Document: NUREG-1555
Document ID: 17b2caaa-583b-499d-8e3f-6819f84298ba
Document Type: esrp
Title: CHEMICAL 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: 6.6
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Content:
ata are needed on a seasonal basis, and descriptions should be sufficient to characterize seasonal variations throughout an annual cycle. The data provided October 1999 6.6-5 NUREG-1555 should support the environmental descriptions of hydrology, water use, water quality, aquatic ecology, and plant water supply given in ESRP Chapters 2.0 and 3.0. Construction Monitoring A construction monitoring program may be required by the NPDES administrative agency to provide the data necessary to assess water-quality changes resulting from construction of the proposed project. The time frame for sampling each water-quality parameter should be appropriate for the period of expected change and should include preconstruction monitoring when it is necessary to establish a baseline. Preoperational Monitoring If preapplication monitoring data have not provided an adequate water-quality baseline, a preoperational monitoring program may be required by the NPDES administrative agency. Such a program should provide an adequate baseline so that the operational monitoring program can detect such changes with a degree of confidence commensurate with the risks and costs involved. When consistent with construction planning, two or more consecutive years of data collection should be planned, and the program should demonstrate a logical extension of both the preapplication and site preparation and construction monitoring programs. The reviewer should analyze the ability of the proposed program to characterize the water quality at the site and in the vicinity and thus provide a baseline for the identification and measurement of water- quality changes from station operation. Operational Monitoring The applicant’s operational monitoring program identifies changes in water quality resulting from plant operation. Operational monitoring programs update estimates of various effluent treatment systems’ effectiveness and provide real time warnings of any failures in the effluent treatment systems.