484 RADIOLOGICAL CLEANUP OF ENEWETAK ATOLL Beta: $000 dpm/100 square centimeters fixed or 200 dpm/100 square centimeters removable. Gamma: _115 w R/hr fixed. Yy As the project drew to a close, the emphasis shifted to Preparing equipment for retrograde from the atoll. FCRR Standing Operating Procedure 608-14, Radiological Certification of Enewetak Ato} Retrograde Equipment, 18 March 1979, was published to provide a more elaborate system of record keeping andcertification for all equipment. All equipment identified as having been on a radiologically controlleq island at any time during the cleanup project had to be certified as noncontaminated by the Radiation Protection Officer (RPO) or his alternate prior to its release for unrestricted use off the atoll. Equipment which was on a radiologically controlled island was monitored andcertifieg as it was removed from theisland. Sinceall of this equipment hadto pass Runit en route to Enewetak, Runit was established as the central cleaning point for retrograde. Steam cleaners were borrowed from the base support contractor until the USAE’s own high-pressure solvent cleaners were delivered. After they arrived, the solvent cleaners were used until they succumbedto the harsh climatic conditions and long hoursof operation. A high-pressureair/salt water system using an air compressor and a venturi nozzle was fabricated by the USAE and used most effectively for the remainderofthe cleaning operation on Runit.23 To minimize transportation of equipment within the atoll, a second cleaning area was established on Enewetak Island for equipment used there. Before a piece of equipment was cleaned, it was monitored by instruments and released to the wash rack. If any possibility of contamination was found duringtheinitial monitoring, the equipment was returned to Runit (Yvonne) for decontamination. Only one suchpiece of equipment was sent to Runit with any measurable contamination, although below thelimits for retrograde. Although mostof this equipment was noncontaminated, it was cleaned to remove grease, dirt, and other foreign matter to allow a higher degree of confidence in the measurements. Since another air compressor was not available, a fire truck was pressed into service to provide a high-pressure stream of salt water for the Enewetakfacility. This method also provedto be quite successful, allowing the cleaning and certification of much equipment to be accomplished in a relatively short period of time. Items which could not be decontaminated were disposed of as contaminated debris. Prior to release of an item of equipmentfor unrestricted use off the atoll, the JTG RPOor his alternate reviewed the results of the monitoring and swiping to insure that the