Document: NUREG-1555
Document ID: b5d0daf9-9138-4935-a8fb-b1fed4498171
Document Type: esrp
Title: DISCHARGE SYSTEM
Source: NUREG-1555
Source URL: https://www.nrc.gov/reading-rm/doc-collections/nuregs/staff/sr1555/initial/
Revision Date: 2007-10
Chapter: 5
Section ID: 5.3.2
CFR Part: 
CFR Title: 

Content:
` rivers and streams ` lakes and reservoirs ` estuaries ` seacoast. Thermal Effects The reviewer should consider species in the vicinity of the station and their susceptibility to thermal effects. (1) Consider the following: ` maximum sustained temperatures for each season that are consistent with maintaining desirable levels of productivity ` maximum levels of metabolic acclimation to warm temperatures that will permit return to ambient winter temperatures if artificial sources of heat cease ` temperature limitations for survival of brief exposures to temperature extremes, both upper and lower ` if spawning or nursery areas are affected, restricted temperature ranges for various stages of reproduction, including (for fish) gonad growth and gamete maturation, spawning migration, release of gamete, development of the embryo metamorphosis, emergence, and other activities of early life stages, such as commencement of independent feeding by juveniles, and temperature required ` thermal limits for diverse compositions of species of aquatic communities, particularly where nuisance growths of certain organisms create reduction in diversity or where important food sources or chains are altered ` thermal requirements of downstream aquatic life where upstream warming of a cold-water source will adversely affect downstream temperature requirements ` areal extent of the plume NUREG-1555 5.3.2.2-8 October 1999 ` percent of unaffected area ` physical concentrating factors. (2) Identify the most thermally intolerant “important” species expected to be affected. (3) Quantify the magnitude of potential thermal impacts to the aquatic ecosystem. (4) Evaluation of thermal impacts, addressing the following recommendations: ` Growth of aquatic species should be maintained at levels necessary for sustaining actively growing and reproducing populations if the maximum weekly average temperature in the zone inhabited by the species at that time does not exceed one-third the range between