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

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3-41 3-42<br />

Comment Comment<br />

Number<br />

Number<br />

granite, shale (Gas Buggy), and salt. This experience bears directly upon .k.8 . 3.1.9<br />

the proposed long-term storage <strong>of</strong> vitrified high level waste, and should The statement, "Joints can be ... " is too vague. Are joints usually,<br />

be discussed, <strong>of</strong>ten, or seldom anhydrite-filled, near vertical, unopen, moderately<br />

3.k.2 P. 13<br />

spaced, and generally extensive?<br />

The need for additional in situ testing to obtain site specific information 3k9 p 3 11<br />

should be stressed in the GEIS. For example, acceptability <strong>of</strong> a shale as Does "hard" refer to hardness (as in scratch test) or strength? Geologic<br />

the host media at one location does not imply that a shale at another terms such as strength and hardness should be used in accordance with<br />

location is necessarily acceptable since nonlithologic parameters such as<br />

tectonic setting, in situ stresses, hydrology, and other variables are<br />

their standard definitions.<br />

undoubtedly different. 3.k.0 p. 3.1.21<br />

References for the statement "...shaking ...due ...to earthquakes is not<br />

3.k.3 p. 1.12 expected to have serious effects on the repository at depth..." should be<br />

Why are salt, basalt, granite and shale considered to be representative <strong>of</strong> provided<br />

all geologic media? Some explanation should be given.<br />

3.k.ll p. 3.1.23<br />

3.k.4 p. 3.1.8 Groundwater may constitute the major potable water supply <strong>of</strong> many western<br />

3.k.5 p. 3.1.8<br />

3.k.6 3.1.8<br />

3.k.7 p. 3.1.9<br />

Rock structure and texture are not interchangable terms. A glossary <strong>of</strong> states. This aspect <strong>of</strong> groundwater importance should be addressed.<br />

geologic terms used in the GEIS, such as structure, texture, lithology,<br />

bedding, and joint may eliminate confusion concerning the usage <strong>of</strong> standard<br />

terms and should be provided.<br />

The confining earth pressures whose release cause joints should be charac-<br />

terized. For example, glacial retreat and thermal contraction should be<br />

named as causes <strong>of</strong> jointing in rock.<br />

Salt domes may deform overlying strata without penetrating them. Therefore,<br />

"deform" should be substituted for "penetrate" in the 6th sentence.<br />

The statement, "...the water incorporated in them (salt beds) was trapped<br />

when the beds were formed and does not migrate," is erroneous. Fluid<br />

inclusions in salt migrate along thermal gradients.

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