The NRC issued an Environmental Assessment and Finding of No Significant Impact (FONSI) for a TVA exemption request at Watts Bar Nuclear Plant, Units 1 and 2, located in Rhea County, Tennessee. TVA seeks relief from the 10 CFR 37.11(c)(2) requirement to install a monitored alarm at the access control point of the old steam generator storage facilities (OSGSFs). The NRC concluded the exemption poses no significant environmental impacts because the robust concrete-panel structures physically preclude rapid unauthorized access, no construction or facility modifications are involved, and both the proposed action and no-action alternative result in the same environmental baseline.