shelf. Because of the possibility of accidental recovery, no solid wastes 

 should be introduced into this environment. The results of the evaluation 

 for the liquid effluent are summarized in the following table, which gives 

 the maximum permissible total activity for a single discharge as a func- 

 tion of selected values of the ppc value for the environment and the max- 

 imum permissible number of discharges (N) per month. 



ppc value Permissible Activity in a Single Discharge 



for the For 1 discharge For 30 discharges 



environment per month per month 



(nc/ml) (curies) (curies) 



10-9 5.2x10"^ 5.3x10-2 



10-^ 5.2 5.3 X 10-^ 



10"^ 52 5.3 



The weighted mean ppc value for the coastal area, for the primary 

 coolant of the SAVANNAH, is 2 x lO"^ ^c/ml and the predicted gross ac- 

 tivity which would be contained in the warm-up expansion volume of some 

 2200 gallons is 6.8 x 10"^ curies. Thus, considering that it would be un- 

 likely that more than 30 nuclear -powered ships per nnonth would pass, out- 

 bound, through any such 10 -mile wide stretch of the coastal area, this 

 environment appears suitable to receive the low level liquid wastes which 

 would be stored in tanks as a result of restrictions placed on the release 

 of such wastes in harbors. 



This zone does not appear suitable, however, to receive the 1 to 

 400 curie amounts of activity which might be released with the spent ion 

 exchange resins. 



Our recommendations pertaining to the coastal area, between 2 and 

 12 miles offshore (Zone 2), follow: 



Recommendation 4: Spent ion exchange resins should not be discharged 

 from nuclear -powered ships into the waters of the coastal area, between 

 2 and 12 miles offshore. Except under very exceptional circumstances 

 there should be no discharge of packaged solid wastes from nuclear - 

 powered ships into these waters, and any such exceptional discharge 

 should conform to recommendations contained in the National Academy 

 of Science's report "Radioactive Waste Disposal in the Atlantic and Gulf 

 Coast" (NAS-NRC Pub. 655, 1959). 



XIV 



