2. Activity Ingested with DrinkingWater In the weeks preceding the BRAVO contamination, water from cis- terns was rationed to one pint cup per person each day (Sh57). Assuming this wording implies US liquid measure, then 470 om? of water per person per day was distributed. ted (Sh57). This water was used to make tea and coffee and was directly injesNaidu observed an average intake of about 1000 em? of coconut water per day for adults, 800 em? for adolescents and 500 om” for 1 to 3 year old children (Na80). Marshallese also consumed coconut tree sap, about 700 com? per day for adults, 600 em? for adolescents and 400 em? for 1-3 year old children “(Na80). Not counting the water intake from ingesting food and by oxidation of food, a 70 Kg adult would ingest about 2000 cm? per day of fluids and a 10 year old child 1400 cm per day in order to balance normal water losses (ICRP74). Therefore it was likely each person drank his or her daily cistern water ration of 470 cm? especially since ambient temperatures were greater than 25°C (ICRP74) which would increase body water losses. People reported drinking this water re- gardless of the concern expressed about the taste and color ($h57). On the basis of one pint cup intake of cistern water per day, 150 com of water was assumed to be taken with each meal. At Rongelap Island, this was assumed to occur at 5.5 (lunch), 12 (dinner), 24 (breakfast), 30 (lunch), 38 (dinner) and 50 (breakfast) hours post detonation. No literature was found to indicate rationing was necessary at Sifo or Utirik Islands. Based on fluid bal- ance studies (Na80, ICRP74) it was assumed one pint cup per person per day was the cistern water intake at these islands as well. The 150 om? intake of water with meals was assumed at Sifo Island, also at the same meal times assumed for Rongelap Island and at 57 (lunch) hours post detonation as well. The 150 cm? mealtime water intake was assumed at Utirik Island to occur at at 24, 31, 38, 26