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Environmental Impact Statement - radioactive monticello

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<strong>Environmental</strong> <strong>Impact</strong>s of Operation<br />

they are related to plant design features or site characteristics not found on the Monticello site<br />

are listed in Appendix F.<br />

4.1 Cooling System<br />

Category 1 issues in Table B-1 of 10 CFR Part 51, Subpart A, Appendix B, that are applicable<br />

to the Monticello cooling system operation during the renewal term are listed in Table 4-1.<br />

Nuclear Management Company (NMC) stated in its <strong>Environmental</strong> Report (ER) (NMC 2005a)<br />

that it is not aware of any new and significant information associated with the renewal of the<br />

I Monticello operating license (OL) that would warrant additional, plant-specific analysis of the<br />

remaining applicable Category 1 issues. The staff has not identified any new and significant<br />

information during its independent review of the NMC ER, the staff's site visit, the scoping<br />

I process, its evaluation of other available information, or public comments on the draft<br />

I Supplemental <strong>Environmental</strong> <strong>Impact</strong> <strong>Statement</strong> (SEIS). Therefore, the staff concludes that<br />

there are no impacts related to these issues beyond those discussed in the GELS. For all of<br />

these issues, the staff concluded in the GElS that the impacts are SMALL, and additional plantspecific<br />

mitigation measures are not likelyto be sufficiently beneficial to be warranted.<br />

A brief description of the staff's review and the GElS conclusions, as codified in Table B-i, for<br />

each of these issues follows:<br />

Altered current patterns at intake and discharge structures. Based on information in the<br />

GELS, the Commission found that<br />

Altered current patterns have not been found to be a problem at operating<br />

nuclear power plants and are not expected to be a problem during the license<br />

renewal term.<br />

The staff has not identified any new and significant information during the staff's<br />

I independent review of the NMC ER, the scoping process, the staff's site visit, its<br />

evaluation of other available information, or public comments on the draft SEIS.<br />

Therefore, the staff concludes that there are no impacts of altered current patterns at<br />

intake and discharge structures during the renewal term beyond those discussed in the<br />

GELS.<br />

Temperature effects on sediment transport capacity. Based on information in the GELS, the<br />

Commission found that<br />

These effects have not been found to be a problem at operating nuclear power<br />

plants and are not expected to be a problem during the license renewal term.<br />

NUREG-1 437, Supplement 26 4-2 August 2006 1

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