Integrated Ground-Water Monitoring Strategy for NRC-Licensed Facilities and Sites: Logic, Strategic Approach and Discussion (NUREG/CR-6948, Volume 1)

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Publication Information

Manuscript Competed: August 2007
Date Published: November 2007

Prepared by:
V. Price, T. Temples, J. Tauxe, R. Hodges, R. Falta

Advanced Environmental Solutions, LLC
407 West Main Street
Lexington, SC 29072

T.J. Nicholson, NRC Project Manager

Prepared for:
Division of Fuel, Engineering and Radiological Research
Office of Nuclear Regulatory Research
U.S. Nuclear Regulatory Commission
Washington, DC 20555-0001

NRC Job Code Y6020

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This document presents a logical framework for assessing what, how, where and when to monitor underground water in order to ensure that a licensed nuclear site or facility is behaving within the expected limits as described by the performance assessment. The Strategy is implemented as an iterative process beginning with analysis of any existing site and facility characterization and monitoring data, any existing conceptual site model (CSM), in this case generally a hydrogeologic model, and any existing risk assessment or PA model. The iterative nature of the Strategy results in a graded approach to development or evaluation of a monitoring program. Through analysis, an initial assessment of what, how, when, and where to monitor to evaluate system performance is made. Performance Indicators include chemicals, hydrogeologic attributes, and other features, events, or processes (FEPs) that may significantly influence contaminant flow and transport. These PIs may be directly measurable in a monitoring program or may be derived from compilations and interpretations of data. The integrated strategy benefits are:

  • Characterization allows development of CSM;

  • CSM allows modeling / simulation;

  • Modeling allows prediction;

  • Monitoring allows refinement;

  • Refinement allows confidence.

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