90, 



It is concluded that these general principles should guide the 

 selection of methods of disposal: 



1. That the liquids containing the nuclear waste, shall have 

 a greater specific gravity -when introduced into the res- 

 ervoir than the liquids already present in the reservoir; 



2. That the liquids shall be stored underground preferably 

 where they will remain under essentially static conditions; 



3. That the introduction of the fluids into the bottom of struc- 

 tural basins is one means of satisfying effectively this 

 condition; 



4. That adequate monitoring of the distribution of nuclear 

 waste within the reservoir be provided by appropriate 

 observation wells, which could also serve as sources of 

 siluent; 



5. That, prior to the introduction of nuclear waste liquids 

 into the reservoir, the problems of heat dissipation, 

 clogging of reservoir space, and chemical reaction with 

 the reservoir rock and fluids be evaluated. 



