sufficiently reliable to evaluate whether there are currently any unacceptable human exposure pathways at the site.
Groundwater Migration Under Control Yes

Yes means EPA reviewed all information on known and reasonably expected groundwater contamination. EPA concluded the migration of contaminated groundwater is stabilized and there is no unacceptable discharge to surface water. EPA will conduct monitoring to confirm that affected groundwater remains in the original area of contamination.

No means EPA has reviewed all information on known and reasonably expected groundwater contamination, and the migration of contaminated groundwater is not stabilized.

Insufficient data means that due to uncertainty regarding contaminated groundwater migration, EPA cannot draw conclusions as to whether the migration of contaminated groundwater is stabilized.

Construction Complete Yes

Yes means the physical construction of the cleanup is complete for the entire site.

No means either physical construction is not complete or actions are still needed to address contamination.

Sitewide Ready for Anticipated Use Yes Yes means:
  1. All cleanup goals affecting current and reasonably anticipated future land uses of the entire site have been achieved, so there are no unacceptable risks;
  2. All required land-use restrictions or other controls have been put in place; and
  3. The site has achieved Construction Complete status.

No means that one or more of these three criteria have not been met. However, a site listed as no may still have redevelopment occurring on portions of the site and may be eligible for additional redevelopment.

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