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:
tem operation that could be mitigated or avoided through alternative system design or operational practices and procedures, and assist in determining appropriate alternatives. • ESRP 10.1. Provide a list of the unavoidable adverse impacts that are predicted to occur as a result of the proposed operational activity. Data and Information Needs The type of data and information needed will be affected by site- and station-specific factors, and the degree of detail should be modified according to the anticipated magnitude of the potential impacts. The following information should be obtained: ` receiving surface water bodies - bathymetry of the water bodies that may be affected by operation of the plant discharge system, with detailed data in the vicinity of the discharge (from ESRP 2.3.1) - maps depicting station layout with respect to water bodies, including the locations of all intakes and discharges (from ESRP 3.1) - maximum, average maximum, average, average minimum, and minimum monthly temperatures in the water bodies (from ESRP 2.3.1) - erosion characteristics and sediment transport (including rate, bed and suspended load fractions, and gradation analyses) (from ESRP 2.3.1) - for freshwater streams: maximum, average-maximum, average, average minimum, and minimum monthly flow rates; historical drought stages and flow rates by month, 7-day once-in-10-years low flow; important short duration fluctuations (e.g., diurnal release variations from peaking operation of upstream hydroelectric plant, diurnal temperature variations); velocity and temperature distributions (horizontal and vertical) near the discharge structure and downstream to the area of total mixing (from the environmental report [ER] and ESRP 2.3.1) - for lakes and impoundments: description of the lake or impoundment geometry; location and elevation of impoundment outlets; elevation area capacity curves; summary description of operating rules; maximum, average maximum, average, average minimum, and