year net external effective dose equivalent was estimated to be 1.7xl10 “ 2 Sv (1.7
rem) at Rongelap and 4.)x10 ©
2
Sv (4.1 rem) at Utirik.
The external exposure
rate is expected to decline to nearly natural background levels by the year
2072.
The ratio of internal committed effective dose equivalent to fifty-years
of net external dose equivalent was 1.1 for Utirik and 1.5 for Rongelap.
The in-
ternal portion of these dose equivalent ratios does not include the contribution
from 23954 due to the uncertainty in Pu bioassay data.
19