Document: NUREG-1555
Document ID: 74f36b1a-89a4-45d4-ad9e-7c14d1e708bb
Document Type: esrp
Title: HYDROLOGIC ALTERATIONS AND PLANT WATER SUPPLY
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: 5.2.1
CFR Part: 
CFR Title: 

Content:
), the U.S. Supreme Court granted the States additional authority to limit hydrological alterations beyond the States’ role in regulating water rights. ` Regulatory Guide 4.2, Rev. 2, Preparation of Environmental Reports for Nuclear Power Stations (NRC 1976), contains guidance on the format and content of ERs, including hydrology, water-use, and water-quality issues. Technical Rationale The technical rationale for evaluating the applicant’s hydrologic alternations and plant water supply is discussed in the following paragraphs: A detailed and thorough description of the hydrologic impacts occurring during plant operation is essential for the evaluation of potential impacts to the environment that may result from plant operation. Water quality and water supply are interdependent. Changes in water quality must be considered simultaneously with possible changes in water supply. III. REVIEW PROCEDURES This section of the environmental impact statement (EIS) should be planned to accomplish the following objectives: (1) public disclosure of the hydrologic alterations resulting from plant operation and the comparison of plant water needs with water availability, (2) a discussion of the effects of these altera- tions and water supply/need comparisons, and (3) presentation of staff conclusions regarding the adequacy of plant-water supply to meet plant-water needs. The reviewer’s analysis of hydrologic alterations and water supply/water consumption comparison should be linked to the environmental descriptions provided by the environmental reviews for ESRPs 2.3 and 3.3 to ensure that the environmental factors most likely to be affected by operational hydrologic alterations and plant water consumption are described in sufficient detail to permit subsequent assess- ment of any potential impacts. The reviewer should coordinate the analysis of hydrologic alterations with the analysis prepared by the reviewer for ESRP 4.2.1 because the analyses for many of the hydro- logic