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Environmental Impact Statement - radioactive monticello

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

are no impacts of gas supersaturation during the renewal term beyond those discussed in the<br />

GELS.<br />

Low dissolved oxygen in the discharge. Based on information in the GELS, the Commission<br />

found that<br />

Low dissolved oxygen has been a concern at one nuclear power plant with a<br />

once-through cooling system but has been effectively mitigated. It has not been<br />

found to be a problem at operating nuclear power plants with cooling towers or<br />

cooling ponds and is not expected to be a problem during the license renewal<br />

term.<br />

The staff has not identified any new and significant information during its independent review of<br />

I the NMC ER, the staff's site visit, the scoping process, its evaluation of other available<br />

information, or public comments on the draft SEIS. Therefore, the staff concludes that there<br />

are no impacts of low dissolved oxygen during the renewal term beyond those discussed'in the<br />

GELS.<br />

* Losses from predation, parasitism, and disease among organisms exposed to sublethal<br />

stresses. Based on information in the GELS, the Commission found that<br />

These types of losses have not been found to be a problem at operating nuclear<br />

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

term.<br />

The staff has not identified any new and significant information during its independent review of<br />

the NMC ER, the staff's site visit, the scoping process, its evaluation of other available<br />

information, or public comments on the draft SEIS. Therefore, the staff concludes that there<br />

are no impacts of losses from predation, parasitism, and disease among organisms exposed to<br />

sublethal stresses during the renewal term beyond those discussed in the GELS.<br />

* Stimulation of nuisance organisms. Based on information in the GELS, the Commission<br />

found that<br />

Stimulation of nuisance organisms has been satisfactorily mitigated at the single<br />

nuclear power plant with a once-through cooling system where previously it was<br />

a problem. It has not been found to be a problem at operating nuclear power<br />

plants with cooling towers or cooling ponds and is not expected to be a problem<br />

during the license renewal term.<br />

The staff has not identified any new and significant information during its independent review of<br />

the NMC ER, the staff's site visit, the scoping process, its evaluation of other available<br />

information, or public comments on the draft SEIS. Therefore, the staff concludes that there<br />

NUREG-1 437, Supplement 26 4-8 August 2006 1

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