Reliaopia assessments Of actual coses susc 3e Jecearsined through sersonnel monitoring. iIxcernal cadiacion dosimecers 20 aoc apcear 29 24 a Dracticai Tans Of Jersonne: monLcoriag for .naiviauai axcernal cose measuremenc3, alchougn certain .caacfividuals wicnia given sonulatzions sav .e ralied inea co wear chem. aA ‘lizastyvle moaei' ‘snica .acluaes astimaces Jf occusancy faccors Isr varsous locations in a given acol. sag Deen icuniea VitN emvironmenca. monitors.ag ata 79 2s¢:mace average axcernal tadiaticn doses 73 sadivisuals. This mogei will s@ revised as Meedeg of she v2ecv0Le. 30 inact .5 <.0s@iy aporoximaces cine accual Liiestvie The =or2 wumpottanc wacermal oatnway can Je aoniccred iirect.y av conventional tecnarques of >icassav amg wmo.e 20Gdy sOunting Jf wadiviscuais. A 20rtaol2 smacow snieid ~nole .0av7 sounter has seen constructa2a ana nounced in a shipooard trailer for ise in the “arsnail islands. Ic is cavagle of quancicaczive secacticn of very sMa.l quamtlis.as Of certain Tagionuc..ces La ine s0ay sucn oewmar’ 2nvironmentai gamma emicters ac 3ix.uni, ZSnewetax ana Rongelap acoils. iies individuals .a the donge.ao gonulacion vno om eating coconuc scrape <ctom certaia are 30¢ wocacszons. 42,3) se performed every sne co swo years 2? c3 ana wes, ime The syseem claariy idene:- following cne cacommended dietary rescriccions Zoav surdens cr 705 2/30, are est.cated oy the rtadiocnemicai amaivsis of urine samples. stunting Will as ac 3.4ia1 759, 2400, ana -**ag rine gamolea collactzons and wnole 30cy and Zaewecak Atolls wnen tne veople return, and every two to three vears at Zongeiap Acoil unetzil che results varcranc Less frequent seasurement -ofatvass. Summarr Marsnall Islands 2aatclogical Followuo has consisted of iacernsive environmental studies ac 3ikini, Zneweeax, ang Roageiao Acolls so gacner radiological daca on che external radiacion environmene and on taciLoacrivisy ia foed chains. Madtacion and radioactivity ievels in these acolis are cseing reduced with cime. These cnanges 3are monitored .2 annual or Jiannuai environmental surveys. Upaaced ‘aformacica {s 3sed <2 taxe conservative estimaces sf rooulation doses and dose commicmencs. ‘When secole have recurned, actuai -acermal doses co ‘adividuals are decerainea cor whole body count:ag and Sicassay daca. These tagu.cs are comoined vith environmental jaca om che extermal radiacion enviromment 20 compiece ine cocal cose assessmenc d1cture. Rererences lL. Dunning, G. M., “NadfLoaceive Contamination of Caertaia areas 1.2 the 2acific 2cean from Nuclear Tasts, «. Summary of tne Jaca crom the Radio.ogica. Surveys and Medical ixamaacions", JSAEC Reporc, Auguse, 957. 2. deld, 2. E., ‘Gamma Dose Races at Rongelap acoll, 195481963", USAEC Resort, JWFL<-391, Hay 1.965. 3 2, tDemaldson, L. 2., at al. ‘Bikiatetniwecok Seudies, 1.946, 2are <I and Il", University of Wasniogeoa, Laooratory of Radiacion 3iology, UWFL-393, Sepcemper 1.5, 966. +. dJeex, 4. L., 3enmect, 3. G. and McCraw, T. F., “Excernal Radiation Levels on Bikini Acoli May .967, JSAEC Report, 4ASL-i90, Jecemoer 1967. 5. S3ennect, 3. G. and Jeck, 3. 0., "Sxternsi Radlacion on 3ikini Acoll", Naeure 223: 925-928 , 1969. 4. Zeid, E. 2., ‘"Radtological Resurvey of Animals. Soils and Ground Wscer ac 3ikini Acoll, 1969-13970", Uairversicy of Wasningtoa, College of Fishertes, NVO<«269-4 (Rev. 1), February 1971. 7, $imich, A. 2. and Moore, W, £., Revort of Radiological Cieam up of Jikini Atoll, Office of Dose Agsessmenc and Svstems Analysis’, “sescern Zavironmencai Research Laboratory, Zaviroamental Protacc:on agency, SWRHL-lllr, January 1972. 3, SMeCraw, T. F. amd Lymch, 0. 3. T. Jv., "Exposure Rate Reduction on 3ikini Island Jue co Concrece Dwellings, CSAEC Revert, WASH-1273, June 1973. >. ‘“cCraw, Tt. F., “Levels of Eavironmenral Radfoactivicy ia 3ikind Acoil, USAEC Report, WASH-1289, L974, 19. Emewetak Radiological Survey, Volumes 1, "I and III, JSAEC Nevada Operations Office, Repore WO0-140, Qesover 1973. i. Lynch, O. 3. 7. Jee, McCraw, T. F., Nelson, 7. A., and Moore, 7. 5., "Radiological Resurvey of Sood, Sotl, Air and Ground Wacer ac 3ikini Acoll, i972", USERDA Report, =RDA-34, february 1975. 2. Sudiksen, 27. 3., and Robison, 4. L., “Preliminary External Jose Zstimaces for Fucure 3ikiai Acoll lahapicancs, Lawrence Livermore Laboratory Revort, Orelimiogry UCRL-31879, Auguse 1975. 13. 2?aiumbe, 2. ¥. and Lowman, F. G., ‘The Occurrence of Antimony-125, fYurcptumei55, Lron-55 and Other Radionuclides in Zengelap Acoll Soil’, JSAEC 2evore UWFL-56, April 7, 1958. 14, Lowman, F. G., "Marine Biclogical Invescigacions at che Saiwerok Tese Sice’, from Jisposal of Radioactive Jastes, I[acernsctonal Atomic Energy Agency, ‘ienna, 1960. 15. Yelker, 2. 3., Zeld, &. &. and Gessel, 3. ?., ‘Radtocesium in Plants Grown on Rongelap arcoil Soils, %ec. Advan. 30¢. 2: 1363<1367, 961. 18. tole, 3. 4., Gessel, S$. 2. and Held, 2. 5., ‘Tension Lysimecer Studies of [on and Moisture “ovetence 1a Glacial Till amd Coral Acgil Soils Seil 3e4. 3ce. am. Proc. 28: 321-325, 1961. 17. Lowman, 7. G. and Palumpo, 2. 7., "Occurrence oc 3ismuca=-207 at Zaiwecok Acoll", Nacure 193: 79607397, 1362. 18. Thaxravart:, 3. and Seld, 2. 5., ‘Chemical and Radiochemicai Composicion of she Rongelapese Qtec', J. Fo0d fet. 29: 222-223, 1963. 3. <amaay, 2. M., "The Soils of Ronugelao Acoll, Marshall “islands”, Universicy of dasniagton ress, Corvailis, 1962. 20. deid, 2. Z., “Qualicacive Ofseribucion of Radiomuciides at Rongelap Acoli”, amer. inse. Jiol. Scei., Reramold P1201. To., New York, 1963, ap. 167-169.