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TDEC updates Oak Ridge council on tri‑party cleanup, flags interim ROD limits
Summary
Tennessee Department of Environment and Conservation staff told the Oak Ridge council that recent interim Records of Decision mark progress at ETTP but that many RODs are decades old and may not fully protect groundwater at Y‑12 and ORNL; TDEC said it is pursuing removal actions and interagency work to align cleanup with reuse.
Tennessee Department of Environment and Conservation staff briefed the Oak Ridge council on Tuesday on the state's role in overseeing cleanup at the Oak Ridge Reservation under the Federal Facilities Agreement with DOE and the U.S. Environmental Protection Agency.
“A lot of what we do is document review and plan approval,” a TDEC representative said, adding that the agency samples surface water, air and sediments and publishes those results in an annual environmental monitoring report available to the public. The speakers said two Record of Decision documents for groundwater at the East Tennessee Technology Park were signed last year, a milestone for that site.
TDEC staff emphasized that many interim RODs are roughly 20 years old and reflected land‑use assumptions that have changed. “Those interim goals are something else we're battling with ourselves, not just with DOE,” one presenter said, noting the difficulty of updating cleanup goals while supporting Y‑12’s mission and enabling redevelopment.
The agency described technical pathways to do more aggressive cleanup without formally rewriting older interim RODs — for example, target removal actions and the Excavation/Penetration Permit process that governs excavations deeper than two feet — and said it is working with DOE and EPA to pursue those tools where appropriate.
Council members pressed TDEC on protections for deeper contamination and groundwater. TDEC staff acknowledged the limits of some interim decisions and said they are raising those concerns in interagency project teams and reviewing site‑specific cleanup decisions (including a clean parcel review for SSP‑2) before land transfers or redevelopment.
TDEC also highlighted ongoing environmental monitoring as an independent check on DOE sampling and encouraged the public to review the environmental monitoring report; presenters said the monitoring has not identified a current threat to the public. The update closed with an offer to take follow‑up questions and continued coordination with local officials.
