XRU-6 samples. Since Japtan will probably Located along the same west of be the first island resettled by the south bearing as XRU-5 at a distance Marshallese, one well, AJA-1, was of about 90 m from the center of drilled to assess water quality and Cactus crater. quantity. Drilled from 3/22/74 It is located at the edge to 3/29/74 to a depth of 47 m and of dense vegetation about 50 m south cased to total depth. of the center of the island and 50 m Elevation northwest from the metal communications —- 1.92 m AMSL(S). building near the center of the island. DAVID (Japtan) The well was drilled 3/2/74 to a depth of 11 m and cased to total depth. This island with an area of 0.44 km’, Fig. Elevation - 1.95 m AMSL. 7, is located at the east channel entrance and was used ELMER (Parry, Medren) as a rest area during the test pro- gram. It received about 1 R/h of Elmer (Fig. 8, area of 0.74 tn”) fallout and present background levels was used as scientific headquarters are about 1 uR/h over the entire during the test programs and received island. only 2.6 R/h of fallout. No elevated levels of con- Background, tamination were observed during the soil and biota radioactivity levels 1972 survey in either soil or biota are similar to those on David. Like David, Elmer will be among the first islands to be resettled and, at present, is designated for a permanent village. One well, APA-1, was there- fore drilled to assess ground-water Supply. It is located approximately 220 m southeast of the southern dock and 220 m northeast of the boat ramp. It was drilled 3/1/74 to a depth of 12 m and cased to total depth. Elevation - 4.03 m AMSL(S). LEROY Fig. 7. Well location on David (Japtan), Enewetak. (Rigili) Leroy, Fig. 9, is unique in several respects among the islands included -14-