EPA Issues Explanation of Significant Differences for PCE Southeast Contamination Superfund Site in York, Nebraska
Changes outlined by document are necessary for installation of remedial system
LENEXA, KAN. (FEB. 2, 2024) – The U.S. Environmental Protection Agency (EPA) Region 7 has issued an Explanation of Significant Differences (ESD) for Operable Unit (OU) 1 of the PCE Southeast Contamination Superfund Site in York, Nebraska.
Per the ESD, EPA Region 7 plans to demolish a vacant building at the northeast corner of West 7th Street and North Platte Avenue. This is a change to EPA’s original Remedial Alternative, issued in the 2018 Record of Decision (ROD), but necessary to safely complete the installation of the in-situ thermal remediation system at the site.
This remediation system is responsible for heating the soil; ensuring the soil is heated properly with the support of temperature sensors; and capturing and treating contaminated vapors within the extraction wells to remove tetrachloroethylene (PCE). A vapor system will take the extracted, contaminated vapors from the thermal system, clean the contamination from the vapors, and discharge clean air into the atmosphere.
EPA estimates remedial action at OU1 to be completed by fall 2025. EPA anticipates no impacts to people’s health and the environment, based on the new work required for OU1.
The issuance of the ESD is unrelated to the supply chain delay that is impacting Operable Unit 2 of the site.
Read the Explanation of Significant Differences for OU1.
Learn more about the PCE Southeast Contamination Superfund Site in York, Nebraska.
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