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
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suits, percent reduction in harvest, percent loss of habitat, or other appropriate quantifiers. In absence of more sophisticated population models, these determinations can usually be based on percent of habitat type lost. (f) If threatened or endangered species are known to occur in the project area, and the proposed project is predicted to add to their further endangerment, consult with the U.S. Fish and Wildlife Service and/or National Marine Fisheries Service under Section 7 of the Endangered Species Act. (g) Identify potential disturbances of benthic areas by ` placement of intake and discharge structures ` channel modifications for navigation or flow control ` placement and removal of cofferdams ` construction of bulkheads, piers, jetties, basins, and storm sewers ` direct dredging, including the area that may be affected by resulting siltation and turbidity. (h) Analyze the importance of these disturbed benthic areas to “important” species, taking into account the relationship between the area disturbed and the remaining comparable undisturbed area in the region available for the continued maintenance of impacted biota. NUREG-1555 4.3.2-8 October 1999 (i) Relate the critical life history and habitat needs of “important” fish and shellfish (e.g., seasonal requirements, migration routes, spawning areas, nursery grounds, and feeding and wintering areas) to the plant construction schedule and consider whether impacts are likely to be of short duration or otherwise reversible. (j) In analyzing such impacts, consider ` percent of the water body cross section that might be obstructed by construction activity at any time ` time and duration of such obstruction ` potential changes to water quality caused by exposure of substrate to contaminants during construction (e.g., dredging for intake channels, cofferdam construction) ` coordinating this review with the District Office of the Corps of Engineers. (k) Identify sediments, petroleum products, pesticides,