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4.6 Mitigation Measures

As required by the Council on Environmental Quality, this section considers mitigation measures that could reduce or offset the potential environmental consequences of waste management activities and that are not part of the proposed action or its alternatives. DOE has not identified specific measures, other than management controls and standard engineering practices, that would reduce impacts beyond measures that are part of each alternative. If future activities lead to impacts beyond those described herein, mitigation action planning would begin concurrent with consideration of the appropriate NEPA documentation. Based on the potential environmental effects described in this chapter for each alternative, DOE will consider establishing additional programs to reduce environmental impacts.

Many mitigation measures have been implemented as a result of current waste management. Current mitigation measures include administrative or management controls and engineered systems (e.g., backup systems, failsafe designs) that are required by environmental regulations or DOE Orders, and implemented through operating procedures. These activities would continue under each alternative described in this eis.

Management controls include erosion and sedimentation control plans instituted through stormwater pollution prevention plans and their permits; spill prevention control and countermeasures plans; and best management plans. These plans and others are referenced throughout Chapter 4.

As described in Section 4.1.9, DOE has surveyed the undeveloped portions of E-Area for cultural resources and identified 12 archaeological sites that might be eligible for listing on the National Register of Historic Places. Mitigation of potential impacts on these sites will be by avoidance, if possible. If avoidance is not possible, effects of facility construction and operation will be mitigated by data recovery (i.e., an archaeological excavation of the site). Mitigation will be conducted in consultation with the South Carolina State Historic Preservation Office in accordance with the Programmatic Memorandum of Agreement between the South Carolina State Historic Preservation Office, DOE, and the Advisory Council on Historic Preservation.