—_ 4. this delay can be made up during the current FY. Accomplishments to date include: a) participation in a joint LLL-UH field trip to Bikini, where chemical and bacteriological water quality was tested for a variety of groundwater and cistern sources, and additional hydrologic observations were made as well as field tests of alpha-dosimetry films; b) a portable drilling system was purchased, assembled, field tested and shipped to Enewetak, where it awaits a field trip now rescheduled for March; c) 3H and related data obtained over the course of the project has been assembled, interpreted, and is currently being written up for publication; and d) hydrologic modelling efforts have been intensified. 17. Expected Results in FY 1979: During FY 79 we expect to complete the drilling and basic hydrologic testing of the additional shallow wells designed to provide the necessary data for a refined hydrologic model of Enjebi island. As mathematical model development is already in progress, we expect that model refinement will yield publishable results in FY 79. On Enjebi and other islands we will obtain chemical, hydrologic, and radiological data on the groundwater changes associated with vegetation removal and other recharge surface alterations associated with cleanup. Plans, and if possible, preliminary experiments will be carried out to prepare to monitor the effects of the Runit I. scrap encapsulation on the surrounding reef, island and lagoon area. When the lagoon circulation study is completed we will integrate our island and lagoon tidal data with those results to provide a general but detailed description of the interactions between the island groundwater systems and tidal patterns in the ocean and lagoon. Continued monitoring of Enewetak I. and Japtan I. wells will provide practical estimates of the potential for long-term utilization of the fresh groundwater resources 18. on these islands. Expected Results in FY 1980: FY 80 will be the year of conclusion for most of the "normal" modelling and data interpretation efforts. However, responses and changes field observation of stress in the hydrogeochemical system as a result of cleanup, rehabilitation and resettlement will continue. The results of these observations will be used to test the models already developed, and to provide practical assessment of the effects of the various activities and their implications for the Enewetak people. Description of Major Materials, Equipment & Subcontract Items: None 20. Proposed Obligations for Related Construction Projects: None © 19,