2. ‘ . The protective clothing prescribed for Pu operations may range from shoe covers and a surgical mask to a full compliment of shoe covers, coveralls, gloves, head covers and facepieces with either filters or air lines. Although it is proper to don adequate protective clothing, there are numerous reasons for not overdressing. For example, full suiting may be intorerable when worn for extended periods in the warm, humid climate indigenous to Enewetak. The "protection" provided by the clothes could in fact cause harm by leading to heat injuries. Thus, there is an incentive to wear just what is necessary and no more. The proper and minimum clothiag however, will only be determined after an - evaluation of on-site conditions against permissible ccntamination ie e epe oe Behl limits (See Enclosure 4). .3. The local conditions will be determined by analysis of lowvolume (about 2 cubic feet per minute flow rate) air samplers operating in the vicinity of each site which might have resuspendable Pu-contaminated soil at concentrations exceeding 40 PCi/s. The air samplers will be similar to the "Gelman Vacuum Pump Samplers" described in Reference 11 and used at the Nevada Test Site. The air filters will be collected at the end of each work day and counted by alpha proportional counting. If readings indicate high air concentrations, the filters will be collected on a more frequent basis. A representative number_of air filters will be forwarded to the USAF/MCL for more detailed radiochemical analysis. 4. With perhaps the exception of certain areas on Runit (Yvonne), no surface locations at Enwetak Atoll have a sufficiently high Pu concentration to pose a hazard to persons merely walking on them; 1.e., ordinary "foot traffic" is assumed to not -reate any resuspension problems and accordingly it requires no protective measures. Runit is currently quarantined and any persons who walkthere are required to wearSurgical masks and observe other radiological safety precautions. The quarantine will continuein in force, or be made more stringent as appropriate, untilRunit “is ~ certifiedasclean, ot og oe tm 5. Operations which are likely tostir up dust however, such as soil excavation, loading and disposal, couldpose problems. Air sampling will be done before and during these operations to establish appropriate protective clothing requirements. Further, since any resuspended Pu might be spread downwind from these operations, all personnel_inthe_immediate downwind area will also wear appropriate protective clothing. Cotton swab nosesmears will be“taken from each person workingnearr_resuspendiblePu-csontaminated soil ateach time their protective clothingis removed, to check on the adequateness of protective measures. These swabswill be analyzed in the Radiological Laboratory by liquid scintillation counting. ~~ -I, DECONTAMINATION . , Fo TE * 1. In addition to making the atoll safe for resettlement, an objective of Cleanup is to prevent_contaminated. debris frombecoming available on the world market, Since decontamination of contaminated debris is not a — viable alternative, allsuchdebriswhich_is collected_will bedisposedof as 15 oN TON ew pierre : ara " os vos oes . , Term wk SR Ame Ce Te pete Ow te pe ns oat eM mae . aor) repnet ‘ 4 .