— 4 —— ‘ Demobilization cleaning procedures used on retrograde shipments. He reported that th measures were more than adequate to assure that Enewetak shipme would have no problem passing USDA inspections at U'S. ports of entry During the period 22-28 June 1979, the USS ALAMOprovided » well repair service to the U.S. Navy Element (USNE) craft at Enewetak addition, the ship loaded 2,894 measurement tons of retrograde cargo Pearl Harbor and 1,585 measurement tons for San Diego, includin disabled Army LARC-LX. The disabled craft was towed by anot LARC-LX from the beach at Enewetak to the USS ALAMOduring hours of darkness without incident.20.21 Personnel from the U.S. Ar Element (USAE), USNE, and H&N-PTD worked well into the night complete loading of retrograde aboard the ship. MONITORING AND DECONTAMINATING RETROGRADE One of the primary concernsof radiological control was to assure tl contaminated equipment was not removed from a radiologically contro! island to an uncontrolled island within the atoll. Before equipmentv removed from a controlled island, it was monitored by the Field Radiat Support Team (FRST) and, if necessary, decontaminated before be. released. The release of an item was logged in the FRST Team Chie report for the island. This procedure also was used for retrograde equipment from controlled islands during most of the project. Prior to monitoring, all equipment had to be cleaned by the owning using activity to remove accumulated mud, grease, oil, concrete, or ot! foreign matter that potentially could trap contamination or could interfi with monitoring. To determine fixed contamination, the equipmentv monitored with portable field instruments for alpha, beta, and gam activity. The amount of removable contamination was determined using paper swipes to wipe an area of 100 square centimeters. Then, ' swipes were analyzed for alpha and beta activity either in the FR laboratory or in the J-2 office. 22 The areas to be monitored and/or swiped were selected as thi locations mostlikely to contain or entrap contamination, such as radiatc floor boards, air cleaners, and wheel wells of vehicles. Contaminat limits for release of equipment to clean areas were based on d: American National Standards Institute Standard Number N328-1976 amended by DOE-NV.Limits were as follows: Alpha: 1000 dpm/100 square centimeters fixed or 20 dpm/100 square centimeters removable.