Document: NUREG-1555
Document ID: b0a0b132-269c-48c5-ac4c-6f67298c2f61
Document Type: esrp
Title: TRANSMISSION SYSTEMS
Source: NUREG-1555
Source URL: https://www.nrc.gov/reading-rm/doc-collections/nuregs/staff/sr1555/initial/
Revision Date: 2007-10
Chapter: 9
Section ID: 9.4.3
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alternatives, nor should a benefit-cost analysis be made when this condition prevails. Alternatives having unavoidable adverse environmental impacts or that do not meet regulatory requirements should be judged environmentally inferior to proposed transmission systems meeting these conditions. ` When the reviewer determines that the proposed transmission system will meet regulatory requirements, but is predicted to have unavoidable adverse environmental impacts, the reviewer should evaluate the identified alternative systems for potential environmental preference to the proposed system. The scope and extent of this evaluation should depend on NUREG-1555 9.4.3-12 October 1999 the nature and magnitude of the proposed system’s environmental impacts. An environmental review of the alternatives may be required following the analysis and evaluation procedures of the appropriate ESRP Chapters 4.0 and 5.0. The following criteria apply to this evaluation: - Environmental preference will be established when an alternative can be shown to (1) have no unavoidable adverse impacts and (2) meet regulatory requirements. - Environmental preference may be established when an alternative that meets regulatory requirements can be shown to have unavoidable adverse impacts that are less severe in both nature and magnitude than those of the proposed system. Determination of environmental preference under these conditions should lead to consultation with the EPM and the appropriate ESRP Chapter 4.0 and 5.0 reviewers. This consultation should result in a joint determination of the status of any such alternative. - Environmental equivalence will be established when an alternative that meets regulatory requirements can be shown to have unavoidable adverse impacts of the same or equiva- lent nature and magnitude as those of the proposed system. - Environmental inferiority will be established when an alternative can be shown to have unavoidable adverse impacts that are more severe in both