}EPORT CF PUCLIC NEALTH SERVICE CFF-SITE RADIOLOGICAL MONITORING DATA CPERATION HARDTACK PHASE 1 -’ 1958 During the Spring and Summer, 1978, test series at the Pacific Proving Grounds the Public 'Jlealth Service operated an off- site radiological safety program under an agreement with Joint Task Force Seven. Details of the Public Health Service operation are covered in “anual for Public Health Service Participants - Operation HAROTACK,"” FNS Officers stationed on each of the close-in populated atolls of Utirik, Ujelang, Rongelap and Wotho secured data on radiation levels and collected environmental samples for laboratory counting, In addition, data on gamma levels were obtained by weatner personnel at the following locations: Kwajalein, Hidway, Wake, Guam, Truk, Ponape, Tarawa, Nauru, Majuro, Kussie, and “aninga marance, These locations cover an erea of evproxi- mately one thousand mile radius from the testing area. On each of the islands operated by P"5 personnel a monitoring station was established in the camp site near thie native village. ft each of these stetinons indine, air and rainfall fallout samples were taken as well as daily gamma readiras. A continuous gamma recorder was used along with an A‘/POR 27F Radiac instrument. 4A high range AN/PDR 1@A radiac instrument and a cutie pie for eta measurements were provided but were not needed during the operatinn, In addition, approximately fifteen film-badge stations were established on each of the islands manned by a PH3S Officer. All of the sample collectors, the gamma recorders, filmbadge station rumber one, and the location at which daily gamma readings were taken were in close proximity so that, as early aS possible, these readings and samples came from the same loca- tion. Equipment on the weather islands consisted of a continuous gamma recorder and an AN/PDR 27F radiac instrument. These were operated by the weather station personnel stationed there with supervision and consultation from the PHS. Radietion exposures on these islands were negative, hut the records are on file with the Fublic Health Service should there be any question, During the period of the tests et Jxhnston Island, the Service operated monitoring stations (air sampling and continuous gemma monitor recorders) on the principle islands of the Hawaii croup. This was done in conjunction with the Territorial Health Department anc at their request. Sbow no increase ahove backacround. Data from these stations The purpose of this report is to present data from statinns * _o hg operated by PH3 personnel. It will be subject to additional study ard analyses in an attempt to further determine its significance. Herth gE 4 ,, / ORK