Te ren 40 where D, is the dose rate dce to the present standing stock S.. turn-over time of the lagoon (t) is short compared to T, then: 4D30 * 22S [If the nae 693 e} Assuming, as described in chapter 5, that BD, = 0.26 mrem/yr, t #40 years, S, = 1.5 Ci and assuming further that all of the 12.6 Ci In dome is available for leaching, then the extra 30-year dose as a function of effective half-life in the dome is: 3 ~0.693(T )] mrem The data in section 5.7 are calculated from this expression.