TABLE 13 



Plymouth, Mass., Area: Water and Sediment Radiochemistry 

 (Radionuclides in disintegrations per minute per 100 kg water, or per kg dry sediment) 



Part A - Water Analyses: 



Collection Date 90 137 238n 239,240n,, 238^ ,239p,, 



Site:* 1976 Depth - cm Sr Cs Pu Pu Pu/ Pu 



1+ Oct. surface 36.2+0.6 32.0±0.5 N.M. 0.15±0.06 



Part B - Sediment Analyses : 



1 " Oct. 20 0-3 Grab 66.1±1.5 0.29±0.04 8.2±0.3 0.035 



2 Oct. 19 0-4 Core 157±3 2.6 ±0.2 61.5±1.7 0.042 

 4 Oct. 19 0-6 from Anchor 59.7+1.3 0.68±0.07 21.3+0.6 0.032 



Cape Cod Bay Aug. 0-1 Core 187±6 2.5+0.3 101±3 0.034 



0.037 

 0.038 

 0.043 

 0.036 

 0.034 

 0.032 



Notes: * = For locations, see Figure 3. 



+ = Water directly from Pilgrim I outfall, 

 X = Sediment from plant intake basin. 



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