Document: NUREG-1555
Document ID: 62bf53b4-c75d-48ce-825c-84c032fa32be
Document Type: esrp
Title: AQUATIC ECOSYSTEMS
Source: NUREG-1555
Source URL: https://www.nrc.gov/reading-rm/doc-collections/nuregs/staff/sr1555/initial/
Revision Date: 2007-10
Chapter: 4
Section ID: 4.3.2
CFR Part: 
CFR Title: 

Content:
within the region under consideration, relative impacts, and long term net effects - The assessments of relative impacts should include statements expressed in percentage terms in which the amount of expected resource loss is related to the total resource in the immediate region and in which the total resource in the immediate region is related to that in the surrounding regions. - The assessments of long term net effects should include statements about whether impacts represent long-term net losses, long-term net gains, or something in between. For example, short term impacts to individuals in the local impact area may be severe while long-term impacts to the local population may represent no net losses. ` disturbance of benthic areas. All dredged areas or areas affected by dredging may be considered as temporarily lost habitat; therefore dredging should be limited, if possible. ` surface runoff. Good construction practices will generally control surface runoff. Where drainage courses represent an especially important resource, attention should be given to measures for their protection during construction or refurbishment. The reviewer should (1) determine if construction activities affecting water quality (e.g., runoff, turbidity) will comply with Federal, State, regional, and local water-quality standards, and (2) reach a conclusion as to whether controls proposed by the applicant will ensure satisfactory protection of surface waters. ` dewatering on wetlands. Guidelines under the CWA Amendments of 1972, the Coastal Zone Management Act of 1972, and the Marine Sanctuaries Act of 1972 should be followed in evaluating the significance of dewatering on wetlands. Generally, dewatering of biologically productive wetlands may be considered an adverse impact that should be avoided. The percentage loss of such wetlands in the region should be considered to place the loss in perspective for the licensing decision. Because of the importance of wetlands, alternatives to