oO / A re “es | 1975 BIKINI US DOE ARCHIVES 326 LS AiUt:C ENE ff Bikind Soi? and Gems capiecte DBM- EA Frles oil. Box @0S0 Purpose: Soi) Survey MOL GS MAILSSION Jobt 7723 The 5041 sempling program ts deg distribution of the activity of varid bné Enev Islands of the Biking Atoll, Every possible cffort will be made to integrate this sampling program with previous programs to avotd undve duplication of effort. The actual nunder of samples and their specific collection sites will be a function of (1) the expected activity levels, (2}. future home-construction plans, (3) future agriculture? plans, (4) the aerial survey results or any other moasure of the varisbility fn the gamns exposure rates, end (&) the number and locations of recent toil somles collected by other proorams. Kethods and Measurements: Two types of sot) samples will be goliected for analysis: (I) 3 15-cm-deep surface core sample of 60 cm* brea, and (7) 5 profile cojlection | area based up on sidewall sampling ip 6 trench in which samples of 300 cy are co} ected at 15 cm depth increments to a tote? depth of 90 cm. for .. purposes of planning the survey, Bikint Island uy be divided into the north, central, and sovth sections along the respective second base line roads, Encu nay be divided into the north and south sections divided by the airstrip. epproximete numbers of surface and profile sampies to be collected within i ese sections sre shown in Teble 1}, the Note thst a mejor fraction of the sur foce samples will be collected within the central section of Biking Istend. hts is due to the relatively higher and more varlable gamma exposure rates in this area ond to the fact that a major fraction of the returning Bikintans will most likely reside within this section. Only 3 few profile samples are planned in this area because severel samples have already been collected during previous surveys. The north and sovth sections of Bikini Istend and a1} of Lncu exhibit relatively lower contanination levels; hence, the sampling Oensity fis lower. Special emphasts, however, will be given to the lagoon | side of Enew since future homes msy be erected in this ares. Toble 1. Kumber_ of sof} semple locatt ons on each istand. Ko. of Sonple Locations BEST COPY AVAILABLE Surface (0-15 cm) Biking Korth of second Bascline k Central Section South of second Baseline S 2h . 700 2b Eneu . horth of airstrip south of airstrip TOTAL a —_ 60 _ 40 a G ae CUTARY ficStasth @ ar’ 7] - ae A ‘ ~ ATOTIPAt TT . . 350 Profiles (0-90 cm) 2 4 z 2. a 12 (6 samples esch) 05258 ELEREETageaaaS