MEMORANDUM FOR: SUBJECT: CJTF SEVEN a ; 1O March 1954 Repert on ~Soil and Water Sampling Mission DECLASSIFIED 1, 410414 In compliance with your oral instructions, tho undersigned visited ‘fot Erikub, Maloolap, Wotho, Majuro Atolls in the Marshall Islands 5 through 7 Marc 1954 for the purpose of obtaining ocarth and drinking water samples, and of moa: ing gamma ray dose rates, and also checked the radiological condition of the S. ROQUE on its arrival at Majuro 7 March 1954, 2, The first four atolls were visited by Marshallese intcrpretcr Takushi and the writcr by means of an UF-1 amphibious aircraft. Majuro was reached by C-47, Erikub might have been omitted since it was not inhabited, boing propert of the Wotje tribe which goos thoro only occasionally to gather copra. (This » unknown until aftor the visit.) 3. At cach atoll, only the principal inhabited island was visited, At ca visited island an cffort was made to compose a representativo soil avcrago by collocting into a single containor several samples, cach approximtoly one squs foot of aroa and one inch depth. Water samples wore collectcd from tho princir sources currontly in use, Tho gamma doso ratcs aro averegos for the inhabited ArCaS.e 4e With regard to certain minor discrepancies between the survey methods by Major R. D. Crea and tho writcr; it was originally planned to perform the su jointly, and when it became advisable to scparate and survoy different atolls, | time remainod for discussion of details of techniques, 5. Gamma-ray dose rates on Wotje and on Erikub aro cach the average of MX and AN/PDR-39 average readings which agreed reasonably woll. --- Tho MX-5 was rend inoperative when the rubber life raft was swamped by surf on‘tho first attcmpt > launch from the beach at Erikub. Following tho Wotho survoy, the PDR~39 develo a temporature—-dependent reading of 0,4 — 2 o/hr, so that later readings in thi range are of very dubious reliability. 6. Tho following tabulation summarizes the atoll survey. Water Sample: ATCLL ISLAND DATE TIME WOTJE ORMED 5 Mar 1600 SAMPLE NO S85 w6 ERIKUB ERIKUB 5Mar THES DOCUMEHT COLSISTS. OF_=22?—-PAGELS) A noCLcr22Corks, SB GRD- 213 -Ss¥Y-2e£ Approved for Public P.M. Bodin Release DOE/NV i Cy “i 1715 56 5S is Soil, Wis MR/HR & SAMPLING ~ 3.5 or/fhr, l-boach, 3-mid-vi age, l-back village. " £ well plus 4 catch basin. ‘1.5 mfhr. l-mid-village, | on path to beach. No inhab: ants, no water supply found. BEST COPY AVAILABLE © Acs rte. Pot aw Lie St J