23.04.2013 Views

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

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

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

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

249<br />

GEOLOGIC CONSIDERATIONS<br />

representative quantitative modeling necessary for design and decrease confidence that all<br />

conditions are known." (154)<br />

Response<br />

The text has been changed (see Section B.2 <strong>of</strong> the final Statement).<br />

Draft p. 3.1.48<br />

Issue<br />

One commenter indicated that the first statement under ground-water implies that a<br />

repository can be sited in conjunction with a useful ground-water source and not affect its<br />

quality. (113-EPA)<br />

Response<br />

The text has been changed. The intent <strong>of</strong> the statement is not clear from the wording.<br />

The central idea in discussing ground water as resource is that it must be preserved.<br />

Draft pp. 3.1.48, 49, 64<br />

Issue<br />

Table 3.1.49 <strong>of</strong> the draft states that there could be an unacceptable 50 year body dose<br />

as a result <strong>of</strong> ground-water transport <strong>of</strong> radionuclides by the year 2050; pp. 3.1.48 and<br />

3.1.49 state that insignificant flow rates over the short term may be a problem over the<br />

long term. (208-NRC)<br />

Response<br />

Table 3.1.49 <strong>of</strong> the draft presents the results <strong>of</strong> a "faulting and flooding" accident<br />

scenario that "assumes an improbable combination <strong>of</strong> events....." (p. draft 3.1.148); this is<br />

only true if all the given assumptions are made--a fault breaches the repository, 100 cubic<br />

ft/sec <strong>of</strong> water flows into the repository, past the waste, and enters man's environment.<br />

The other statements refer to an intact repository and not to the special "accident" scenario.<br />

Draft p. 3.1.49<br />

Issue<br />

Several letters noted that the statement--"Flow rates and velocities <strong>of</strong> groundwater<br />

that are insignificant over a 50 year period will have to be considered over hundreds <strong>of</strong><br />

thousands <strong>of</strong> years." does not make sense over the long-term. (113-EPA, 154)

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!