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

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393<br />

ALTERNATIVE DISPOSAL CONCEPTS<br />

is not possible. Section 6.2 <strong>of</strong> the final Statement addresses the issue <strong>of</strong> technical uncer-<br />

tainity in its presentation <strong>of</strong> comparative assessment <strong>of</strong> alternatives.<br />

Draft p. 3.8.24<br />

Issue<br />

Has reverse well injection in salt beds been considered? Salt is not mentioned among<br />

media under consideration. It has been found to be amenable to bedding plane fracture.<br />

(218-DOI)<br />

Response<br />

Reverse well injection in salt has not been considered since the methods generally<br />

involve use <strong>of</strong> water which is normally considered incompatible with a salt host medium to<br />

be used for waste disposal.<br />

Draft p. 3.8.25<br />

Issue<br />

Under Data Needs the statement<br />

"Data Needs. Present geological knowledge is adequate for generic studies and identi-<br />

fication <strong>of</strong> a number <strong>of</strong> candidate sites. Site-specific studies will require more de-<br />

tailed investigations, in particular the stratigraphy and lithology <strong>of</strong> the disposal<br />

and containing formation, geochemistry <strong>of</strong> strata and fluids, and structural features."<br />

is not consistent with similar discussions in Section 3.1. (154)<br />

Response<br />

Section 6.1.6.3 <strong>of</strong> the final Statement discusses the status <strong>of</strong> technical development<br />

and R&D needs for the well injection concept. Under the heading Development <strong>of</strong> Criteria<br />

for and Categorization <strong>of</strong> Siting Opportunities present geologic knowledge is judged suit-<br />

able only for preconceptual generic studies and identificaion <strong>of</strong> candidate site (emphasis<br />

added). .<br />

Draft p. 3.8.29<br />

Issue<br />

In view <strong>of</strong> grout injection experience at ORNL and liquid chemical injection at other<br />

U. S. Government locations, the statement made in paragraph 4 concerning the lack <strong>of</strong> ade-<br />

quate monitoring data is not appropriate. (124)

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