40 where D, is the dose rate due to the present standing stock S.. turn-over time of the lagoon (t) is short compared to T, then: . 4930 = 70.c . -e Se. If the 30 -0.693(T ) Assuming, as described in chapter 5, that D,. = 0.26 mrem/yr, t = 0.5 years, S, = 1.5 Ci and assuming further that all of the 12.6 Ci in the dome is available for leaching, then the extra 30-year dose as a function of effective half-life in the dome is: | | 4D 2» 1.1 ad -0.693(T ) mrem -e. les CS} ca cs} aD The data in section 5.7 are calculated from this expression.