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Environmental Impact Statement - radioactive monticello

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

0 Water Use and Quality-Surface Water<br />

In Chapter 4 of this SEIS the NRC staff concluded that impacts of continued plant operation on<br />

surface water use and quality would be SMALL. When the plant stops operating there will be<br />

an immediate reduction in the consumptive use of water because of reduction in cooling water<br />

flow and in the amount of heat rejected to the Mississippi River. Therefore, the staff concludes<br />

that the impacts on surface water use and quality from plant shutdown would be SMALL.<br />

* Water Use and Quality-Groundwater<br />

In Chapter 4, the staff concluded that impacts of continued plant groundwater use on<br />

groundwater availability and quality would be SMALL. When the plant stops operating, there<br />

will be an immediate reduction in use of groundwater for makeup. In addition, there will be a<br />

gradual reduction in groundwater use for potable water as the plant staff decreases. Therefore,<br />

the staff concludes that groundwater use and quality impacts from shutdown of the plant would<br />

be SMALL.<br />

• Air Quality<br />

In Chapter 4, the staff found the impacts of continued plant operation on air quality would likely<br />

be SMALL. When the plant stops operating, there will be a reduction in emissions from<br />

activities related to plant operation, such as use of diesel generators and workers'<br />

transportation. Therefore, the staff concludes thatthe impact on air quality from shutdown of<br />

the plant would be SMALL.<br />

* Waste<br />

The impacts of waste generated by continued plant operation are discussed in Chapter 6. The<br />

impacts of low-level and mixed waste from plant operation are characterized as SMALL. When<br />

the plant stops operating, the plant will stop generating high-level waste, and generation of<br />

low-level and mixed waste associated with plant operation and maintenance will be reduced.<br />

Therefore, the staff concludes that the impact of waste generated after shutdown of the plant<br />

would be SMALL.<br />

• Human Health<br />

In Chapter 4 of this SEIS the NRC staff concluded that the impacts of continued plant operation<br />

on human health would be SMALL. After the cessation of operations the amount of <strong>radioactive</strong><br />

material released to the environment in gaseous and liquid forms will be reduced. Therefore,<br />

the staff concludes that the impact of shutdown of the plant on human health would be SMALL.<br />

In addition, the variety of potential accidents at the plant will be reduced to a limited set<br />

associated with shutdown events and fuel handling. In Chapter 5 of this SEIS the NRC staff<br />

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

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