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Management of Commercially Generated Radioactive Waste - U.S. ...

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Draft pp. 3.1.47-53<br />

Issue<br />

Response<br />

247<br />

GEOLOGIC CONSIDERATIONS<br />

The discussion in this section repeats that <strong>of</strong> Section 3.1.2. (154)<br />

Sections 3.1.1, 3.1.2 and 3.1.3 have been reorganized to eliminate repetition.<br />

Draft pp. 3.1.47-76<br />

Issue<br />

Discussion <strong>of</strong> brine migration is missing; no mention is made that sorption by salt is<br />

different than for other media. (208-NRC)<br />

Response<br />

Mention <strong>of</strong> brine inclusions in salt migrating toward a heat source was added (with<br />

reference) to draft, p. 3.1.9, and the table <strong>of</strong> physical properties comparisons (draft, p.<br />

3.1.14) has "Ion Exchange Capacity" added, with salt given the lowest rating. Sorption is<br />

discussed briefly on draft p. 3.1.5, and listed under "Deficiencies in the Data Base" (draft<br />

p. 3.1.26) as a significant item.<br />

Draft p. 3.1.47<br />

Issue<br />

An additional premise should be added to the effect that certain geologic conditions<br />

will be avoided and others can be coped with through mitigating measures. (154)<br />

Response<br />

The two premises listed are basic to the concept <strong>of</strong> geologic disposal and are the<br />

reasons for considering geologic disposal. They apply equally to all the media discussed.<br />

To distinguish between conditions that would lead to avoidance or to acceptance with<br />

mitigating measures is more specific to each medium (i.e., not as general) and was not<br />

included here.<br />

Draft p. 3.1.47<br />

Issue<br />

Hydrology should also be a prime consideration in geologic site selection. (218-DOI)

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