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Response<br />

209<br />

GEOLOGIC CONSIDERATIONS<br />

The site selection process takes into account parameters such as the hydraulic conduc-<br />

tivity <strong>of</strong> the rock mass. A repository would not likely be sited in highly permeable rock<br />

requiring dewatering.<br />

Draft p. 1.13<br />

Issue<br />

In addition to salt's excellent thermal properties, the favorability <strong>of</strong> salt's lower<br />

variation and fewer discontinuities should be mentioned. (154)<br />

Response<br />

It is questionable that salt deposits as a rock group show lower variation than say<br />

masses <strong>of</strong> granite intrusions. The reader should refer to Table B.2.1 <strong>of</strong> the final<br />

Statement.<br />

Draft p. 1.13<br />

Issue<br />

One commenter found no section in the draft Statement that deals specifically with site<br />

selection. The commenter felt that the Statement should note that considerable work has<br />

already been done at stages one and two and also some at stage three. (154)<br />

Response<br />

See draft pp. 3.1.17 and 3.1.28 under The Site Selection Process. This draft section<br />

discusses the process <strong>of</strong> site selection from the standpoint <strong>of</strong> four rock types, their prop-<br />

erties and their occurrence. The intent is not to select a site but to describe a method<br />

for approaching the problem and to point out how the method would apply as the process leads<br />

to smaller areas and more detailed investigation.<br />

process.<br />

Also, Section 2.3.1.2 <strong>of</strong> this final Statement discusses DOE's proposed site selection<br />

Draft p. 1.13<br />

Issue<br />

In order to assess fracturing and permeability in granitic rocks, field measurements<br />

are required. Further, the commenter suggested the difficulty <strong>of</strong> properly interpreting geo-<br />

physical data gathered on granitic rocks in place. (190)

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