“contaminated” organic materials (plants and animals), the Cleanup mate- rials available for diffcrentiation (contaminated or noncontaminated) are metal and concrete. These matcrials will collectively be called L< "“debris.“ 3. The radioactivity of aebris can be removable surface con- tamination or fixed (nonremovabiec) contamination either on the surface 1 or Gistributed throuchout, as might result from activation. Cleanup will assume that any alpha radioactivity is present only as removable . YO contamination, beta radiation is the predominant fixed contamination of concrete Gebris, and gamma radiation is the predominant fixed contamination of metallic debris. “— Ky 4. * Debris will be consicered as contaminated and programmed for radiological Cleanup if it gives either: Chen dekh good ur of Bike aL, : , Gta pope (a) to a filter-paper swipe over a 100cm? area, an alpha radiation disintegration rate >20 dpm; Bea SWARL [] be . _ (b) * ——SN \ NO AME PE. an absorbed dose rate >100 yrad/h when measured at a Pee , | . one om distance through not more than \seven ing/cm2 absorbing material; or (c) an exposure rate >15 pR/h at a 30 cm distance. Rye ary ae ekg oe yer :