Postclosure suitability criteria.

CFR · 2024-01-01 · US · Title 10

(a) DOE will evaluate the postclosure suitability of a geologic repository at the Yucca Mountain site through suitability criteria that reflect both the processes and the models used to simulate those processes that are important to the total system performance of the geologic repository. The applicable criteria are: (1) Site characteristics, which include: (i) Geologic properties of the site—for example, stratigraphy, rock type and physical properties, and structural characteristics; (ii) Hydrologic properties of the site—for example, porosity, permeability,moisture content, saturation, and potentiometric characteristics; (iii) Geophysical properties of the site—for example, densities, velocities and water contents, as measured or deduced from geophysical logs; and (iv) Geochemical properties of the site—for example, precipitation, dissolution characteristics, and sorption properties of mineral and rock surfaces. (2) Unsaturated zone flow characteristics, which include: (i) Climate—for example, precipitation and postulated future climatic conditions; (ii) Infiltration—for example, precipitation entering the mountain in excess of water returned to the atmosphere by evaporation and plant transpiration; (iii) Unsaturated zone flux—for example, water movement through the pore spaces, or flowing along fractures or through perched water zones above the repository; (iv) Seepage—for example, water dripping into the underground repository openings from the surrounding rock. (3) Near

official document · source cfr-2024 · id 10:§ 963.17