Integrated Monitoring Plan for the Hanford Groundwater Monitoring Project Page: 4 of 74
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Groundwater is monitored at the Hanford Site to fulfill a variety of state and federal regulations,
including the Atomic Energy Act of 1954; the Resource Conservation and Recovery Act of 1976; the
Comprehensive Environmental Response, Compensation, and Liability Act of 1980; and Washington
Administrative Code. Separate monitoring plans are prepared for various requirements, but sampling is
coordinated and data are shared among users to avoid duplication of effort. The U.S. Department of
Energy manages these activities through the Hanford Groundwater Monitoring Project.
This document is an integrated monitoring plan for the groundwater project. It documents well and
constituent lists for monitoring required by the Atomic Energy Act of 1954 and its implementing orders;
includes other, established monitoring plans by reference; and appends a master well/constituent/
frequency matrix for the entire site.
The objectives of monitoring fall into three general categories: plume and trend tracking, treatment/
storage/disposal unit monitoring, and remediation performance monitoring. Criteria for selecting Atomic
Energy Act of 1954 monitoring networks include locations of wells in relation to known plumes or
contaminant sources, well depth and construction, historical data, proximity to the Columbia River, water
supplies, or other areas of special interest, and well use for other programs. Constituent lists were chosen
based on known plumes and waste histories, historical groundwater data, and, in some cases, statistical
modeling. Sampling frequencies were based on regulatory requirements, variability of historical data, and
proximity to key areas. For sitewide plumes, most wells are sampled every 3 years. Wells monitoring
specific waste sites or in areas of high variability will be sampled more frequently.
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Hartman, Mary J.; Dresel, P Evan; Lindberg, Jonathan W.; Newcomer, Darrell R. & Thornton, Edward C. Integrated Monitoring Plan for the Hanford Groundwater Monitoring Project, report, October 18, 2000; Richland, Washington. (digital.library.unt.edu/ark:/67531/metadc932477/m1/4/: accessed February 21, 2019), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.