ISU screening values for soil
  Analytical result   D and D SV*   SV
Radionuclide uCi/g fraction pCi/g uCi/g fraction**
Fe55 6.90×10-6 3.56×10-1 9470 9 47×10-3 7.29×10-4
Co60 2.00×10-6 1.03×10-1 3.64 3 64×10-6 5.49×10-1
Cs134 9.80×10-8 5.06×10-3 1.75 1.75×10-6 5.60×10-2
Eu152 9.89×10-6 5.10×10-1 8.65 8.65×10-6 1.14×100
Eu154 4.93×10-7 2.54×10-2 8.01 8.01×10-6 6.15×10-2
Total 1.94×10-5 1.00×100     1.81×100
 *SV = Screening Value; corresponds to 25 mrem/yr. ** DE&S E-Lab results/SV
Maximum total concentration in soil 10.7 pCi/g Maximum detectable gamma concentration in soil 6.89 pCi/g