observation. The larger distance is preferable for preliminary survey; the smaller distance is preferable for detailed survey of ma‘étnum contamination areas, J.2.1 ~ ~ ‘ Personnel and Clothing §kin: Complete decontamination by bathing is to be attempted. If a reading in excess of 1 mr/hr is obtained after repeated washings, the decontamination supervisor will be consulted for appropriate advice. Underclothing and Body-contact Equipment (Interior Linings of Boots and Respirators): The permissible limit is 2 mr/hr. Outer Clothing and Body-proximity Equipment (Outer Surface of Boots and Protective Clothing): The permissible limit is 7 mr/hr. 3.2.2 . a Aircraft, Vehicles, and Small Boats The permissibie limits are as follows. ialerior surfaces, 2 mr/hr; exterior surfaces, T mr/hr; and distant exterior surfaces, 20 mr/hr. 3.2.3 Air and Water The following continuous levels of radioisotope content in air and water are generally considered to be safe: Air Water Alpha emitter 10°? pe/ce 107° pe/ee 5X 10°" ne/ce 107' pe/cc eh reyBES fs oe ae aea sheer. . Beta or gamma emitter 95 ‘a oe teenie le FETS °