Document: NUREG-1555
Document ID: f52daa09-fd60-41f5-a4d7-437161ee5649
Document Type: esrp
Title: CIRCULATING WATER 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: 9.4.2
CFR Part: 
CFR Title: 

Content:
ternatives to identify those that may be considered environmentally equivalent. For this condition, environmental equivalence means that an alternative has no unavoidable adverse impacts and meets CWA requirements. The reviewer should not indicate a preference between environmentally equivalent alternatives nor should a benefit-cost balancing be made when this condition prevails. Alternatives having unavoidable adverse environ- mental impacts or that do not meet CWA requirements should be judged environmentally inferior to proposed circulating water systems meeting these conditions. ` When the reviewer determines that the proposed circulating water system will meet CWA require- ments, 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 the nature and magnitude of the proposed system’s environmental impacts. An environmental review for the alternatives may be needed following the analysis and evaluation procedures of the appropriate ESRP Chapters 4.0 and 5.0. The following criteria apply to this evaluation: NUREG-1555 9.4.2-14 October 1999 - Environmental preference will be established when an alternative can be shown to have no unavoidable adverse impacts and will meet CWA requirements. - Environmental preference may be established when an alternative that meets CWA 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 involve consultation with the EPM and the appropriate ESRP Chapters 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 CWA require- ments can be