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U.S. Department of Energy
Office of Scientific and Technical Information

Annual report for RCRA groundwater monitoring projects at Hanford Site facilities for 1990

Technical Report ·
OSTI ID:5964274

This report documents the annual evaluation of eighteen Resource Conservation and Recovery Act of 1976 (RCRA) groundwater monitoring projects and one nonhazardous waste facility at the Hanford Site. The RCRA projects are monitored under three programs: (1) a background monitoring program; (2) an indicator evaluation program; and (3) a groundwater quality assessment program. The background monitoring program and the indicator evaluation program are described as two phases of the detection level monitoring program. Briefly stated, when a groundwater monitoring system has been installed, a background monitoring program begins. Samples and water levels from upgradient monitoring well(s) must be obtained and analyzed quarterly for one year to obtain background data on the quality of the groundwater. After one year, the indicator evaluation program commences, and groundwater samples and water levels must be taken semiannually. Data obtained through the indicator evaluation program are compared with background data; if a significant change over background has occurred, a groundwater quality assessment plan must be implemented. The Solid Waste Landfill (SWL) is included in this report because of uncertainty in the final regulatory authority for the site and because of the interest of the Washington State Department of Ecology (Ecology) in all aspects of Hanford Site operations. 193 refs., 114 figs., 44 tabs.

Research Organization:
USDOE Richland Operations Office, WA (USA); Westinghouse Hanford Co., Richland, WA (USA)
Sponsoring Organization:
DOE; USDOE, Washington, DC (USA)
DOE Contract Number:
AC06-87RL10930
OSTI ID:
5964274
Report Number(s):
DOE/RL-91-03; ON: DE91010033
Country of Publication:
United States
Language:
English