culate the estimated cesium that came from the Nevada Test Site, we can go back to our standard source term calculations and we can, indeed, calculate in a reasonable way the short-lived radionuclides that came with the cesium that were responsible for the dose, and, again, just to emphasize, it's the short-lived radionuclides that are responsible for the dose and not the cesium. The cesium is our track of what's still there and we can measure with contemporary measurements. Once we know Number 2, we can then cal- culate Numbers 3 and 4 with our standard methodologies. "The next viewgraph (LRA-43) indicates the two methods that EML has 10 come up with and successfully demonstrated in Utah. 11 basis of the current measurements, the total cesium that's in the soil now; 12 and if we have a reasonable idea of when it got there, we can, of course, 13 calculate backward how much was there originally. 14 that global cesium primarily comes down with rainfall and that if we do 15 know 16 equation that EML has developed to estimate the global; and then the cesium 17 that 18 global. 19 deposition 20 -239. 21 the rainfall came from at Nevada a particular is location, simply the If we know, on the The first method assumes we difference can use between a regression the total and The other method is based upon current measurements of plutonium as well as the cesium-137 and the ratio of plutonium-240 to The next viewgraph (LRA-44) is an indication of why that ratio should 22 be different for global fallout as opposed to that that came from the 23 Nevada Test Site, 24 the bombardment on uranium-238. 25 the more plutonium-239 is created from uranium; and at the same time if you 26 have created plutonium-239, you leave it in the reactor, and you eventually 27 build up levels of plutonium-240 by two different methodologies. 28 of plutonium-240 jis a reflection of the neutron flux that the plutonium has and, basically, plutonium-239 is made in reactors with The longer you leave it in the reactor, 190 The level