As described above, profile sampling was conducted on Irene at various times between mid-November and early March. Several reasons account for the long period required to complete this phase of sampling, chief among them being that sampling was conducted concurrently on other islands as well. Table 6-6 presents a chronology of soil sampling missions during the November-March period. Surface samples were collected as a high priority task in order to complete the characterization of the northern islands, but samples were not collected from an island until a grid had been laid out and access lanes cleared. Plans were prepared and available for soil profile sampling on ground zero islands and were implemented whenever they could be fit in between surface sampling requirements. Figures 6-17, 6-18, 6-19 and 6-20 show the locations sampled in the early subsurface investigations conducted on test islands. TABLE 6-6. CHRONOLOGY OF SOIL SAMPLING MBSIONS, NOVEMBER 1977 - MARCH 1978 14,15 17 Irene Yvonne 25,26,29 30 Irene Pearl 17,18,*,21,22 Sally Pearl Irene 1978 JAN 2,3 4,5,6 23,25,26 27,28,30 Pearl Janet Sally Sally MAR 1,3 8,9 9 14 16 22 30 Vera Irene DEC 1,2 2 7,8 12 16 20,21,23 FEB 8 11,13 14,16 16 17 18 21 22 23 Surface Sally Pearl Irene Sally ‘Janet Sally Irene Sally Pearl Sally Olive roa 1977 NOV 8,9 TYPE OF SAMPLING GZ Profile Lucey Kate Nancy Alice Belle, Clara, Daisy Yvonne Tilda Wilma Sally (West end) Mary, Ruby *Conduct of soil sampling on an island was generally planned for consecutive days; however, mechanical problems with boats or backhoes, bad tide conditions and other unforeseen problems interrupted planned missions on the following datess November 19; December 12; January 24; February 6, 10, 14, and 20; March 2,7,13, and 27. 185 wee Date