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

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Response<br />

Jbb<br />

ALTERNATIVE DISPOSAL CONCEPTS<br />

No benefit is claimed from additional deposition after canister emplacement. For the<br />

total area needed on the ocean floor, see Emplacement, Section 6.1.4.2.b <strong>of</strong> the final<br />

Statement.<br />

Draft p. 3.6.2<br />

Issue -<br />

Section 3.6.1 discussed advantages and disadvantages. Suggest adding consideration <strong>of</strong><br />

benefits <strong>of</strong> the low temperature and large heat sink resources automatically a part <strong>of</strong> the<br />

subseabed environment. (124)<br />

Response<br />

The benefits <strong>of</strong> the low temperatures and the large heat-sink capabilities <strong>of</strong> the ocean<br />

are being considered. The relatively small distance from the canister to the heat sink is<br />

considered an advantage.<br />

Draft p. 3.6.3<br />

Issue<br />

Two--MPG1 and MPG2--are named but do not seem to come up again in the discussion. A<br />

map showing the areas, or at least listing the coordinates, would be a help. (124)<br />

Two study areas were identified as having been chosen in the central North Pacific.<br />

Where are these study areas located? (Locate on a map.) (208-NRC)<br />

Response<br />

MPG areas 1 and 2 are in essentially the same location, at about 30 0 N, 158 0 W.<br />

Draft p. 3.6.3<br />

Issue<br />

The Statement--"This region (the continental margin) is therefore unsuitable for con-<br />

sideration as a possible waste disposal site."--is too final for such a large region and<br />

cannot be justified without detailed .discussion. A much more reasonable and specific state-<br />

ment is that made for fracture zones in the mid-ocean ridge: "On the basis <strong>of</strong> present know-<br />

ledge, therefore, the fracture zones are not probable candidates as study sites."<br />

Similarly the statement, "The abyssal plains . . . are therefore unacceptable for fur-<br />

ther consideration." should be modified. (208-NRC)

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