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

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Response<br />

298<br />

REFERENCE ENVIRONMENTS<br />

The reference environment was developed principally for above ground environmental<br />

analyses such as population dose which requires a description <strong>of</strong> demography and was not<br />

intended to be considered <strong>of</strong> as.a candidate site.<br />

Draft Appendix F<br />

Issue<br />

If the maximum flood on record was 3 meters above the normal river stage, and the one<br />

in a thousand year flood would be expected to be 5 meters above normal river stage, under<br />

what conditions would the "maximum probable flood" which is 10 meters above normal river<br />

stage be expected. Is this a once in a million year flood? (113-EPA)<br />

Response<br />

The probable maximum flood is the worst case flood. No time is specified.<br />

Draft Appendix F<br />

Issue<br />

There is a short paragraph on ground water, but nothing as to the nature <strong>of</strong> the<br />

aquifer--permeability, hydraulic gradients, or retardation factors. This should be<br />

included. (113-EPA)<br />

Response<br />

This type <strong>of</strong> information was not available in sufficient detail to be useful. More-<br />

over near surface features were considered adequate for the use to which the information<br />

was put.<br />

Draft p. F.3<br />

Issue<br />

The hydrology <strong>of</strong> the hypothetical site is presented with no explanation or discussion<br />

<strong>of</strong> its appropriateness for general sites. No discussion <strong>of</strong> other hydrologies is given.<br />

Considering the great length <strong>of</strong> discussion that is given throughout the document to effects<br />

<strong>of</strong> comparatively small changes in the characteristics <strong>of</strong> the waste, an apparent lack <strong>of</strong><br />

appreciation <strong>of</strong> the effects <strong>of</strong> the sites hydrologic characteristics is manifested by this<br />

treatment. (208-NRC)

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