_ - ne Debris Cleanup 259 IKUREN (GLENN) ISLAND CLEANUP other Ikuren contains 41 acres and wasthe site of a photo station and Umbrella event of scientific instrumentation during the test era. The north of Operation Hardtack I was detonated 150 feet under water I.4 miles ine western tip of the island. Vegetation was dense. There were some derelict marine craft on the lagoon side as well as a large quantity of miscellaneous wood, metal, and concrete debris scattered over theisland. An estimated 975 cubic yards of debris required removal, all noncontaminated; 23 Master Index items were identified. The planned use for [kuren was food gathering. !!2 Debris cleanup began on 30 August 1978 and ended on 22 September 1978. A total of 908 cubic yards of debris was removed. !13 BOKANDRETOK (WALT) ISLAND CLEANUP Bokandretok hasan area of less than | acre and contained a navigational beacon, generator, transmitter, and two-man accommodations from which debris remained. Vegetation was dense, particularly on the oceanside. There were estimated to be 34 cubic yardsof debris, all noncontaminated, including seven Master Index items. The planned use for Bokandretok was food gathering.!!4 Ten cubic yards of debris were actually removed on 9 October 1978.1!5 MEDREN(ELMER) ISLAND CLEANUP Medren contains 220 acres and was used during the test era as the headquarters of the scientific community which, at its peak, numbered oeee about 3,000 people (Figure 5-31). Vegetation was abundant, although not as dense as on someofthe other islands. It was from the supportfacilities that most of the debris and scrap had accumulated. Hazardous debris included large numbersof concrete blocks, buildings and slabs, towers and posts, pier and dockfacilities, and much miscellaneous wood, metal, and concrete debris. None of this debris was contaminated. It was estimated that 58,206 cubic yards of debris required disposition, including 312 Master Index items. Ofall the noncontaminated concrete rubble and metal debris found on the entire atoll, nearly half was found on Medren alone. The planned use for Medren wasresidence.!16 Debris cleanup by the JTG began on 15 February 1978 and was completed 2 years later in February 1980. To make room for the DOI/ TTPIrehabilitation effort, the center portion of the island was cleared on a "Ee