"contaminated" organic materiais (plants and animals), the Cleanup mate- are metal and conerete. 3. Ou ct rials available for Gifficrentication: (contaminated or noncontaminatcd) These matcrials will collectively be callcd The radioactivity of cebris can be removable surface con- tamination or fixed (nonremovabic) or Gistributed throuchout, contamination either on the surface as mignt resvit from ectivation. Cleanun na vcacloactivity is present oniy as removable @ contamination, beta radiation is the predominant fixed contamination of L concrete Gebris, . anc gamma radiaéticn is the 2predominant fixcd contaminaoa tion of metallic debris. &. oo - Debris will be consiécred as contaminated and programmed or Yacdiclogical Cleanuyn if it gives either: (a) amo * » + to a filter-paper swipe over a 100cm* area, an alpna radiation disintegration rate >20 dpn; "> (b) an absorbed cose rate »100 urad/h when measured at a one cm distance through not more than seven mg/cm absorbing material; or (c) an exposure rete >15 uR/h at a 30 cm distance. E £ 6 @ KF &@ i Bw :! meme ea ake a jl