What does the Remedial Investigation Report say about the safe life expectancy of the IWCS?
A 2001 geophysical survey of the Interim Waste Containment Structure (IWCS) confirmed that there are not any voids or areas of increased water saturation, within the IWCS, which indicates no significant deterioration of the structure. Additionally, the geophysical survey did not identify any significant fractures, faults, or seismic pressure points near the structure that would make the IWCS susceptible to earthquakes. Additionally: • The Corps conducted more in-depth assessments regarding the potential for radionuclides to leach to the upper and lower groundwater-bearing zones through a site-specific, numerical groundwater flow and contaminant transport model. This model was developed to simulate transport over a 10,000- year timeframe. • Corps’ transport simulations indicate that the IWCS will adequately mitigate off-site contaminant migration for 200 years (until 2186), provided it is maintained to prevent erosion of the clay cap. • A study by the National Academy of Sciences commis
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- What does the Remedial Investigation Report say about the safe life expectancy of the IWCS?
