Document: NUREG-1555
Document ID: 7624f829-e560-45db-bb97-cc869890a892
Document Type: esrp
Title: HYDROLOGICAL MONITORING
Source: NUREG-1555
Source URL: https://www.nrc.gov/reading-rm/doc-collections/nuregs/staff/sr1555/initial/
Revision Date: 2007-10
Chapter: 6
Section ID: 6.3
CFR Part: 
CFR Title: 

Content:
ly are interdependent, changes in water quality must be considered simultaneously with changes in water supply. In Jefferson County PUD #1 vs. Department of Ecology (U.S. Supreme Court Case), the U.S. Supreme Court granted the States additional authority to limit hydrological alterations beyond the States’ role in regulating water rights. NUREG-1555 6.3-4 October 1999 ` Regulatory Guide 4.2, Rev. 2, Preparation of Environmental Reports for Nuclear Power Stations (NRC 1976), contains guidance on the format and content of Environmental Reports including hydrology, water-use, and water-quality issues. The regulatory position necessary to meet the objective identified above requires documentation of consultations with National Pollution Discharge Elimination System (NPDES) administrative authority, and/or water rights regulatory authority. Technical Rationale The technical rationale for evaluating the applicant’s hydrological monitoring program is discussed in the following paragraphs: A detailed and thorough description of the hydrological monitoring is essential for the evaluation of potential impacts to the environment that may result from plant construction and operation. Effluents discharged to navigable streams are governed by the CWA, 40 CFR 122, 40 CFR 423, and State water-quality standards. A NPDES permit to discharge effluents to navigable streams pursuant to Section 402 of CWA may be required for a nuclear power station to operate in compliance with the Act, but it is not a prerequisite to an NRC license. Adequate monitoring (baseline and opera- tional) is generally a prerequisite for obtaining or renewing an NPDES permit. III. REVIEW PROCEDURES The reviewer should consider the following separate but related aspects of the applicant’s hydrological monitoring program: ` Preapplication Monitoring. The program of field monitoring and data collection is used to support the applicant’s baseline hydrological descriptions. ` Construction Monitoring. The